Manual de Servicio Motorola CDM & PRO Series
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Transcript of Manual de Servicio Motorola CDM & PRO Series
CDM™ and PRO SERIES™
Mobile Radios
contact
control
DetailedService Manual P
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CA, Motorola, Professional Radio, CDM Series and CDMModel numbers, PRO Series and PRO Series Model num-bers are trademarks of Motorola.© 1999 Motorola, Inc. All rights reserved. Printed in USA.
*6881091C63*68P81091C63-O
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CDM™ and PRO SERIES™
Mobile Radios
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PRO7100
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Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola cer-tain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product.
Safety-1
SAFETY INFORMATIONImportant information on safe and efficient operation is included in this manual. Read this information before using your radio.
SAFE AND EFFICIENT OPERATION OF MOTOROLA TWO-WAY RADIOSThis document provides information and instructions for the safe and efficient operation of Motorola Portable and Mobile Two-Way Radios.
The information provided in this document supercedes the general safety information contained in user guides published prior to 1st. January 1998.
For information regarding radio use in hazardous areas, please refer to the Factory Mutual (FM) approval manual supplement or Instruction Card which is included with radio models that offer this capability.
EXPOSURE TO RADIO FREQUENCY ENERGYYour Motorola Two-Way Radio, which generates and radiates radio frequency (RF) electromagnetic energy (EME) is designed to comply with the following National and International Standards and Guidelines regarding exposure of human beings to radio frequency electromagnetic energy:
l Federal Communications Commission Report and Order No. FCC 96-326 (August 1996)
l American National Standards Institute (C95.1 - 1992)l National Council on Radiation Protection and Measurements (NCRP-1986)l International Commission on Non-Ionizing Radiation Protection (ICNRP- 1986)
l European Committee for Electrotechnical Standardisation (CENELEC):
To assure optimal radio performance and to ensure that your exposure to radio frequency electromagnetic energy is within the guidelines in the above standards, always adhere to the following procedures:
PORTABLE RADIO OPERATION AND EME EXPOSUREl When transmitting with a portable radio, hold radio in a vertical position with the
microphone 2.5 to 5 centimeters (one or two inches) away from the mouth. Keep antenna at least 2.5 centimeters (one inch) from your head or body when transmit-ting.
l If you wear a portable Two-Way radio on your body, ensure that the antenna is at least 2.5 centimeters (one inch) from the body when transmitting.
ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY
l To avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any facility where posted notices instruct you to do so. Hospital or health facilities may be using equipment that is sensitive to external RF energy.
l When instructed to do so, turn off your radio when on board an aircraft. Any use of a radio must be in accor-dance with airline regulations or crew instructions.
ENV 50166-1 1995 E Human exposure to electromagnetic fields Low frequency (0 Hz to 10 kHz)
ENV 50166-2 1995 E Human exposure to electromagnetic fields High frequency (10 kHz to 300 GHz)
Proceedings of SC211/B 1996 “Safety Considerations for Human Exposure to EMFs from Mobile Telecommunication Equipment (MTE) in the Fre-quency Range 30MHz - 6 GHz.” (EMF - Electro-Magnetic Fields)
NOTE Nearly every electronic device is susceptible to electromagnetic interference (EMI) if inade-quately shielded, designed or otherwise configured for electromagnetic compatibility
MAN WITH RADIO
Safety-2
OPERATIONAL WARNINGS
Vehicles with an air bag
l Do not place a portable radio in the area over an air bag or in the air bag deployment area. Air bags inflate with great force. If a portable radio is placed in the air bag deployment area and the air bag inflates, the radio may be propelled with great force and cause serious injury to occupants of vehicle.
Potentially explosive atmospheres
l Turn off your Two-Way radio when you are in any area with a potentially explosive atmosphere, unless it is a radio type especially qualified for use in such areas (e.g. FM or Cenelec approved). Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or even death.
Batteries
l Do not replace or recharge batteries in a potentially explosive atmosphere. Contact sparking may occur while installing or removing batteries and cause an explosion.
Blasting caps and areas
l To avoid possible interference with blasting operations, turn off your radio when you are near electrical blasting caps. In a “blasting area” or in areas posted “turn off two-way radio”, obey all signs and instructions.
OPERATIONAL CAUTIONS
Damaged antennas
l Do not use any portable Two-Way radio that has a damaged antenna. If a damaged antenna comes into con-tact with your skin, a minor burn can result.
Batteries
l All batteries can cause property damage and/or bodily injury such as burns if a conductive material such as jewelery, keys or beaded chains touch exposed terminals. The conductive material may complete an electrical circuit (short circuit) and become quite hot. Exercise care in handling any charged battery, particularly when placing it inside a pocket, purse or other container with metal objects.
INTRINSICALLY SAFE RADIO INFORMATIONFMRC Approved Equipment
Anyone intending to use a radio in a location where hazardous concentrations of flammable material exist (hazardous atmosphere) is advised to become familiar with the subject of intrinsic safety and with the National Electric Code NFPA 70 (National Fire Protection Association) Article 500 (hazardous [classified] locations).
An Approval Guide, issued by Factory Mutual Research Corporation (FMRC), lists manufacturers and the products approved by FMRC for use in such locations. FMRC has also issued a voluntary approval standard for repair service (“Class Number 3605”).
FMRC Approval labels are attached to the radio to identify the unit as being FM Approved for specified hazardous atmospheres. This label specifies the hazardous Class/Division/Group along with the part number of the battery that must be used. Depending on the design of the portable unit,
NOTE The areas with potentially explosive atmospheres referred to above include fuelling areas such as: below decks on boats; fuel or chemical transfer or storage facilities; areas where the air contains chemicals or particles, such as grain, dust or metal powders; and any other area where you would normally be advised to turn off your vehicle engine. Areas with poten-tially explosive atmospheres are often but not always posted.
!W A R N I N G
!
!C a u t i o n
Safety-3
this FM label can be found on the back of the radio housing or the bottom of the radio housing.Their Approval mark is shown below.
Radios must ship from the Motorola manufacturing facility with the hazardous atmosphere capability and FM Approval labeling. Radios will not be “upgraded” to this capability and labeled in the field.
A modification changes the unit’s hardware from its original design configuration. Modifications can only be done by the original product manufacturer at one of its FMRC audited manufacturing facilities.
Unauthorized or incorrect modification of an FMRC Approved Product unit will negate the Approval rating of the product.
Repair of FMRC Approved Products
REPAIRS FOR MOTOROLA FMRC APPROVED PRODUCTS ARE THE RESPONSIBILITY OF THE USER.
You should not repair or relabel any Motorola manufactured communication equipment bearing the FMRC Approval label (“FMRC Approved Product”) unless you are familiar with the current FMRC Approval standard for repairs and service (“Class Number 3605).
You may want to consider using a repair facility that operates under 3605 repair service approval.
WARNING: Do not operate radio communications equipment in a hazardous atmosphere unless it is a type especially qualified (e.g. FMRC Approved) for such use. An explosion or fire may result.
WARNING: Do not operate the FMRC Approved Product in a hazardous atmosphere if it has been physically damaged (e.g. cracked housing). An explosion or fire may result.
WARNING: Do not replace or charge batteries in a hazardous atmosphere. Contact sparking may occur while installing or removing batteries and cause an explosion or fire.
WARNING: Do not replace or change accessories in a hazardous atmosphere. Contact sparking may occur while installing or removing accessories and cause an explosion or fire.
WARNING: Do not operate the FMRC Approved Product unit in a hazardous location with the accessory contacts exposed. Keep the connector cover in place when accessories are not used.
WARNING: Turn radio off before removing or installing a battery or accessory.
WARNING: Do not disassemble the FMRC Approved Product unit in any way that exposes the internal electrical circuits of the unit.
WARNING: Failure to use an FMRC Approved Product unit with an FMRC Approved battery or FMRC Approved accessories specifically approved for that product may result in the dan-gerously unsafe condition of an unapproved radio combination being used in a hazardous location.
WARNING: Incorrect repair or relabeling of any FMRC Approved Product unit could adversely affect the Approval rating of the unit.
WARNING: Use of a radio that is not intrinsically safe in a hazardous atmosphere could result in serious injury or death.
FM
APPROVED
!W A R N I N G
!
!W A R N I N G
!
!W A R N I N G
!
Safety-4
FMRC’s Approval Standard Class Number 3605 is subject to change at any time without notice to you, so you may want to obtain a current copy of 3605 from FMRC. Per the December, 1994 publication of 3605, some key definitions and service requirements are as follows:
RepairA repair constitutes something done internally to the unit that would bring it back to its original condition Approved by FMRC. A repair should be done in an FMRC Approved facility.
Items not considered as repairs are those in which an action is performed on a unit which does not require the outer casing of the unit to be opened in a manner which exposes the internal electrical circuits of the unit. You do not have to be an FMRC Approved Repair Facility to perform these actions.
Relabeling
The repair facility shall have a method by which the replacement of FMRC Approval labels are controlled to ensure that any relabeling is limited to units that were originally shipped from the Manufacturer with an FM Approval label in place. FMRC Approval labels shall not be stocked by the repair facility. An FMRC Approval label shall be ordered from the original manufacturer as needed to repair a specific unit. Replacement labels may be obtained and applied by the repair facility providing satisfactory evidence that the unit being relabeled was originally an FMRC Approved unit. Verification may include, but is not limited to: a unit with a damaged Approval label, a unit with a defective housing displaying an Approval label, or a customer invoice indicating the serial number of the unit and purchase of an FMRC Approved model.
Do Not Substitute Options or AccessoriesThe Motorola communications equipment certified by Factory Mutual is tested as a system and consists of the FM Approved portable, FM Approved battery, and FM Approved accessories or options, or both. This Approved portable and battery combination must be strictly observed. There must be no substitution of items, even if the substitute has been previously Approved with a different Motorola communications equipment unit. Approved configurations are listed in the FM Approval guide published by FMRC, or in the product FM Supplement. This FM Supplement is shipped with FM Approved radio and battery combination from the manufacturer. The Approval guide, or the Approval standard Class Number 3605 document for repairs and service, can be ordered directly through Factory Mutual Research Corporation located in Norwood, Massachusetts.
i
TABLE OF CONTENTS
Chapter 1 Introduction
1.1 Scope of Manual ........................................................................................................................... 1-11.2 Warranty and Service Support ...................................................................................................... 1-1
1.2.1 Warranty Period ..................................................................................................................... 1-11.2.2 Return Instructions ................................................................................................................. 1-11.2.3 After Warranty Period ............................................................................................................ 1-1
1.3 Related Documents ...................................................................................................................... 1-21.4 Technical Support ......................................................................................................................... 1-21.5 Warranty and Repairs.................................................................................................................... 1-21.6 Radio Model Chart and Specifications .......................................................................................... 1-41.7 Radio Model Information ............................................................................................................... 1-4
Chapter 2 Theory of Operation
2.1 Overview....................................................................................................................................... 2-12.2 Controller Section ......................................................................................................................... 2-1
2.2.1 Radio Power Distribution ....................................................................................................... 2-22.2.2 Automatic On/Off ................................................................................................................... 2-32.2.3 Emergency............................................................................................................................. 2-42.2.4 Mechanical On/Off ................................................................................................................. 2-42.2.5 Ignition ................................................................................................................................... 2-42.2.6 Microprocessor Clock Synthesizer......................................................................................... 2-52.2.7 Serial Peripheral Interface (SPI) ............................................................................................ 2-52.2.8 SBEP Serial Interface ............................................................................................................ 2-62.2.9 General Purpose Input/Output ............................................................................................... 2-62.2.10 Normal Microprocessor Operation ......................................................................................... 2-72.2.11 Static Random Access Memory (SRAM) ............................................................................... 2-8
2.3 Controller Board Audio and Signalling Circuits ............................................................................. 2-82.3.1 Audio Signalling Filter IC with Compander (ASFIC CMP) ..................................................... 2-82.3.2 Transmit Audio Circuits.......................................................................................................... 2-92.3.3 Microphone Input Path ........................................................................................................... 2-9
2.3.3.1 PTT Sensing and TX Audio Processing ........................................................................ 2-102.3.3.2 TX Secure Audio (optional) ........................................................................................... 2-102.3.3.3 Option Board Transmit Audio ........................................................................................ 2-10
2.3.4 Transmit Signalling Circuits ................................................................................................. 2-112.3.4.1 Sub-Audible Data (PL/DPL) .......................................................................................... 2-112.3.4.2 High Speed Data ........................................................................................................... 2-122.3.4.3 Dual Tone Multiple Frequency (DTMF) Data ................................................................ 2-12
2.3.5 Receive Audio Circuits......................................................................................................... 2-132.3.5.1 Squelch Detect .............................................................................................................. 2-132.3.5.2 Audio Processing and Digital Volume Control ............................................................... 2-142.3.5.3 Audio Amplification Speaker (+) Speaker (-) ................................................................. 2-142.3.5.4 Handset Audio ............................................................................................................... 2-152.3.5.5 Filtered Audio and Flat Audio ........................................................................................ 2-152.3.5.6 RX Secure Audio (Optional) .......................................................................................... 2-15
ii
2.3.5.7 Option Board Receive Audio 2-152.3.6 Receive Signalling Circuits................................................................................................... 2-16
2.3.6.1 Sub-audible Data (PL/DPL) and High Speed Data Decoder ........................................ 2-162.3.6.2 Alert Tone Circuits .........................................................................................................2-162.3.6.3 Voice Storage (Optional) .............................................................................................. 2-17
2.4 UHF (403-470 MHz) Receiver Front-End ................................................................................... 2-172.4.1 Front-End Band-Pass Filters & Pre-Amplifier....................................................................... 2-192.4.2 First Mixer and 1st Intermediate Frequency (IF) ................................................................... 2-192.4.3 2nd Intermediate Frequency (IF) and Receiver Back-End................................................... 2-19
2.5 Transmitter Power Amplifier (PA) 40 W ...................................................................................... 2-202.5.1 Power Controlled Stage ....................................................................................................... 2-202.5.2 Pre-Driver Stage .................................................................................................................. 2-202.5.3 Driver Stage ......................................................................................................................... 2-212.5.4 Final Stage........................................................................................................................... 2-212.5.5 Bi-Directional Coupler .......................................................................................................... 2-212.5.6 Antenna Switch .................................................................................................................... 2-212.5.7 Harmonic Filter......................................................................................................................2-212.5.8 Power Control ....................................................................................................................... 2-21
2.6 Frequency Synthesis .................................................................................................................. 2-222.6.1 Reference Oscillator............................................................................................................. 2-222.6.2 Fractional-N Synthesizer...................................................................................................... 2-222.6.3 Voltage Controlled Oscillator (VCO) .................................................................................... 2-232.6.4 Synthesizer Operation.......................................................................................................... 2-25
2.7 VHF (136-174MHz) Receiver Front-End ..................................................................................... 2-262.7.1 Front-End Band-Pass Filters and Pre-Amplifier ................................................................... 2-272.7.2 First Mixer and 1st Intermediate Frequency (IF) .................................................................. 2-272.7.3 2nd Intermediate Frequency (IF) and Receiver Back-End................................................... 2-27
2.8 Transmitter Power Amplifier (PA) 45 W ...................................................................................... 2-282.8.1 Power Controlled Stage ....................................................................................................... 2-282.8.2 Pre-Driver Stage .................................................................................................................. 2-282.8.3 Driver Stage ......................................................................................................................... 2-292.8.4 Final Stage........................................................................................................................... 2-292.8.5 Directional Coupler............................................................................................................... 2-292.8.6 Antenna Switch .................................................................................................................... 2-292.8.7 Harmonic Filter..................................................................................................................... 2-292.8.8 Power Control ...................................................................................................................... 2-30
2.9 Frequency Synthesis .................................................................................................................. 2-302.9.1 Reference Oscillator............................................................................................................. 2-302.9.2 Fractional-N Synthesizer...................................................................................................... 2-302.9.3 Voltage Controlled Oscillator (VCO) .................................................................................... 2-322.9.4 Synthesizer Operation.......................................................................................................... 2-33
2.10 Control Head (PRO3100, CDM750) ........................................................................................... 2-342.10.1 Power Supplies .................................................................................................................... 2-342.10.2 Power On/Off ....................................................................................................................... 2-342.10.3 Microprocessor Circuit ......................................................................................................... 2-342.10.4 SBEP Serial Interface .......................................................................................................... 2-352.10.5 Keypad Keys........................................................................................................................ 2-352.10.6 Status LED and Back Light Circuit ....................................................................................... 2-352.10.7 Microphone Connector Signals ............................................................................................ 2-362.10.8 Speaker................................................................................................................................. 2-362.10.9 Electrostatic Transient Protection ........................................................................................ 2-36
2.11 Control Head (PRO5100, PRO7100, CDM1250, CDM1550) ..................................................... 2-372.11.1 Power Supplies .................................................................................................................... 2-372.11.2 Power On / Off ..................................................................................................................... 2-37
iii
2.11.3 Microprocessor Circuit ......................................................................................................... 2-372.11.4 SBEP Serial Interface .......................................................................................................... 2-382.11.5 Keypad Keys........................................................................................................................ 2-382.11.6 Status LED and Back Light Circuit....................................................................................... 2-382.11.7 Liquid Crystal Display (LCD)................................................................................................ 2-392.11.8 Microphone Connector Signals............................................................................................ 2-392.11.9 Speaker................................................................................................................................ 2-402.11.10 Electrostatic Transient Protection ........................................................................................ 2-40
Chapter 3 Maintenance
3.1 Introduction ................................................................................................................................... 3-13.2 Preventive Maintenance ............................................................................................................... 3-1
3.2.1 Inspection............................................................................................................................... 3-13.2.2 Cleaning................................................................................................................................. 3-1
3.3 Safe Handling of CMOS and LDMOS ........................................................................................... 3-23.4 General Repair Procedures and Techniques ............................................................................... 3-23.5 Recommended Test Tools ............................................................................................................ 3-53.6 Transmitter Troubleshooting Chart ................................................................................................ 3-63.7 Receiver Troubleshooting Charts ................................................................................................. 3-73.8 Synthesizer Troubleshooting Charts ............................................................................................. 3-93.9 VCO Troubleshooting Charts....................................................................................................... 3-11
Chapter 4 Schematic Diagrams, Overlays, and Parts Lists
4.1 Introduction ................................................................................................................................... 4-14.1.1 Notes For All Schematics and Circuit Boards ........................................................................ 4-1
List of Figures
2-1 Controller Block Diagram............................................................................................................... 2-12-2 DC Power Distribution Block Diagram ........................................................................................... 2-32-3 Transmit Audio Paths .................................................................................................................... 2-92-4 Transmit Signalling Paths ............................................................................................................ 2-112-5 Receive Audio Paths ................................................................................................................... 2-132-6 Receive Signalling Paths ............................................................................................................. 2-162-7 UHF Receiver Block Diagram...................................................................................................... 2-182-8 UHF Transmitter Block Diagram.................................................................................................. 2-202-9 UHF Synthesizer Block Diagram ................................................................................................. 2-232-10 UHF VCO Block Diagram ............................................................................................................ 2-242-11 VHF Receiver Block Diagram ...................................................................................................... 2-262-12 VHF Transmitter Block Diagram .................................................................................................. 2-282-13 VHF Synthesizer Block Diagram ................................................................................................. 2-312-14 VHF VCO Block Diagram ............................................................................................................ 2-32
4-1 PRO3100/CDM750 Control Head Top Overlay ............................................................................ 4-34-2 PRO3100/CDM750 Control Head Bottom Overlay ....................................................................... 4-44-3 PRO3100CDM750 Control Head Schematic Diagram, Sheet 1 ................................................... 4-54-4 PRO3100CDM750 Control Head Schematic Diagram, Sheet 2 ................................................... 4-6
iv
4-5 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Top Overlay ..........................................................................................................................................4-9
4-6 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Bottom Overlay ........................................................................................................................................4-10
4-7 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Schematic Diagram ..................................................................................................................... 4-11
4-8 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Keypad Schematic Diagram..................................................................................................................... 4-12
4-9 PRO5100/PRO7100/CDM1250/CDM1550 Control Head LCD Schematic ................................................................................................................................... 4-13
4-10 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Display Schematic ................................................................................................................................... 4-14
4-11 Complete Controller Schematic Diagram .................................................................................... 4-174-12 Controller Control Schematic Diagram ......................................................................................4-184-13 Controller I/O Schematic Diagram .............................................................................................. 4-194-14 Controller Audio Schematic Diagram .......................................................................................... 4-204-15 Controller Supply Voltage Schematic Diagram ........................................................................... 4-214-16 UHF (403-470MHz) Voltage Controlled Oscillator Schematic Diagram ...................................... 4-254-17 UHF (403-470MHz) Fractal-N Schematic Diagram .................................................................... 4-264-18 UHF (403-470MHz) Power Amplifier Schematic Diagram .......................................................... 4-274-19 VHF (136-174MHz) Main Board Top Side PCB .......................................................................... 4-334-20 VHF (136-174MHz) Receiver Front End Schematic Diagram .................................................... 4-344-21 VHF (136-174MHz) Receiver IF Schematic Diagram ................................................................. 4-354-22 VHF (136-174MHz) Fractal-N Schematic Diagram ..................................................................... 4-364-23 VHF (136-174MHz) Voltage Controlled Oscillator Schematic Diagram ...................................... 4-374-24 VHF (136-174MHz) Power Amplifier Schematic Diagram .......................................................... 4-38
List of Tables
1-1 Radio Model Number ..................................................................................................................... 1-3
3-1 Recommended Test tools .............................................................................................................. 3-5
4-1 PRO3100/CDM750 Control Head Parts List.................................................................................. 4-74-2 PRO5100/PRO7100/CDM1250/CDM1550 Control Head Parts List............................................ 4-154-3 Controller Parts List ..................................................................................................................... 4-224-4 UHF B1 Radio Parts List.............................................................................................................. 4-284-5 VHF (136-174MHz) Radio Parts List ........................................................................................... 4-39
1-1
Chapter 1
Introduction
1.1 Scope of ManualThis manual is intended for use by service technicians familiar with similar types of equipment. It contains service information required for the equipment described and is current as of the printing date. Changes that occur after the printing date are incorporated by a complete manual revision or alternatively, as additions.
1.2 Warranty and Service SupportMotorola offers long term support for its products. This support includes full exchange and/or repair of the product during the warranty period, and service/repair or spare parts support out of warranty. Any “return for exchange” or “return for repair” by an authorized Motorola dealer must be accompanied by a warranty claim form. Warranty claim forms are obtained by contacting customer service.
1.2.1 Warranty PeriodThe terms and conditions of warranty are defined fully in the Motorola dealer or distributor or reseller contract. These conditions may change from time to time and the following notes are for guidance purposes only.
1.2.2 Return InstructionsIn instances where the product is covered under a “return for replacement” or “return for repair” warranty, a check of the product should be performed prior to shipping the unit back to Motorola. This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty.
Prior to shipping any radio back to a Motorola warranty depot, please contact the appropriate customer service for instructions. All returns must be accompanied by a warranty claim form, available from your customer services representative. Products should be shipped back in the original packaging, or correctly packaged to ensure no damage occurs in transit.
1.2.3 After Warranty PeriodAfter the Warranty period, Motorola continues to support its products in two ways:
Firstly, Motorola's Accessories and Aftermarket Division (ADD) offers a repair service to both end users and dealers at competitive prices.
Secondly, Motorola’s service department supplies individual parts and modules that can be purchased by dealers who are technically capable of performing fault analysis and repair.
NOTE Before operating or testing these units, please read the Safety Information Section in the front of this manual.
1-2 Related Documents
1.3 Related DocumentsThe following documents are directly related to the use and maintainability of this product.
1.4 Technical SupportTechnical support is available to assist the dealer/distributor and self-maintained customers in resolving any malfunction which may be encountered. Initial contact should be by telephone to customer resources wherever possible. When contacting Motorola technical support, be prepared to provide the product model number and the unit’s serial number. The contact locations and telephone numbers are listed below.
1.5 Warranty and RepairsFor warranty and repairs, contact Motorola Technical Support as listed below. Be prepared to provide the product model number and the unit’s serial number .
Some replacement parts, spare parts, and/or product information can be ordered directly. If a complete Motorola part number is assigned to the part, and it is not identified as “Depot ONLY”, the part is available from Motorola Accessories and Aftermarket Division (AAD). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by a Motorola depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.Technical Support the product model number and the unit’s serial number .
Title Part Number
Service Manual, Basic, Engl 68P81091C62
Service Manual, Basic, Engl 68P81092C71
Service Manual, Basic, Port 68P81092C73
Service Manual, Basic,Span 68P81092C72
Service Manual, Detailed, Engl 68P81091C63
Service Manual, Detailed, Port 68P81092C76
Service Manual, Detailed, Span 68P81092C75
United States and Puerto Rico: 1-800-694-2161, Options 1, 3
Brasil: 000-811-682-0550
Colombia: 980-12-0451
Mexico: 001-800-694-2161
From other countries: (954)723-3008
Warranty and Repairs 1-3
Parts Order Entry7:00 A. M. to 7:00 P. M. (Central Standard Time)Monday through Friday (Chicago, U. S. A.)
To Order Parts in the United States of America:1-800-422-4210, or 847-538-80231-800-826-1913, or 410-712-6200 (U. S. Federal Government)TELEX: 280127FAX: 1-847-538-8198FAX: 1-410-712-4991 (U. S. Federal Government)(U. S. A.) after hours or weekends:1-800-925-4357
To Order Parts in Latin America and the Car-ibbean:1-847-538-8023Motorola PartsAccessories and Aftermarket Division(United States and Canada)Attention: Order Processing1313 E. Algonquin RoadSchaumburg, IL 60196Accessories and Aftermarket Division Attention: Latin America and Caribbean
Order Processing1313 E. Algonquin RoadSchaumburg, IL 60196
Parts Identification1-847-538-0021 (Voice)1-847-538-8194 (FAX)
ColombiaMotorola de ColombiaDiagonal 127A 17-64Santa Fe de BogotaColumbiaTelefono: 1-615-5759
BrazilMotorola Do BrasilRua Bandeira Paulista, 580Phone: (11)821-9991Fax: (11)828-0157
Puerto RicoMotorola de Puerto RicoA BE. Chardon, Edificio Telemundo 2Hato Rey, PR 00918Telefono: (787)641-4100Fax: (787)782-3685
MexicoMotorola De MexicoBlvd. Manuel Avila Camacho #32, Primer PisoCOL. Lomas de ChapultepecMexico D.F. 06700 CP 11000MexicoPhone: (5)387-0501Fax: (5)387-0554
1-4 Radio Model Chart and Specifications
1.6 Radio Model Chart and SpecificationsThe radio model charts and specifications are located in the Basic Service Manual listed under the Related Documents paragraph of this chapter.
1.7 Radio Model InformationThe model number and serial number are located on a label attached to the back of your radio. You can determine the RF output power, frequency band, protocols, and physical packages from these numbers. The example below shows one portable radio model number and its specific characteristics.
Table 1-1. Radio Model Number
Example: AAM25RHC9AA1AN
Type of Unit
Model Series
Freq. Band
Power Level
Physical Packages
Channel Spacing
ProtocolFeature Level
ModelRevision
Model Package
AAorLA
M 25 KVHF(136-
174MHz)
H1-25W
ANo Display, No Keypad
9Program-
mable
AAConventional
14F
A N
RUHF1(403-
470MHz)
K25-40W
CNo DisplayBasic Key-
pad
DULTR
264F
SUHF2(450-
512MHz)
D1-Line Dis-play, Lim-
ited Keypad
5128F
BLow
Band, R1 (29.7-
36.0MHz)
F1-Line Dis-play, Stan-
dard Keypad
8160F
CLow
Band, R2 (36.0-
42.0MHz)
N4-Line Dis-
play, Enhanced
Keypad
DLow
Band, R3 (42.0-
50.0MHz)
Mot
orol
a In
tern
al U
se
M =
Mob
ile
2-1
Chapter 2
Theory of Operation
2.1 OverviewThis chapter provides a detailed theory of operation for the radio and its components. The radio is designed as a single board unit consisting of a transmitter, receiver, and controller circuits. The board also accepts one additional option board that can provide functions such as secure voice/data, voice storage, or a signalling decoder.
A control head mounted directly on the front of the radio or remotely connected by an extension cable provides a user interface for controlling the various features of the radio.The control head contains, LED indicators, microphone connector, and buttons depending on the radio type, display, and speaker.
If a control head is not mounted directly on the front of the radio, an expansion board containing circuits for special applications can be mounted in its place on the front of the radio. An additional control head may be connected using an extension cable.
The rear of the radio provides connections for a power, antenna, and accessory cable. The accessory cable provides connections for items such as an external speaker, emergency switch, foot operated PTT, and ignition sensing, etc.
2.2 Controller The radio controller, shown in Figure 2-1, is divided into three main functions:
n Digital control
n Audio processing
n Voltage regulation.
The digital control section of the radio consists of a microprocessor (µP), support memory, support logic, signal MUX ICs, on/off circuit, and general purpose input/output circuits.
Figure 2-1. Controller Block Diagram
ExternalMicrophone
ExternalSpeaker
InternalSpeaker
SCI to
Control Head
Audio PA
Audio/Signalling
To SynthesizerMod Out
16.8 MHzReference Clockfrom Synthesizer
Recovered Audio
To RF SectionSPI
Digital
µP Clock
5VRegulator (5VD)
RAM
EEPROM
FLASH
HC11FL0
ASFIC_CMP
Accessory &
5Vfrom SynthesizerSection (5V_RF)
Connector
2-2 Theory of Operation
2.2.1 Radio Power Distribution
The dc power distribution throughout the radio board is shown in Figure 2-2. Voltage regulation for the controller is provided by four separate devices:
n U0651 (MC78M05) +5 volts
n U0641 (LM2941) +9.3 volts
n U0611 (LM2941) +12 volts
n VSTBY 5V (a combination of R0621 and VR0621)
n Additional 5 volt regulator located in the RF section.
The dc voltage applied to connector J0601 supplies power directly to the following:
n Electronic on/off control
n RF power amplifier
n 12 volt regulator
n 9.3 volt regulator
n Audio PA
n 5.6 volt stabilization circuit
n 9.3 volt regulator (U0641) supplies power to the 5 volt regulator (U0651) and 6 volt voltage divider Q0681
Regulator U0641 generates the 9.3 volts required by some audio circuits, the RF and power control circuits. Input and output capacitors C0641 and C0644 / C0645 are used to reduce high frequency noise. Resistors R0642 / R0643 set the output voltage of the regulator. If the voltage at pin 1 is greater than 1.3 volts the regulator output decreases and if the voltage is less than 1.3 volts the regulator output increases. This regulator output is enabled by a 0 volt signal on pin 2. Transistors Q0661, Q0641, and R0641 are used to disable the regulator when the radio is turned off.
Voltage regulator U0651 provides 5 volts operating voltage for the digital circuits. Operating voltage is from the regulated 9.3volts supply. Input and output capacitors (C0651 / C0652 and C0654 / C0655) reduce high frequency noise and provide proper operation during battery transients. Voltage sense device U0652 or alternatively U0653 provides a reset output that goes to 0 volts if the regulator output goes below 4.5 volts. This resets the controller to prevent improper operation. Diode D0651 prevents discharge of C0652 by negative spikes on the 9.3 volt supply.
Transistor Q0681 and resistors R0681 / R0682 divide the regulated 9.3 volts down to about 6 volts. This voltage supplies the 5 volt regulator, located on the RF section. By reducing the supply voltage of the regulator, the power dissipation is divided between the RF section and the controller section.
The VSTBY signal, derived directly from the supply voltage by components R0621 and VR0621, buffers the internal RAM. Capacitor C0622 allows the battery voltage to be disconnected for several seconds without losing RAM information. Dual diode D0621 prevents radio circuits from discharging this capacitor. When the supply voltage is applied to the radio, C0622 is charged via R0621 and D0621. When the radio is switched on, the µP enters the wrong mode if the voltage across C0622 is still too low. The regulated 5 volts charges C0622 via diode D0621.
Theory of Operation 2-3
Figure 2-2. DC Power Distribution Block Diagram
The INT SW B+ voltage from switching transistor Q0661 provides power to the circuit controlling the audio PA output. The voltage is monitored by the µP through voltage divider R0671/R0672 and the line battery voltage. Diode VR0671 limits the divided voltage to 5.6 volts to protect the µP.
Regulator U0611 generates the voltage for the switched supply voltage output (SWB+) at accessory connector J0501, pin 13. U0611 operates as a switch with voltage and current limit. Resistors R0611/R0612 set the maximum output voltage to 16.5 volts. This limitation is only active at high supply voltage levels. The regulator output is enabled by a 0 volt signal at Q0661, pin 2. Q0641 and R0641 disable the regulator when the radio is turned off. Input and output capacitors C0603 and C0611/C0612 reduce high frequency noise.
Diode VR0601 protects against transients and reverse polarity of the supply voltage.
2.2.2 Automatic On/Off
The radio software and/or external triggers turn the radio on or off without direct user action. For example, automatic turn on when ignition is sensed and off when ignition is off.
Q0661 provides the INT SW B+ voltage to the various radio circuits and to enable the voltage regulators via transistor Q0641 which contains a pnp and an npn transistor that provide an electronic on/off switch. The switch is on when the collector of the npn transistor within Q0661 is low. When the radio is off the collector is at supply voltage level. This effectively prevents current flow from emitter to collector of the pnp transistor. When the radio is turned on the voltage at the base of the npn transistor is pulled high and the pnp transistor switches on (saturation). With the INT SWB+ voltage now at supply voltage level, transistor Q0641 pulls pin 2 of the voltage regulators U0611 and U 0641 to ground level, enabling their outputs.
The electronic on/off circuits are enabled by the µP through ASFIC CMP port GCB2, line DC POWER ON, emergency switch (line EMERGENCY CONTROL), the mechanical On/Off/Volume knob on the control head (line ON OFF CONTROL), or the ignition sense circuits (line IGNITION CONTROL). If any of the four paths cause a low at the collector of the npn transistor within Q0661, the electronic "ON" is engaged.
VCOBIC
FRACTN
VSTBY
5V_RF
9V3
FLT_A+
5VD
SWB+
Option Board 40 Pin Connector
PA, Driver Antenna Switch
Control Head12 Pin Connector
Accessories20 Pin Connector
J0601 13.2V
PASUPVLTG
FLT_A+
12VRegulator
ON / OFFControl
ASFIC_CMP5.6V
IgnitionEmergencyON/OFF
9.3VRegulator
Audio PA
6VRegulator
5VRegulator
5VD
5VRegulator
5V/VDDA
MCU µP, RAM,
FLASH & EEPROM
PCIC, TX Amp
Temp Sense
RX RF AmpIF Amp
2-4 Theory of Operation
2.2.3 Emergency
The emergency switch (J0501, pin 9), when engaged, grounds the base of Q0662 via the EMERGENCY CONTROL line. This switches Q0662 off and resistor R0662 pulls the collector of Q0662 and the base of Q0663 to levels above two volts. Transistor Q0663 then switches on and pulls the collector of the npn transistor within Q0661 to ground level This enables the voltage regulators via Q0641. When the emergency switch is released, R0541 pulls the base of Q0662 up to 0.6 volts causing the collector of transistor Q0662 to go low (0.2 volts), switching Q0663 off.
While the radio is on, the µP monitors the voltage at the emergency input on the accessory connector via pin 60 and the GP5 IN ACC9 line. Three different conditions can exit: no emergency, emergency, and open connection to the emergency switch. If no emergency switch is connected or the connection to the emergency switch is broken, the resistive divider R0541/R0512 sets the voltage to about 4.7 volts. If an emergency switch is connected, a resistor to ground within the emergency switch reduces the voltage on line GP5 IN ACC9 to inform the µP that the emergency switch is operational. An engaged emergency switch pulls line GP5 IN ACC9 to ground level. Diode D0179 limits the voltage to protect the µP input.
While the EMERGENCY CONTROL signal is low and INT SW B+ is on, the µP starts execution, reads that the emergency input is active through the voltage level of line GP5 IN ACC9, and sets the DC POWER ON output of the ASFIC CMP, pin 13 to a logic high. This keeps Q0661 and Q0641 switched to allow a momentary press of the emergency switch to power up the radio. When the µP has finished processing the emergency press, it sets the DC POWER ON line to a logic 0. This turns off Q0661 and the radio turns off. Notice that the µP is alerted to the emergency condition via line GP5 IN ACC9. If the radio is already on when the emergency is triggered, the DC POWER ON signal is already high.
2.2.4 Mechanical On/Off
This refers to the on/off/volume knob located on the control head which is used to turn the radio on and off and control the volume.
If the radio is turned off and the on/off/volume knob is pressed, line ON OFF CONTROL (J0401, pin 11) goes high and switches the radio’s voltage regulators on as long as the button is pressed. The µP is alerted through line ON OFF SENSE (U0101, pin 6) which is pulled to low by Q0110 while the on/off/volume knob is pressed. In addition, an interrupt is generated at µP, pin 96. The µP asserts line DC POWER ON via ASFIC CMP, pin 13 high which keeps the radio switched on. The µP switches the radio off by setting DC POWER ON to low via ASFIC CMP pin 13.
2.2.5 Ignition
Ignition sense prevents the radio from draining the vehicle’s battery because the engine is not running.
When the IGNITION input (J0501, pin 10) goes above 5 volts, Q0661 is turned on via line IGNITION CONTROL. Q0661 turns on INT SW B+ and the voltage regulators by turning on Q0641 and the µP starts execution. The µP is alerted through line GP6 IN ACC10. While the on/off button is pressed, a high signal turns Q0181 on, which pulls µP, pin 74 to low. If the software detects a low state it asserts DC POWER ON via ASFIC, pin 13 high which keeps Q0661 and Q0641 and the radio switched on.
When the IGNITION input goes below 3 volts, Q0181 switches off and R0181 pulls µP, pin 74 to high. This alerts the software to switch off the radio by setting DC POWER ON to low. The next time the IGNITION input goes above 5 volts the above process is repeated.
Theory of Operation 2-5
2.2.6 Microprocessor Clock Synthesizer
The clock source for the µP system is generated by the ASFIC CMP (U0221). Upon power-up the synthesizer IC (FRAC-N) generates a 16.8 MHz waveform that is routed from the RF section to the ASFIC CMP, pin 34. For the main board controller the ASFIC CMP uses 16.8 MHz as a reference input clock signal for its internal synthesizer. The ASFIC CMP, in addition to the audio circuit, has a programmable synthesizer which can generate a synthesized signal ranging from 1200Hz to 32.769MHz in 1200Hz steps.
When power is first applied, the ASFIC CMP generates its default 3.6864MHz CMOS square wave UP CLK (on U0221, pin 28) and this is routed to the µP (U0101, pin 90). After the µP starts operation, it reprograms the ASFIC CMP clock synthesizer to a higher UP CLK frequency (usually 7.3728 or 14.7456 MHz) and continues operation.
The ASFIC CMP may be reprogrammed to change the clock synthesizer frequencies at various times depending on the software features that are executing. In addition, the clock frequency of the synthesizer is changed in small amounts if there is a possibility of harmonics of this clock source interfering with the desired radio receive frequency.
The ASFIC CMP synthesizer loop uses C0245, C0246 and R0241 to set the switching time and jitter of the clock output. If the synthesizer cannot generate the required clock frequency it switches back to its default 3.6864MHz output.
Because the ASFIC CMP synthesizer and the µP do not operate without the 16.8 MHz reference clock, the synthesizer and the voltage regulators should be checked first in debugging the system.
The µP uses crystal oscillator Y0131 and associated components to form a real time clock used to display the time on control heads (with display) or as time stamp for incoming calls or messages. The real time clock is powered from the voltage VSTBY to keep running while the radio is switched off. If the radio is disconnected from the supply voltage, the time must be reset.
2.2.7 Serial Peripheral Interface (SPI)
The µP communicates to many of the IC’s through its SPI port. This port consists of SPI TRANSMIT DATA (MOSI) (U0101, pin 100), SPI RECEIVE DATA (MISO) (U0101, pin 99), SPI CLK (U0101, pin 1) and chip select lines going to the various ICs. The BUS is a synchronous bus, in that the timing clock signal CLK is sent while SPI data (SPI TRANSMIT or RECEIVE) is sent. Therefore, whenever there is activity on either SPI TRANSMIT DATA or SPI RECEIVE DATA there should be a uniform signal on CLK.
The SPI TRANSMIT DATA sends serial data from the µP to a device, and SPI RECEIVE DATA is sends data from a device to the µP. On the controller there are two ICs on the SPI BUS: ASFIC CMP (U0221, pin 22), and EEPROM (U0111, pin 5). In the RF section there are two ICs on the SPI BUS: FRAC-N Synthesizer, and the Power Control IC (PCIC). The SPI TRANSMIT DATA and CLK lines going to the RF section are filtered by L0481/R0481 and L0482/R0482 to minimize noise. The chip select line CSX from U0101, pin 2 is shared by the ASFIC CMP, FRAC-N Synthesizer, and PCIC. Each of these IC‘s check the SPI data and when the sent address information matches the IC’s address, the data that follows is processed. The chip select lines for the EEPROM (EE CS), voice storage (VS CS), expansion board (EXP1 CS, EXP2 CS) and option board (OPT CS) are decoded by the address decoder U0141.
When the µP needs to program any of these IC’s it brings the chip select line CSX to a logic 0 and then sends the proper data and clock signals. The amount of data sent varies, for example the ASFIC CMP can receive up to 19 bytes (152 bits) while the PCIC can receive up to 6 bytes (48 bits). After the data is sent, the chip select line is returned to logic 1.
2-6 Theory of Operation
The option board interfaces are different in that the µP can also read data back from devices connected.The timing and operation of this interface is specific to the option connected, but the general pattern is as follows:
n Option board generates a service request via J0551, pin 29, line RDY, and µP, pin 79
n The main board asserts a chip select for that option board via U0141,pin 14, line OPT CS, J0551,pin 30
n The main board µP generates the CLK (J0551, pin 3)
n The main board µP writes serial data via J0551, pin 15 and reads serial data via J0551, pin 16
n When data transfer is complete the main board terminates the chip select and CLK activity
2.2.8 SBEP Serial Interface
The SBEP serial interface allows the radio to communicate with the Customer Programming Software (CPS), or the universal tuner via the Radio Interface Box (RIB). This interface connects to the microphone connector via control head connector (J0401, pin 8) or to the accessory connector J0401, pin 17 and comprises BUS+. The line is bi-directional, meaning that either the radio or the RIB can drive the line. The µP sends serial data via pin 98 and D0101 and it reads serial data via pin 97. Whenever the µP detects activity on the BUS+ line, it starts communication.
In addition, the SBEP serial interface is used to communicate with a connected control head. When a control head key is pressed or the volume knob is rotated, the line ON OFF CONTROL goes high. This turns on transistor Q0110 which pulls line ON OFF SENSE and µP, pin 6 to ground level. In addition, an interrupt is generated via R0109 (for SELECT 5 / MDC models) or R0128, U0125, pins 17/26 (for MPT models) and µP, pin 96. This indicates that the control head wants to start SBEP communication. The µP then reads the registers of the Universal Asynchronous Receiver Transmitter (UART) U0125 to determine whether the interrupt source was the control head or the UART (MPT models only). If the interrupt source was from the control head, the µP requests the data from the control head. The control head starts sending and after all data has been sent, the ON OFF CONTROL line goes low. The control head ignores any data on BUS+ during SBEP communication with the CPS or universal tuner.
2.2.9 General Purpose Input/Output
The controller provides eight general purpose lines (DIG1 through DIG8) available on the accessory connector J0501 to interface the external options. Lines DIG IN 1,3,5,6, are inputs, DIG OUT 2 is an output and DIG IN OUT 4,7,8 are bidirectional. The software and the hardware of the radio model define the function of each port.
DIG IN 1 can be used as external PTT input or others, set by the CPS. The µP reads this port via pin 77 and Q0171.
DIG OUT 2 can be used as normal output or external alarm output, set by the CPS. Transistor Q0173 is controlled by the µP via ASFIC CMP, pin 14.
DIG IN 3 is read by µP, pin 63 via resistor R0176
DIG IN 5 can be used as normal input or emergency input, set by the CPS. The µP reads this port via R0179 and µP, pin 60. Diode D0179 limits the voltage to protect the µP input.
DIG IN 6 can be used as normal input, set by the CPS. The µP reads this port via, pin 74 and Q0181.
DIG IN OUT 4,7,8 are bidirectional and use the same circuit configuration. Each port uses an output transistor Q0177, Q0183, Q0185 controlled by µP, pins 46, 47, 53. The ports are read by µP, pins 75, 54, 76. To use one of the ports as input the µP must turn off the corresponding output transistor.
In addition the signals from DIG IN 1, DIG IN OUT 4 are fed to the option board connector J0551 and the expansion board connector J0451.
Theory of Operation 2-7
2.2.10 Normal Microprocessor Operation
The µP is configured to operate in one of two modes: expanded or bootstrap. In expanded mode, the µP uses external memory devices to operate. In bootstrap mode, the µP uses only its internal memory.
During normal operation of the radio, the µP is operating in expanded mode and the µP (U0101) has access to three external memory devices: U0121 (EEPROM), U0122 (SRAM), and U0111 (EEPROM). Also, within the µP there are three KBs of internal RAM, as well as logic to select external memory devices.
The external EEPROM (U0111) space contains the information in the radio which is customer specific, referred to as the codeplug. This information consists of items such as:
n Band in which the radio operates
n What frequencies are assigned to what channel
n Tuning information.
The external SRAM (U0122) as well as the µP’s own internal RAM space are used for temporary calculations required by the software during execution. All of the data stored in both of these locations is lost when the radio powers off (See the particular device subsection for more details).
The µP provides an address bus of 16 address lines (ADDR 0 - ADDR 15), and a data bus of eight data lines (DATA 0 - DATA 7). There are also three control lines: CSPROG (U0101, pin 38) to chip select U0121, pin 30 (EEPROM), CSGP2 (U0101, pin 41) to chip select U0122, pin 20 (SRAM) and PG7 R W (U0101, pin 4) to select whether to read or to write. The external EEPROM (U0111,pin 1), the OPTION BOARD and EXPANSION BOARD are selected by three lines of the µP using address decoder U0141. The chips ASFIC CMP / FRAC-N / PCIC are selected by line CSX (U0101, pin 2).
When the µP is functioning normally, the address and data lines are toggling at CMOS logic levels. Specifically, the logic high levels should be between 4.8 to 5.0 volts, and the logic low levels should be between 0 to 0.2 volts. No other intermediate levels should be observed, and the rise and fall times should be <30ns.
The low-order address lines (ADDR 0 - ADDR 7) and the data lines (DATA 0-DATA 7) should be toggling at a high rate, e. g., you should set your oscilloscope sweep to 1µs/div. or faster to observe individual pulses. High speed CMOS transitions should also be observed on the µP control lines.On the µP the lines XIRQ (U0101, pin 48), MODA LIR (U0101, pin 58), MODB VSTPY (U0101, pin 57) and RESET (U0101, pin 94) should be high at all times during normal operation. Whenever a data or address line becomes open or shorted to an adjacent line, a common symptom is that the RESET line goes low periodically, with the period being in the order of 20msecs. In the case of shorted lines you may also detect the line periodically at an intermediate level, i.e. around 2.5 volts when two shorted lines attempt to drive to opposite rails.
The MODA LIR (U0101, pin 58) and MODB VSTPY (U0101, pin 57) inputs to the µP must be at a logic 1 for it to start executing correctly. After the µP starts execution it periodically pulses these lines to determine the desired operating mode. While the central processing unit (CPU) is running, MODA LIR is an open-drain CMOS output which goes low whenever the µP begins a new instruction. One instruction typically requires 2-4 external bus cycles, or memory fetches.
There are eight analog-to-digital converter ports (A/D) on U0101 labelled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which is read by the software to take appropriate action.
For example U0101, pin 67 is the battery voltage detect line. R0671 and R0672 form a resistor divider on INT SWB+. With 30K and 10K and a voltage range of 11V to 17V, that A/D port is 2.74V to 4.24V which is then be converted to ~140 to 217 respectively.
2-8 Theory of Operation
U0101-69 is the high reference voltage for the A/D ports on the µP. Capacitor C0101 filters the +5 volt reference. If this voltage is lower than +5 volt, the A/D reading is incorrect. Likewise U0101, pin 68 is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings could be incorrect.
2.2.11 Static Random Access Memory (SRAM)
The SRAM (U0121) contains temporary radio calculations or parameters that can change very frequently, and which are generated and stored by the software during its normal operation. The information is lost when the radio is turned off.
The device allows an unlimited number of write cycles. SRAM accesses are indicated by the CS signal U0122, pin 20 which is the result of U0101-CSGP2 going low. U0122 is commonly referred to as the external RAM as opposed to the internal RAM which is the 3 KBs of RAM (part of the 68HC11FL0). Both RAM spaces serve the purpose. However, the internal RAM is used for the calculated values which are accessed most often.
Capacitor C0122 filters out any ac noise which may ride on +5V at U0122.
2.3 Controller Board Audio and Signalling Circuits
2.3.1 Audio Signalling Filter IC with Compander (ASFIC CMP)
The ASFIC CMP (U0221) used in the controller has the four following functions:
n RX/TX audio shaping, i.e. filtering, amplification, attenuation
n RX/TX signalling, PL/DPL/HST/MDC/MPT
n Squelch detection
n µP clock signal generation
The ASFIC CMP is programmable through the SPI BUS (U0221-20/21/22), normally receiving 19 bytes. This programming sets up various paths within the ASFIC CMP to route audio and/or signalling signals through the appropriate filtering, gain, and attenuator blocks. The ASFIC CMP also has six general control bits (GCB0-5) which are CMOS level outputs and used for NOISE BLANKER (GCB0) in low band radios, EXTERNAL ALARM (GCB1), and DC POWER ON (GCB2) to switch the voltage regulators (and the radio) on and off. GCB3 controls U0251, pin 11 to output either RX FLAT AUDIO or RX FILTERED AUDIO on the accessory connector, pin 11. GCB4 controls U0251, pin 10 to use either the external microphone input or the voice storage playback signal. GCB5 switches the audio PA on and off.
Theory of Operation 2-9
2.3.2 Transmit Audio Circuits
Refer to Figure 2-3 for the descriptions that follow.
Figure 2-3. Transmit Audio Paths
2.3.3 Microphone Input Path
The radio supports two microphone input paths. One from the control head external microphone accessory connector J0501, pin 2, and one from the microphone auxiliary path (FLAT TX AUDIO) via accessory connector J0501, pin 5. The microphones require a DC biasing voltage provided by a resistive network.
The two microphone audio input paths enter the ASFIC CMP at U0221, pin 48 (external microphone) and U0221, pin 46 (auxiliary microphone).
The microphone is plugged into the radio control head which is connected to the controller board via J0401, pin 9. The signal is then routed via R0409 and line INT MIC to R0205. Resistors R0201 and R0202 provide 9.3Vdc bias. Resistive divider R0205/R0207 divide the input signal by 5.5 and provide input protection for the CMOS amplifier input. R0202 and C0201 provide a 560 ohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit.
Capacitor C0204 provides dc blocking. The audio signal at U0221, pin 46 (TP0221) is approximately 14mV for 1.5kHz or 3kHz of deviation with 12.5kHz or 25kHz channel spacing.
The external microphone signal enters the radio on accessory connector J0501, pin 5, then it is routed via line EXT MIC to resistor R0206. Resistors R0201 and R0204 provide a 9.3Vdc bias. Resistive divider R0206 / R0208 divide the input signal by 5.5 and provide input protection for the CMOS amplifier input. R0204 and C0201 provide a 560 ohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit. Capacitor C0254 provides dc blocking.
MIC IN
MOD INTORF
SECTION(SYNTHESIZER)
3644
33
40
J0501
ACCESSORYCONNECTOR
J0401
CONTROL HEADCONNECTOR
MIC
EXT MIC
FLAT TXAUDIO
42
32
5
48
46
9
2
INOUT
OPTIONBOARD
FILTERS ANDPREEMPHASIS
HS SUMMER
SPLATTERFILTER
LS SUMMER
LIMITER
ATTENUATOR
VCO ATN
TX RTNTX SND
MICINT
AUX TX
ASFIC_CMP U0221
TP0221
TP0222
MICEXT
J0451 J0551
18FLATTX RTN
EXPANSION BOARD
31IN
39 OUT
2-10 Theory of Operation
Multi switch U0251 controlled by ASFIC CMP port GCB4 selects either the external microphone input signal or the voice storage playback signal for entering the ASFIC CMP at pin 48. The audio signal at U0221-48 (TP0222) is approximately 14mVrms for 1.5kHz or 3kHz of deviation with 12.5kHz or 25kHz channel spacing.
The FLAT TX AUDIO signal from accessory connector J0501-5 is fed to the ASFIC CMP (U0221, pin 42) through C0541 and line FLAT TX RTN.
The ASFIC has an internal AGC that controls the gain in the microphone audio path. The AGC can be disabled/enabled by the µP. Another feature that can be enabled/disabled in the ASFIC is the VOX. This circuit, along with the capacitor at U0221, pin 7, provides a dc voltage allows the µP to detect microphone audio. The ASFIC can also be programmed to route the microphone audio to a speaker for public address operation.
2.3.3.1 PTT Sensing and TX Audio Processing
The microphone PTT signal coming from the control head is sent via the SBEP bus to the µP. An external PTT can be generated by grounding pin 3 on the accessory connector if this input is programmed for PTT by the CPS. When microphone PTT is sensed, the µP always configures the ASFIC CMP for the "internal" microphone audio path, and external PTT results in the external microphone audio path being selected.
Inside the ASFIC CMP, the microphone audio is filtered to eliminate frequency components outside the 300-3000Hz voice band, and pre-emphasized if pre-emphasis is enabled. The signal is then limited to prevent the transmitter from over deviating. The limited microphone audio is then routed through a summer, which is used to add in signalling data, and then to a splatter filter to eliminate high frequency spectral components that could be generated by the limiter. The audio is then routed to an attenuator, which is tuned in the factory or the field to set the proper amount of FM deviation. The TX audio emerges from the ASFIC CMP at U0221-40 MOD IN, at which point it is routed to the RF section.
2.3.3.2 TX Secure Audio (optional)
The audio follows the normal transmit audio processing until it emerges from the ASFIC CMP TX SND pin (U0221-44), which is fed to the Secure board residing at option connector J0551-33. The Secure board contains circuits to amplify, encrypt, and filter the audio. The encrypted signal is then fed back from J0551-32 to the ASFIC CMP TX RTN input (U0221-36). The signal level at this pin should be about 65mVrms. The signal is then routed through the TX path in the ASFIC CMP and emerges at MOD IN pin 40.
2.3.3.3 Option Board Transmit Audio
The audio follows the normal transmit audio processing until it emerges from the ASFIC CMP TX SND pin (U0221-44), which is fed to the option board residing at option connector J0551-33. The option board contains circuits to process the audio. The processed signal is then fed back from J0551-32 to the ASFIC CMP TX RTN input (U0221-36). The signal level at this pin is approximately 65mVrms. The signal is then routed through the TX path in the ASFIC CMP and out at MOD IN, pin 40.
Theory of Operation 2-11
2.3.4 Transmit Signalling Circuits
Refer to Figure 2-4 for the descriptions that follow.
Figure 2-4. Transmit Signalling Paths
The three types of transmit signalling paths are as follows:
• Sub-audible data (PL/DPL/connect tone) summed with transmit voice or signalling• DTMF data for telephone communication between trunked and conventional systems• Audible signalling
2.3.4.1 Sub-Audible Data (PL/DPL)
Sub-audible data implies signalling whose frequency/data rate is below 300Hz. PL and DPL waveforms are used for conventional operation and connect tones for trunked voice channel operation. The trunking connect tone is simply a PL tone at a higher deviation level than PL in a conventional system. Although it is referred to as "sub-audible data," the actual frequency spectrum of these waveforms may be as high as 250 Hz, which is audible to the human ear. However, the radio receiver filters out any audio below 300Hz, so these tones are never heard in the actual system.
Only one type of sub-audible data can be generated by U0221 (ASFIC CMP) at any one time. The process is as follows, using the SPI BUS, the µP programs the ASFIC CMP to set up the proper low-speed data deviation and select the PL or DPL filters. The µP then generates a square wave which strobes the ASFIC PL / DPL encode input LSIO U0221-18 at twelve times the desired data rate. For example, for a PL frequency of 103Hz, the frequency of the square wave is 1236Hz.
This drives a tone generator inside U0221 which generates a staircase approximation to a PL sine wave or DPL data pattern. This internal waveform is then low-pass filtered and summed with voice or data. The resulting summed waveform then appears on U0221-40 (MOD IN), where it is sent to the RF board as previously described for transmit audio. A trunking connect tone would be generated in the same manner as a PL tone.
NOTE All three types are supported by the hardware while the radio software determines which signalling type is available.
2-12 Theory of Operation
2.3.4.2 High Speed Data
High speed data refers to the 3600 baud data waveforms, known as inbound signalling words (ISWs) used in a trunking system for high speed communication between the central controller and the radio. To generate an ISW, the µP first programs the ASFIC CMP (U0221) to the proper filter and gain settings. It then begins strobing U0221-19 (HSIO) with a pulse when the data is supposed to change states. U0221’s 5-3-2 state encoder, which is in a 2-state mode, is then fed to the post-limiter summer block and then the splatter filter. From that point, it is routed through the modulation attenuators and then out of the ASFIC CMP to the RF board. MPT 1327 and MDC are generated in much the same way as trunking ISW. However, in some cases these signals may also pass through a data pre-emphasis block in the ASFIC CMP. Also these signalling schemes are based on sending a combination of 1200 Hz and 1800 Hz tones only. Microphone audio is muted during high speed data signalling.
2.3.4.3 Dual Tone Multiple Frequency (DTMF) Data
DTMF data is a dual tone waveform used during phone interconnect operation. It is the same type of tones which are heard when using a "Touch Tone" telephone.
There are seven frequencies, with four in the low group (697, 770, 852, 941Hz) and three in the high group (1209, 1336, 1477Hz).
The high-group tone is generated by the µP (U0101-44) strobing U0221-19 at six times the tone frequency for tones less than 1440Hz or twice the frequency for tones greater than 1440Hz. The low group tone is generated by the ASFIC CMP, controlled by the µP via SPI bus. Inside U0221 the low-group and high-group tones are summed (with the amplitude of the high group tone being approximately 2 dB greater than that of the low group tone) and then pre-emphasized before being routed to the summer and splatter filter. The DTMF waveform then follows the same path as described for high-speed data
Theory of Operation 2-13
2.3.5 Receive Audio Circuits
Refer to Figure 2-5 for the descriptions that follow.
Figure 2-5. Receive Audio Paths
2.3.5.1 Squelch Detect
The squelch detect circuits are all contained within the ASFIC CMP as shown in Figure 2-5. The radio’s RF circuits are constantly producing an output (DISC AUDIO) at the discriminator IF IC. The output signal is applied to the ASFIC CMP’s squelch detect circuits DISC input (U0221, pin 2). The squelch signal entering the ASFIC CMP is amplified, filtered, attenuated, and rectified. It is then sent to a comparator to produce an active high signal (CH ACT). The squelch circuit produces the SQ DET signal at U0221, pin 17 from the CH ACT input signal. The state of CH ACT and SQ DET go from a low (logic 0) to a high (logic 1) when an RF carrier is detected. The CH ACT and SQ DET signals from the squelch circuit are applied to the µP pins 84 and 83 respectively.
SQ DET is used to determine all audio mute/unmute decisions except for conventional scan. In this case CH ACT is a pre-indicator as it occurs slightly faster than SQ DET.
FLT RX AUDIO
J0501
11
16
1 EXTERNALSPEAKER
INTERNALSPEAKER
ACCESSORYCONNECTOR
CONTROLHEADCONNECTOR
HANDSETAUDIO
7
2
3
J0401
INTSPKR-
SPKR +
SPKR -
1
9
2
J0551
4110
INTSPKR+
4
6
DISC
ASFIC_CMPU0221
AUDIO PA
U0271
IN
OPTIONBOARD
IN
OUTVOLUMEATTEN.
FILTER ANDDEEMPHASIS
17
MICRO CONTROLLER
U0101
80
FROMRF
SECTION(IF IC)
LIMITER, RECTIFIERFILTER, COMPARATOR
SQ DET
SQUELCHCIRCUIT
16
PL FILTER LIMITER
CH ACT
AUX RX43
18LS IO
U IO AUDIO
8384
39URX OUT
17J0451
EXPANSIONBOARD
DISCAUDIO
34
2835
85
IN
7
2-14 Theory of Operation
2.3.5.2 Audio Processing and Digital Volume Control
The receiver audio signal (DISC AUDIO) enters the controller section from the IF IC where it is AC coupled by C0227 before entering the ASFIC CMP via the DISC input at U0221, pin 2. The signal is then applied to both the audio and the PL/DPL paths.
The signal on the audio path is applied to a programmable amplifier, whose setting is based on the channel bandwidth being received, an LPF filter to remove any frequency components above 3000Hz, and HPF filter to strip off any sub-audible data below 300Hz. The recovered audio passes through a de-emphasis filter, if it is enabled, to compensate for pre-emphasis which is used to reduce the effects of FM noise. The audio then goes through the 8-bit programmable attenuator whose level is set depending on the value of the volume control. The resulting filtered audio signal is passed through an output buffer within the ASFIC CMP and exits the ASFIC CMP at the AUDIO output (U0221, pin 41).
The µP programs the attenuator, using the SPI BUS, based on the volume setting. The minimum/maximum settings of the attenuator are set by codeplug parameters.
Since sub-audible signalling is summed with voice information on transmit, it must be separated from the voice information before processing. Any sub-audible signal enters the ASFIC CMP from the IF IC at DISC U0221, pin 2, then through the PL/DPL path. The signal first passes through one of two low pass filters, either PL low pass filter, or DPL/LST low pass filter. Either signal is then filtered, goes through a limiter, and exits the ASFIC CMP at LSIO (U0221, pin 18). At this point the signal appears as a square wave version of the sub-audible signal the radio received. The µP (U0101, pin 80) decodes the signal directly to determine if it is the tone/code currently active on that mode.
2.3.5.3 Audio Amplification Speaker (+) Speaker (-)
The output of the ASFIC CMP’s digital volume pot (U0221, pin 41) is routed through dc blocking capacitor C0256 to a buffer formed by U0211, pin 1. Resistors R0256 and R0268 set the correct input level to the audio PA (U0271). This is necessary because the gain of the audio PA is 46 dB and the ASFIC CMP output is capable of overdriving the PA unless the maximum volume is limited. Resistor R0267 and capacitor C0267 increase frequency components below 350 Hz.
The audio then passes through R0269 and C0272 which provides AC coupling and low frequency roll-off. C0273 provides high frequency roll-off as the audio signal is routed to audio power amplifier U0271, pins 1 and 9 which are both tied to the received audio. The audio power amplifier has one inverted and one non-inverted output that produces the differential audio output SPK+/SPK- (U0271, pins 4 and 6).
The audio PA’s dc biases are not activated until the audio PA is enabled at pin 8. The audio PA is enabled via the ASFIC CMP (U0221, pin 38). When the base of Q0271 is low, the transistor is off and U0271-8 is high via pull-up resistor R0273, and the audio PA is ON. The voltage at U0273-8 must be above 8.5Vdc to properly enable the device. If the voltage is between 3.3 and 6.4V, the device is active, but has its input (U0273, pins 1 and 9) off. This is a mute condition used to prevent an audio pop when the PA is enabled.
The SPK+ and SPK- outputs of the audio PA are dc biased and vary proportionately with FLT A+ (U0271, pin 7). FLT A+ of 11V yields a dc offset of 5V, and FLT A+ of 17V yields a dc offset of 8.5V. If either of these lines is shorted to ground, it is possible that the audio PA could be damaged. SPK+ and SPK- are routed to the accessory connector (J0501, pins 1 and 16) and to the control head connector (J0401, pins 2 and 3).
Theory of Operation 2-15
2.3.5.4 Handset Audio
Certain accessories have a self contained speaker which requires a different voltage level than that provided by U0271. For those devices, HANDSET AUDIO is available at control head connector J0401, pin 7.
The received audio from the output of the ASFIC CMP’s digital volume attenuator and buffered by U0211, pin 1, is also routed to U0211, pin 9 where it is amplified by 20 dB. This is set by the 10k/100k combination of R0261 and R0262. This signal is routed from the output of the op amp U0211 to J0401-7. The control head sends this signal directly out to the microphone jack. The maximum value of this output is 6.6Vp-p.
2.3.5.5 Filtered Audio and Flat Audio
The ASFIC CMP audio output at U0221, pin 39 is filtered and de-emphasized, but has not yet gone through the digital volume attenuator. From ASFIC CMP U0221, pin 39 the signal is routed via R0251 through gate U0251, pin 12 and AC coupled to U0211, pin 2. The gate controlled by ASFIC CMP port GCB3 (U0221, pin 35) selects between the filtered audio signal from the ASFIC CMP at pin 39 (URXOUT) or the unfiltered flat audio signal from the ASFIC CMP, U10, pin 10. Resistors R0251 and R0253 determine the gain of op amp U0211, pin 2 for the filtered audio while R0252 and R0253 determine the gain for the flat audio.The output of U0253, pin 7 is then routed to J0501, pin 11 via dc blocking capacitor C0542. Note that any volume adjustment of the signal on this path must be done by the accessory.
2.3.5.6 RX Secure Audio Option
Discriminator audio, which is now encrypted audio, follows the normal receive audio processing until it is output from the ASFIC CMP UIO (U0221, pin 10), which is fed to the secure audio board at option connector J0551, pin 35. On the secure board, the encrypted signal is converted back to normal audio format, then fed back through J0551, pin 34 to AUX RX of the ASFIC CMP (U0221, pin 43). The signal then follows a path identical to the conventional receive audio, where it is filtered (0.3 - 3kHz) and deemphasized. The signal URX SND from the ASFIC CMP (U0221-39) also routed to option connector J0551, pin 28, is not used for the secure board, but for other option boards.
2.3.5.7 Option Board Receive Audio
Unfiltered audio from the ASFIC CMP (U0221, pin 10) enters the option board at connector J0551, pin 35. Filtered audio from the ASFIC CMP URXOUT (U0221, pin 39) enters the option board at connector J0551, pin 28. On the option board, the signal is processed, then fed back through (J0551, pin 34) to AUX RX of the ASFIC CMP (U0221, pin 43). The signal then follows a path identical to conventional receive audio, where it is filtered (0.3 - 3kHz) and de-emphasized.
2-16 Theory of Operation
2.3.6 Receive Signalling Circuits
Refer to Figure 2-6 for the descriptions that follow.
Figure 2-6. Receive Signalling Paths
2.3.6.1 Sub-Audible Data (PL/DPL) and High Speed Data Decoder
The ASFIC CMP (U0221) filters and limits all received data. The data enters the ASFIC CMP at input DISC (U0221, pin 2). Inside U0221 the data is filtered according to data type (HS or LS), then it is limited to a 0-5V digital level. The MDC and trunking high speed data appear at U0221, pin 19, where it connects to the µP U0101, pin 82
The low speed limited data output (PL, DPL, and trunking LS) appears at U0221, pin 18, where it connects to the µP U0101, pin 80.
The low speed data is read by the µP at twice the frequency of the sampling waveform; a latch configuration in the ASFIC CMP stores one bit every clock cycle. The external capacitors C0236, and C0244 set the low frequency pole for a zero crossings detector in the limiters for PL and HS data. The hysteresis of these limiters is programmed based on the type of received data.
2.3.6.2 Alert Tone Circuits
When the software determines that it needs to give the operator an audible feedback for a good key press, or for a bad key press, or radio status (trunked system busy, phone call, circuit failures), it sends an alert tone to the speaker. It does so by sending SPI BUS data to U0221 which sets up the audio path to the speaker for alert tones. The alert tone itself can be generated in one of two ways: internally by the ASFIC CMP, or externally using the µP and the ASFIC CMP.
The allowable internal alert tones are 304, 608, 911, and 1823Hz. In this case a code contained within the SPI BUS load to the ASFIC CMP sets up the path and determines the tone frequency, and at what volume level to generate the tone. (It does not have to be related to the voice volume setting).
For external alert tones, the µP can generate any tone within the 100-3000Hz audio band. This is accomplished by the µP generating a square wave which enters the ASFIC CMP at U0221-19. Inside the ASFIC CMP this signal is routed to the alert tone generator
The output of the generator is summed into the audio chain just after the RX audio de-emphasis block. Inside U0221 the tone is amplified and filtered, then passed through the 8-bit digital volume attenuator, which is typically loaded with a special value for alert tone audio. The tone exits at U0221-41 and is routed to the audio PA like receive audio.
DET AUDIODISCRIMINATOR AUDIO
FROM RF SECTION(IF IC)
19
18
25
2
82
80
DISC
PLCAP2
LSIO
HSIODATA FILTERAND DEEMPHASIS LIMITER
FILTER LIMITER
ASFIC_CMPU0221
MICROCONTROLLER
U0101
85
44
8
PLEAP
Theory of Operation 2-17
2.3.6.3 Voice Storage Option
The Voice Storage (VS) option can be used to store audio signals coming from the receiver or from the microphone. Any stored audio signal can be played back over the radio’s speaker or sent out via the radio’s transmitter.
The Voice Storage option can by placed on the controller section or on an additional option board which resides on option board connector J0551. Voice Storage IC U0301 provides all required functionality and is powered from 3.3 volts regulator U0351 which is powered from the regulated 5 volts. Dual shottky diode D0301 reduces the supply voltage for U0301 to 3 volts. The µP controls U0301 via SPI bus lines CLK (U0301-8), DATA (U0301-10) and MISO (U0301-11). To transfer data, the µP first selects the U0301 via address decoder U0141, line VS CS and U0301 pin 9. Then the µP sends data through line DATA and receives data through line MISO. Pin 2 (RAC) of U0301 indicates the end of a message row by a low state for 12.5 ms and connects to µP pin 52. A low at pin 5 (INT), which is connected to µP pin 55 indicates that the Voice Storage IC requires service from the µP.
Audio, either from the radio’s receiver or from one of the microphone inputs, emerges the ASFIC CMP (U0221) at pin 43, is buffered by op-amp U0341-1, then enters the voice storage IC U0301 at pin 25. During playback, the stored audio emerges U0301 at pin 20. To transmit the audio signal, it is fed through resistive divider R0344 / R0345 and line VS MIC to input selector IC U0251. When this path is selected by the µP via ASFIC CMP port GCB 4, the audio signal enters the ASFIC CMP at pin 48 and is processed like normal transmit audio. To play the stored audio over the radio’s speaker, the audio from U0301 pin 20 is buffered by op-amp U0341-2 and fed via switch U0342 and line FLAT RX SND to ASFIC CMP pin 10 (UIO). In this case, this ASFIC CMP pin is programmed as input and feeds the audio signal through the normal receiver audio path to the speaker or handset. Switch U0342 is controlled by the µP via ASFIC CMP port GCB 4 and feeds the stored audio only to the ASFIC CMP port UIO when it is programmed as input.
2.4 UHF (403-470 MHz) Receiver Front-EndThe receiver is able to cover the UHF range from 403 to 470 MHz. It consists of four major blocks: front-end bandpass filters and preamplifier,
• First mixer• 1st IF• 2nd IF • Receiver back-end
Two varactor tuned bandpass filters perform antenna signal pre-selection. A cross over quad diode mixer converts the signal to the 1st IF of 44.85 MHz. Low side first injection is used.
2-18 Theory of Operation
Figure 2-7. UHF Receiver Block Diagram
The 2-pole 44.85 MHz crystal filters in the 1st IF section and two pairs of 455 kHz ceramic filters in the 2nd IF section provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT. The 2nd IF at 455 kHz is mixed, amplified, and demodulated in the IF IC. The processing of the demodulated audio signal is performed by an audio processing IC located in the controller section.
Demodulator
1. Crystal Filter
MixerVaractor Tuned Filter
RF AmpVaractor Tuned Filter
Pin Diode Antenna SwitchRF Jack
Control Voltagefrom PCIC First LO
from FGU
Recovered Audio
RSSI
Second LO
2. Crystal Filter
455kHz Filter(25kHz)
455kHz Filter(25kHz)
455kHz Filter(12.5kHz)
455kHz Filter(12.5kHz)
Sw
itch
Sw
itch
Sw
itch
Sw
itch
Limiter
1. IF Amp
2. IF Amp
Filter Bank Selectionfrom Synthesizer IC
Harmonic Filter
BWSELECT
Theory of Operation 2-19
2.4.1 Front-End Band-Pass Filters and Pre-Amplifier
The received signal from the radio’s antenna connector is first routed through the harmonic filter and antenna switch, which are part of the RF power amplifier circuits, before being applied to the receiver pre-selector filter (C4001, C4002, D4001 and associated components). The 2-pole pre-selector filter tuned by the varactor diodes D4001 and D4002 pre-selects the incoming signal (RXIN) from the antenna switch to reduce spurious effects to following stages. The tuning voltage (FECTRL_1) ranging from 2 volts to 8 volts is controlled by pin 20 of PCIC (U4501) in the Transmitter section. A dual hot carrier diode (D4003) limits any inband signal to 0 dBm to prevent damage to the pre-amplifier.
The RF pre-amplifier is an SMD device (Q4003) with collector base feedback to stabilize gain, impedance, and intermodulation. The collector current of approximately 11-16 mA is drawn from the 9.3 volt supply via L4003 and R4002. A 3dB pad (R4006,R4007,R4011 and R4008 - R4010) stabilizes the output impedance and intermodulation performance.
A second 2-pole varactor tuned bandpass filter provides additional filtering of the amplified signal. The varactor diodes D4004 and D4005 are controlled by the same signal FECTRL_1, which controls the pre-selector filter. A following 1 dB pad (R4013 - R4015) stabilizes the output impedance and intermodulation performance.
2.4.2 First Mixer and 1st Intermediate Frequency (IF)
The signal coming from the front-end is converted to the first IF (44.85 MHz) using a cross over quad diode mixer (D4051). Its ports are matched for incoming RF signal conversion to the 44.85 MHz IF using low side injection via matching transformers T4051 and T4052. The injection signal (RXINJ) coming from the RX VCO buffer (Q4332) is filtered by the lowpass filter consisting of (L4053, L4054, C4053 - C4055) followed by a matching transformer T4052 and has a level of approximately 15dBm.
The mixer IF output signal (IF) from transformer T4501pin 2 is fed to the first two pole crystal filter FL3101. The filter output in turn is matched to the following IF amplifier.
The IF amplifier Q3101 is actively biased by a collector base feedback (R3101, R3106) to a current drain of approximately 5 mA drawn from the 5 volt supply. Its output impedance is matched to the second two pole crystal filter FL3102. The signal is further amplified by a preamplifier (Q3102) before going into pin 1 of IFIC (U3101).
A dual hot carrier diode (D3101) limits the filter output voltage swing to reduce overdrive effects at RF input levels above -27 dBm.
2.4.3 2nd Intermediate Frequency (IF) and Receiver Back-End
The 44.85 MHz 1st IF signal from the second IF amplifier feeds the IF IC (U3101) at pin1. Within the IF IC the 44.85 MHz high IF signal mixes with the 44.395 MHz second local oscillator (2nd LO) to produce the low IF signal at 455 kHz. The 2nd LO frequency is determined by crystal Y3101. The 2nd IF signal is amplified and filtered by an external pair of 455 kHz ceramic filters (FL3112, FL3114) for 20/25 kHz channel spacing or FL3111 and FL3113/F3115 for 12.5 kHz channel spacing. These pairs are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14).
The IF IC contains a quadrature detector using a ceramic phase-shift element (Y3102) to provide audio detection. Internal amplification provides an audio output level of 120 mV rms (at 60% deviation) from U3103 pin 8 (DISCAUDIO) which is fed to the ASFIC_CMP (U0221) pin 2 (part of the Controller circuits).
A received signal strength indicator (RSSI) signal is available at U3101 pin 5, having a dynamic range of 70 dB. The RSSI signal is interpreted by the µP (U0101 pin 63) and is available at accessory connector J0501-15.
2-20 Theory of Operation
2.5 Transmitter Power Amplifier (PA) 40 WThe radio’s 40W power amplifier (PA) is a four stage amplifier used to amplify the output from the VCOBIC to the radio transmit level. It consists of the following four stages in the line-up. The first stage is a LDMOS predriver (U4401) that is controlled by pin 4 of PCIC (U4501) via Q4473 (CNTLVLTG). It is followed by another LDMOS stage (Q4421), an LDMOS stage (Q4431), and a bipolar final stage (Q4441).
Figure 2-8. UHF Transmitter Block Diagram
Device Q4401 is surface mounted. Q4421, Q4431 and Q4441 are directly attached to the heat sink.
2.5.1 Power Controlled Stage
The first stage (U4401) amplifies the RF signal from the VCO (TXINJ) and controls the output power of the PA. The output power of the transistor U4401 is controlled by a voltage control line feed from the PCIC pin4(U4501). The control voltage simultaneously varies the bias of two FET stages within U4401. This biasing point determines the overall gain of U4401 and therefore its output drive level to Q4421, which in turn controls the output power of the PA.
In receive mode the voltage control line is at ground level and turns off Q4473 which in turn switches off the biasing voltage to U4401.
2.5.2 Pre-Driver Stage
The next stage is a 13dB gain LDMOS device (Q4421) which requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line PCIC_MOSBIAS_1 is set in transmit mode by PCIC pin 24 and fed to the gate of Q4421 via the resistive network R4407, R4408, R4416 and R4415. The bias voltage is tuned in the factory.
PCIC
Pin Diode Antenna Switch RF Jack
Antenna
Harmonic Filter
PowerSense
PA-FinalStage
PADriver
From VCO
ControlledStage
Vcontrol
Bias 1
Bias 2
To Microprocessor
TemperatureSense
SPI BUS
ASFIC_CMP
PAPWRSET
To Microprocessor
Theory of Operation 2-21
2.5.3 Driver Stage
The following stage is an enhancement-mode N-Channel MOSFET device (Q4431) providing a gain of 10dB. This device also requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line Bias_2_UHF_PA_1 is set in transmit mode by the ASFIC and fed to the gate of Q4431 via the resistive network R4630, R4631, and R4632. This bias voltage is also tuned in the factory. If the transistor is replaced, the bias voltage must be tuned using the Customer Programming Software (CPS). Care must be taken not to damage the device by exceeding the maximum allowed bias voltage. The device’s drain current is drawn directly from the radio’s dc supply voltage input, A+, via L4421.
2.5.4 Final Stage
The final stage uses the bipolar device Q4441. The device’s collector current is also drawn from the radio’s dc supply voltage input. To maintain class C operation, the base is dc-grounded by a series inductor (L4441) and a bead (L4440). A matching network consisting of C5541-C5544 and two striplines transform the impedance to 50 Ohms and feeds the directional coupler.
2.5.5 Bi-Directional Coupler
The Bi-directional coupler is a microstrip printed circuit, which couples a small amount of the forward and reverse power of the RF power from Q4441. The coupled signal is rectified to an output power proportional dc voltage by the diodes D4451 & D4452 and sent to the RFIN of the PCIC. The PCIC controls the gain of stage U4401 as necessary to hold this voltage constant. This ensures the forward power out of the radio is held to a constant value.
2.5.6 Antenna Switch
The antenna switch utilizes the existing dc feed (A+) to the last stage device (Q4441). Basic operation is to have both PIN diodes D4471 and D4472 turns on during key-up by forward biasing them. It is achieve by pulling down the voltage at the cathode end of D4472 to around 11.8V (0.7V drop across each diode). The current through the diodes needs to be set around 80mA to fully open the transmit path through resistor R4496. Q4472 is a current source controlled by Q4471 and is eventually connected to pin ANO of PCIC. VR4471 ensures the voltage at the resistor R4511 never exceeds 5.6V
2.5.7 Harmonic Filter
Inductors L4491, L4492, L4493 and capacitors C4448, C4493,C4494, C4496 and C4498 form a low-pass filter to attenuate harmonic energy from the transmitter. R4491 is used to drain any electrostatic charges that might otherwise build up on the antenna. The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits, improving spurious response rejection.
2.5.8 Power Control
The transmitter uses the Power Control IC (PCIC, U4501) to control the power output of the radio. A portion of the forward RF power from the transmitter is sampled by the bi-directional coupler and rectified, to provide a dc voltage to the RFIN port of the PCIC (pin 1) which is proportional to the sampled RF power.
The PCIC has internal digital to analog converters (DACs) which provide the reference voltage of the control loop. The reference voltage level is programmable through the SPI line of the PCIC. This reference voltage is proportional to the desired power setting of the transmitter, and is factory programmed at several points across the frequency range of the transmitter to offset frequency response variations of the transmitter’s power detector circuits.
2-22 Theory of Operation
The PCIC provides a dc output voltage at pin 4 (INT) and applied as CNTLVLTG to the power-adjust input pin of the first transmitter stage U4401. This adjusts the transmitter power output to the intended value. Variations in forward or reflected transmitter power cause the dc voltage at pin 1 to change, and the PCIC adjusts the control voltage above or below its nominal value to raise or lower output power.
Capacitors C4502-4, in conjunction with resistors and integrators within the PCIC, control the transmitter power-rise (key-up) and power-decay (de-key) characteristic to minimize splatter into adjacent channels.
U4502 is a temperature-sensing device, which monitors the circuit board temperature in the vicinity of the transmitter driver and final devices, and provides a dc voltage to the PCIC (TEMP, pin 29) proportional to temperature. If the dc voltage produced exceeds the set threshold in the PCIC, the transmitter output power is reduced so as to reduce the transmitter temperature.
2.6 Frequency SynthesisThe synthesizer subsystem consists of the reference oscillator (Y4261 or Y4262), the low voltage fractional-N synthesizer (LVFRAC-N, U4201), and the Voltage Controlled Oscillator VCO.
2.6.1 Reference Oscillator
The reference oscillator (Y4262) contains a temperature compensated crystal oscillator with a frequency of 16.8 MHz. An Analog-to-Digital (A/D) converter internal to U4201 (LVFRAC-N) and controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U4201, pin 25 to set the frequency of the oscillator. The output of the oscillator (pin 3 of Y4262) is applied to pin 23 (XTAL1) of U4201 via an RC series combination.
In applications where less frequency stability is required the oscillator inside U4201 is used along with an external crystal Y4261, varactor diode D4261, C4261, C4262 and R4262. In this case, Y4262, R4263, C4235 and C4251 are not used. When Y4262 is used, Y4261, D4261, C4261, C4262 and R4262 are not used, and C4263 is increased to 0.1 uF.
2.6.2 Fractional-N Synthesizer
The LVFRAC-N synthesizer IC (U4201) consists of a pre-scaler, a programmable loop divider, control divider logic, a phase detector, a charge pump, an A/D converter for low frequency digital modulation, a balanced attenuator to balance the high frequency analog modulation and low frequency digital modulation, a 13V positive voltage multiplier, a serial interface for control, and finally a super filter for the regulated 5 volts.
A voltage of 5V applied to the super filter input (U4201 pin 30) supplies an output voltage of 4.5 Vdc (VSF) at pin 28. It supplies the VCO, VCO modulation bias circuit (via R4322) and the synthesizer charge pump resistor network (R4251, R4252). The synthesizer supply voltage is provided by the 5V regulator U4211.
In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U5701-32), a voltage of 13 Vdc is being generated by the positive voltage multiplier circuitry (D4201, C4202, C4203). This voltage multiplier is basically a diode capacitor network driven by two signals (1.05MHz) 180 degrees out of phase (U4201-14 and -15).
Theory of Operation 2-23
Figure 2-9. UHF Synthesizer Block Diagram
Output LOCK (U4201-4) provides information about the lock status of the synthesizer loop. A high level at this output indicates a stable loop. IC U4201 provides the 16.8 MHz reference frequency at pin 19.
The serial interface (SRL) is connected to the µP via the data line DATA (U4201-7), clock line CLK (U4201-8), and chip enable line CSX (U4201-9).
2.6.3 Voltage Controlled Oscillator (VCO)
The Voltage Controlled Oscillator (VCO) consists of the VCO buffer IC (VCOBIC, U4301), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuits.
The VCOBIC together with Fractional-N synthesizer (U4201) generates the required frequencies in both transmit and receive modes. The TRB line (U4301 pin 19) determines which tank circuits and internal buffers are to be enabled. A high level on TRB enables TX tank and TX output (pin 10), and a low enables RX tank and RX output (pin 8). A sample of the signal from the enabled output is routed from U4301 pin 12 (PRESC_OUT), via a low pass filter, to pin 32 of U4201 (PREIN).
DATA
CLK
CEX
MODIN
VCC, DC5V
XTAL1
XTAL2
WARP
PREIN
VCP
REFERENCEOSCILLATOR
VOLTAGEMULTIPLIER
DATA (U0101 PIN 100)
CLOCK (U0101 PIN 1)
CSX (U0101 PIN 2)
MOD IN (U0221 PIN 40)
+5V (U4211 PIN 1)
7
8
9
10
13, 30
23
24
25
32
47
VMULT2 VMULT1
BIAS1
SFOUT
AUX3
AUX4
IADAPTIOUT
GND
FREFOUT
LOCK 4
19
6, 22, 33, 44
4345
3
2
28
14 15
40
FILTERED 5V
STEERING
LOCK (U0101 PIN 56)
PRESCALER IN
FREF (U0221 PIN 34)
39BIAS2
41
48
5, 20, 34, 36+5V (U4211 PIN 1)
AUX1
VDD, DC5V MODOUT
U4201 LOW VOLTAGEFRACTIONAL-NSYNTHESIZER
AUX2 1 (NU)
BWSELECT
VCO Bias
TRB
To IFSection
TX RF INJECTION(1ST STAGE OF PA)
LO RF INJECTION
VOLTAGE CONTROLLED OSCILLATOR
LINE2-POLELOOP
FILTER
2-24 Theory of Operation
A steering line voltage (VCTRL) between 3.0V and 10.0V at varactor diode CR4311 will tune the full TX frequency range (TXINJ) from 403 MHz to 470 MHz, and at varactor diodes CR4301, CR4302 and CR4303 will tune the full RX frequency range (RXINJ) from 358 MHz to 425 MHz. The tank circuits uses the Hartley configuration for wider bandwidth. For the RX tank circuit, an external transistor Q4301 is used in conjunction with the internal transistor for better side-band noise.
Figure 2-10. UHF VCO Block Diagram
The external RX buffers (Q4332) are enabled by a high at U4201 pin 3 (AUX4) via transistor switch Q4333. In TX mode the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U4201 pin41) is applied to the modulation circuits CR4321, R4321, R4322 and C4324. These modulate the TX VCO frequency via coupling capacitor C4321. Varactor CR4321 is biased for linearity from the VSF.
Presc
RX
TX
MatchingNetwork Low Pass
Filter
Attenuator
Pin8
Pin14
Pin10
(U4201 Pin28)
VCC Buffers
TX RF Injection
U4201 Pin 32
AUX3 (U4201 Pin2)
Prescaler Out
Pin 12Pin 19Pin 20
TX/RX/BSSwitching Network
U4301VCOBIC
RxActive Bias
TxActive Bias
Pin2
Rx-I adjust
Pin1
Tx-I adjust
Pins 9,11,17Pin18
VsensCircuit
Pin15
Pin16
RX VCO Circuit
TX VCO Circuit
RX Tank
TX Tank
Pin7
Vcc-Superfilter
Collector/RF in
Pin4
Pin5
Pin6
RX
TX
(U4201 Pin28)
Rx-SW
Tx-SW
Vcc-Logic
(U4201 Pin28)
Steer Line Voltage (VCTRL)
Pin13
Pin3
TRB IN
LO RF INJECTION
Q4301
Q4332
Theory of Operation 2-25
2.6.4 Synthesizer Operation
The complete synthesizer subsystem comprises mainly of a low voltage FRAC-N (LVFRACN) IC, Reference Oscillator (crystal oscillator with temperature compensation), charge pump circuits, loop filter circuits, and dc supply. The output signal (PRESC_OUT) of the VCOBIC (U4301, pin12) is fed to of U4201, pin 32 (PREIN) via a low pass filter (C4229,L4225,C4226) which attenuates harmonics and provides correct level to close the synthesizer loop.
The pre-scaler in the synthesizer (U4201) is basically a dual modulus pre-scaler with selectable divider ratios. The divider ratio of the pre-scaler is controlled by the loop divider, which in turn receives its inputs via the SRL. The output of the pre-scaler is applied to the loop divider. The output of the loop divider is connected to the phase detector, which compares the loop divider´s output signal with the reference signal.The reference signal is generated by dividing down the signal of the reference oscillator (Y4261 or Y4262).
The output signal of the phase detector is a pulsed dc signal which is routed to the charge pump. The charge pump outputs a current at pin 43 of U4201 (IOUT). The loop filter (which consists of R4221-R4223, C4221-C4225,L4221) transforms this current into a voltage that is applied to the varactor diodes CR4311 for transmit, CR4301, CR4302 & CR4303 for receive and alters the output frequency of the VCO.The current can be set to a value fixed in the LVFRAC-N IC or to a value determined by the currents flowing into BIAS 1 (U4201-40) or BIAS 2 (U4201-39). The currents are set by the value of R4251 or R4252 respectively. The selection of the three different bias sources is done by software programming.
To reduce synthesizer lock time when new frequency data has been loaded into the synthesizer the magnitude of the loop current is increased by enabling the IADAPT (U4201-45) for a certain software programmable time (Adapt Mode). The adapt mode timer is started by a low to high transient of the CSX line. When the synthesizer is within the lock range the current is determined only by the resistors connected to BIAS 1, BIAS 2, or the internal current source. A settled synthesizer loop is indicated by a high level of signal LOCK (U4201-4).
LOCK (U4201-4) signal is routed to one of the µP´s ADCs input U101-56. From the voltage the µP determines whether LOCK is active.
In order to modulate the PLL the two spot modulation method is utilized Via pin 10 (MODIN) on U4201. The audio signal is applied to both the A/D converter (low frequency path) as well as the balanced attenuator (high frequency path). The A/D converter converts the low frequency analog modulating signal into a digital code which is applied to the loop divider, thereby causing the carrier to deviate. The balance attenuator is used to adjust the VCO’s deviation sensitivity to high frequency modulating signals. The output of the balance attenuator is present at the MODOUT port (U4201-41) and connected to the VCO modulation diode CR4321 via R4321, C4325.
2-26 Theory of Operation
2.7 VHF (136-174MHz) Receiver Front-EndThe receiver is able to cover the VHF range from 136 to 174 MHz. It consists of four major blocks: front-end bandpass filters and pre-amplifier, first mixer, 1st IF, 2nd IF, and receiver back-end. Two varactor-tuned bandpass filters perform antenna signal pre-selection. A cross over quad diode mixer converts the signal to the first IF of 44.85 MHz. High-side injection is used.
Figure 2-11. VHF Receiver Block Diagram
There are two 2-pole 44.85 MHz crystal filters in the 1st IF section and 2 pairs of 455 kHz ceramic filters in the 2nd IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25kHz channel spacing is selected via control line BWSELECT. The second IF at 455 kHz is mixed, amplified and demodulated in the IF IC. The processing of the demodulated audio signal is performed by an audio processing IC located in the controller section.
Demodulator
1. Crystal Filter
MixerVaractor Tuned FilterRF AmpVaractor
Tuned Filter
Pin Diode Antenna SwitchRF Jack
Control Voltagefrom PCIC First LO
from FGU
Recovered Audio
RSSI
IF
Second LO
2. Crystal Filter
455kHz Filter(25kHz)
455kHz Filter(25kHz)
455kHz Filter(12.5kHz)
455kHz Filter(12.5kHz)
Sw
itch
Sw
itch
Sw
itch
Sw
itch
Limiter
1. IF Amp
2. IF Amp
Filter Bank Selectionfrom Synthesizer IC
Theory of Operation 2-27
2.7.1 Front-End Band-Pass Filters and Pre-Amplifier
The received signal from the radio’s antenna connector is first routed through the harmonic filter and antenna switch, which are part of the RF power amplifier circuits, before being applied to the receiver pre-selector filter (C3001, C3002, D3001 and associated components). The 2-pole pre-selector filter tuned by the dual varactor diode D3001 pre-selects the incoming signal (RXIN) from the antenna switch to reduce spurious effects to following stages. The tuning voltage (FECTRL_1) ranging from 2 volts to 8 volts is controlled by pin 20 of PCIC (U3501) in the Transmitter section. A dual hot carrier diode (D3003) limits any inband signal to 0 dBm to prevent damage to the pre-amplifier.
The RF pre-amplifier is a surface mount device (SMD) Q3001 with collector-base feedback to stabilize gain, impedance, and intermodulation. Transistor Q3002 compares the voltage drop across resistor R3002 with a fixed base voltage from divider R3011, R3000 and R3012, and adjusts the base current of Q3001 as necessary to maintain its collector current constant at approximately 15-20 mA. Operating voltage is from the regulated 9.3V supply (9V3). During transmit, 9.1 volts (K9V1) turns off both transistors Q3002 and Q3001. This protects the RF pre-amplifier from excessive dissipation during transmit mode. A following 3dB pad (R3006 – R3008 and R3016 – R3018) stabilizes the output impedance and intermodulation performance.
A second 2-pole varactor tuned bandpass filter provides additional filtering of the amplified signal. The dual varactor diode D3004 is controlled by the same signal FECTRL_1, which controls the pre-selector filter.
2.7.2 First Mixer and 1st Intermediate Frequency (IF)
The signal coming from the front-end is converted to the 1st IF frequency of 44.85 MHz using a cross over quad diode mixer (D3031). Its ports are matched for incoming RF signal conversion to the 44.85 MHz IF using high side injection. The high-side injection signal (RXINJ) from the frequency synthesizer circuit has a level of approximately +13 dBm and is injected via matching transformer T3002.
The IF output signal (IF) from transformer T3001 pin 2 is fed to the first 2- pole crystal filter FL3101. The filter output in turn is matched to IF amplifier Q3101 which is actively biased by a collector base feedback (R3101, R3106) to a current drain of approximately 5 mA drawn from the 5 volt supply. Its output impedance is matched to the second 2-pole crystal filter FL3102. The signal is further amplified by a preamplifier (Q3102) before going into pin 1 of IFIC (U3101).
A dual hot carrier diode (D3101) limits the filter output voltage swing to reduce overdrive effects at RF input levels above -27 dBm.
2.7.3 2nd Intermediate Frequency (IF) and Receiver Back-End
The 44.85 MHz 1st IF signal from the second IF amplifier feeds the IF IC (U3101) at pin1. Within the IF IC, the 44.85 MHz high IF signal mixes with the 44.395 MHz second local oscillator (2nd LO) to produce the 2nd IF signal at 455 kHz. The 2nd LO frequency is determined by crystal Y3101. The 2nd IF signal is amplified and filtered by an external pair of 455 kHz ceramic filters FL3112, FL3114 for 20/25 kHz channel spacing or FL3111, FL3113/F3115 for 12.5 kHz channel spacing. These pairs are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14).
The IF IC contains a quadrature detector using a ceramic phase-shift element (Y3102) to provide audio detection. Internal amplification provides an audio output level of 120 mV rms (at 60% deviation) from U3101 pin 8 (DISCAUDIO) which is fed to the ASFIC_CMP (U0221) pin 2 (part of the Controller circuits).
A received signal strength indicator (RSSI) signal is available at U3101, pin 5, having a dynamic range of 70 dB. The RSSI signal is interpreted by the µP (U0101, pin 63) and in addition is available at accessory connector J0501-15.
2-28 Theory of Operation
2.8 Transmitter Power Amplifier (PA) 45 WThe radio’s 45 W PA is a four-stage amplifier used to amplify the output from the VCOBIC to the radio transmit level. The line-up consists of three stages which utilize LDMOS and VMOS technology, followed by a final stage using a bipolar device. The gain of the first stage (U3401) is adjustable, controlled by pin 4 of PCIC (U3501) via Q3501 and Q3502 (VCONT). It is followed by an LDMOS pre-driver stage (Q3421), a VMOS driver stage (Q3431) and a bipolar final stage (Q3441).
Figure 2-12. VHF Transmitter Block Diagram
Devices U3401 and Q3421 are surface mounted. The remaining devices are directly attached to the heat sink.
2.8.1 Power Controlled Stage
The first stage (U3401) is a 20 dB gain integrated circuit containing two LDMOS FET amplifier stages. It amplifies the RF signal from the VCO (TXINJ). The output power of stage U3401 is controlled by a dc voltage applied to pin 1 from the power control circuit (U3501 pin 4, with transistors Q3501 and Q3502 providing current gain and level-shifting). The control voltage simultaneously varies the bias of two FET stages within U3401. This biasing point determines the overall gain of U3401 and therefore its output drive level to Q3421, which in turn controls the output power of the PA.
In receive mode the voltage control line is at ground level and turns off Q3501-2, which in turn switches off the biasing voltage to U3401.
2.8.2 Pre-Driver Stage
The next stage is an LDMOS device (Q3421) providing a gain of +13 dB. This device requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line PCIC_MOSBIAS_1 is set during transmit mode by the PCIC pin 24, and fed to the gate of Q3421 via the resistive network R3410, R3415, and R3416. The bias voltage is factory tuned.
PCIC
Pin Diode Antenna Switch RF Jack
Antenna
Harmonic Filter
PowerSense
PA-FinalStage
PADriver
From VCO
ControlledStage
Vcontrol
Bias 1
Bias 2
To Microprocessor
TemperatureSense
SPI BUS
ASFIC_CMP
PAPWRSET
To Microprocessor
Theory of Operation 2-29
2.8.3 Driver Stage
The following stage is an enhancement-mode N-Channel MOSFET device (Q3431) providing a gain of 10 dB. This device also requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line MOSBIAS_2 is set in transmit mode by the ASFIC and fed to the gate of Q3431 via the resistive network R3404, R3406, and R3431-5. This bias voltage is also tuned in the factory. If the transistor is replaced, the bias voltage must be tuned using the Customer Programming Software (CPS). Care must be taken not to damage the device by exceeding the maximum allowed bias voltage. The device’s drain current is drawn directly from the radio’s dc supply voltage input, PASUPVLTG, via L3431 and L3432.
2.8.4 Final Stage
The final stage uses bipolar device Q3441. The device’s collector current is also drawn from the radio’s dc supply voltage input. To maintain class C operation, the base is dc-grounded by a series inductor (L3441) and a bead (L3442). A matching network consisting of C3446-52, C3467, L3444-5, and two striplines, transforms the impedance to approximately 50 ohms and feeds the directional coupler.
2.8.5 Directional Coupler
The directional coupler is a microstrip printed circuit, which couples a small amount of the forward and reflected power delivered by Q3441. The coupled signals are rectified by D3451-2 and combined by R3463-4. The resulting dc voltage is proportional to RF output power and feeds the RFIN port of the PCIC (U3501, pin 1). The PCIC controls the gain of stage U3401 as necessary to hold this voltage constant, thus ensuring the forward power out of the radio to be held to a constant value.
An abnormally high reflected power level, such as may be caused by a damaged antenna, also causes the dc voltage applied to the PCIC to increase, and this will cause a reduction in the gain of U3401, reducing transmitter output power to prevent damage to the final device due to an improper load.
2.8.6 Antenna Switch
The antenna switch consists of two PIN diodes, D3471 and D3472. In the receive mode, both diodes are off. Signals applied at the antenna jack J3401 are routed, via the harmonic filter, through network L3472, C3474 and C3475, to the receiver input. In the transmit mode, the keyed 9 volts turns on Q3471 which enables current sink Q3472, set to 96 mA by R3473 and VR3471. This completes a dc path from PASUPVLTG, through L3473, D3471, L3477, L3472, D3472, L3471, R3474 and the current sink, to ground. Both diodes are forward biased into conduction. The transmitter RF from the directional coupler is routed via D3471 to the harmonic filter and antenna jack. D3472 also conducts, shunting RF power and preventing it from reaching the receiver port (RXIN). L3472 is selected to appear as a broadband guarter-wave transmission line, making the short circuit presented by D3472 appear as an open circuit at the junction of D3472 and the receiver path.
2.8.7 Harmonic Filter
Components L3491-L3494 and C3490-C3498 form a nine-pole Chebychev low-pass filter to attenuate harmonic energy of the transmitter. R3490 is used to drain electrostatic charge that might otherwise build up on the antenna. The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits, improving spurious response rejection.
2-30 Theory of Operation
2.8.8 Power Control
The transmitter uses the power control IC (PCIC, U3501) to control the power output of the radio. A portion of the forward and reflected RF power from the transmitter is sampled by the directional coupler, rectified and summed, to provide a dc voltage to the RFIN port of the PCIC (pin 1) which is proportional to the sampled RF power.
The ASFIC contains a digital to analog converter (DAC) which provides a reference voltage of the control loop to the PCIC via R3517. The reference voltage level is programmable through the SPI line of the PCIC. This reference voltage is proportional to the desired power setting of the transmitter, and is factory programmed at several points across the frequency range of the transmitter to offset frequency response variations of the transmitter’s power detector circuit.
The PCIC provides a dc output voltage at pin 4 (INT) which is amplified and shifted in dc level by stages Q3501 and Q3502. The 0 to 4 Vdc range at U1503, pin 4 is translated to a 0 to 8.5 Vdc range at the output of Q3501, and applied as VCONT to the power-adjust input pin of the first transmitter stage U3401. This adjusts the transmitter power output to the intended value. Variations in forward or reflected transmitter power cause the dc voltage at pin 1 to change, and the PCIC adjusts the control voltage above or below its nominal value to raise or lower output power.
Capacitors C3502-4, in conjunction with resistors and integrators within the PCIC, control the transmitter power-rise (key-up) and power-decay (de-key) characteristic to minimize splatter into adjacent channels.
U3502 is a temperature-sensing device, which monitors the circuit board temperature in the vicinity of the transmitter driver and final devices, and provides a dc voltage to the PCIC (TEMP, pin 29) proportional to temperature. If the dc voltage produced exceeds the set threshold in the PCIC, the transmitter output power is reduced so as to reduce the transmitter temperature.
2.9 Frequency SynthesisThe frequency synthesizer subsystem consists of the reference oscillator (Y3261 or Y3262), the Low Voltage Fractional-N synthesizer (LVFRAC-N, U3201), and the voltage-controlled oscillators and buffer amplifiers (U3301, Q3301-2 and associated circuits).
2.9.1 Reference Oscillator
The reference oscillator (Y3262) contains a temperature compensated crystal oscillator with a frequency of 16.8 MHz. An analog-to-digital (A/D) converter internal to U3201 (LVFRAC-N) and controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U3201 (pin 25) to set the frequency of the oscillator. The output of the oscillator (U3262 pin 3) is applied to pin 23 (XTAL1) of U3201 via R3263 and C3235.
In applications were less frequency stability is required, the oscillator inside U3201 is used along with an external crystal Y3261, varactor diode D3261, C3261, C3262 and R3262. In this case, Y3262, R3263, C3235 and C3251 are not used. When Y3262 is used, Y3261, D3261, C3261, C3262 and R3262 are not used, and C3263 is increased to 0.1 uF.
2.9.2 Fractional-N Synthesizer
The LVFRAC-N synthesizer IC (U3201) consists of a pre-scaler, a programmable loop divider, control divider logic, a phase detector, a charge pump, an A/D converter for low frequency digital modulation, a balance attenuator to balance the high frequency analog modulation and low frequency digital modulation, a 13 volt positive voltage multiplier, a serial interface for control, and finally a super filter for the regulated 5 volts.
Theory of Operation 2-31
Figure 2-13. VHF Synthesizer Block Diagram
A voltage of 5V applied to the super filter input (U3201 pin 30) supplies an output voltage of 4.5 Vdc (VSF) at pin 28. It supplies the VCO, VCO modulation bias circuit (via R3363) and the synthesizer charge pump resistor network (R3251, R3252). The synthesizer supply voltage is provided by the 5V regulator U3211.
In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U3201-47), a voltage of 13 Vdc is being generated by the positive voltage multiplier circuits (D3201, C3202, C3203). This voltage multiplier is basically a diode capacitor network driven by two signals (1.05MHz) 180 degrees out of phase signals (U3201-14 and -15).
Output LOCK (U3201-4) provides information about the lock status of the synthesizer loop. A high level at this output indicates a stable loop. IC U3201 provides the 16.8 MHz reference frequency at pin 19.
The serial interface (SRL) is connected to the µP via the data line DATA (U3201-7), clock line CLK (U3201-8), and chip enable line CSX (U3201-9).
DATA
CLK
CEX
MODIN
VCC, DC5V
XTAL1
XTAL2
WARP
PREIN
VCP
REFERENCEOSCILLATOR
VOLTAGEMULTIPLIER
DATA (U0101 PIN 100)
CLOCK (U0101 PIN 1)
CSX (U0101 PIN 2)
MOD IN (U0221 PIN 40)
+5V (U3211 PIN 1)
7
8
9
10
13, 30
23
24
25
32
47
VMULT2 VMULT1
BIAS1
SFOUT
AUX3
AUX4
IADAPTIOUT
GND
FREFOUT
LOCK 4
19
6, 22, 33, 44
4345
3
2
28
14 15
40
FILTERED 5V
STEERING
LOCK (U0101 PIN 56)
PRESCALER IN
FREF (U0221 PIN 34)
39BIAS2
41
48
5, 20, 34, 36+5V (U3211 PIN 1)
AUX1
VDD, DC5V MODOUT
U3201 LOW VOLTAGEFRACTIONAL-NSYNTHESIZER
AUX2
TRB
TX RF INJECTION(1ST STAGE OF PA)
LO RF INJECTION
VOLTAGE CONTROLLED OSCILLATOR
LINE2-POLELOOP
FILTER
1
2-32 Theory of Operation
2.9.3 Voltage Controlled Oscillator (VCO)
The Voltage Controlled Oscillator (VCO) consists of the VCO/Buffer IC (VCOBIC, U3301), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuits.
Figure 2-14. VHF VCO Block Diagram
The VCOBIC together with the Fractional-N synthesizer (U3201) generates the required frequencies in both the transmit and receive modes. The TRB line (U3301, pin 19) determines which tank circuits and internal buffers are to be enabled. A high level on TRB enables the TX tank and TX output (pin 10), and a low enables the RX tank and RX output (pin 8). A sample of the signal from the enabled RF output is routed from U3301, pin 12 (PRESC_OUT), via a low pass filter, to U3201, pin 32 (PREIN).
A steering line voltage (VCTRL) between 2.5 volts and 11 volts at varactor diode D3361 tune the full TX frequency range (TXINJ) from 136 MHz to 174 MHz, and varactor diode D3341 tunes the full RX frequency range (RXINJ) from 181 MHz to 219 MHz. The RX tank circuit uses a Hartley configuration for wider bandwidth. For the RX tank circuit, an external transistor Q3304 is used for better side-band noise.
Presc
RX
TX
MatchingNetwork Low Pass
Filter
Attenuator
Pin8
Pin14
Pin10
(U3211 Pin1)
VCC Buffers
TX RF Injection
U3201 Pin 32
AUX3 (U3201 Pin2)
Prescaler Out
Pin 12Pin 19Pin 20
TX/RX/BSSwitching Network
U3301VCOBIC
RxActive Bias
TxActive Bias
Pin2
Rx-I adjust
Pin1
Tx-I adjust
Pins 9,11,17Pin18
VsensCircuit
Pin15
Pin16
RX VCO Circuit
TX VCO Circuit
RX Tank
TX Tank
Pin7
Vcc-Superfilter
Collector/RF in
Pin4
Pin5
Pin6
RX
TX
(U3201 Pin28)
Rx-SW
Tx-SW
Vcc-Logic
(U3211 Pin1)
Steer Line Voltage (VCTRL)
Pin13
Pin3
TRB IN
LO RF INJECTION
Q3304
Q3301
Theory of Operation 2-33
The external RX buffers (Q3301 and Q3302) are enabled by a high at U3301, pin 7 (RX_SWITCH) via transistor switch Q3303. In the TX mode, the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U3201 pin 41) is applied to varactor diode D3362, which modulates the TX VCO frequency via capacitor C3362. Varactor D3362 is biased for linearity from the VSF.
2.9.4 Synthesizer Operation
The complete synthesizer subsystem consists of the low voltage FRAC-N (LVFRACN), reference oscillator (a crystal oscillator with temperature compensation), charge pump circuit, loop filter circuit and a dc supply. The output signal PRESC from the VCOBIC (U3301 pin 12) is fed to U3201 pin 32 (PREIN) via a low pass filter (C3318, L3318 and C3226) which attenuates harmonics and provides the correct level to close the synthesizer loop.
The pre-scaler in the synthesizer (U3201) is a dual modulus type with selectable divider ratios. The divider ratio of the pre-scaler is controlled by the loop divider, which in turn receives its inputs via the SRL. The output of the pre-scaler is applied to the loop divider. The output of the loop divider is connected to the phase detector, which compares the loop divider´s output signal with the reference signal. The reference signal is generated by dividing down the signal of reference oscillator Y3261 or Y3262.
The output signal of the phase detector is a pulsed dc signal which is routed to the charge pump. The charge pump outputs a current at U3201 pin 43 (IOUT). The loop filter (which consists of R3221-R3223 and C3221-C3224) transforms this current into a voltage that is applied to the varactor diodes (D3361 for transmit, D3341 for receive) to alter the output frequency of the appropriate VCO. The current can be set to a value fixed within the LVFRAC-N IC, or to a value determined by the currents flowing into BIAS 1 (U3201-40) or BIAS 2 (U3201-39). The currents are set by the value of R3251 and R3252 respectively. The selection of the three different bias sources is done by software programming.
To reduce synthesizer lock time when new frequency data has been loaded into the synthesizer, the magnitude of the loop current is increased by enabling the IADAPT pin (U3201-45) for a certain software programmable time (adapt mode). The adapt mode timer is started by a low to high transient of the CSX line. When the synthesizer is within the lock range, the current is determined only by the resistors connected to BIAS 1 and BIAS 2, or by the internal current source. A settled synthesizer loop is indicated by a high level signal at U3201-4 (LOCK).
The LOCK signal is routed to one of the µP´s ADC inputs (U0101-56). From the measured voltage, the µP determines whether LOCK is active.
To modulate the PLL, the two spot modulation method is utilized. Via U3201, pin 10 (MODIN), the audio signal is applied to both the A/D converter (low frequency path) as well as the balance attenuator (high frequency path). The A/D converter changes the low frequency analog modulating signal into a digital code that is applied to the loop divider, thereby causing the carrier to deviate. The balance attenuator is used to adjust the VCO’s deviation sensitivity to high frequency modulating signals. The output of the balance attenuator is present at the MODOUT port (U3201-41) and connected to the VCO modulation diode D3362 via R3364.
2-34 Theory of Operation
2.10 Control Head (PRO3100, CDM750)ThE Control Head Contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio and several indicator Light Emitting Diodes (LED) to inform the user about the radio status. To control the LED’s and to communicate with the host radio the control head uses the Motorola 68HC11E9 µP.
2.10.1 Power Supplies
The power supply to the control head is taken from the host radio’s FLT A+ voltage via connector J0801, pin 3 and the regulated +5V via connector J0801 pin 7. The voltage FLT A+ is at battery level and is used for the LED’s, the back light and to power up the radio via on / off / volume knob. The stabilized +5 volt is used for µP and the keypad buttons. The voltage USW 5V derived from the FLT A+ voltage and stabilized by the series combination of R0822, VR0822 is used to buffer the internal RAM of the µP (U0831). C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Dual diode D0822 prevents radio circuits from discharging this capacitor. When the supply voltage is applied to the radio, C0822 is charged via R0822 and D0822. To avoid the µP entering the wrong mode if the radio is switched on while the voltage across C0822 is still too low, the regulated 5 volt supply charges C0822 via diode D0822.
2.10.2 Power On/Off
The on/off/Volume knob, when pressed, switches the radio’s voltage regulators on by connecting line ON OFF CONTROL to line UNSW 5V via D0821. Additionally, 5 volts at the base of digital transistor Q0822 informs the control head’s µP about the pressed knob. The µP asserts pin 62 and line CH REQUEST low to hold the line ON OFF CONTROL at 5 volts via Q0823 and D0821. The high line ON OFF CONTROL also informs the host radio that the control head’s µP wants to send data via the SBEP bus. When the radio returns a data request message, the µP informs the radio about the pressed knob. If the radio is switched off, the radio’s µP switches it on and vice versa. If the on/off/volume knob is pressed while the radio is on, the software detects a low state on line ON OFF SENSE, the radio is alerted via line ON OFF CONTROL and sends a data request message. The control head µP informs the radio about the pressed knob and the radio’s µP switches the radio off.
2.10.3 Microprocessor Circuit
The control head uses the Motorola 68HC11E9 microprocessor (µP) (U0831) to control the LED’s and to communicate with the host radio. RAM and ROM are contained within the µP.
The µP generates it’s clock using the oscillator inside the µP along with a 8 MHz ceramic resonator (U0833) and R0920.
The µP’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5V at uP, pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822. Capacitor C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0822 prevents radio circuits from discharging this capacitor.
There are eight analog-to-digital converter ports (A/D) on the uP. They are labeled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5 volts of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action.
The Pin VRH Pin is the high reference voltage for the A/D ports on the uP. If this voltage is lower than +5V the A/D reading is incorrect. The VRL signal is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings could be incorrect.
Theory of Operation 2-35
The µP determines the used keypad type and the control head ID by reading the levels at ports PC0 – PC7. Connections JU0852/3/4 are provided by the individual keypads.
The MODB / MODA input of the µP must be at a logic 1 to start executing correctly. The XIRQ and the IRQ pins should also be at a logic 1.
Voltage sense device U0832 provides a reset output that goes to 0 volts if the regulated 5 volts goes below 4.5 volts. This is used to reset the controller to prevent improper operation.
2.10.4 SBEP Serial Interface
The host radio (master) communicates to the control head µP (slave) through its SBEP bus. This bus uses only line BUS+ for data transfer. The line is bi-directional meaning that either the radio or the control head µP can drive the line. The µP sends serial data via pin 50 and D0831 and it reads serial data via pin 47. Whenever the µP detects activity on the BUS+ line, it starts communication.
When the host radio needs to communicate to the control head uP, it sends data via line BUS+. Any transition on this line generates an interrupt and the µP starts communication. The host radio may send data like LED and back light status or it may request the control head ID or the keypad ID.
When the control head µP wants to communicate to the host radio, the uP brings the request line CH REQUEST to a logic 0 via µP pin 62. This switches on Q0823, which pulls line ON OFF CONTROL high through diode D0821. A low to high transition on this line informs the radio, that the control head requires service. The host radio then sends a data request message via BUS+ and the control head uP replies with the data it wanted to send. This data can be information like which key has been pressed or that the volume knob has been rotated.
The control head uP monitors all messages sent via BUS+, but ignores any data communication between the host radio and CPS or universal tuner.
2.10.5 Keypad Keys
The control head keypad is a 6-key design. All keys are configured as two analog lines read by µP pins 13 and 15. The voltage on the analog lines varies between 0 volts and +5 volts depending on which key has been pressed. If no key is pressed, the voltage at both lines is 5 volts. The key configuration can be thought of as a matrix, where the two lines represent one row and one column. Each line is connected to a resistive divider powered by +5 volts. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby reduce the voltages on the analog lines The voltages of the lines are A/D converted inside the µP (ports PE 0 - 1) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered.
An additional pair of analog lines and A/D µP ports (PE 3 – 2) are available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed the same way as a key press on a control head.
2.10.6 Status LED and Back Light Circuit
All indicator LED’s (red, yellow, green) are driven by current sources. To change the LED status the host radio sends a data message via SBEP bus to the control head µP. The control head µP determines the LED status from the received message and switches the LED’s on or off via port PB 7 – 0 and port PA4. The LED status is stored in the µP’s memory. The LED current is determined by the resistor at the emitter of the respective current source transistor.
The back light for the keypad is controlled by the host radio the same way as the indicator LED’s using uP port PA 5. The µP can switch the back light on and off under software control. The keypad back light current is drawn from the FLT A+ source and controlled by 2 current sources. The LED current is determined by the resistor at the emitter of the respective current source transistor.
2-36 Theory of Operation
2.10.7 Microphone Connector Signals
Signals BUS+, PTT IRDEC, HOOK, MIC, HANDSET AUDIO, FLT A+, +5V, and two A/D converter inputs are available at the microphone connector J0811. Signal BUS+ (J0811-7) connects to the SBEP bus for communication with the CPS or the Universal Tuner. Line MIC (J0811-5) feeds the audio from the microphone to the radio’s controller via connector J0801-4. The Line HANDSET AUDIO (J0811-8) feeds the receiver audio from the controller (J0801-6) to a connected handset. FLT A+, which is at supply voltage level, and +5V are used to supply any connected accessory like a microphone or a handset.
The two A/D converter inputs (J0811-9/10) are used for a microphone with keypad. A pressed key changes the dc voltage on both lines. The voltages depend on which key is pressed. The µP determines from the voltage on these lines which key is pressed and sends the information to the host radio.
Line PTT IRDEC (J0811-6) is used to key µP the radio’s transmitter. While the PTT button on a connected microphone is released, line PTT IRDEC is pulled to +5 volts level by R0843. Transistor Q0843 is switched on and causes a low at µP port PA2. When the PTT button is pressed, signal PTT IRDEC is pulled to ground level. This switches off Q0843 and the resulting high level at µP port PA2 informs the µP about the pressed PTT button. The µP informs the host radio about any status change on the PTT IRDEC line via SBEP bus.
When line PTT IRDEC is connected to FLT A+ level, transistor Q0821 is switched on through diode VR0821 and thereby pulls the level on line ON OFF CONTROL to FLT A+ level. This switches on the radio and puts the radio’s µP in bootstrap mode. Bootstrap mode loads the firmware into the radio’s flash memory.
The HOOK input (J0811-3) informs the µP when the microphone´s hang-up switch is engaged. Depending on the CPS programming, the µP may take actions like turning the audio PA on or off. While the hang µp switch is open, the line HOOK is pulled to +5 volts level by R0841. Transistor Q0841 is switched on and causes a low at µp port PA1. When the HOOK switch is closed, the HOOK signal is pulled to ground level. This switches off R0841and the resulting high level at µp port PA1 informs the µp about the closed hang µp switch. The µp informs the host radio about any status change on the HOOK line via SBEP bus.
2.10.8 Speaker
The control head contains a speaker for the receiver audio. The receiver audio signal from the differential audio output of the audio amplifier located on the radio’s controller, is fed via connector J0801-10, 11 to the speaker connector P0801, pins 1 and 2. The speaker is connected to the speaker connector P0801. The control head speaker can be disconnected only if an external speaker, connected on the accessory connector, is used.
2.10.9 Electrostatic Transient Protection
Electrostatic transient protection is provided for the sensitive components in the control head by diodes VR0811 VR00812 VR0816 - VR0817. The diodes limit any transient voltages. The associated capacitors provide radio frequency interference (RFI) protection.
Theory of Operation 2-37
2.11 Control Head (PRO5100, PRO7100, CDM1250, CDM1550)The control head contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator light emitting diodes (LEDs) to inform the user about the radio status, and a 14 character liquid crystal display (LCD) for alpha - numerical information, e.g. channel number or call address name. To control the LED’s and the LCD, and to communicate with the host radio the control head uses the Motorola 68HC11E9 µP.
2.11.1 Power Supplies
The power supply to the control head is taken from the host radio’s FLT A+ voltage via connector J0801 pin 3 and the regulated +5V via connector J0801 pin 7. The voltage FLT A+ is at battery level and is used for the LED’s, the back light and to power up the radio via on / off / volume knob. The stabilized +5 volt is used for the µP, display, display driver, and keypad buttons. The voltage USW 5V derived from the FLT A+ voltage and stabilized by the series combination of R0822, VR0822 is used to buffer the internal RAM of the µP (U0831). C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Dual diode D0822 prevents radio circuits from discharging this capacitor. When the supply voltage is applied to the radio, C0822 is charged via R0822 and D0822. To avoid that the µp enters the wrong mode when the radio is switched on while the voltage across C0822 is still too low, the regulated 5V charge C0822 via diode D0822.
2.11.2 Power On / Off
The on/off/volume knob when pressed switches the radio’s voltage regulators on by connecting line ON OFF CONTROL to line UNSW 5V via D0821. Additionally, 5 volts at the base of digital transistor Q0822 informs the control head’s µP about the pressed knob. The µP asserts pin 62 and line CH REQUEST low to hold line ON OFF CONTROL at 5 volts via Q0823 and D0821. The high line ON OFF CONTROL also informs the host radio, that the control head’s µP wants to send data via SBEP bus. When the radio returns a data request message, the µP informs the radio about the pressed knob. If the radio was switched off, the radio’s µp switches it on and vice versa. If the on/off/volume knob is pressed while the radio is on, the software detects a low state on line ON OFF SENSE, the radio is alerted via line ON OFF CONTROL and sends a data request message. The control head µp will inform the radio about the pressed knob and the radio’s µp switches the radio off.
2.11.3 Microprocessor Circuit
The control head uses the Motorola 68HC11E9 microprocessor (µp) (U0831) to control the LED’s and the LCD and to communicate with the host radio. RAM and ROM are contained within the µP itself.
The µP generates it’s clock using the oscillator inside the µP along with a 8 MHz ceramic resonator (U0833) and R0920.
The µP’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5 volts at µp, pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822. C0822 allows the battery voltage to be disconnected for a couple of seconds without losing RAM parameters. Diode D0822 prevents radio circuits from discharging this capacitor.
There are eight analog-to-digital converter ports (A/D) on the µp. They are labeled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action.
Pin VRH is the high reference voltage for the A/D ports on the µP. If this voltage is lower than +5V the A/D reading is incorrect. Likewise pin VRL is the low reference for the A/D ports. This line is normally tied to ground. If this line is not connected to ground, the A/D readings could be incorrect.
2-38 Theory of Operation
The µP determines the used keypad type and the control head ID by reading the levels at ports PC0 – PC7. Connections JU0852/3/4 are provided by the individual keypads.
The MODB / MODA input of the µP must be at a logic 1 for it to start executing correctly. The XIRQ and the IRQ pins should also be at a logic 1.
Voltage sense device U0832 provides a reset output that goes to 0 volts if the regulated 5 volts goes below 4.5 volts. This is used to reset the controller to prevent improper operation.
2.11.4 SBEP Serial Interface
The host radio (master) communicates to the control head µP (slave) through its SBEP bus. This bus uses only line BUS+ for data transfer. The line is bi-directional, meaning that either the radio or the control head µP can drive the line. The µP sends serial data via pin 50 and D0831 and it reads serial data via pin 47. Whenever the µP detects activity on the BUS+ line, it starts communication.
When the host radio needs to communicate to the control head µP, it sends data via line BUS+. Any transition on this line generates an interrupt and the µP starts communication. The host radio may send data like display information, LED and back light status or it may request the control head ID or the keypad ID.
When the control head µP wants to communicate to the host radio, the µP brings request line CH REQUEST to a logic 0 via µP, pin 62. This switches on Q0823, which pulls line ON OFF CONTROL high through diode D0821. A low to high transition on this line informs the radio, that the control head requires service. The host radio then sends a data request message via BUS+ and the control head µP replies with the data it wanted to send. This data can be information such as a key is pressed or the volume knob rotated.
The control head µP monitors all messages sent via BUS+, but ignores any data communication between host radio and CPS or Universal Tuner.
2.11.5 Keypad Keys
The control head keypad is a 6-key keypad (Model B) or a 10- key keypad (model C). All keys are configured as two analog lines read by µP, pins 13 and 15. The voltage on the analog lines varies between 0 volts and +5 volts depending on which key has been pressed. If no key is pressed, the voltage at both lines is 5 volts. The key configuration can be thought of as a matrix, where the two lines represent one row and one column. Each line is connected to a resistive divider powered by +5 volts. If a button is pressed, it will connect one specific resistor of each divider line to ground level and thereby reduce the voltages on the analog lines The voltages of the lines are A/D converted inside the µP (ports PE 0 - 1) and specify the pressed button. To determine which key is pressed, the voltage of both lines must be considered.
An additional pair of analog lines and A/D µP ports (PE 3 – 2) is available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed the same way as a key press on the control head.
2.11.6 Status LED and Back Light Circuit
All the indicator LED’s (red, yellow, green) are driven by current sources. To change the LED status the host radio sends a data message via SBEP bus to the control head µP. The control head µP determines the LED status from the received message and switches the LED’s on or off via port PB 7 – 0 and port PA4. The LED status is stored in the µP’s memory. The LED current is determined by the resistor at the emitter of the respective current source transistor.
The back light for the LCD and the keypad is controlled by the host radio the same way as the indicator LED’s using µP port PA 5. This port is a Pulse Width Modulator (PWM) output. The output signal charges capacitor C0843 through R0847. By changing the pulse width under software control, the dc voltage of C0843 and thereby, the brightness of the back light can be changed in four steps.
Theory of Operation 2-39
The keypad back light current is drawn from the FLT A+ source and controlled by transistor Q0933. The current flowing through the LED’s cause a proportional voltage drop across the parallel resistors R0947, R0948. This voltage drop is amplified by the op-amp U0931-2. U0931-2 and Q0934 form a differential amplifier. The voltage difference between the base of Q0934 and the output of U0931-2 determines the current from the base of the LED control transistor Q0933 and in turn the brightness of the LED’s. The µP controls the LED’s by changing the dc level at the base of Q0934. If the base of Q0934 is at ground level, Q0934 is switched off and no current flows through Q0933 and the LED’s. If the base voltage of Q0934 rises a current flows through Q0934 and in turn through Q0933 causing the LED’s to turn on and a rising voltage drop across R0947, R0948. The rising voltage causes the output of the op-amp to rise and to reduce the base to emitter voltage of Q0934. This decreases the current of Q0933 until the loop has settled.
2.11.7 Liquid Crystal Display (LCD)
The LCD H0971 uses the display driver U0971. The display is a single-layer super-twist pneumatic (STN) LCD display. It has 14 characters with a 5*8 dot matrix for displaying alpha - numerical information and a line with 21 pre - defined icons above the dot matrix
The driver contains a data interface to the µP, an LCD segment driver, an LCD power circuit, an oscillator, data RAM and control logic. At power up the driver’s control logic is reset by a logic 0 at input SR2 (U0971-15). The driver’s internal oscillator is set to about 20 kHz and can be measured at pin 22. The driver’s µP interface is configured to accept 8 bit parallel data input (U0971-D0-D7) from the control head µP (U0831 port PC0-PC7).
To write data to the driver’s RAM the µP sets chip select (U0971-20) to logic 0 via U0831-11, RD (U0971-18) to logic 1 via (U0831-10) and WR (U0971-17) to logic 0 via U0831-9. With input A0 (U0971-21) set to logic 0 via U0831-12 the µP writes control data to the driver. Control data includes the RAM start address for the following display data. With input A0 set to logic 1 the µP then writes the display data to the display RAM. When data transfer is complete the µP terminates the chip select, RD, and WD activities.
The display driver’s power circuit provides the voltage supply for the display. This circuit consists of a voltage multiplier, voltage regulator and a voltage follower. The external capacitors C0971 - C0973 configure the multiplier to double the supply voltage. In this configuration the multiplier output VOUT (U0971-8) supplies a voltage of -5V (2* -5V below VDD). The multiplied voltage VOUT is sent to the internal voltage regulator. To set the voltage level of the regulator output V5 (U0971-5) this voltage is divided by the resistors R0973 and R0974 and fed back to the reference input VR (U0971-6). In addition the regulator output voltage V5 can be controlled electronically by a control command sent to the driver. With the used configuration the voltage V5 is about –2V. The voltage V5 is resistively divided by the driver’s voltage follower to provide the voltages V1 - V4. These voltages are needed for driving the liquid crystals. The level of V5 can be measured by one of the µP’s analog-to-digital converters (U0831-20) via resistive divider R0975, R0976. To stabilize the display brightness over a large temperature range the µP measures the temperature via analog-to-digital converter (U0831-18) using temperature sensor U0834. Dependent on the measured temperature the µP adjusts the driver output voltage V5, and in turn the display brightness, via parallel interface.
2.11.8 Microphone Connector Signals
Signals BUS+, PTT IRDEC, HOOK, MIC, HANDSET AUDIO, FLT A+, +5V and 2 A/D converter inputs are available at the microphone connector J0811. Signal BUS+ (J0811-7) connects to the SBEP bus for communication with the CPS or the Universal Tuner. Line MIC (J0811-5) feeds the audio from the microphone to the radio’s controller via connector J0801-4. Line HANDSET AUDIO (J0811-8) feeds the receiver audio from the controller (J0801-6) to a connected handset. FLT A+, which is at supply voltage level, and +5V are used to supply any connected accessory like a microphone or a handset.
2-40 Theory of Operation
The two A/D converter inputs (J0811-9/10) are used as a microphone with keypad. A pressed key changes the dc voltage on both lines. The voltages depend on which key is pressed. The µP determines, from the voltage on these lines, which key is pressed and sends this information to the host radio.
Line PTT IRDEC (J0811-6) is used to key up the radio’s transmitter. While the PTT button on a connected microphone is released, line PTT IRDEC line is pulled to a +5 volts level by R0843. Transistor Q0843 is then switched on causing a low at µP port PA2. When the PTT button is pressed, signal PTT IRDEC is pulled to ground level. This switches off Q0843 and the resulting high level at µP port PA2 informs the µP about the pressed PTT button. The µP informs the host radio about any status change on the PTT IRDEC line via the SBEP bus.
When line PTT IRDEC is connected to FLT A+ level, transistor Q0821 is switched on through diode VR0821 pulling the level on the line ON OFF CONTROL to FLT A+ level. This switches on the radio and puts the radio’s µP in bootstrap mode. Bootstrap mode is used to load the firmware into the radio’s flash memory.
The HOOK input (J0811-3) is used to inform the µP when the microphone´s hang-up switch is engaged. Dependent on the CPS programming the µP may take actions like turning the audio PA on or off. While the hang up switch is open, line HOOK is pulled to +5 volts level by R0841. Transistor Q0841 is switched on causing a low at µP port PA1. When the HOOK switch is closed, signal HOOK is pulled to ground level. This switches off R0841 and the resulting high level at µP port PA1 informs the µP about the closed hang up switch. The µP informs the host radio about any status change on the HOOK line via SBEP bus.
2.11.9 Speaker
The control head contains a speaker for the receiver audio. The receiver audio signal from the differential audio output of the audio amplifier located on the radio’s controller is fed via connector J0801-10, -11 to the speaker connector P0801, pins 1 and 2. The speaker is connected to the speaker connector P0801. The control head speaker can only be disconnected if an external speaker, connected on the accessory connector, is used.
2.11.10Electrostatic Transient Protection
Electrostatic transient protection is provided for the sensitive components in the control head by diodes VR0811 VR00812 and VR0816 - VR0817. The diodes limit any transient voltages. The associated capacitors provide radio frequency interference (RFI) protection.
3-1
Chapter 3
Maintenance
3.1 IntroductionThis chapter of the manual describes:
n Preventive maintenance
n Safe handling of CMOS and LDMOS devices
n Repair procedures and techniques
3.2 Preventive MaintenanceThe radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended.
3.2.1 Inspection
Check that the external surfaces of the radio are clean, and that all external controls and switches are functional. It is not recommended to inspect the interior electronic circuitry.
3.2.2 Cleaning
The following procedures describe the recommended cleaning agents and the methods to be used when cleaning the external and internal surfaces of the radio. External surfaces include the front cover, housing assembly, and battery case. These surfaces should be cleaned whenever a periodic visual inspection reveals the presence of smudges, grease, and/or grime.
The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild dishwashing detergent in water. The only factory recommended liquid for cleaning the printed circuit boards and their components is isopropyl alcohol (70% by volume).
CAUTION: The effects of certain chemicals and their vapors can have harmful results on certain plas-tics. Aerosol sprays, tuner cleaners, and other chemicals should be avoided.
Cleaning External Plastic Surfaces
The detergent-water solution should be applied sparingly with a stiff, non-metallic, short-bristled brush to work all loose dirt away from the radio. A soft, absorbent, lintless cloth or tissue should be used to remove the solution and dry the radio. Make sure that no water remains entrapped near the connectors, cracks, or crevices.
Cleaning Internal Circuit Boards and Components
Isopropyl alcohol may be applied with a stiff, non-metallic, short-bristled brush to dislodge embedded or caked materials located in hard-to-reach areas. The brush stroke should direct the dislodged material out and away from the inside of the radio. Make sure that controls or tunable components are
NOTE Internal surfaces should be cleaned only when the radio is disassembled forservicing or repair.
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3-2 Maintenance
not soaked with alcohol. Do not use high-pressure air to hasten the drying process since this could cause the liquid to collect in unwanted places. Upon completion of the cleaning process, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl alcohol to the frame, front cover, or back cover.
3.3 Safe Handling of CMOS and LDMOSComplementary metal-oxide semiconductor (CMOS) devices are used in this family of radios. CMOS characteristics make them susceptible to damage by electrostatic or high voltage charges. Damage can be latent, resulting in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent device damage during disassembly, troubleshooting, and repair.
Handling precautions are mandatory for CMOS circuits and are especially important in low humidity conditions. DO NOT attempt to disassemble the radio without first referring to the CMOS CAUTION paragraph in the Disassembly and Reassembly section of the manual.
CAUTION: This radio contains static-sensitive devices. Do not open the radio unless you are properly grounded. Take the following precautions when working on this unit:
n Store and transport all CMOS devices in conductive material so that all exposed leads are shorted together. Do not insert CMOS devices into conventional plastic “snow” trays used for storage and transportation of other semiconductor devices.
n Ground the working surface of the service bench to protect the CMOS device. We recom-mend using the Motorola Static Protection Assembly (part number 0180386A82), which includes a wrist strap, two ground cords, a table mat, and a floor mat.
n Wear a conductive wrist strap in series with a 100k resistor to ground. (Replacement wrist straps that connect to the bench top covering are Motorola part number RSX-4015.)
n Do not wear nylon clothing while handling CMOS devices.
n Do not insert or remove CMOS devices with power applied. Check all power supplies used for testing CMOS devices to be certain that there are no voltage transients present.
n When straightening CMOS pins, provide ground straps for the apparatus used.
n When soldering, use a grounded soldering iron.
n If at all possible, handle CMOS devices by the package and not by the leads. Prior to touching the unit, touch an electrical ground to remove any static charge that you may have accumu-lated. The package and substrate may be electrically common. If so, the reaction of a dis-charge to the case would cause the same damage as touching the leads.
3.4 General Repair Procedures and TechniquesParts Replacement and Substitution
When damaged parts are replaced, identical parts should be used. If the identical replacement component is not locally available, check the parts list for the proper Motorola part number and order
the component from the nearest Motorola Communications parts center listed in the Piece Parts Availability section of this manual (See Chapter 1). You also need to review Motorola’s Rework and Repair Technical Reference manual, P/N 6880309G53, which can be ordered from AAD at 1-800-422-4210.
Rigid Circuit Boards
The family of radios uses bonded, multi-layer, printed circuit boards. Since the inner layers are not accessible, some special considerations are required when soldering and unsoldering components.
NOTE Always use a fresh supply of alcohol and a clean container to prevent contaminationby dissolved material (from previous usage).
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Maintenance 3-3
The printed-through holes may interconnect multiple layers of the printed circuit. Therefore, care should be exercised to avoid pulling the plated circuit out of the hole.
When soldering near the 20-pin and 40-pin connectors:
n Avoid accidentally getting solder in the connector.
n Be careful not to form solder bridges between the connector pins.
n Closely examine your work for shorts due to solder bridges.
n Do not exceed 210 degrees C when reworking boards.
n Do not exceed 5 degrees temperature ramp rate.
Flexible Circuits
The flexible circuits are made from a different material than the rigid boards and different techniques must be used when soldering. Excessive prolonged heat on the flexible circuit can damage the material. Avoid excessive heat and excessive bending.
For parts replacement, use the ST-1087 R1319A Temperature-Controlled Solder Station with a 600-700 degree tip for OMPAC (BGA) CSP, micro BGA and connectors. Use digital tweezers for all other component. Use small diameter solder such as ST-633. The smaller size solder will melt faster and require less heat to be applied to the circuit.
To replace a component on a flexible circuit:
1. Grasp the edge of the flexible circuit with seizers (hemostats) near the part to be removed.
2. Pull gently.
3. Apply the tip of the soldering iron to the component connections while pulling with the seizers.
Chip Components
Use either the RLN-4062 R1319A Chipmaster Hot-Air Repair Station or the Motorola 0180381B45 Repair Station R1364a digital heated tweezer system for chip component replacement. When using the 0180381B45 Repair Station, select the TJ-65 mini-thermojet hand piece. On either unit, adjust the temperature control to 700 degrees F. (370 degrees C), and adjust the airflow to a minimum setting. Airflow can vary due to component density.
To remove a chip component:
1. Use a hot-air hand piece and position the nozzle of hand piece R1319A approximately 1/8" (0.3 cm) above the component to be removed.
2. Begin applying the hot air. Once the solder reflows, remove the component using the pair of twee-zers contained in the SMD tool kit shipped with the R1319A.
3. Using a solder wick (Motorola P/N 6680334B25) and a soldering iron or a power desoldering sta-tion, remove the excess solder from the pads.
To replace a chip component using a soldering iron:
1. Select the appropriate micro-tipped soldering iron and apply fresh solder paste (Motorola P/N 6680333E72) to one of the solder pads.
2. Using a pair of tweezers, position the new chip component in place while heating the fresh solder.
3. Once solder wicks onto the new component, remove the heat from the solder.
4. Heat the remaining pad with the soldering iron and apply solder until it wicks to the component. If necessary, touch up the first side. All solder joints should be smooth and shiny.
NOTE Do not attempt to puddle out components. Prolonged application of heat may dam-age the flexible circuit.
3-4 Maintenance
To replace a chip component using hot air:
1. Use the hot-air hand piece and reflow the solder on the solder pads to smooth it. For components having two or three solder connections, apply a dot of NO-CLEAN solder paste to the lead joints before removal.
2. Apply a drop of solder paste flux to each pad. For dual leaded devices such as SOICs, TSOPs, and quad leaded devices less than 20 leads, such as PLCCs and QFPs, apply a bead of solder paste.
3. Using a pair of tweezers, position the new component in place. As component is removed, it will carry away excess solder, leaving the ideal amount on the pads for their surface area.
4. Position the hot-air hand piece approximately 1/8” (0.3 cm) above the component and begin applying heat. For an extensive discussion of chip component rework and other technical proce-dures, order manual 6880309G53 from Motorola AAD.
5. Once the solder wicks to the component, remove the heat and inspect the repair. All joints should be smooth and shiny.
Shields
Removing and replacing shields will be done with the R-1070 R1319A station with the temperature control set to approximately 415°F (215°C) [445°F (230°C) maximum].
To remove the shield:
1. Place the circuit board in the R-1070’s holder.
2. Select the proper heat focus head and attach it to the heater chimney.
3. Add paste flux (Motorola P/N 6680333E71) around the base of the shield.
4. Position the shield under the heat-focus head.
5. Lower the vacuum tip and attach it to the shield by turning on the vacuum pump.
6. Lower the focus head until it is approximately 1/8” (0.3 cm) above the shield.
7. Turn on the heater and wait until the shield lifts off the circuit board.
8. Once the shield is off, turn off the heat, grab the part with a pair of tweezers, and turn off the vac-uum pump.
9. Remove the circuit board from the R-1070’s circuit board holder.
To replace the shield:
1. Add solder to the shield if necessary, using a micro-tipped soldering iron.
2. Rub the soldering iron tip along the edge of the shield to smooth out any excess solder. Use sol- der wick and a soldering iron to remove excess solder from the solder pads on the circuit board.
3. Place the circuit board back in the R1070’s R1319A circuit board holder.
4. Place the shield on the circuit board using a pair of tweezers.
5. Place a small bead of no-clean flux (Motorola P/N 6680333E71) around the tinned surface.
6. Position the heat-focus head over the shield and lower it to approximately 1/8” (0.3 cm) above the shield.
7. Turn on the heater and wait for the solder to reflow. The R1319A will record removal time, add 30 to 40 seconds for replacement.
8. Once complete, turn off the heat, raise the heat-focus head and wait approximately one minute for the part to cool.
9. Remove the circuit board and inspect the repair. No cleaning should be necessary.
Maintenance 3-5
3.5 Recommended Test ToolsTable 3-1 lists the recommended tools used for maintaining this family of radios. These tools are also available from Motorola.
Table 3-1. Recommended Test Tools
Motorola PartNumber
Description Application
RSX4043 Torx Driver Tighten and remove chassis screws
6680387A70 T-6 Torx Bit Removable Torx driver bit
WADN4055A6604008K016604008K02
Portable soldering station0.4mm replacement tip0.8mm replacement tip
Digitally controlled soldering IronFor WADN4055A soldering Iron
0180386A78 Illuminated magnifying glass with lens attachment.
0180302E51 Illuminated Magnification System Illuminated and magnification of components
0180386A82
6684253C726680384A981010041A86
0180303E45
Anti-static grounding kit
Straight proberBrushSolder (RMA type), 63/37, 0.5mm diameter1 lb. spoolSMD tool kit (Include with R1319A)
Used during all radio assembly and disassemblyprocedures
R-1321A R1319A Shields andsurface-mountedcomponent and ICremoval/rework station(order all heat-focus headsseparately)
Removal and assembly of surface-mountedintegrated circuits and shields. Includes five noz-zles
6680334B496680334B506680334B516680334B526680334B536680370B516680370B546680370B576680370B586680371B156680371B746680332E456680332E46
0.410” x 0.410”0.430” x 0.430”0.492” x 0.492”0.572” x 0.572”0.670” x 0.790”0.475” x 0.475”0.710” x 0.710”0.245” x 0.245”0.340” x 0.340”0.460” x 0.560”0.470” x 0.570”0.591” x 0.315”0.862” x 0.350”
Heat-focus heads for R-1319A work station
R1364A Digital Heated Tweezer System Chip component removal
R1427A Board Preheater Reduces heatsink on multi-level boards
6680309B53 Rework Procedures Manual Contains Application notes, procedures, and tech-nical references regarding rework equipment
3-6 Maintenance
3.6 Transmitter Troubleshooting Chart
No
Is Q4441 OK ?
YesIs drive from VCO >+4dBm?
No
Is voltage drop across R4497 >4.5V ?
No
Check Q4431 gate(open)and drain resistances (11kohm)
NoCheck Q4421 gate(open)and drain resistances (11kohm)
No
CheckPCIC_MOSBIAS_1
No
No
ChangeQ4573
START
No power
Is Vctrlthere?
Is Q4573 OK?
Check voltageon pin 4 U4501
Check voltageon pin 5 U4501
Check R4422-5and go back to top
TroubleshootASFIC
Check voltageon TP4531
ChangePCIC
Check R4409 &
R4473 and go backto top
CheckMOSBIAS_2
CheckASFIC
Are D4471 &D4472 OK?
ChangeD4471 &D4472
NoNoNoNo No
Yes
Yes
YesYes
Yes
YesYes
Yes
No
No CheckPCIC
Yes
Change Q4421
Change Q4431
Yes
Change U4401
YesDo visual checkon all components
No
Change Q4441
Troubleshoot VCO
Maintenance 3-7
3.7 Receiver Troubleshooting Chart
Bad SINADBad 20dB Quieting
No Recovered Audio
START
Audio at pin 8 of U3101?
Check Controller (in the case of no audio).Or else go to “B”
Yes
No
Spray or inject 44.85MHz into XTAL Filter FL3101.
Audio heard?BYes
No
Check 2nd LO (44.395MHz) at C3135.
LO present?BYes
Check volt-ages on
U3101. OK?
Biasing OK?
No
No
A
Yes
Check Q3102 bias for faults.
Replace Q3102.
Go to B
Yes
No
Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)
Check cir-cuitry around U3101. Replace U3101 if defect.
Check circuitry around Y3101. Replace Y3101 if defect.
3-8 Maintenance
IF Signal at C3101?
No
RF Signal at T4051?
RF Signal at C4015?
No
RF Signal at C4009?
No
RF Signal at C4025?
No or
Check harmonic filters L4491-L4493, C4492 and ant.switch D4471,D4472,L4472.
Check filter between C4025 & C4009. Check tuning voltage at R4060.
Inject RF into J4401
Is tuning volt-age OK?
No
Yes
Check RF amp (Q4003) Stage.
Check filter between C4015 & T4051.
Yes
Check T4051, T4052, D4051, R4052, L4008.
Yes
1st LO level OK?
Locked?
Yes
Check FGU
Yes
Trace IF signal from C3101 to
Q3101. Check for bad XTAL filter.
No
Yes IF signal at Q3102 collec-
tor?
Before replacing U3101, check
U3101 voltages.
Yes
Check for 5VDC
Is 9V3 present?
Check Supply Voltage cir-cuitry. Check U0611 and
U0641.
No
No
No
Check U4501.
Check varactor filter.
No
Yes
Yes
Yes
A
A
B
weak RF
Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)
Maintenance 3-9
3.8 Synthesizer Troubleshooting Chart
5V at pin 6 of
D4201
Is informationfrom µP U0101
correct?
Is U4201 Pin 47at = 13VDC
Is U4301 Pin 19<40 mVDC in RX &
>4.5 VDC in TX? (at VCO section)
Start
Visual check of the Board OK?
CorrectProblem
Check 5VRegulatorU4211
+5V at U4201Pin’s
13 & 30?
Is 16.8MHzSignal at
U4201 Pin 19?
Check Y4261, C4261, C4262, C4263, D4261
& R4261
Are signalsat Pin’s 14 &15 of U4201?
Check R4201
Check C4381
Is U4201 pin 2 >4.5 VDC in Rx & <40 mVDC in Rx
Replace U4201
RemoveShorts
Is there a shortbetween Pin 47 and
Pins 14 & 15 ofU4201?
Replace orresolder
necessarycomponents
Is RF level atU4201 Pin 32 -12 < x <-25
dBm?
Are R4221,R4222,R4223,C4221,C4222,
& C4223 OK?
Replace U4201
If L4225, C4229 & C4227are OK, then see VCOtroubleshooting chart
Are Waveformsat Pins 14 & 15
triangular?
Do Pins 7,8 & 9of U4201 togglewhen channel is
changed?
Check programminglines between U0101
and U4201 Pins 7,8 & 9
Replace U4201
Check uP U0101Troubleshooting
Chart
NO
YES
NO
YES
NO
YES
NO
NO
NO
YES
YES
NO
YES
YES
NO
YES
YES
YESNO
NO
NO
NO
YES
NO
YES
YES
Check D4201, C4202, C4203, & C4206
5V at U4201 pins 5, 20, 34 &
36
Check 5V Regulator
U4211
Is 16.8MHz signal at
U4201 pin 23?
Replace U4201
YES
NO
NO
YES
NO
YES
Troubleshooting Flow Chart for UHFMobile Synthesizer Section
3-10 Maintenance
This page intentionally left blank
Maintenance 3-11
3.9 VCO Troubleshooting Chartl
RX VCO
PARTS ASSOCIATED THOSE PINS ARE
REPLACE U4301
D L4361 ARE ACE U4301
WER OK BUT MODULATION
IO = 180 mVRMST “-” SIDE OF
C4325
4.5VDCAT CR4321
4321 AND R4321ARE OK, THENPLACE CR4321
REPLACER4322
REPLACE C4325
NO
NO
YES
YES
TX VCO
LOW OR NO RF SIGNAL AT TP4003VISUAL CHECKOF BOARD
OK?
4.5V DC ATU4301 PIN 14&18
35mV DC ATU4301 PIN 19
ARE Q4301BASE AT 2.4V
EMITTER AT 1.7VCOLLECTOR AT 4.5V
CORRECTPROBLEM
NO
YES
MAKE SURE SYNTHESIZER ISWORKING CORRECTLY ANDRUNNER BETWEEN U4201 PIN
28 AND U4301 PIN 14&18 IS OK.
CHECK RUNNERBETWEEN U4201 PIN 2
AND U4301 PIN 19
REPLACE Q4301
IS RF AVAILABLE AT BASE OF Q4332
IF ALL PARTS FROM U4301PIN 8 TO BASE OF Q4332 ARE
OK, REPLACE U4301
ARE Q4332BASE AT 0.7V
EMITTER AT 110mVCOLLECTOR AT 4.5V
IF ALL PARTS ASSOCIATEDWITH THE PINS ARE OK, REPLACE Q4332
IF ALL PARTS FROM COLLECTOROF Q4332 TO TP4003 ARE
OK, REPLACE Q4332
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
LOW OR NO RF SIGNALAT INPUT TO PA
VISUAL CHECKOF BOARD
OK?
4.5V DC ATU251 PIN 14&18
4.8V DC ATU4301 PIN 19
ARE U251 PINS13 AT 4.4V
15 AT 1.1V10 AT 4.5V16 AT 1.9V
IS RF AVAILABLE AT TP4534
IF ALL WITHOK,
IF R4361 ANOK, REPL
IF ALL PARTS FROM TP4534
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
PONO
AUDA
IF C
RE
TO U4401 PIN 16 ARE OK, REPLACE U4301
3-12 Maintenance
This page intentionally left blank
4-1
Chapter 4
Schematic Diagrams, Overlays, and Parts Lists
4.1 IntroductionThis chapter provides schematic diagrams, overlays, and parts lists for the radio circuit boards and interface connections.
4.1.1 Notes For All Schematics and Circuit Boards* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.
1. Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads (pF) or microfarads (µF).
2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multime-ter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series with the voltage probe to prevent circuit loading.
3. Reference Designators are assigned in the following manner:
800-900 = Control Heads
100/200/400/500/600 Series = Controller
100/200/400/500/600/3000/4000 Series = UHF Transmitter
3000 Series = VHF Transmitter
4. Interconnect Tie Point Legend:
UNSWB+ = Unswitched Battery Voltage (12V)
SWB+ = Switched Battery Voltage (12V)
R5 = Receiver Five Volts
CLK = Clock
Vdda = Regulated 5 Volts (for analog)
Vddd = Regulated 5 Volts (for digital)
CSX = Chip Select Line (not for LVZIF)
SYN = Synthesizer
DACRX = Digital to Analog Voltage (For Receiver Front End Filter)
VSF = Voltage Super Filtered (5 volts)
VR = Voltage Regulator
4-2 Introduction
LAYER 1 (L1)
LAYER 2 (L2)LAYER 3 (L3)LAYER 4 (L4)
LAYER 5 (L5)LAYER 6 (L6)
INNER LAYERS
SIDE 1
SIDE 2
6-LAYER CIRCUIT
COPPER STEPS IN PROPER LAYER SEQUENCE
BOARD DETAIL VIEWING
4-3
D0871
D0872
D0879
D0881
D0884
S0861
ZWG0130114
Figure 4-1. PRO3100/CDM750 Control Head Top Overlay
D0873
D0874D0875 D0876
D0877 D0878
D0885
D0886
D0887D0888
2
3579
8 6 4 10
J0811
JU0852
JU0853
JU0854
4
12
3
5R0823
S0862S0863S0864
S0865S0866
1
4-4
0810
C0811
C08
13
C08
15
C0816 C0817C0818
C0819
C0821
C0822
C0824
C0843
0821
D0822
Q0821
Q0822
R0810
R0811
R08
12
R08
13
R08
14
R08
15
R08
16
R0821
R0822
R0824
1 R0847
R0871
R0874
TP0835
0811
VR0816
VR0817
VR0821
VR0822
VR0823
ZWG0130113
Figu
0
C0802
C0803
C0804
C0805
C0806
C0808
C0809
C
C0823
C0831
C0832
C0833
D
D0831
12
J0801
1
2P0801
Q0823
Q0841
Q0843
Q0871
Q0872Q0873
Q0874
Q0875Q0876
Q0877Q0878
Q0879
Q0881
Q0885
R0825
R0831
R0832
R0833
R0834
R0835
R0836
R0837 R0838
R0839
R084
R0842R0843 R0844
R0845
R0849
R0852
R0853
R0854
R0861 R0862
R0864
R0866 R0867
R0872
R0873
R0875R0876
R0877R0878
R0879
R0880
R0881
R0885
TP0831
TP0832
TP0833
TP0834
TP0836
TP0837
TP0838
149
1733
U0831
1
45
8
U0832
3
U0833
VR
164
48
3216
re 4-2. PRO3100/CDM750 Control Head Bottom Overlay
4-5
KEYPAD ID
CONTROL HEAD ID
28RA_AS30B_RW*
7_AD7 42
7_A15 5
0_AD0 341_AD1 362_AD2 373_AD3 384_AD4 39
405_AD56_AD6 41
561_OC1
B0_A8 12
B1_A9 112_A10 10
3_A11 94_A12 8
75_A136_A14 6
1A0_IC364A1_IC263A2_IC1625_OC1594_OC1583_OC1572_OC1
NC
10N
C5 JU0853
12
10
6
1 0
0
C0804470pF
2
7
432
R084410K
P0801-2
54
R084947K
P0801-1NU82pFC0809
100KR0852
R084247K
4.7K
6 1
7
R0845
C0806470pF
NU
3
R084110K
5
4
82pFC0805
Q0841
3 2
1
Q0843
NU
C0802470pF470pF
7
C0803
JU0852
12
06
2
JU0854
12
10KR0843
5
100K100KR0854R0853
8
ON_OFF_SENSE
5V
HOOK
5V
CH_KP_ID(0:7)
LED_CNTRL(0:8)
CH_REQUEST
5V
5V
PTT_IRDEC
SCI_TX
BL_GREEN
ON_OFF_CONTROL
FLT_A+
MIC
BUS+
HANDSET_AUDIO
5V
ZWG0130239
Radio Interface
er Section
Figure 4-3. PRO3100/CDM750 Control Head Schematic Diagram, Sheet 1
10
CONTROLHEAD
GM300
SCI_RX
RESET
BOOT_VPP
BOOT_MODE
WARIS
HANDSET_AUDIO
1
CONTROLLER
MIC
GROUND
SCI_TX
EXT_KP_ROW
EXT_KP_COL
FLT_A+
456
BUS+
23 5V
HOOK
45 XIRQ
33 XTAL
J0811
PTT_IRDECODER
789
CONNECTOR
J0801
MICROPHONECONNECTOR
STSTR
55V
DD
22V
RH
21V
RL
23V
SS
1V
SS
224 49
VS
S3
PE1_AN115PE2_AN217PE3_AN319PE4_AN414
16 PE5_AN5PE6_AN618PE7_AN720
43 RESET
PC
PD0_RXD47PD1_TXD50PD2_MISO51
PD3_MOSI5253 PD4_SCK
PD5_SS*54
PE0_AN013
PB
PCPCPCPCPCPCPC
PA7_PA
PP
PBPBPBPBPB
60N
C9
PPP
PA3_OCPA4_OCPA5_OCPA6_OC
61
3N
C2
NC
34
NC
426 32
35N
C6
44N
C7
NC
848
U083129
CLK_E31 EXTAL
46 IRQ
27 MODA_LIR*25 MODB_VSTBY
NC
12
MC68HC711E9
J0811-5
100R0835
R08390NU
R0847
22
J0801-6
J0801-10
Q0823
NU
VR081133V
NU
C0818470pF470pF
C081682pF
J0811-8
C0817
J0801-7
2GND
CSTCC8.00MGU0833
1C1
3C2
J0801-11
J0801-8
0.1uFC0833
R083347K
J0811-4
J0811-3
R0831
J0811-2
1MEG
VR081620V
R0810
13KJ0811-10
J0811-9
J0801-9
J0801-14
2.2KR0832
TP08381
Q0821
J0811-6
C0810470pFNU
C0819470pF
NU
10KR0838R0834
270
R083733K
470pFC0808
J0801-4
51K
R0816
R0811
51K
C0815470pF
1
470pFC0811
10K
TP0831
1
R0836
TP0836
C0823.01uF
1
R082110K
J0801-13
TP0833
J0801-1
J0801-2
J0801-3
C0843
J0801-5
470pF470pF
C0813
1
TP08351
TP0834
C0824.01uFNU
1K
R0825
D0821
Q0822
D0831
J0811-7
J0801-12
VR081720V
TAB
TAB1
VA
R
C08222.2uF
R082350K
NEG
POS
R0824
4.7KC0821470pFNU
R082224K
5.6V5.6V
D0822
VR0822
C08320.1uF
J0811-1
C08313.3uF
1
NC5
RESET 1
TP0837
MC33064 NU
GND
4
INPUT2
NC13
NC25
NC3 6NC4 7
8
U0832MC33064
R0812
22
270
R081310
R0814
R0815
13K
VR08215.6V
5.6VVR0823
1
USW_5V
VOLUME
VOLUMEEXT_KP_ROWEXT_KP_COLINT_KP_ROWINT_KP_COL
USW_5V
5V
5V
5V
5VFLT_A+
BUS+
TP0832
CH_REQUEST
5V
5V
5V
HOOK
ON_OFF_SENSE
ON_OFF_CONTROL
5V
PTT_IRDEC
FLT_A+
FLT_A+
5V
5V
PTT_IRDEC
MIC
EXT_KP_ROW
EXT_KP_COL
SCI_TX
BUS+
FLT_A+
5V
5V
5V
5V
HANDSET_AUDIO
Microphone Interface
ControllON/OFF Section
4-6
LED3LED2 LED6LED4 LED5
Q0872Q0871
redD0876
redD0875
R0876R0875270270
Q0879Q0878
D0878yellow
D0879green
77
7
2
Q0873
D0887green
86
270
n
R0871
D0885green
greenD0888
n
n81
84
8
R0885270
1
Q0885
1 0
7
D0873red red
D0871 D0872red
R0873270
R0872270
Q0876Q0875
R0879270270
R0878
ZWG0130240
light
s LED
tion LED
Figu
green
0V/2V
0V/3V
1V/0V
LED1
F4 P2
F3 P1
F2
F1
F1 F2 F3 F4
P1 P2
LED1 LED2 LED3
1V/1V
0V/0V
0V/1V
LED4
LED6 LED5
S0864 S0863 S0862 S0861
S0866 S0865
KeypadLayout
red yellow
D0874red
51KR0861
43KR0864
R088022K D08
red
Q087
7
13KR0862
D08gree
gree
greeD08
D08
3
13K
R0867
4
R088270
P55
P66
P77
P88
Q0881
S0861
P11
P22
P33
4 P4
51K
7 P7
8 P8
R0866
1 P1
2 P2
3 P3
4 P4
5 P5
6 P6
P88
S0864
P11
P22
P33
4 P4P55
P66
P77
7 P7
8 P8
S0863
S0862
1 P1
2 P2
3 P3
4 P45 P5
6 P6 6 P6
P77
8 P8
1 P1
2 P2
3 P3
4 P45 P5
P55
P66
P77
P88
S0866
S0865
P11
P22
P33
P44
270R087
R0874270
Q0874
65
FLT_A+
LED_CNTRL(0:8)
BL_GREEN
FLT_A+
FLT_A+
LED_CNTRL(0:8)
5V
5V
INT_KP_COL
INT_KP_ROW
KeypadBack
Statu
Sunc
re 4-4. PRO3100/CDM750 Control Head Schematic Diagram, Sheet 2
4-7
T
CCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDJJQQQQQQQQQQQQQQQ
Diode, ZenerDiode, 5.6VDiode, 5.6VDiode, 5.6V
Description
able 4-1. PRO3100/CDM750 Control Head Parts ListReferenceDesignator
Motorola Part No. Description
0803 2113741F17 470pF0804 2113741F17 470pF0805 2113740F49 100pF0808 2113741F17 470pF0811 2113741F17 470pF0813 2113741F17 470pF0815 2113741F17 470pF0816 2113741F17 470pF0817 2113740F49 82pF0822 2311049A40 2.2uF0823 2113741F49 10nF0831 2311049A42 3.3uF0832 2113743E20 100nF0833 2113743E20 100nF0843 2113741F17 470pF0821 4813833C02 Dual Schottky0822 4813833C02 Dual Schottky0831 4880236E05 Schottky0871 4886171B01 LED, Red0872 4886171B01 LED, Red0873 4880479B01 LED, Red0874 4886171B01 LED, Red0875 4886171B01 LED, Red0876 4886171B01 LED, Red0877 4886171B01 LED, Red0878 4886171B03 LED, Yellow0879 4886171B04 LED, Green0881 4886171B04 LED, Green0884 4886171B04 LED, Green0885 4886171B04 LED, Green0886 4886171B04 LED, Green0887 4886171B04 LED, Green0888 4886171B04 LED, Green801 0902636Y02 12-Pin Connector811 2864287B01 10-Pin Jack0821 4805921T02 Transistor, Dual0822 4880048M01 Transistor, NPN0823 4805921T02 Transistor, Dual0841 4880048M01 Transistor, NPN0843 4880048M01 Transistor, NPN0871 4813824A10 Transistor, NPN0872 4813824A10 Transistor, NPN0873 4813824A10 Transistor, NPN0874 4813824A10 Transistor, NPN0875 4813824A10 Transistor, NPN0876 4813824A10 Transistor, NPN0877 4813824A10 Transistor, NPN0878 4813824A10 Transistor, NPN0879 4813824A10 Transistor, NPN0881 4813824A10 Transistor, NPN
Q0885 4813824A10 Transistor, NPNR0810 0662057A76 13K R0811 0662057A90 51K R0812 0662057A09 22 R0813 0662057A01 10R0814 0662057A35 270 R0815 0662057A76 13K R0816 0662057A90 51K R0821 0662057A73 10K R0822 0662057A82 24K R0823 1805911V01 Volume Pot R0824 0662057A65 4K R0825 0662057A49 1K R0831 0662057B22 1M R0832 0662057A57 2K R0833 0662057A89 47K R0834 0662057A35 270R0835 0662057A25 100R0836 0662057A73 10K R0837 0662057A85 33K R0838 0662057A73 10K R0841 0662057A73 10K R0842 0662057A89 47K R0843 0662057A73 10K R0844 0662057A73 10K R0845 0662057A65 4K R0847 0662057A09 22 R0849 0662057A89 47KR0852 0662057A97 100KR0853 0662057A97 100KR0854 0662057A97 100KR0861 0662057A90 51KR0862 0662057A76 13KR0864 0662057A88 43KR0866 0662057A90 51KR0867 0662057A76 13KR0871 0660076A35 270R0872 0660076A35 270R0873 0660076A35 270R0874 0660076A35 270R0875 0660076A35 270R0876 0660076A35 270R0877 0660076A35 270R0878 0660076A35 270R0879 0660076A35 270R0880 0662057A81 22KR0881 0662057A35 270R0885 0662057A35 270U0831 5113802A24 ICU0833 4886061B01 8 MHzVR0816 4805656W09 Diode, Zener
ReferenceDesignator
Motorola Part No. Description
VR0817 4805656W09VR0821 4813830A15VR0822 4813830A15VR0823 4813830A15
ReferenceDesignator
MotorolaPart No.
4-8
This page intentionally left blank
4-9
D0937
D0941
D0942
D0945
D0946D0953
D0954
D0958
D0967
D0971
D0972
D0975
D0976D0983
D0984
D0988
40
80
S0908
S0910
30
70
ontrolhead B/CB04-P4 TOP SIDE
CHECKONE
O.K. AS IS
O.K. AS MARKED
( )
( )
ISS. REVISION RLSE.
CORRECTEDASMARKED
DATEENGINEERDATE PROGRAM DISK
RLSE.
DWG. NO.
E:
DATECHECKERDATE
Illustrator0/March/99
ZWG0130136
P4
ZWG0130136
Figure 4-5. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Top Overlay
D0877D0879
D0880
D0931
D0932
D0933
D0934
D0935
D0936
D0938
D0939
D0940
D0943
D0944
D0947
D0948
D0949
D0950 D0951
D0952
D0955
D0956
D0957
D0961
D0962
D0963
D0964
D0965
D0966
D0968
D0969
D0970
D0973
D0974
D0977
D0978
D0979
D0980 D0981
D0982
D0985
D0986
D0987
41
H0971
2
3579
8 6 4 10
J0811
4
12
3
5R0823
S0852
S0853
S0854
S0901
S0902
S0903
S0904
S0905
S0906
S0907
S0909
U0834
1
1 10 20
6050
WARIS C8486155ILLUSTRATOR
LETTERING SIZREQUIRES:
EDITORRK 3
4-10
C0810
C0811
C08
12
C0813
C0815
C0816
C0817
C0818 C0819
C0821
C0822
C0823C0831
C0832
D08
21
D0822
Q08
21
Q08
22
Q08
23
Q08
41
Q0843
Q08
77
Q08
78
Q0879
R0810
R08
11
R0812R0813 R0814
R0815
R08
16
R08
17
R0821R0822
R0824
R0825
R0841
R0843
R0844R0845
R0847
8 R0849
R0877R0878
79
TP0831
TP0832
TP0833
TP0835
TP0837
TP0838
1
17
14
5 8
U0832 VR
0811
VR
0812
VR
0816
VR
0817
VR
0821
VR
0822
64
ZWG0130137
Figu
C0802
C0803
C0804
C0805
C0806
C0807
C0808
C0833
C0842
C0843
C0931
C0932
C0933
C0971
C0972
C0973
C0974C0975
C0976 C0977
C0978 C0979
C0980 C0981
C0982
C09
83
C0984
C0985
D0831
12
J0801
12
P0801
1
2
3
4 Q0931 Q0932
1
2
3
4 Q0933 Q0934
R0831
R0832
R0833
R0834
R0835
R0836
R0837
R0838R0842
R084
R0850R0851
R0852
R0853
R0854
R0855
R0856
R0857
R0858
R0859
R0860
R0861
R0862
R0863
R0864 R0865
R08
R0901
R0902R0903
R0904
R0905
R0906R0907
R0908 R0909
R0910
R0931
R0932
R0933 R0934R0935
R0936
R0937R0938
R0941 R0942
R0943
R0944 R0945
R0946R0947
R0948
R0972
R0973
R0974
R0975
R0976
R0977
R0978
TP0834TP0836
TP0971
TP0972
TP0973
TP0974TP0975
49
33
U0831
3U0833
14
58
U0931
128103102
6564
3839
U0971
1
1
re 4-6. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Bottom Overlay
4-11
CONTROL HEAD ID
KEYPAD ID
OLLER
080270pFNU
2 1
R0862
R0858
100K
47K
Q0843
45
8
2
10
100K
56
R0861
7
R084768K
STRA_AS 28
STRB_RW* 30
41PC6_AD6 42PC7_AD7
6PB6_A14 5PB7_A15
34PC0_AD0 36PC1_AD1 37PC2_AD2 38PC3_AD3 39PC4_AD4 40PC5_AD5
PA6_OC2_OC1 57
PA7_PA1_OC1 56
12PB0_A8 11PB1_A9 10PB2_A10 9PB3_A11 8PB4_A12 7PB5_A13
NC
848
NC
960
PA0_IC3 1
PA1_IC2 64PA2_IC1 63
PA3_OC5_OC1 62
PA4_OC4_OC1 59
PA5_OC3_OC1 58
NC
12
NC
1061
NC
23
NC
34
NC
426
NC
532
NC
635
NC
744
711E9
4
31MC68HC711E9
6
1
6
3
2.2uF
0
5
2
C0843
47KR0842
3
3
R084947K
47KR0855 4.7K
R0863
R0850
NU47K
0
R085647K
2
NU47KR0853
0
R08454.7K
C08422.2uF
NU
Q0879
D0880
Q0878
yellowD0877red
Q0877
R084110K 10K
R0843
68KNU
R0848
67
R0879
5
270R0878270
R084410K
R0865
100K
4.7K
4
8R0860
5
7
NU47K
R0851
7 4
1
D0879green
R0857
Q0841
NU47K
NU47KR0854
6
47KR0859
270R0877
R0852
7
47K
12
12
S0854
2
S0853SWITCHS0852
1
3
R08644.7K
HOOK
5V
CH_REQUEST
ON_OFF_SENSE
BL_REDBL_GREEN
5V
5V
PTT_IRDEC
SCI_TX
5V
HANDSET_AUDIO
BUS+
MIC
FLT_A+
ON_OFF_CONTROL
FLT_A+
LED_CNTRL(0:8)
LED_CNTRL(0:8)
CH_KP_ID(0:7)
5V
CONTROLHEAD PRO5100/CDM1250 NU NU NU USED USED USED USED NU
CONTROLHEAD PRO7100/CDM1550 NU NU USED NU USED USED NU USED
R0850 R0851 R0852 R0853 R0855 R0856 R0857 R0858
Status LED
Controller Section
Figure 4-7. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Schematic Diagram
RESET
TEMP_SENSE
CONTR
1
J0811
3
VPP
67
HANDSET_AUDIO
ANALOG_INPUT_3
5V
HOOK
89 10
WARISGM300
MICROPHONE
BOOT_MODE
SCI_RX
SCI_TX
FLT_A+5V
GND
MIC
PTT_IRDECODER
CONNECTOR
BUS+
CONTROLHEADCONNECTOR
GROUND
ANALOG_INPUT_2
FLT_A+
2
J0801
45
C4470pF
C0803C0807470pF
100R0835
D0821
J0801-1
82pFNU
3
C080
2
C0823.01uF
2
R0824
4.7K
J0801-6
470pFNU
C0810
33V
VR081133VNU
470pF
470pFNU
C0811
NU
C0818 C0819470pF
C0816470pF
C081782pF
TP08371
TP0838
P0801-2
TP0832
P0801-1
TP0835
J0811-1
J0801-2
4
470pF
470pF
C0813
VSS3
49
XIRQ45
XTAL33
C0815
RESET
VDD
55VR
H22
VRL
21
VSS1
23
VSS2
24
13 PE0_AN015 PE1_AN117 PE2_AN219 PE3_AN314 PE4_AN416 PE5_AN518 PE6_AN620 PE7_AN7
43
47 PD0_RXD50 PD1_TXD51 PD2_MISO52 PD3_MOSI53 PD4_SCK54 PD5_SS*
MC68HC
CLK_E29
EXTAL31
IRQ46
MODA_LIR*27
MODB_VSTBY25
U08
LM50
U0834
GND3
POS
1
VOUT2
LM50
R082110K
R0834270
C08320.1uF
C0833
0.1uFNU
10V
10VVR0821
TP0833
?X
TP0831
1
C0804470pF
TP0836
R082222K
TP0834
C0806470pF
NU
5.6V5.6V
VR0812
82pFC0805
D0822
J0811-5
J0811-4
J0811-3
2.2uF
J0811-2
C0822
R083810K
R083610K
VR081620V
VR081720V
J0801-11
Q0822
51KR0811
1KR0825
J0811-7
Q0823
C0821470pFNU
4
1
C08313.3uF
U0832
GN
D4
INPUT2
NC13
NC25
NC3 6NC4 7
8NC5
RESET
MC33064MC33064
R0812 22
10R0813
5.6V5.6VVR0822
D0831
3
1
R083347K
R08322.2K
R081651K
J0811-8
R08311MEG
50K
NEG
POS TAB
TAB1
VAR
R0823
J0801-9
J0801-12
J0801-10
J0801-14
J0801-13
J0811-9
J0811-10
0
J0801-5
J0801-7
R083733K
CSTCC8.00MG
1C1
3C2
2 GNDQ0821
CSTCC8.00MG
U0833
J0801-3
J0811-6
J0801-4
C0812
470pF
22
J0801-8
R0817
R0814
270
R0815
13K
R081013K
5V
5V
5V
5V
BUS+ 5V
RESET
5V
HOOK
SCI_TX
5V
VOLTAGE_SENSE
FLT_A+
HANDSET_AUDIO
PTT_IRDEC
MIC
BUS+
AN(0:4)
AN(0:4)
5V
USW_5V
FLT_A+
5V
CH_REQUEST
ON_OFF_CONTROL
5V
5V
ON_OFF_SENSE
PTT_IRDEC
FLT_A+
5V
AN(0:4)
USW_5V
FLT_A+
AN(0:4)
Transceiver InterfaceMicrophone Interface
ON/OFF Section
ZWG0130241
4-12
09
07
04
P7
P8
01
P1
P2
P3
P4P5
P6
P6
P7
P8
S0905
P1
P2
P3
P4P5
P5
P6
P7
P8
S0902
P1
P2
P3
P4
P5
P6
P7
P8
S0910
P1
P2
P3
P4
P4P5
P6
P7
P8
S0908
P1
P2
P3
P3
P4P5
P6
P7
P8
S0906
P1
P2
S0903
COL3 COL2
ROW1
ROW2
ROW3
ROW4
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
ZWG0130242
Figu
Keypad BLayout
P1
P2
P3
P4
SW0906 SW0910
SW0903
P1
P2
P3
P4
SW0906 SW0904
SW0903 SW0901
SW0909 SW0910
SW0908SW0907
SW0902
SW0905
SW0908
SW0905
SW0902
0
1
43KR0909
43K
130KNU
R0904
R0910
130KNU
R0905
51K51K R0906
R0901
22KR0908
22K
13K
R0903
R090213KR0907
P2
P3
P4P5
P6
P7
P8
S09
P1
P1
P2
P3
P4P5
P6
P7
P8
P8
S09
P1
P2
P3
P4P5
P6
P7
8 P8
S09
1 P1
2 P2
3 P3
4 P45 P5
6 P6
7 P7
S09
COL2
COL1
ROW2
ROW1
ROW3 COL3
5V
ROW5
ROW4
COL5
COL4
AN(0:4)
COL4
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7CONTROLHEAD PRO5100/CDM1250 NU
CONTROLHEAD PRO7100/CDM1550 USED
R0909
Keypad CLayout
re 4-8. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Keypad Schematic
4-13
D0949
D0948
NU
NU
D0946NU
NUD0945
D0944NU
D0942NU
NUD0941
NUD0940
NUD0938
D0937
D0958
NUD0957
NU
D0956
NU
NU
D0954
D0953
D0952
NUD0950
D0939D0935NU
NU
NU
D0934
D0933NU
NUD0936
NUD0951 D0955
NUD0947
NUD0943
NUD0932
NUD0931
NU10R0938R0937
10NU0.1uFC0932
R093610K
R093510K
18
4
Q0932NU
U0931-1
MC33072
MC33072
2
3
U31
R0934NU100K
NU
NU
NU
NU
ZWG0130243
Figure 4-9. PRO5100/PRO7100/CDM1250/CDM1550 Control Head LCD Schematic
BACKLIGHT GREEN
NU4.7K
R0933
NUD0961HSMG-H690
D0976
D0975
D0974
D0973
0.1uFC0933
D0968D0988
D0987
D0986
D0985
D0984
D0983
D0982
D0981D0969
D0967
D0965
D0966
D0964NU
NUD0963
D0962NU
D0970
D0971
Q0934R0943
4.7K
C09310.1uF
NU33K
R0931
R0932
NU10K
NQ09
D0980
D0979
D0978
D0977
10KR0946
10K
33KR0942
R0945
10KR0941
D0972
100KR0944
R094810 10
78
4
R0947MC33072
U0931-2MC33072
6
5
Q0933
FLT_A+
FLT_A+
FLT_A+
BL_GREEN BL_RED
FLT_A+
CONTROL HEAD PRO5100/CDM1250 NU NU NU NU
CONTROL HEAD PRO7100/CDM1550 USED USED USED USED
D0981 D982 D0983 D0984
4-14
C09852.2uF
C0984.01uF
SE
G65
_C66
SE
G66
_C67
SE
G67
_C68
SE
G68
_C69
SE
G69
_C70
SE
G62
_C63
SE
G63
_C64
SE
G64
_C65
NC
13
H097104B01
04B01NU
VD
D7
VS
S
125
SE
G77
126
SE
G78
127
SE
G79
128
118
SE
G70
119
SE
G71
120
SE
G72
121
SE
G73
122
SE
G74
123
SE
G75
124
SE
G76
SE
G62
111
SE
G63
112
SE
G64
113
SE
G65
114
SE
G66
115
SE
G67
116
SE
G68
117
SE
G69
CO
M8
40C
OM
941
CO
M10
42C
OM
1143
CO
M12
44C
OM
1345
CO
M14
46C
OM
1547
SED1526F0A
SED1526F0A
ZWG0130244
5V
Figu
DISPLAY
THE LCD IS OF HARDWAREKITS GLN7358A (EUR) and GLN7359A (US)
C09832.2uF
R0975200K
1.8MEG2
R0974
R09731.2MEG
0
1uFNU
R0972
1uFC0972C0971
C09731uF
C09800.1uF0.1uF0.1uF
C0976C0975C09740.1uF
C09820.1uFNU0.1uF
NU0.1uFNU
C0981C0979C09770.1uF
NU
6 7
012
100KNU
3 4 5
R0978
R0977200KNU
100K
SE
G9_
C10
0 1R0976
SE
G6_
C7
SE
G7_
C8
SE
G8_
C9
SE
G58
_C59
SE
G59
_C60
SE
G5_
C6
SE
G60
_C61
SE
G61
_C62
SE
G50
_C51
SE
G51
_C52
SE
G52
_C53
SE
G53
_C54
SE
G54
_C55
SE
G55
_C56
SE
G56
_C57
SE
G57
_C58
SE
G43
_C44
SE
G44
_C45
SE
G45
_C46
SE
G46
_C47
SE
G47
_C48
SE
G48
_C49
SE
G49
_C50
SE
G4_
C5
SE
G36
_C37
SE
G37
_C38
SE
G38
_C39
SE
G39
_C40
SE
G3_
C4
SE
G40
_C41
SE
G41
_C42
SE
G42
_C43
SE
G29
_C30
SE
G2_
C3
SE
G30
_C31
SE
G31
_C32
SE
G32
_C33
SE
G33
_C34
SE
G34
_C35
SE
G35
_C36
SE
G21
_C22
SE
G22
_C23
SE
G23
_C24
SE
G24
_C25
SE
G25
_C26
SE
G26
_C27
SE
G27
_C28
SE
G28
_C29
SE
G14
_C15
SE
G15
_C16
SE
G16
_C17
SE
G17
_C18
SE
G18
_C19
SE
G19
_C20
SE
G1_
C2
SE
G20
_C21
CO
M7_
NC
CO
MS
SE
G0_
C1
SE
G10
_C11
SE
G11
_C12
SE
G12
_C13
SE
G13
_C14
CO
M0_
R1
CO
M1_
R2
CO
M2_
R3
CO
M3_
R4
CO
M4_
R5
CO
M5_
R6
CO
M6_
R7
WR
17 1
V2
2
V3
3
V4
4
V5
5
VO
UT
8V
R6
SE
G8
57S
EG
958
SR
116
SR
215
V1
SE
G7
56 110
103
SE
G55
104
SE
G56
105
SE
G57
106
SE
G58
107
SE
G59
108
SE
G6
55
SE
G60
109
SE
G61
SE
G47
96S
EG
4897 98
SE
G49
SE
G5
54
SE
G50
99S
EG
5110
0S
EG
5210
1S
EG
5310
2S
EG
54
SE
G4
53
SE
G40
89S
EG
4190
SE
G42
91S
EG
4392
SE
G44
93S
EG
4594
SE
G46
95
SE
G32
81S
EG
3382
SE
G34
83S
EG
3584
SE
G36
85S
EG
3786
SE
G38
87S
EG
3988
SE
G25
74S
EG
2675
SE
G27
76S
EG
2877
SE
G29
78
SE
G3
52
SE
G30
79S
EG
3180
SE
G18
67S
EG
1968
SE
G2
51
SE
G20
69S
EG
2170
SE
G22
71S
EG
2372
SE
G24
73
SE
G10
59S
EG
1160
SE
G12
61S
EG
1362
SE
G14
63S
EG
1564
SE
G16
65S
EG
1766
D5
29
D6
30
D7
31
FR
22
M_S
14
RD
18
SE
G0
49S
EG
150
CO
MS
48
CS
120
CS
219
D0
24
D1
25D
226
D3
27
D4
28
CO
M2
34C
OM
335
CO
M4
36C
OM
537
CO
M6
38C
OM
739
CO
M0
32C
OM
133
A0
21
CA
P1_
NE
G11
CA
P1_
PO
S12
CA
P2_
NE
G9
CA
P2_
PO
S10
CL
23U0971 Display Driver
C09780.1uF
3
TP0974
TP0973
TP0975
TP0972
5V
RESETCH_KP_ID(0:7)
LED_CNTRL(0:8)
5V
VOLTAGE_SENSE
TP0971
re 4-10. PRO5100/PRO7100/CDM1250/CDM1550 Control Head Display Schematic
4-15
Ttr
* Models PRO7100/CDM1550 Only** Models PRO5100/CDM1250 Only
CCCCCCCCCCCCCCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDDDD
22 47K47K47K47K47K47K47K47K100K100K100K4K4K4K27027027051K13K22K43K51K13K22K43K10K10K1010K33K4K100K10K10K101001.2M1.8M200K100KICVoltage Sensor8 MHzTemperature Sen-sorICLCD Driver
Diode, Zener
Description
VR0817 4805656W09 Diode, ZenerVR0821 4813830A23 Diode, 5.6VVR0822 4813830A15 Diode, 5.6V
ReferenceDesignator
Motorola Part No. Description
able 4-2: PRO5100/PRO7100/CDM1250/CDM1550 Con-ol Head Parts List
ReferenceDesignator
Motorola Part No. Description
0803 2113741F17 470pF0804 2113741F17 470pF0805 2113740F49 100pF0807 2113741F17 470pF0811 2113741F17 470pF0812 2113741F17 470pF0813 2113741F17 470pF0815 2113741F17 470pF0816 2113741F17 470pF0817 2113740F49 82pF0822 2311049A40 2.2uF0823 2113741F49 10nF0831 2311049A42 3.3uF0832 2113743E20 100nF0843 2311049A40 470pF0931 2113743E20 100nF0933 2113743E20 100nF0971 2311049A07 1uF0973 2311049A07 1uF0974 2113743E20 100nF0975 2113743E20 100nF0976 2113743E20 100nF0978 2113743E20 100nF0980 2113743E20 100nF0983 2311049A09 2.2uF0984 2113741F49 10nF0985 2311049A40 2.2 uF0821 4813833C02 Dual Schottky0822 4813833C02 Dual Schottky0831 4880236E05 Schottky0877 4886171B01 LED, Red0879 4886171B04 LED, Green0880 4886171B03 LED, Yellow0951* 4886171B02 LED, Orange0952* 4886171B02 LED, Orange0953* 4886171B02 LED, Orange0954* 4886171B02 LED, Orange0965 4886171B04 LED, Green0966 4886171B04 LED, Green0967 4886171B04 LED, Green0968 4886171B04 LED, Green0969 4886171B04 LED, Green0970 4886171B04 LED, Green0971 4886171B04 LED, Green0972 4886171B04 LED, Green0973 4886171B04 LED, Green0974 4886171B04 LED, Green0975 4886171B04 LED, Green0976 4886171B04 LED, Green
D0977 4886171B04 LED, GreenD0978 4886171B04 LED, GreenD0979 4886171B04 LED, GreenD0980 4886171B04 LED, GreenD0981* 4886171B04 LED, GreenD0982* 4886171B04 LED, GreenD0983* 4886171B04 LED, GreenD0984* 4886171B04 LED, GreenD0985 4886171B04 LED, GreenD0986 4886171B04 LED, GreenD0987 4886171B04 LED, GreenD0988 4886171B04 LED, GreenJ801 0902636Y02 12-pin connectorJ811 2864287B01 10-pin connectorP0801 2809926G01 2-pin connectorQ0821 4805921T02 Transistor, dualQ0822 4880048M01 Transistor, NPNQ0823 4805921T02 Transistor, dualQ0841 4880048M01 Transistor, NPNQ0843 4880048M01 Transistor, NPNQ0877 4813824A10 Transistor, NPNQ0878 4813824A10 Transistor, NPNQ0879 4813824A10 Transistor, NPNQ0933 4813824A08 Transistor, PNPQ0934 4813824A10 Transistor, NPNR0810 0662057A76 13K R0811 0662057A90 51K R0812 0662057A09 22 R0813 0662057A01 10R0814 0662057A35 270 R0815 0662057A76 13K R0816 0662057A90 51K R0817 0662057A09 22R0821 0662057A73 10K R0822 0662057A82 24K R0823 1805911V01 Volume Pot R0824 0662057A65 4K R0825 0662057A49 1K R0831 0662057B22 1M R0832 0662057A57 2K R0833 0662057A89 47K R0834 0662057A35 270R0835 0662057A25 100R0836 0662057A73 10K R0837 0662057A85 33K R0838 0662057A73 10K R0841 0662057A73 10K R0842 0662057A89 47K R0843 0662057A73 10K R0844 0662057A73 10K R0845 0662057A65 4K
ReferenceDesignator
Motorola Part No. Description
R0847 0662057A93R0849 0662057A89R0852* 0662057A89R0853** 0662057A89R0855 0662057A89R0856 0662057A89R0857** 0662057A89R0858* 0662057A89R0859 0662057A89R0860 0662057A97R0861 0662057A97R0862 0662057A97R0863 0662057A65R0864 0662057A65R0865 0662057A65R0877 0660076A35R0878 0660076A35R0879 0660076A35R0901 0662057A90R0902 0662057A76R0903 0662057A81R0904 0662057A88R0906 0662057A90R0907 0662057A76R0908 0662057A81R0909* 0662057A88R0935 0662057A73R0936 0662057A73R0937 0660076A01R0941 0662057A73R0942 0662057A85R0943 0662057A65R0944 0662057A97R0945 0662057A73R0946 0662057A73R0947 0660076A01R0948 0660076A01R0972 0662057B47R0973 0662057B24R0974 0662057B28R0975 0662057G29R0976 0662057G13U0831 5113802A24U0832 5113815A02U0833 4886061B01U0834 5185963A15
U0931 5113818A03U0971 5186158B01VR0812 4813830A15VR0816 4805656W09
ReferenceDesignator
MotorolaPart No.
4-16
This page intentionally left blank
4-17
UART_RX
UART_TX
VSTBY
VS_GAINSEL
VS_INT
VS_RAC
VOICE_STORAGE
5VD
FLAT_RX_SND
RX_AUD_RTN
SP
I(0:
10)
VS_AUDSEL
VS_INT VS_MICVS_RAC
GP
4_IN
_OU
T_A
CC
8
GP
5_IN
_AC
C9
GP
6_IN
_AC
C10
GP
7_IN
_OU
T_A
CC
12
GP
8_IN
_OU
T_A
CC
14
GP
IO(0
:13)
LOCK
ON_OFF_CONTROL
OP
T_P
TT
RDY
RE
SE
T
RSSI RX_ADAPT
SCI_TX
SP
I(0:
10)
TEMPSENSE
CONTROLLER5VD
BATTERY_VOLTAGEBOOT_CNTRL
BU
S+
CN
TLR
_AU
DIO
(0:7
)
CNTLVLTG
EXT_BD_REQ
FLT_A+
GP
1_IN
_AC
C3
GP
2_O
UT
_AC
C4
GP
3_IN
_AC
C6
PASUPVLTGFLT_A+
UART_TX
VSTBY
RDY
OPT_PTT
CH_ACT
URX_SND
VS_GAINSEL
MOSBIAS_3
INT_SWB+
EXT_MIC
IN_5V_RF_REG
SCI_TX
VS_MIC
5VD9V3
EXT_SWB+
FLAT_TX_RTN
RX_AUD_RTNDISCAUDIO
INT_MIC
5V_RF
RX_FLAT_FILTERED_AUDIOHANDSET_AUDIOSPKR+SPKR-
EMERGENCY_CONTROLIGNITION_CONTROLDC_POWER_ONON_OFF_CONTROL
BATTERY_VOLTAGE
VS_AUDSEL
TEMPSENSECNTLVLTG
UART_RX
VS_RACVS_INT
RSSILOCK
RX_ADAPT
NOISE_BLNKRPA_PWR_SETMOSBIAS_2
MODIN
TX_AUD_SNDFLAT_RX_SND
16_8MHZ
TX_AUD_RTN
CNTRL_AUDIO(0:7)GPIO(0:13)SPI(0:10)
BUS+RESET
GP8GP7GP6GP5GP4GP3GP2GP1
EXP_BD_REQ
BOOT_CNTRL
ZWG0130228
Figure 4-11. Complete Controller Schematic Diagram
FLT_A+
IGNITION_CONTROL
INT_SWB+
IN_5V_RF_REG
ON_OFF_CONTROL
PASUPVLTG
RESET
VSTBY
TX_AUD_RTN
TX_AUD_SND
UART_RX
UART_TX
URX_SND
VS_AUDSELVS_GAINSEL VS_INT
VS_MIC
VS_RAC
SUPPLY_VOLTAGE
5VD
9V3
BATTERY_VOLTAGE
DC_POWER_ON
EMERGENCY_CONTROL
EXT_SWB+
NOISE_BLNKR
ON_OFF_CONTROL
OP
T_P
TT
PASUPVLTG
PA_PWR_SET
RDY
RE
SE
T
RSSI
RX_ADAPT
RX_AUD_RTN
RX_FLAT_FILTERED_AUDIO
SCI_TX
SP
I(0:
10)
SPKR+SPKR-
TEMPSENSE
GP
2_O
UT
_AC
C4
GP
3_IN
_AC
C6
GP
4_IN
_OU
T_A
CC
8G
P5_
IN_A
CC
9
GP
6_IN
_AC
C10
GP
7_IN
_OU
T_A
CC
12
GP
8_IN
_OU
T_A
CC
14
HANDSET_AUDIO
IGNITION_CONTROL
INT_MIC
INT_SWB+
IN_5V_RF_REG
LOCKMODIN
MOSBIAS_2MOSBIAS_3
5VD 5V_RF
9V3 BOOT_CNTRL
BU
S+
CH_ACT
CNTLVLTG
DISCAUDIO
EMERGENCY_CONTROL
EXP_BD_REQ
EXT_MIC
EXT_SWB+
FLAT_RX_SND
FLAT_TX_RTN
FLT_A+
GP
1_IN
_AC
C3
IO
16_8MHZ
TX_AUD_SND
URX_SND
VS_AUDSEL
VS_MIC
FLT_A+
GP
IO(0
:13)
HANDSET_AUDIO
INT_MIC
INT_SWB+
MODIN
MOSBIAS_2
MOSBIAS_3
NOISE_BLNKRPA_PWR_SET
RX_AUD_RTN
RX_FLAT_FILTERED_AUDIOS
PI(
0:10
)
SPKR+SPKR-
TX_AUD_RTN
PASUPVLTGFLT_A+
UART_TX
AUDIO
16_8MHZ
5VD5V_RF
9V3
CH_ACT
CN
TLR
_AU
DIO
(0:7
)
DC_POWER_ON
DISCAUDIO
EXT_MIC
FLAT_RX_SND
FLAT_TX_RTN
BATTERY_VOLTAGE
VSTBY
RDY
OPT_PTT
CH_ACT
URX_SND
VS_GAINSEL
MOSBIAS_3
INT_SWB+
EXT_MIC
IN_5V_RF_REG
SCI_TX
VS_MIC
5VD9V3
EXT_SWB+
TX_AUD_RTNFLAT_TX_RTN
RX_AUD_RTNDISCAUDIO
INT_MIC
5V_RF
RX_FLAT_FILTERED_AUDIOHANDSET_AUDIO
SPKR+SPKR-
EMERGENCY_CONTROLIGNITION_CONTROL
DC_POWER_ONON_OFF_CONTROL
TEMPSENSECNTLVLTG
UART_RX
VS_RACVS_INT
RSSILOCK
RX_ADAPT
NOISE_BLNKRPA_PWR_SET
MOSBIAS_2
MODIN
TX_AUD_SNDFLAT_RX_SND
16_8MHZ
CNTRL_AUDIO(0:7)
GPIO(0:13)
SPI(0:10)
BUS+
RESET
GP8GP7GP6GP5
GP4GP3GP2GP1
EXP_BD_REQ
BOOT_CNTRL
VS_AUDSEL
4-18
GP6_INGP4_IN
GP3_IN
GP4_IN
GP1_IN
GP7_IN
HC138_A0HC138_A1HC138_A2
GP5_IN
GP6_IN
GP8_OUT
HC138_A1
H/W-Version & Memory size
GP4_OUT
GP7_OUT
)
GP2_OUT
GP8_OUT
HC138_A2
GP7_IN
GP8_IN
GP8_IN
GP3_INPE6
HC138_A0
GP5_IN
10
GP4_OUTGP7_OUT
Q0177
7
47KR0186
1000pFC0107
Q0181
C0106100pFNU
10
0.1uF
Y50
Y69
Y77
C0141
EN_CS3 5
GND8
VCC16
Y05
Y14
Y23
Y32Y41
A0 1
A1 2
A2 3
EN_CS1 6
EN_CS2 4
U0141MC74HC138A
9
47KR0178
8
11
4.7K
R0183
3
1213
0
47K
R0182
R0176
5
30K
12
R0175
10K
13
10
1
3
7
R011410K
R01814.7K
4.7K
R0185
5
9
2
4.7KR0177
Q0183
R0179
47K
D0179
4
10K
47KR0184
R0174
R01082.2K
SeeNOTE
100KR0105
4
2
6
Q0173
0SeeNOTE
R01068
10KR0170
Q0185
GP3_IN_ACC6
GPIO(0:13)
GPIO(0:13)
U0101_46U0101_47
VS_RAC
5VD
VS_INT
GP4_IN_OUT_ACC8IRQ
D
5VD
RESET
RESET
5VD
5VD
GP5_IN_ACC9
TTERY_VOLTAGE
5VD
FLT_A+ GP2_OUT_ACC4
MPSENSE
VS_GAINSEL
T_BD_REQ
RSSI
5VD
LOCK
GP7_IN_OUT_ACC12
GP8_IN_OUT_ACC14
5VD
5VD
5VD
GP6_IN_ACC10
5VD
TBY
TLVLTG
ZWG0130229-A
NOTE
R0105 R0106 R0128 R0109 U0125
MDC/Sel5 Used NU NU Used NU
MPT NU Used Used NU Used
Q0171
4.7K
R01715VD10K
R0172
GP1_IN6
5VD
GP1_IN_ACC3
R01734.7K
Figu
16Kx8bit
HS
IO
VS_CSEXP1_CS
CLK
VO
X
LSIO
ON_OFF_SENSE
EEPROM
OPT_CS
MIS
O
CLK
F12
00
CH
AC
TS
Q_D
ET
512kx8bit
(EXT_BD_PTT & DATA_PTT
EE_CS
RAM
FLA
SH
RO
M
GP4_OUTGP7_OUT
LVZIF_CSREF_CSEXP2_CS
MIS
O
SY
N
LSIO
32kx8bit
EE
_CS
DA
TA
CS
X
HS
IO
MICROPROCESSOR
DA
TA
R0121100K
0NU
3
5
R0116
8
43
C0123100pFNU
15 IO416 IO517 IO618 IO719 IO8
28VCC
24A9
20EN_CS 22EN_OE 27EN_WE
GND14
11 IO112 IO213 IO3
1A14
8A27A36A4
A5 54A63A7
25A8U0122
10A09A1
A10 2123A112A12
26A13
32
5
Q0110
27KNU
0
2
R0125
100pFNU
C0104
10MEG
9
R0131
0
7
C0111
100pFNU
1
11111
XTL0 7
XTL112
0
RS013
RS114RTS
R_W*28
10TD
VSS
VDD15
D1 19D0 18
DCD16
DSR17
DTR 11
RC5
RD12
CS13
CTS9
D7 25D6 24D5 23D4 22D3 21D2 20
U0125
CLK
CS02
56
6
3
R010110K
5
8
R010747KNU
1
6
18
TP0102
0.1uFC0121
0.1uF
TP01031
C0122
27KNU
98
R0126
6
6
123
0
1
1
22pF
4
C0131
D01015.6V
VR0151
75
D0151
.01uF
6
11
12
C0151
4
0
7
6
R0128See NOTE
24KR0152
R0132330K
7
SI 5
SO2
VCC8
VSS4
WP 3
2
X25128_2.7V
CLK6
CS 1
HOLD
24K
013
U0111
R0151
1211
10
100pF
0
C0101
1
10
1
7
7
TP0151
10KR0115
0
3
R0111
R011010KNU
C0112
0.1uF
5
R010410K
22pF
2
C0132
10K
6
R0113
0
1
7
TP0101
4
11
5
14
4
9
4
1
10
810
16
NCNC1
OUT IN
R0109
Y0131
38.40KHz
XTAL
R0112
0NU
18
4.7K
4
R0102
14
C0103100pFNU
6
765
8
15
15
9
4
1312
1413
17
40V
SS
L87
VS
SR
XF
C93
48XIRQ
91X
TA
L
94RESET
12V
DD
39V
DD
L88
VD
DR
92V
DD
SY
N
69V
RH
68V
RL
13V
SS
71PJ0_CSGP372PJ1_CSGP473PJ274PJ375PJ476PJ577PJ678PJ7
56P
I055
PI1
54P
I253
PI3
52P
I451
PI5
50P
I649
PI7
47 PH0_PW146 PH1_PW245 PH2_PW344 PH3_PW443 PH4_CSIO42 PH5_CSGP141 PH6_CSGP238 PH7_CSPROG
6 PG0_XA1316 PG1_XA1420 PG2_XA1519 PG3_XA1617 PG4_XA1718 PG5_XA185 PG6_AS
4PG7_R_W
28P
F1_
AD
DR
127
PF
2_A
DD
R2
26P
F3_
AD
DR
325
PF
4_A
DD
R4
24P
F5_
AD
DR
523
PF
6_A
DD
R6
22P
F7_
AD
DR
7
29P
FO
_AD
DR
0
PE0_AN0 67PE1_AN1 66PE2_AN2 65PE3_AN3 64PE4_AN4 63
PE5_AN5 62PE6_AN6 61PE7_AN7 60
37 PC7_DATA7
97P
D0_
RX
D98
PD
1_T
XD
99P
D2_
MIS
O10
0P
D3_
MO
SI
1P
D4_
SC
K2
PD
5_S
SP
D6_
LVIN
3
14P
BO
_AD
DR
8
30 PC0_DATA031 PC1_DATA132 PC2_DATA233 PC3_DATA334 PC4_DATA435 PC5_DATA536 PC6_DATA6
86P
A7_
PA
1_O
C1
10P
B1_
AD
DR
911
PB
2_A
DD
R10
9P
B3_
AD
DR
1121
PB
4_A
DD
R12
15P
B5_
AD
DR
138
PB
6_A
DD
R14
7P
B7_
AD
DR
15
57MODB_VSTBY
79P
A0_
IC3
80P
A1_
IC2
81P
A2_
IC1
82P
A3_
IC4_
OC
5_O
C1
83P
A4_
OC
4_O
C1
84P
A5_
OC
3_O
C1
85P
A6_
OC
2_O
C1
59A
VD
D
70A
VS
S
89ECLK
90E
XT
AL
96IRQLVO
UT
95
58MODA_LIR
U0101MC68HC11FL0
Q0151
7
2
0
32
10
C0105
NU100pF
3
21
26IO5 27IO6 28IO7 29
8VCC
109
1
30
EN_OE32
EN_WE7
24GND
21IO0IO1 22IO2 23IO3 25IO4
18A317A416
15 A514 A6
A713A83A92
EN_CE
1A1212
4 A13A145
11 A15A1610A176
A189
A2
A020A119
A1031
A11
16
3
U0121
1
1
100pFNU
C0102
7
4
2
17
5VD
ON_OFF_CONTROL
R_W
RAM_CS
SCI_TX
BUS+
5
3
5VD
SPI(0:10)SPI(0:10) SPI(0:10) SPI(0:10) SPI(0:10)
CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7)CNTLR_AUDIO(0:7)CNTLR_AUDIO(0:7)
FROM_U0101_47FROM_U0101_46
UART_CS
FROM_FROM_
IRQ
5VBOOT_CNTRL
FLASH_CE
FLASH_OER_W
5VD
5VD
ECLK
R_W5VD
ADDR_BUS(0:18)
UART_RXUART_TX
5VD
5VD
OPT_PTT
BA
TE
RAM_CS
5VD
EX
RX_ADAPT
5VD
5VD5VD
FLT_A+ FLT_A+
FLASH_OE
UART_CS
DATA_BUS(0:7)
NC
_XT
AL
ECLK
NC
_PB
6_A
DD
R14
NC
_PB
7_A
DD
R15
RDY
ON_OFF_CONTROL
NC_PH5_CSGP1
FLASH_CE
R_W
VS
5VD
CN
See NOTE
8
0 0
26
5VD
0NU
R0124
0NU
R0127
0.1uFNU
C0125
5VD
3.9K
R0117
1
27
UA
RT
1
23
4
5VDC (0VDC during On/Off pressed and during head request)
5VDC (0VDC during boot mode)
re 4-12. Controller Control Schematic Diagram
4-19
SPEAKER+BUS+
1
DIG_IN_OUT_8RSSI
7
4
1817
13 15 17
64
DIG_IN_5 WITH WAKEUP (EMERGENCY)
13
9 11
DIG_IN_OUT_4 = Sel5/MDC UART_TX = MPT
9
DIG_IN_3 = Sel5/MDC UART_RX = MPT
20
1 3
15
REAR VIEW
PCB
2
5
14
NC
16
FLAT_TX_AUDIO
1920
ACCESSORY
910 DIG_IN_6 WITH WAKEUP (IGNITION)
FLAT/FILTERED_RX_AUDIODIG_IN_OUT_7
DIG_OUT2 (EXTERNAL_ALARM)
SPEAKER-
11
345
8
SWB+
16 18
6
16
6
GROUND
5
3
TO/FROM RF
7
NC
N.C.
21
GND
18
DIG_IN1
20-PIN CONNECTOR
J0501
2
151413
10
8
719
17BOOT_CNTRL
EXT_MIC_AUDIO
12
N.C.
1412108
11
12
10R0467
PA_PWR_SET
J0501-17J0501-5
NOISE_BLNKR_CNTLR_1
C04
9647
0pF
16_8MHZ_CNTLR_1
470p
FC
0497
MODIN
470p
FC
0492
470p
FC
0495
C04
7047
0pF
J0501-20
MOSBIAS_2_CNTLR_1
C04
4147
0pF
NU
J0501-1
J0501-15
NOISE_BLNKR
J0501-10J0501-11
C04
93
J0501-12
470p
F
DISCAUDIO_CNTLR_1
J0501-16
MOSBIAS_3_CNTLR_1
J0501-8
J0501-2J0501-19
470p
FC
0494
MODIN_CNTLR_1
J0501-13
J0501-3
C04
98
NU
470p
F
16_8MHZ
J0501-7
J0501-6
J0501-4J0501-18
DISCAUDIO
MOSBIAS_2
MOSBIAS_3
PA_PWR_SET_1_CNTLR_1
5V
C04
9147
0pF
J0501-14
5V_CNTLR_1
J0501-9
DISCAUDIOHANDSET_AUDIOHANDSET_AUDIO
UART_TXUART_RX
RSSI RSSI
UART_TX UART_TX
UART_RXUART_RX
RDYRDY
OPT_PTT
OPT_PTTOPT_PTT
INT_MIC INT_MIC
SPKR+SPKR+DISCAUDIO
EXP_BD_REQEXP_BD_REQEXP_BD_PTT EXP_BD_PTT
CH_ACT CH_ACTOPT_CSRDY
GP4_IN_OUT_ACC8
SPI_CLK
EXP_BD_PTT
DISCAUDIO
MOSBIAS_3
VS_MIC VS_MICFLAT_TX_RTN
DISCAUDIO
16_8MHZ
5V_RF
MODIN
NOISE_BLNKR
MOSBIAS_2
PA_PWR_SET
FLAT_TX_RTN FLAT_TX_RTN
GP4_IN_OUT_ACC8 GP4_IN_OUT_ACC8
CH_ACT
SPI_DATASPI_MISO
EXP_BD_REQEXP1_CS
BUS+ BUS+RESETRESET
ON_OFF_CONTROL ON_OFF_CONTROLEXT_MICEXT_MIC
SPKR-SPKR-
5VD5VDFLT_A+FLT_A+
ZWG0130230 A
INT_SWB_CNTLR_1INT_SWBINT_SWB+
C04
9947
0pF
Pin 1 to 16 used for standard accessoriesPin 17 to 20 for special use
Figure 4-13. Controller I/O Schematic Diagram
3231
11
7
17
12
10
VS_CS
INT_MIC
26
Gnd
RST*
VS_MIC
DB1
36
3938
30
33
37
DB2
Key_Intrp
9V3
LED_EN
DB0
DATA
Tx_Aud_SndTx_Aud_Rtn
PTT
Vddd
25
6
J0551
9
32
1
NC
9
78
NC
NC
101112
4
DATA
CLK
8
NC
GROUND
Rx_Aud_Rtn
Rdy/Req
EXPANSION BOARD18-PIN CONNECTOR
DATA
SCI_TX
EXP_BD_PTTGND
FAST_SQDISCAUDIO
INTERNAL OPTION BOARD
23
21
1920
16151413
5
2829
12-PIN CONNECTOR
DB7
NC
24NC
NC
DB6
5VDHANSET_AUDIO
CONTROL HEAD
BUS+
VS_GAINSELOFF_BATT_DATA_OUT
FLT_A+
Key_Col
TO/FROM RF
VS_RAC
NCNC
NC
GND
CSX
RX_ADAPT
CLKMISO
4
VS_CS
Flat_Tx_RtnCLK
SrD_Rtn
EXP1_CS
CLK
MISO
EXP_BD_PTT
DB3
J0401
SrD_Snd
Rx_Aud_SndON
VS_INT
123
56 OPT_CS
RDYOPT_PTT
NCNC
FLAT_TX_RTN
ON_OFF_CONTROL
J0451
A0
Key_Row
VS_AUDSEL
GPIOEXP1_CS
EXP_BD_REQ
INT_EXT_Vdd
R/W*
Opt_Bd_En
CS*
27
22
18
40-PINS CONNECTOR
SPEAKER-SPEAKER+
GROUND
UART_TXUART_RX
Det_Aud_Snd
40
OPT_CS
DB4DB5
SCK_Snd
3534
DATA
470p
FC
0510
J0451-2
J0401-10
J0401-7
470p
F
J0551-19
C05
01
C04
26
.01u
F
J0401-2J0401-1
470p
FN
UC04
03
C04
02N
U
C04
57
NU
470p
F
NU
470p
F
470p
F
C04
58
C04
59
NU
470p
F
J0551-42
J0551-41
J0551-1
VR050933V
C05
2447
0pF
NU
470p
F
NU
C04
54
C05
2847
0pF
NU
C0428
9V3
R0410
82pF
0NU
VR05375.6V
C04
7347
0pF
470p
FC
0474
C04
7647
0pF
8
NU470pF
C0558
470pF
CSX_CNTLR_2
CSXC0482
C0410NU
470pF
J0551-5
470p
F
NU
470p
F
NU
C05
23
470p
F
NU
C05
31
C05
30
VR050520V
C04
8747
0pF
33VVR0510
C04
4947
0pF
J0401-3
PASUPVLTG
LOCK
J0551-37
82pF
NU
DATA
C05
39
J0551-32J0551-33
J0551-28
J0451-16
9
RSSI_CNTLR_1
NUC0411
470pF
9V3
J0551-27
VR0521 VR0522
5.6V 5.6V
NU220R0522
NU220R0521
RSSI
NU390nHL0481
10
DATA
R0407
C05
2747
0pF
NU
C05
2647
0pF
NU
470p
F
NU
470p
F
C05
40
C04
23
470pF
C0431
470p
FC
0422
470p
F
NU
C05410.47uF
C05
25
J0551-24
R0525100K
9V3_CNTLR_1
NU
9
C05
3547
0pF
VR050120V
C04
72
C04
7147
0pF
470p
FR046810
J0551-6J0551-7
220R0524
220R0523
14VVR0541
CNTLVLTG_CNTLR_1
NU47K
R0542
C04
67
NU
470p
F
J0401-12
J0451-10
C05
0947
0pF
J0451-17
J0551-34
R0409 10
J0551-8J0551-9
C05
15
J0551-10
470p
F
R0535
J0451-14
1K
C04
56
C05
20
CLK
NU
470p
F
C04
07
NU
470p
F
470p
FN
U
C04
4847
0pF
C04
4747
0pF
J0451-18
9
8
C04
8647
0pF
C0429
470pF
C04
53
NU
470p
F
NU
470p
FC
0455
470p
F
NU
C04
68
J0451-9
C04
8547
0pF
NU
C04
6247
0pF
LOCK_CNTLR_1
J0551-30
J0551-35
C05
0547
0pF
J0551-38
C05
3847
0pF
NU
C0408NU
82pF
470p
F
NU
C05
34
C05
3347
0pF
NU
C05
3247
0pF
NU
C04
6447
0pF
NU
J0551-11
J0551-2
J0551-16
0.1uFC0593
NU0.1uF
C0554
0R0533
470p
F
NU
C05
21C
0488
470p
FC
0508
470p
F
C05
11
C05
12
470p
F
CLK
470p
F
2
470p
FC
0477
C04
4247
0pF
NU
NU470pF
47K
CSX
C0560
R0529
J0551-21
J0401-11
J0451-5
J0551-3
C0576
NU470pF
PASUPVLTG_CNTRL_1
VR050320V
J0401-4
R059210
C05910.1uF
9V3_CNTLR_2
J0451-6
TEMPSENSE_CNTLR_1
470p
F
NU
C04
43
C04
63
NU
470p
F
J0551-14
J0551-4
VR0504
470p
FC
0504
33V
NU
470p
FC
0519
C04
2747
0pF
J0451-3
C05
16.0
1uF
J0451-12
C05
2247
0pF
NU
NU470pF
C0575
C0559
RESET
TEMPSENSE
NU470pF
C05
3747
0pF
NU
470p
FC
0513
470p
FC
0478
0R0482
R0481 0
8 CLK_CNTLR_2
C04
4547
0pF
C04
4647
0pF
J0451-13
J0551-26
220R0537
470p
FC
0514
J0551-36
NU
470p
F
NU
470p
F
C04
44
C04
61
0R0527 0R0528
J0551-15
82pF
C05
17
J0551-25
J0401-8
J0401-5
J0551-31
470p
FNU
C05
36
470p
FC
0484
470p
F
NU
C04
66
J0551-18
J0551-23
J0551-17
470p
F
NU
C04
60
27K R0541
C0430
470pF
82pF
J0401-6
C04
21
J0451-1
0.1uFC0592
C04
06N
U47
0pF
1
10
J0551-22
RESET_CNTLR_1
0R0530
R0401220
CLK_CNTLR_1
C05
1847
0pF
NUC04
01 82pF
470p
FC
0502
J0551-13
J0451-7
R0591
J0451-8
100K
24K
R0511
CSX_CNTLR_13
C04
8347
0pF
J0551-40
DATA_CNTLR_2
J0551-20
C0409
470pF
J0451-11
NU
4.7K
4.7K
R0539
R0510
DATA_CNTLR_1
J0451-4
J0451-15
470p
FC
0506
R0538220
J0551-39
J0551-12
CNTLVLTG
C0542
TP04811
47uF
J0551-29
15KR0512
C05
03
390nH NU
470p
F
J0401-9
7
L0482
560
R0531
C04
51
NUNU
470p
F
470p
F
HANDSET_AUDIO
UART_RXUART_TX
GP6_IN_ACC10
BOOT_CNTRL
5VD
C04
52
FLT_A+
BUS+
5VD
RSSI
EXT_SWB+
UART_TXUART_RX
GP4_IN_OUT_ACC8GP3_IN_ACC6
RDY
OPT_PTT
INT_MIC
GP7_IN_OUT_ACC12
5VD
GP4_IN_OUT_ACC8EXP1_CS
EXP_BD_REQEXP_BD_PTT
CH_ACTDISCAUDIO
FLT_A+
SCI_TX
SPKR+
GP1_IN_ACC3
RX_FLAT_FILTERED_AUDIO
EMERGENCY_CONTROLGP5_IN_ACC9
SPKR+SPKR-
ON_OFF_CONTROL
EXP_BD_PTT
SPI(0:10)
RX_ADAPT
EXT_MICSPKR-
FLAT_TX_RTN
EXP1_CS
9V3
GP8_IN_OUT_ACC14
FLT_A+
FLAT_TX_RTN
RESET
RESET
PASUPVLTG
BUS+
GP2_OUT_ACC4
9V3
TEMPSENSE
CNTLVLTG
RSSI
LOCK
SPI_DATA
SPI_CLK
SPI_MISO
VS_CS
OPT_CS
OPT_CS
SPI_DATA
TX_AUD_RTN
VS_CSVS_MIC
SPI_CLK
FLAT_RX_SNDRX_AUD_RTN
URX_SND
TX_AUD_SND
VS_INT
5VDVS_AUDSEL
VS_GAINSELSPI_MISO
VS_RAC
IGNITION_CONTROL
FLT_A+
NOTE
VR0521 R0523 R0527 VR0522 R0524 R0528
MDC/Sel5 NU NU Used NU NU Used
MPT Used Used NU Used Used NU
See NOTESee NOTE
See NOTESee NOTE
See NOTESee NOTE
100R0408
Note
Note: Fuse is part of PCBIn case fuse is blowen, replaceit with R0410 P/N 0662057B47
4-20
C0262
82pF
NU
1000pFC0276
R0262
100K
74
11MC3403U0211-2
6
5
INV
M_SS
NINV
4OUT1
OUT2 6RR
VCC
70271
GND12 5
GND2
F75
C0271.01uF
E027157R01
57R011000pFE0272C0277
100K
R0253
34
MC3403
9
10
84
11
3
U0211-3
C0253
100pF
NU
9V3
9V3
MODIN
16_8MHZ
SPKR-
SPKR+
VS_AUDSEL
SPI(0:10)GPIO(0:13)
CNTLR_AUDIO(0:7)
AG
AG
HANDSET_AUDIO
RX_FLAT_FILTERED_AUDIO
ZWG0130231-A
PA
t)
630mV RX Filtered330mV Flat
Figu
SY
N
F12
00
CLK
GP
2_O
UT
CS
X
DA
TA
LSIO
VO
X
SQ
_DE
T
HS
IO
CH
_AC
T
R025147K
0.1uF
C0261
C0204
0.1uF
C0235
C0231
.022uF
4.7uF
C02510.1uF
NU
R0275
5
10K
10uFC0212
R0206
10K
24K
2
R0273
NU0.22uF
C0224100pF
C0233
R0208
0.1uF
2.2K
C0222
100pFC0243
2200pFC0203
NU
0.1uF
C0227
6
R027615K
MC3403
2
31
4
11 U0211-1
24K
R0221
R0269470
NU0.1uF
C02650.1uF
C0266
4
Q0271
9
8
13
U
.033uF
C0273
C0236
3300pF0.1uFC0245
C0232
9
0.1uF
0
NU
R0242
C02420.1uF
0.1uFC0241
C0267.01uF 47K
10K
R0267
R0268
R026524K
10uFC0201
NU
2200pF
D0201
NU
C0205
10KR0205
R0252
56K
47uC02
7
560
R0202
TP0221
1
C02521uF
1
7
0.1uFC0272
0.1uF
R0223
C0226
30K
0.1uF
C0221
.01uFC0246
3
10K
R0261
R02072.2K
R022224K
0.1uFC0244
C02540.1uF
C02550.1uF
7.5K
R0212
R0211
Y14
Z
5 Z0
Z13
7.5K
GND
VCC
7VEE
14X
12 X013
X1
15Y
2 Y0
1
MC14053B
A 11
10B
9C
6EN
8
45V
DD
RC
27VDDSYN
7 VOX
U0251
36TXRTN
44T
XS
ND
10 UIO39
UR
XO
UT
1 VDDA
32VDDCP
33VDDD
11 VDDDAC
46M
ICIN
T
40M
OD
26NC
8 PLCAP
25
PLC
AP
2
17S
QD
ET
9 SQIN 28SYN
31GNDD 30GNDD0
47G
ND
RC
23G
ND
SY
N
19H
SIO
LCA
P2418
LSIO
48M
ICE
XT
29F1200
15G
CB
0
14G
CB
1
13G
CB
235GCB3
GC
B4
3738G
CB
5
3 GNDA
21C
LK
34CLK168
20C
SX
6 DACG
5 DACRDACU4
22D
AT
A
2 DISC
12AGCCAP
41A
UD
IO
AU
XR
X43 42
AU
XT
X
16C
HA
CT
63A53
U0221
1
TP0222
R026624KNU
MC340U0211-
13
1214
4
11
MC340
NU0.1uF
560
8
C0211
R0204
100R0201
R0224
11
8.2K
47KR0241
NU10KR0274
C0223
0.1uF
0.1uFC0234
NU0.1uF
C0274
0.1uFC0225
INT_SWB+
CH_ACT
VAG
9V3 9V3
9V3
VS_MIC
MOSBIAS_3
VAG
EXT_MIC
TX_AUD_SND
5V_RF
5V_RF
5VD5VD
5V_RF
5V_RF5V_RF
5V_RF
5V_RF
TX_AUD_RTN
RX_AUD_RTN
INT_MIC
URX_SND
FLAT_RX_SND
DC_POWER_ON
FLT_A+
ASFIC CMP
5VD
5VD
DISCAUDIO
PA_PWR_SET
MOSBIAS_2
9V3
FLAT_TX_RTN
NOISE_BLNKR
V
V
2.2uFNU
C0237
R02248.2KNU
R02261M
R02271M
4.6VDC
80mV RMS
80mV RMS
5VDC (0VDC during radio off)
13VDC unmuted5VDC muted
300mV RMS
200mV RMS
145mV RMS @25kHz72mV RMS @12.5kHz 5VDC RX Filtered
Audio (0V DC Fla
0 VDC
re 4-14. Controller Audio Schematic Diagram
4-21
C062247uF
0.1uFC0655
33uFC0652
D0621
NU470pFC0621
10uFC0654
5.6VVR0621
MC78M05
2
GND
1IN
3OUT
5.6V
U0651
NU
VR0671
30KR0671
10KR0672 C0671
0.1uF
NU
NC13
NC25
NC36
NC478NC5
RESET 1
U0653
U0652MC33064
GN
D
4
INPUT2
24K
R0621
EXT_SWB+
RESET
9V3
5VD
VSTBY
PASUPVLTG
INT_SWB+
BATTERY_VOLTAGE
FLT_A+
DWG NO
ZWG0130232-A
Q0681
IN_5V_RF_REG
68KR0682
06718K
0.1uFC0681
5VDC
6VDC
5VDC
5VDC (0VDC during reset)
Figure 4-15. Controller Supply Voltage Schematic Diagram
C0663
C0662
0.1uF
.01uF
10
R0652
Q0641
C061122uF
J0601-1
150KR0662
1.2KR0643
R061156K
0.1uFC0645
33uFC0644R0641C0641
470pF 10K
J0601-2
C06120.1uF
Q0661
U0611
ADJ1
GND13
GND26
2 ON_OFFVIN
4VOUT
5
LM2941
D0661
1ADJ
GND13
GND26
ON_OFF2
4VIN
5VOUT
LM2941U0641
Q0662
R0651
57R01
10
R0642
E0631
J0601-3
7.5K
C0601
C0603
470pF
10uF
R0661
1K C066147uF
D0651
0.1uFNU
C0651
Q0663
D0660
4.7K
24V
R0612
VR0601
DC_POWER_ON
IGNITION_CONTROL
EMERGENCY_CONTROL
ON_OFF_CONTROL
R1
0V (13,8VDC when radio off)
4-22
Tabl
CiR
C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0
F F F F F F F F FF e, Schottkye, Dual e, Dual e, Dual e, Dual e, Dual e, Dual te Beadte Beadte Beadector, Flex, 12-pinector, Flex, Side Entryector, SMD, 20-Pinector, Zif, Horizontal ower Connector , Dalington , Dalington1/16W 5%1/16W 5%
Description
R0108 0662057A57 2KR0109 0662057B47 0 R0111 0662057B47 0 R0113 0662057A73 10K R0114 0662057A73 10K R0115 0662057A73 10K R0117 0662057A63 3K R0121 0662057A97 100K R0131 0662057B46 10MR0132 0662057B10 330K R0151 0662057A82 24K R0152 0662057A82 24K R0170 0662057A73 10K R0171 0662057A65 4K R0172 0662057A73 10K R0173 0662057A65 4K R0174 0662057A73 10K R0175 0662057A73 10K R0176 0662057A84 30K R0177 0662057A65 4K R0178 0662057A89 47K R0179 0662057A89 47K R0181 0662057A65 4K R0182 0662057A89 47K R0183 0662057A65 4KR0184 0662057A89 47K R0185 0662057A65 4KR0186 0662057A89 47K R0201 0662057A25 100 R0202 0662057A43 560 R0204 0662057A43 560 R0205 0662057A73 10K R0206 0662057A73 10K R0207 0662057A57 2KR0208 0662057A57 2KR0211 0660076E70 7.5KR0212 0660076E70 7.5KR0221 0662057A82 24K R0222 0662057A82 24K R0223 0662057A84 30K R0224 0662057A71 8KR0226 0662057B22 1M R0227 0662057B22 1M R0241 0662057A89 47K R0242 0662057B47 0 R0251 0662057A89 47K R0252 0662057A91 56K R0253 0662057A97 100K R0261 0662057A73 10K R0262 0662057A97 100K R0265 0662057A82 24K
CircuitRef
MotorolaPart No. Description
e 4-3. Controller Parts List
rcuitef
MotorolaPart No. Description
101 2113740F51 100pF107 2113741F25 1nF112 2113743E20 100nF121 2113743E20 100nF 122 2113743E20 100nF 131 2113740F35 22pF 132 2113740F35 22pF141 2113743E20 100nF151 2113741F49 10nF201 2311049A57 10uF 204 2113743E20 100nF 212 2311049A57 10uF 221 2113743E20 100nF222 2113743E20 100nF 223 2113743E20 100nF224 2113740F51 100pF225 2113743E20 100nF 226 2113743E20 100nF 227 2113743E20 100nF231 2113743B29 1UF 232 2113743E20 100nF 234 2113743E20 100nF235 2113743E07 22nF 236 2113743E10 33nF 241 2113743E20 100nF243 2113740F51 100pF 244 2113743E20 100nF 245 2113743E20 100nF246 2113741F49 10nF 252 2311049A07 1uF 254 2113743E20 100nF 255 2113743E20 100nF261 2113743E20 100nF 262 2113740F49 82pF265 2113743E20 100nF 267 2113741F49 10nF 271 2113741F49 10nF 272 2113743E20 100nF 273 2113741F37 3.3nF 275 2311049A99 47uF 276 2113741F25 1nF 277 2113741F25 1nF421 2113743N48 82.0pF 422 2113741F17 470pF423 2113741F17 470pF426 2113743L09 470pF 427 2113743L09 470pF428 2113743N48 82pF 429 2113743L09 470pF
C0430 2113741F17 470pF C0431 2113741F17 470pF C0445 2113743L09 470pF C0446 2113743L09 470pF C0447 2113743L09 470pF C0448 2113743L09 470pF C0449 2113743L09 470pF C0470 2113743L09 470pF C0471 2113743L09 470pF C0472 2113743L09 470pF C0473 2113743L09 470pF C0474 2113743L09 470pF C0476 2113743L09 470pF C0477 2113743L09 470pF C0478 2113743L09 470pF C0482 2113743L09 470pF C0483 2113743L09 470pF C0484 2113741F17 470pF C0485 2113743L09 470pF C0486 2113743L09 470pFC0487 2113743L09 470pF C0488 2113743L09 470pF C0490 2113743L09 470pF C0491 2113743L09 470pF C0492 2113743L09 470pF C0493 2113743L09 470pF C0494 2113743L09 470pF C0495 2113743L09 470pF C0496 2113743L09 470pF C0497 2113743L09 470pF C0499 2113743L09 470pF C0501 2113741F49 10nF C0502 2113743L09 470pF C0503 2113743L09 470pF C0504 2113743L09 470pF C0505 2113743L09 470pF C0506 2113743L09 470pF C0508 2113743L09 470pF C0509 2113743L09 470pF C0510 2113741F17 470pF C0511 2113743L09 470pF C0512 2113743L09 470pF C0513 2113741F17 470pF C0514 2113743L09 470pF C0515 2113743L09 470pF C0516 2113741F49 10nF C0517 2113743N48 82pF C0518 2113743L09 470pF C0541 2311049A05 470nF C0542 2311049A99 47uFC0591 2113743E20 100nF
CircuitRef
MotorolaPart No. Description
C0592 2113743E20 100nC0593 2113743E20 100nC0601 2113741F17 470pC0603 2380090M24 10uFC0611 2311049C06 22uFC0612 2113743E20 100nC0622 2311049A99 47uFC0641 2113741F17 470pC0644 2311049A97 33uFC0645 2113743E20 100nC0652 2311049A97 33uFC0654 2311049A57 10uFC0655 2113743E20 100nC0661 2311049C05 47uFC0662 2113741F49 10nFC0663 2113743E20 100nC0671 2113743E20 100nC0681 2113743E20 100nD0101 4880236E05 DiodD0151 4813833C02 DiodD0179 4813833C02 DiodD0621 4813833C02 DiodD0651 4813833C02 DiodD0660 4813833C02 DiodD0661 4813833C02 DiodE0271 2484657R01 FerriE0272 2484657R01 FerriE0631 2484657R01 FerriJ0401 0902636Y02 ConnJ0451 0902636Y01 ConnJ0501 0986105B01 ConnJ0551 0905505Y04 ConnJ0601 0986165B01 DC PQ0110 4880048M01 NPNQ0151 4880048M01 NPNQ0171 4880048M01 NPNQ0173 4880052M01 NPNQ0177 4880048M01 NPNQ0181 4880048M01 NPNQ0183 4880048M01 NPNQ0185 4880048M01 NPNQ0271 4813824A10 NPNQ0641 4880048M01 NPNQ0661 4805921T02 DualQ0662 4813824A10 NPNQ0663 4880048M01 NPNQ0681 4880052M01 NPNR0101 0662057A73 10k R0102 0662057A65 4k7 R0104 0662057A73 10K R0105 0662057A97 100K
CircuitRef
MotorolaPart No.
4-23
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRU**UUU
* Motorola Depot Servicing only
Reference designators with an asterisk indicate components which are not field replaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off-frequency at temperature extremes.
0267 0662057A89 47K 0268 0662057A73 10K 0269 0662057A41 4700273 0662057A82 24K 0275 0662057A73 10K 0276 0662057A77 15K0401 0662057A33 2200407 0662057M26 10 0408 0662057A25 1000409 0662057M26 10 0467 0662057M26 10 0468 0662057M26 10 0481 0662057B47 0 0482 0662057B47 0 0510 0662057A65 4K0511 0662057A97 100K0512 0662057A77 15K 0525 0662057A97 100K 0527 0662057B47 0 0528 0662057B47 00529 0662057A89 47K0530 0662057B47 00531 0662057A43 5600533 0662057B47 0 0535 0662057A49 1K 0537 0662057A33 220 0538 0662057A33 220 0539 0662057A65 4K 0541 0662057A83 27K0591 0662057A82 24K0592 0662057A01 100611 0662057A91 56K 0612 0662057A65 4k0621 0662057A82 24K 0641 0662057A73 10k0642 0660076E70 7.5K0643 0660076E51 1.2K0651 0662057A01 100652 0662057A01 10 0661 0662057A49 1K 0662 0662057B02 150K 0671 0662057A84 30K 0672 0662057A73 10K 0681 0662057A79 18K 0682 0662057A93 68K 0101 5102226J56 Microprocessor
U0111 5102463J64 EEPROM U0121 5186137B01 512KX8 ROM 0122 5185963A21 32KX8 SRAM0141 5113805A30 Remux 0211 5183222M49 Quad Opamp
CircuitRef
MotorolaPart No. Description
U0221 5185963A53 ASFICU0251 5113806A20 Mux/DemuxU0271 5109699X01 Audio Power AmplifierU0611 5183308X01 Adjustable Voltage Regulator U0641 5183308X01 Adjustable Voltage RegulatorU0651 5113816A07 Regulator, +5V U0652 5113815A02 Under Voltage SensorVR0151 4813830A15 Diode, 5.6V VR0501 4805656W09 Zener QuadVR0503 4805656W09 Zener Quad VR0504 4813830A40 Auto ShutdownVR0505 4805656W09 Diode Zener Quad VR0509 4813830A40 Auto ShutdownVR0510 4813830A40 Auto ShutdownVR0537 4813830A15 Diode, 5.6V VR0541 4813830A27 Diode, 14VVR0601 4813832C77 Transient SupressorVR0621 4813830A15 Diode, 5.6V Y0131 4880113R19 Crystal 38.4KHz
CircuitRef
MotorolaPart No. Description
4-24
This page intentionally left blank
4-25
332
c
GND
RXINJ
.022uFC4336
3
C4339
Vac
1KR4343
R434410
Q4332
C4333Vac
SH4301SHIELD
0
RXINJ_UHF_VCO
R4347
C4334
Vac
R4341
0
R4339Vac
SHIELDSH4302
Vac
R4337
100pF
C4335
Vac
VacR4345
R4336 C4337
51pF
390nH
R4338
Vac
L4333
R4334
Vac
2.2KR4342
6
4
4333
Q4331
c
R4335
Vac
51pFC4338
R4340
Vac
13.5 to 16 dBm
0 VDC (Tx)4.7 VDC (Rx)
ZWG0130272
Figure 4-16. UHF (403-470MHz) Voltage Controlled Oscillator Schematic Diagram
CR4302
R4361180
CR4301
0
R4315
L4
Va
VCOBIAS_2
100pF
VCTRL_UHF_VCO C4312
12pF
C4309
R4311
390nH
7.5K
Vac
L4361
R433
C4305Vac
CR4303
R430210K
R4346
10K
1pFC4321
C43141.5pF
5V_UHF_VCO
C43180.22uF C4381
0.1uF
C4323
Vac
30R4313
0.1uF
CR4311
100pF
C4352
C4363
Vac
C4301
C4372
Vac R4332
Vac
4.7uF
C4325
1P1
2
P2
3 P3
TXINJ_UHF_VCO
L4312
RESONATOR
L433133nH
L4301390nH TRB_UHF_VCO
C4315100pF
Vac
22
R4331
C4313
TX_EMITTER
1TX_IADJ
10TX_OUT
13TX_SWITCH
14
VCC_BUFFERS
18
VCC_LOGIC
RX_BASE6
RX_EMITTER
2RX_IADJ
8RX_OUT
7RX_SWITCH
3SUPER_FLTR
19TRB_IN
16TX_BASE
15
1
4COLL_RFIN
20FLIP_IN
11G
ND
_BU
FF
ER
S
9G
ND
_FLA
G
GN
D_L
OG
IC17
12PRESC_OUT
5
50U54
U4301
Q4301
100pF
2.4pF
C4307
68nH
C4324
56K
R4321
L4371
R4323
6.8pF
100K
C4331
C4351100pF
VCOMOD
390nH
L4311
C43552.2uF
C4362
Vac
CR4321C4322
Vac
C4374
Vac
270R4314
C4373Vac
C43062pF
C4311100pF
C43710.1uF
0.22uF
C4308
0.1uFC4316
C4383
Vac
8.2pFC4303
C4354
C4382
Vac
2.2uF
R43125.6K
30
R43038.2pFC4302
390nH
C4332
Vac
PRESC
L4302
R4322
10K
2
1
3
C4361100pF
TXINJ
Q
VCOBIAS_2_UHF_VCO
C43750.1uF
Va
10
R4305390nHL4304
390nHL4305
Vac
VSF_UHF_VC0
3.9pF
C4317
VCOMOD_UHF_VCO
TRB
C4304
5.6K
R4301VSF
3 P3
5V
C43530.1uF
L4303RESONATOR
1 P1
2 P2
180
R4304
390nH
L4313
GROUND
VCTRL
PRESC_UHF_VCO
5V
VSF
TXSW
TXSW
RXSW
RXSW
VSF
0 VDC (Tx)
4.58 VDC
4.58 VDC
2.5 - 11 VDC
0 VDC (Rx)4.97 VDC (Tx)
-18 to -16 dBm (Rx)-16 to -11 dBm (Tx)
4 to 6 dBm
4.54 VDC
4.54 VDC (Tx)0 VDC (Rx)
4.42 VDC (Rx)0 VDC (Tx)
3.1 VDC (Rx)2.6 VDC (Tx)
1.91 VDC (Tx)0 VDC (Rx)
2.45 VDC (Rx)0 VDC (Tx)
2.35 VDC (Tx)
4.54 VDC(Rx)
2.43 VDC (Rx)
4-26
C4251
C42521000pF
202
C42534.7uF
IN_5V_RF_REG
MODIN
C4227
100pF
100pFC4243
U4507
100pF
VSF_UHF_FN_1
C4255
CLK_UHF_FN_1
C4242
VDDA
100pF
CSX_UHF_FN_1
C4244CLK
VSF
100pF
30KR4252
C4231
DATA
.01uF
VDDA_UHF_FN_1
.01uFC4232
2.2uFC4233
0.1uFC4254
C42631.5pF
L4231
PRESC
CSX
2.2uH
MODIN_UHF_FN_1
DATA_UHF_FN_1
C42142.2uF
VCOBIAS_2
IN_5V_RF_REG_UHF_FN_1
C42110.1uF
uF30
7BACK
8NPUT
3DOWN
U4506
.01uFC4234
2.2uFC4215
R425139K
C4226
11 dBm (Tx)
DC (Rx)
DC
VDC
16 dBm (Rx)
0 VDC
4.97 VDC
2.52 VDC
4.97 VDC
4.58 VDC
ZWG0130270
Figu
C4262220pF
C42280.1uF
R4221
150 TP41
TRB
D4261
2.2uFC4213
R4241
220
C4221.01uF
LOCK_UHF_FN_1
C4202
.01uF
BWSELECT
0.1uFC4209
2.2uFC4210
16_8MHz_UHF_FN_1
C4204
5V_UHF_FN_1
100pF
R4222510
VCOMOD
C4246100pF
100pFC4287
C4241
C4223
0.1uFC4222
C4207
C42890.1uF
Vac
VCTRL
R4263
47R4204
5V
.01uF
C4203
C4212
.018uF
1514 VMULT2
12 VMULT3
11 VMULT4
VR
O13
25 WARP
23 XTAL1XTAL224
SFBASE
26SFCAP
30SFIN
28 SFOUT
37 TEST1
38 TEST2
21VBPASS
47V
CP
VMULT1
31NC3
44P
D_G
ND
PD
_VD
D5
PREIN32
33P
RE
_GN
D
34P
RE
_VD
D
35PVREF
18REFSEL
27
45 IADAPT
16 INDMULT
43 IOUT
LOCK4
10MODIN
41 MODOUT
17NC1
29NC2
39BIAS2
42CCOMP
9CEX
8CLK
7DATA
DG
ND
6
36D
VD
D
19 FREFOUT
46 ADAPTSW
22A
GN
D
48 AUX1
1 AUX2
2 AUX3
3 AUX4
20A
VD
D
40BIAS1
63A27
U4201
L4201390nH
BWSELECT_UHF_FN_1
VCOMOD_UHF_FN_1
510pF
C4225
C4208
0.1uF
TP42011
C420610uF
R4261150K
33K
R4206
C426162pF
5V_UHF_FN_2
C4205.01uF
150
R4201
C4288
16_8MHz
2GND
3OUT
VCC4
VCNTL1
16.8MHzY4262
TTS05V
R4262
C4235
2.2C4268
R4223
3
TRB_UHF_FN_1
6A1
5A2
4A3
K11K22K3
D4201
6 5V_TAP
5ERROR FEED
4GND
I1
OUTPUT
2 SENSE SHUT
LP2951U4211
VCTRL_UHF_FN_1
R4211
0
R422847K
R420347
C4224
LOCK
1uF
2 1
C4216
16.8MHz
2.63 VDC (TX)
4.97 VDC (25KHZ Chan. Spacing)
0 VDC (12.5KHZ Chan. Spacing)
5 VDC (Locked)
0 VDC (Unlocked)
10.87 VDC
-16 to -
12.7 VDC
4.97 VDC
6.68 VDC
2.5 to 11 VDC
1.76 VDC (Tx)
1.78 V
3.79 V
2.48 VDC
3.43
-18 to -
2.48 VDC
1.28 VDC
3.48 VDC0 VDC (RX)
4.97 VDC (TX)
3.05 VDC (RX)
re 4-17. UHF (403-470MHz) Fractal-N Schematic Diagram
4-27
100pFC4473
100pFC4479
R4472
Vac
C4480
RE
SE
T
3.9KR4503
R4492
10K
RXIN
RE
SE
T_V
HF
_PA
_1
c
4455
Vac
C4451
C4499100pF
C4521100pF
CLK
Vac
C4444
C4502.015uF
R4474
100K
R4513
10K
2200pFC4503
R451151
J4401-11
FE
CT
RL_
1
FE
CT
RL_
2F
E_C
NT
L_2_
VH
F_P
A_1
100pFC4459
Vac
C4470
R44750
C451036pF
D4471
39pFC4442
R4482200K
R4512
470
K9V1_UHF_PA_1
Vac
R4471
10K
36pF
R4506
C4472
TP4532
R4409
100K
C44986.8pF
FE
_CN
TL_
1_V
HF
_PA
_1
DATAK9V1
D4451
VOUT
LM50
U4502
GN
D3
PO
S1
2
L4493
17nH
1
Vac
C4452 Vac
C4463
L4473
43.67nH
TEMPSENSE
C4466Vac
D4452
2200pFC4506
100KR4483
J4401-33
TP4530
C4474
10K
R4504
12pF
L4472
17nH
11KR4491
5.6pFC4496
3601
C4492
100pF
Vac464
82
Vac
C4465
R4496
68K
Q4471
R4484
C449110pF
TEMPSENSE_UHF_PA CSX_VHF_PA_1
5.6K
R4501
C4507100pF
Q4472
DATA_VHF_PA_1
10pFC4494
453
17nH
L4491
CSX
C44752pF
VA
R218
VA
R324
VG15
6V
L19
VLI
M
RS
RSET31
23R
X2
T1
30TEMP
14V10
16V45
V5E
XT17
VA
R120
F168
8G
ND
1
25GND2
4IN
TN
A22
11Q
10QX
RF
IN1
21
CEX
3C
I
5C
J
7C
L
26CLK
12CQ
CQX1328
DATA
9
U4501
32ANO
27BPOS
29H99S-4
1uF
C4504.02uF
C4505
C4441
L4492
17nH
RX_IN_VHF_PA_1
30pF
C4469100pF
VR44735.6V
C444812pF
R4523
R4502200K
Vac
C44436.8pF
1000pFC4522
4.3KR4473
J4401-22
5.6VVR4471
D4472
CLK_VHF_PA_1
R4457120
PCIC_MOSBIAS_19V3
9V3
ALT
PA_PWR_SET
9V3
A+
A+
9V3
9V3
0.75 VDC
9.2 VDC
3.1 VDC (44W)2.2 VDC (28W)
ZWG0130271
Figure 4-18. UHF (403-470MHz) Power Amplifier Schematic Diagram
Vac
C4520C46300.1uF
100pFC4410
TXINJ
PA_PWR_SET
R4630
Vac
9V3
C44971000pF
57R01L4440
C4407
BIAS_2_UHF_PA_1
0.1uF
R4416
R442110
100
Va
R
1
3
Q4441MRF650
4
2
30pF
C4431
Vac
C4456
620
R4425
R4422
620
100pF
C4417
C44781000pF
1000pFC4414
R4485120120
R4486
L454157R01
Vac
R4607
14VD1
2VG1
3VG2
200
R4405
8NC1
9NC2
10NC3
15NC4
16RFIN
6RFOUT1
7RFOUT2
1VCNTRL
11G2
4G
ND
15
GN
D2
12G
ND
313
GN
D4
C4446100pF
09Z67U4401
R4414
Vac
Vac
C4447
C446039pF
C44951000pF
TX_INJ_UHF_PA_1
24KR4632
100R4415
30pFC4486
R4601
4.7
C445016pF
Vac
C4457
100pFC4439
57R01
L4402
C4412100pF
3 4 5 7 8
MOSBIAS_2
Q44216
2
1
Vac L4474
R449751
R4602
4.7Vac
R4433
VR44725.6V
L4401
11.03nH
Vac
R44125.6K
33pFC4449
Vac
D4403
Vac R4411
C44090.1uF
57R01L4421
Vac
C4455
1uFC4423
Vac
D4402
R4431
PA_PWR_SET_1_UHF_PA_1Vac
Vac
C4461
10uFC4436
VacC4424
C4462
R4633
Vac
C4632
Vac
Vac
R4459
TP4537
CNTLVLTG_UHF_PA_1
0.1uFC4418
C4425.022uF
TP453
C4416.022uF
620
R4424
.033uFC4602
Vac
R4408100pF
R450710K
C4426
TP4536
C4476
C4401
Vac
100pF
PASUPVLTG
L4543
R44284.7K
13.85nH
Vac R4481
Vac
C4437Vac
C4453
30pFC4484
15
R4402
9V3_UHF_PA_1
R449551
30pFC4432
C44380.1uF
L4457R
Q4473
CNTLVLTG
C4488100pF
R4476 Vac
C4
R4423
36pF
620
C4419
13.85nH
C443527pF
L4441
30pFC4487
C4420
390nH
43pF
L4411
R4403300
C448530pF
39pFC4434
Vac
Vac
C4490
3.3K
R4514
R44883K
R4487100K
Q4451
30pFC4482
D4
R4600
4.7
10K
R4427
TP4533
100pFC4483
10K
R4401
R4480
300
C4421.033uF
PASUPVLTG_UHF_PA_1
R46311K
7G1
8G2
9G3G4
10
S1
S2
S3
S4
MRF5015Q4431
D
G
100pF
C4404
Vac
C4493
Vac
C4489
C44033.9pF
L4403
390nH
3000pF
17nHL4437
C4481
C4422100pF
ALT
Load
PA_PWR_SET
Load
9V3
9V3
PCIC_MOSBIAS_1
PASUPVLTG
9V3
4 to 6 dBm
3.7 to 3.9 VDC
4.5 VDC (44W)4.4 VDC (28W) 6.5 VDC (44W)
6.2 VDC (28W)
2.4 to 2.6 VDC
3.11 VDC (44W)2.2 VDC (28W)
4-28
Tab
CiR
C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0C0
F F F F
F
F F F F FF F F F
F F F FF F F
F F F F F F F F
F F
Description
C3152 2113741F49 10nF C3155 2113741F49 10nF C4001 2113740F09 1.8pF C4002 2113740F39 33pF C4003 2113740F41 39pF C4004 2113740F42 43pF C4005 2113740F42 43pF C4006 2113740F42 43pF C4007 2113740F41 39pF C4008 2113741F25 1nF C4009 2113740F51 100pF C4010 2113741F13 330pF C4011 2113741F37 3.3nF C4012 2113741F13 330pF C4013 2113741F37 3.3nF C4014 2113740F51 100pF C4015 2113740F51 100pF C4017 2113740F09 1.8pF C4018 2113740F29 12pF C4019 2113740F35 22pF C4020 2113740F40 36pF C4021 2113740F40 36pF C4021 2113740F51 100pF C4022 2113740F40 36pF C4023 2113740F35 22pF C4024 2113741F25 1nF C4025 2113740F11 2.2pF C4026 2113740F09 1.8pF C4027 2113740F09 1.8pF C4029 2113740F09 1.8pF C4030 2113740F09 1.8pF C4031 2113740F30 13pF C4051 2113740F27 10pF C4052 2113740F49 82pF C4053 2113740F32 16pF C4054 2113740F32 16pF C4202 2113741F49 10 nF C4203 2113741F49 10 nF C4204 2113740F51 100pF C4205 2113741F49 10nF C4206 2311049J25 10uF C4208 2113743E20 100nF C4209 2113743E20 100nF C4210 2104993J02 2.2uFC4211 2113743E20 100nF C4212 2113743E05 1.8nF C4213 2311049A09 2.2uF C4214 2311049A09 2.2uF C4215 2311049A09 2.2uF C4221 2109720D01 100nF
CircuitRef
MotorolaPart No. Description
le 4-4. UHF B1 Radio Parts List
rcuitef
MotorolaPart No. Description
101 2113740F51 100pF 107 2113741F25 1nF 112 2113743E20 100nF 121 2113743E20 100nF 122 2113743E20 100nF 131 2113740F35 22pF 132 2113740F35 22pF 141 2113743E20 100nF 151 2113741F49 10nF 201 2311049A57 10uF 204 2113743E20 100nF 212 2311049A57 10uF 221 2113743E20 100nF222 2113743E20 100nF 223 2113743E20 100nF 224 2113740F51 100pF 225 2113743E20 100nF 226 2113743E20 100nF 227 2113743E20 100nF 231 2113743B29 1uF 232 2113743E20 100nF 234 2113743E20 100nF 235 2113743E07 22nF 236 2113743E10 33nF 241 2113743E20 100nF 243 2113740F51 100pF 244 2113743E20 100nF 245 2113743E20 100nF 246 2113741F49 10nF 252 2311049A07 1uF 254 2113743E20 100nF 255 2113743E20 100nF 261 2113743E20 100nF262 2113740F49 82pF 265 2113743E20 100nF 267 2113741F49 10nF 271 2113741F49 10nF 272 2113743E20 100nF 273 2113741F37 3.3nF 275 2311049A99 47uF 276 2113741F25 1nF 277 2113741F25 1nF 421 2113743N48 82.0pF 422 2113741F17 470pF 423 2113741F17 470pF 426 2113743L09 470pF 427 2113743L09 470pF 428 2113743N48 82.0pF
C0429 2113743L09 470pF C0430 2113741F17 470pF C0431 2113741F17 470pF C0445 2113743L09 470pF C0446 2113743L09 470pF C0447 2113743L09 470pF C0448 2113743L09 470pF C0449 2113743L09 470pF C0470 2113743L09 470pFC0471 2113743L09 470pFC0472 2113743L09 470pF C0473 2113743L09 470pF C0474 2113743L09 470pF C0476 2113743L09 470pFC0477 2113743L09 470pF C0478 2113743L09 470pF C0482 2113743L09 470pF C0483 2113743L09 470pF C0484 2113741F17 470pFC0485 2113743L09 470pFC0486 2113743L09 470pF C0487 2113743L09 470pF C0488 2113743L09 470pFC0490 2113743L09 470pF C0491 2113743L09 470pFC0492 2113743L09 470pF C0493 2113743L09 470pF C0494 2113743L09 470pF C0495 2113743L09 470pF C0496 2113743L09 470pF C0497 2113743L09 470pF C0499 2113743L09 470pF C0501 2113741F49 10nF C0502 2113743L09 470pF C0503 2113743L09 470pF C0504 2113743L09 470pF C0505 2113743L09 470pF C0506 2113743L09 470pF C0508 2113743L09 470pF C0509 2113743L09 470pF C0510 2113741F17 470pF C0511 2113743L09 470 PF C0512 2113743L09 470 PF C0513 2113741F17 470pFC0514 2113743L09 470 PFC0515 2113743L09 470pF C0516 2113741F49 10nF C0517 2113743N48 82pF C0518 2113743L09 470pF C0541 2311049A05 470nF
CircuitRef
MotorolaPart No. Description
C0542 2311049A99 47uFC0591 2113743E20 100nC0592 2113743E20 100nC0593 2113743E20 100nC0601 2113741F17 470pC0603 2380090M24 10uFC0611 2311049C06 22uFC0612 2113743E20 100nC0622 2311049A99 47uFC0641 2113741F17 470pC0644 2311049A97 33 UC0645 2113743E20 100nC0652 2311049A97 33 UC0654 2311049A57 10uFC0655 2113743E20 100nC0661 2311049C05 47uC0662 2113741F49 10nFC0663 2113743E20 100nC0671 2113743E20 100nC0681 2113743E20 100nC3100 2113741F25 1nF C3102 2113740F31 15pFC3103 2113740F39 33pC3104 2113743E20 100nC3110 2113740F37 27pFC3111 2113743E20 100nC3112 2113740F49 82pFC3114 2113740F33 18pFC3115 2113740F35 22pFC3116 2113743E20 100nC3121 2113743E20 100nC3122 2113743E11 39nFC3123 2113743E11 39nFC3132 2113743E20 100nC3133 2311049A57 10uFC3134 2113743E20 100nC3135 2113740L30 33pFC3136 2113740L29 30pFC3137 2113743E11 39nFC3138 2311049A40 2.2uC3139 2113743E20 100nC3140 2113743E20 100nC3141 2113743E20 100nC3142 2113743E20 100nC3143 2113740F53 120pC3144 2113743E20 100nC3145 2113743E20 100nC3146 2113741F41 4.7nC3147 2113743E20 100nC3151 2113741F49 10nF
CircuitRef
MotorolaPart No.
4-29
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
pF 0pF pFpF0pF 8pF 0pF 0pF pF 0pF pF pF pF pF 0pF pF 0pF pF
6pF 8pF 0 pF nF
2nF nF F
2nF 0pF pF 0pF nF 0nF0nF iode, Varactor iode, Varactoriode, Varactoriode, Varactoriode, Varactoriode Schottky iode Dual iode Dual iode Dual iode Dual iode Dual iode Dual iode Schottky iode, Varactor iode, Varactor ual Schottky iode, Varactoriode, Varactor
Description
D4051 4886143B01 Diode MixerD4201 4802233J09 Diode Tripple D4261 4802245J22 Diode, VaractorD4451 4880236E05 Diode Schottky D4452 4880236E05 Diode Schottky D4453 4880236E05 Diode SchottkyD4471 4802482J02 DiodeD4472 4802482J02 DiodeE0271 2484657R01 Ferrite BeadE0272 2484657R01 Ferrite BeadE0631 2484657R01 Ferrite BeadFL3101 9180112R16 2-Pole Crystal Filter,
44.85MHzFL3102 9180112R16 2-Pole Crystal Filter,
44.85MHzFL3111 9180469V04 Filter, 455kHz FL3112 9180469V06 Filter, 455kHz FL3114 9180468V06 Filter, 455kHz FL3115 9180469V03 Filter, 455kHz J0401 0902636Y02 12-Pin Flexible Connector J0451 0902636Y01 Flexible Connector, Side
EntryJ0501 0986105B01 20-Pin Connector J0551 0905505Y04 Connector, Zif Horizontal J0601 0986165B01 DC Power ConnectorJ4401 0986166B02 Mini-UHF RF ConnectorL3101 2462587T25 620nHL3111 2462587T25 620nHL3112 2462587T25 620nHL4003 2462587T23 470nHL4008 2462587T23 470nHL4051 2462587T17 150nHL4053 2462587X46 27nHL4054 2462587X43 15nHL4201 2462587Q42 390nHL4221 2462587P25 12uHL4225 2462587T40 33nHL4231 2462587Q20 2.2uHL4301 2462587T22 390nHL4302 2462587T22 390nHL4303 2460593C01 Teflon ResonatorL4304 2462587T22 390nHL4305 2462587T22 390nHL4311 2462587T22 390nHL4312 2460593C01 Teflon ResonatorL4313 2462587T22 390nHL4331 2462587T09 33nHL4332 2462587T36 15nHL4333 2462587T22 390nHL4361 2462587T22 390nH
CircuitRef
MotorolaPart No. Description
4222 2109720D14 100nF4224 0882422W23 1.0uF4225 2113741F18 510pF 4227 2113740F51 100pF 4228 2113743E20 100nF 4230 2104993J02 2.2uF 4231 2113741F49 10nF 4232 2113741F49 10nF 4233 2104993J02 2.2uF 4234 2113741F49 10nF4242 2113740F51 100pF4243 2113740F51 100pF 4244 2113740F51 100pF 4245 2113740F51 100pF 4246 2113740F51 100pF 4252 2113741F25 1nF 4253 2311049A56 4.7uF 4254 2113743E20 100nF 4255 2113740F51 100pF 4261 2113740L37 62pF 4262 2113740F59 220pF 4263 2113740F07 1.5pF 4287 2113740F51 100pF 4289 2113743E20 100nF4301 2113740F51 100pF 4302 2113740L16 8.2pF 4303 2113740L16 8.2pF 4304 2113740L08 3.9pF 4305 2113740F03 1pF 4306 2113740L01 2pF 4307 2113740F51 100pF 4308 2113743E20 100nF 4309 2113740F51 100pF 4311 2113740F51 100pF 4312 2113740F29 12pF 4313 2113740F03 1pF4314 2113740F07 1.5pF 4315 2113740F51 100pF 4316 2109720D14 100nF 4317 2113740F51 100pF 4318 2113743K16 220nF 4321 2113740F03 1pF 4322 2113740F51 100pF 4323 2113741F25 1.0nF4324 2113740L05 3pF 4325 2311049A56 4.7uF 4331 2113740L14 6.8pF 4332 2113743E20 100nF 4333 2113740F44 51pF 4334 2113740F44 51pF
CircuitRef
MotorolaPart No. Description
C4335 2113740F51 100pF C4336 2113743E07 22nF C4337 2113740F44 51pF C4338 2113740F44 51pF C4339 2113740F03 1pF C4351 2113740F51 100pF C4352 2113743E20 100nF C4353 2113743E20 100nF C4354 2104993J02 2.2uF C4355 2104993J02 2.2uF C4361 2113740F51 100pF C4362 2113743K16 220nF C4363 2113740F03 1pF C4371 2113743K16 220nF C4372 2113740F51 100pFC4373 2113740F03 1pF C4374 2113740F03 1pF C4375 2113743E20 100nFC4381 2113743E20 100nF C4382 2113740F51 100pF C4383 2113740F51 100pF C4401 2113740F51 100pF C4403 2113740F17 3.9pF C4404 2113740F51 100pF C4407 2113743E20 100nF C4409 2113743E20 100nF C4410 2113740F51 100pF C4412 2113740F51 100pF C4414 2113741F25 1nF C4416 2113743E07 22nF C4417 2113740F51 100pF C4418 2113743E20 100nF C4419 2113740F40 36pF C4421 2113741A57 33nF C4422 2113740A55 100pF C4423 2311049A08 1uF C4425 2113743E07 22nF C4426 2113740F51 100pF C4431 2113740A40 30pF C4432 2111078B27 30pFC4435 2111078B25 27pF C4436 2311049A45 10uF C4438 2113743E20 100nF C4439 2111078B42 100pFC4441 2180464E40 30pF C4442 2180464E34 39pF C4443 2111078B09 6.8pFC4446 2113740F51 100pF C4448 2180464E65 12pF C4449 2111078B23 24pF
CircuitRef
MotorolaPart No. Description
C4450 2111078B19 16C4459 2113740A55 10C4460 2111078B32 39C4472 2111078B31 36C4473 2113740F51 10C4474 2113740F23 6.C4475 2113740F10 2.C4479 2113740F51 10C4482 2113740F38 30C4483 2113740A55 10C4484 2113740F38 30C4485 2113740F38 30C4486 2113740F38 30C4487 2113740F38 30C4488 2113740F51 10C4491 2111078B13 10C4492 2111078B42 10C4494 2180464E63 10C4496 2111078B07 5.C4498 2111078B09 6.C4499 2113740F51 10C4502 2113743E03 15C4503 2113741F33 2.C4504 2113743E06 22C4505 2311049A07 1uC4506 2113741F33 2.C4507 2113740F51 10C4510 2111078B31 36C4521 2113740F51 10C4602 2113741A57 33C4630 2113743E20 10C4632 2113741F25 1.CR4301 4805649Q13 DCR4302 4862824C01 DCR4303 4862824C01 DCR4311 4802245J22 DCR4321 4862824C01 DD0101 4880236E05 DD0151 4813833C02 DD0179 4813833C02 DD0621 4813833C02 DD0651 4813833C02 DD0660 4813833C02 DD0661 4813833C02 DD3101 4880154K03 DD4001 4862824C01 DD4002 4862824C01 DD4003 4880154K03 DD4004 4862824C01 DD4005 4862824C01 D
CircuitRef
MotorolaPart No.
4-30
L43L44L44L44L44L44L44L44L44L44L44L44L44L44L44L45Q0Q0Q0Q0Q0Q0Q0Q0Q0Q0Q0Q0Q0Q0Q3Q3Q3Q3Q4Q4Q4Q4Q4Q4Q4Q4Q4Q4Q4R0R0R0R0R0
CiR
Description
R3108 0662057A44 620R3111 0662057A75 12KR3112 0662057A01 10 R3115 0662057A39 390 R3116 0662057A37 330 R3117 0662057A83 27KR3118 0662057A69 6.8KR3130 0662057A18 51 R3132 0662057A77 15KR3133 0662057A71 8.2KR3134 0662057A73 10KR3135 0662057A51 1.2KR3144 0662057A58 2.4KR3145 0662057A61 3.3KR3146 0662057A45 680 R3147 0662057A75 12KR3151 0662057A73 10KR3152 0662057A73 10KR3153 0662057A73 10KR3154 0662057A73 10KR4001 0662057A97 100KR4002 0662057A37 330R4003 0662057A63 3.9KR4004 0662057A59 2.7KR4005 0662057A73 10KR4006 0662057A35 270R4007 0662057A21 68R4008 0662057A13 33R4009 0662057A29 150R4010 0662057A29 150R4011 0662057A35 270R4012 0662057A97 100KR4013 0662057A35 270R4014 0662057A01 10R4022 0662057B47 0R4051 0662057A18 51R4052 0662057B47 0R4060 0662057B10 330KR4201 0662057A29 150 R4203 0662057A17 47 R4204 0662057A17 47 R4206 0662057A85 33KR4211 0662057B47 0 R4221 0662057A29 150 R4222 0662057A42 510 R4223 0662057A21 68 R4228 0662057A89 47KR4241 0662057A33 220 R4251 0662057A87 39KR4252 0662057A84 30K
CircuitRef
MotorolaPart No. Description
71 2462587T13 68nH01 2460591B04 Airwound Coil, 4-turns 02 2484657R01 Ferrite Bead03 2462587T22 390nH11 2462587T22 390nH21 2484657R01 Ferrite Bead36 2484657R01 Ferrite Bead37 2460592A01 Airwound Coil, 3-turns 40 2484657R01 Ferrite Bead41 2460591C23 Airwound Coil, 5-turns72 2460592A01 Airwound Coil, 3-turns 73 2460591N36 Airwound Coil, 5-turns91 2460592A01 Airwound Coil, 3-turns 92 2460592A01 Airwound Coil, 3-turns 93 2460592A01 Airwound Coil, 3-turns 43 2460591C23 Airwound Coil, 5-turns
110 4880048M01 NPN 151 4880048M01 NPN 171 4880048M01 NPN 173 4880052M01 NPN Darlington177 4880048M01 NPN 181 4880048M01 NPN 183 4880048M01 NPN 185 4880048M01 NPN 271 4813824A10 NPN641 4880048M01 NPN 661 4805921T02 DUAL 662 4813824A10 NPN 663 4880048M01 NPN 681 4880052M01 NPN Darlington 101 4813827A07 NPN102 4813827A07 NPN151 4880048M01 NPN DIG 152 4880048M01 NPN DIG 003 4813827A07 NPN301 4805218N63 Diode Dual Schottky 331 4813827A07 NPN332 4813827A07 NPN333 4802245J50 NPN421 5105385Y91 LDMOS Power Amplifier431 4805537W01 Bipolar Power Amplifier441 4880225C30 Bipolar Power Amplifier471 4880048M01 NPN 472 4805128M27 PNP 473 4813824A10 MMBT3904101 0662057A73 10K102 0662057A65 4K104 0662057A73 10K105 0662057A97 100K108 0662057A57 2K
rcuitef
MotorolaPart No. Description
R0109 0662057B47 0R0111 0662057B47 0 R0113 0662057A73 10K R0114 0662057A73 10KR0115 0662057A73 10KR0117 0662057A63 3k9R0121 0662057A97 100K R0131 0662057B46 10M R0132 0662057B10 330k R0151 0662057A82 24KR0152 0662057A82 24KR0170 0662057A73 10KR0171 0662057A65 4KR0172 0662057A73 10kR0173 0662057A65 4KR0174 0662057A73 10KR0175 0662057A73 10KR0176 0662057A84 30KR0177 0662057A65 4KR0178 0662057A89 47K R0179 0662057A89 47K R0181 0662057A65 4kR0182 0662057A89 47K R0183 0662057A65 4kR0184 0662057A89 47K R0185 0662057A65 4kR0186 0662057A89 47K R0201 0662057A25 100 R0202 0662057A43 560R0204 0662057A43 560 R0205 0662057A73 10KR0206 0662057A73 10KR0207 0662057A57 2KR0208 0662057A57 2KR0211 0660076E70 7.5KR0212 0660076E70 7.5KR0221 0662057A82 24K R0222 0662057A82 24K R0223 0662057A84 30K R0224 0662057A71 8KR0226 0662057B22 1MR0227 0662057B22 1M R0241 0662057A89 47KR0242 0662057B47 0R0251 0662057A89 47KR0252 0662057A91 56KR0253 0662057A97 100KR0261 0662057A73 10KR0262 0662057A97 100KR0265 0662057A82 24K
CircuitRef
MotorolaPart No. Description
R0267 0662057A89 47KR0268 0662057A73 10KR0269 0662057A41 470 R0273 0662057A82 24KR0275 0662057A73 10KR0276 0662057A77 15KR0401 0662057A33 220 R0407 0662057M26 10 R0408 0662057A25 100 R0409 0662057M26 10 R0467 0662057M26 10R0468 0662057M26 10 R0481 0662057B47 0 R0482 0662057B47 0 R0510 0662057A65 4KR0511 0662057A97 100KR0512 0662057A77 15KR0525 0662057A97 100KR0527 0662057B47 0 R0528 0662057B47 0 R0529 0662057A89 47KR0530 0662057B47 0 R0531 0662057A43 560 R0533 0662057B47 0R0535 0662057A49 1KR0537 0662057A33 220 R0538 0662057A33 220R0539 0662057A65 4KR0541 0662057A83 27KR0591 0662057A82 24KR0592 0662057A01 10R0611 0662057A91 56K R0612 0662057A65 4KR0621 0662057A82 24K R0641 0662057A73 10KR0642 0660076E70 7.5KR0643 0660076E51 1.2KR0651 0662057A01 10 R0652 0662057A01 10 R0661 0662057A49 1KR0662 0662057B02 150KR0671 0662057A84 30KR0672 0662057A73 10KR0681 0662057A79 18KR0682 0662057A93 68KR3101 0662057A75 12KR3102 0662057A01 10 R3105 0662057A25 100 R3106 0662057A83 27KR3107 0662057A69 6.8K
CircuitRef
MotorolaPart No.
4-31
vicing only
rs with an asterisk indicate e not field replaceable be calibrated with uipment after installation. parts have been replaced in quency at temperature
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
MOS
mperature Sensor iodeener Quadner Quad
iode ner Quad
iodeiodeiodeiode ansient Suppressoriodener Diode
rystal Oscillator, 38.4 kHzrystal Oscillator5 kHz Discriminator
rystal Oscillator, 16.8 MHz
Description
* Motorola Depot Ser
Reference designatocomponents which arbecause they need tospecialized factory eqRadios in which thesethe field will be off-freextremes.
4261 0662057B02 150K4301 0662057A67 5.6K4302 0662057A73 10K4303 0662057A12 30 4304 0662057A31 180 4305 0662057A01 10 4311 0662057A70 7.5K4312 0662057A67 5.6K4313 0662057A12 30 4314 0662057A35 270 4315 0662057B47 0 4321 0662057A91 56K4322 0662057A73 10K4323 0662057A73 10K4331 0662057A09 22 4332 0662057A81 22K4333 0662057A73 10K4334 0662057B47 0 4335 0662057A01 104336 0662057A49 1K4337 0662057B47 0 4338 0662057A33 2204339 0662057A09 22 4340 0662057A33 220 4341 0662057B47 0 4342 0662057A57 2.2K4343 0662057A49 1K4344 0662057A01 10 4345 0662057B47 04346 0662057A73 10K4347 0662057B47 0 4361 0662057A31 180 4401 0662057A36 300 4402 0662057A05 15 4403 0662057A36 300 4405 0662057A32 200 4409 0662057A97 100K4412 0662057A67 5.6K4415 0662057A25 100 4416 0662057A25 100 4421 0680194M01 10 4422 0611079A69 620 4423 0611079A69 620 4424 0611079A69 620 4425 0611079A69 620 4427 0662057A73 10K4428 0662057A65 4.7K4457 0683962T51 120 4473 0662057A64 4K4474 0662057A97 100K
CircuitRef
MotorolaPart No. Description
R4475 0662057B47 0 R4480 0662057A73 100KR4482 0662057B05 200KR4483 0662057A97 100KR4484 0662057A93 68KR4485 0662057C53 120 R4486 0662057C53 120 R4491 0662057A74 11KR4492 0662057A73 10KR4495 0680195M18 51R4496 0680194M23 82 R4497 0680195M18 51R4501 0662057A67 5.6KR4502 0662057B65 200KR4503 0662057A63 3.9KR4504 0662057A73 10KR4506 0662057A73 10KR4507 0662057A73 10KR4511 0680194M18 51R4512 0662057A41 470 R4513 0662057A73 10KR4514 0662057A61 3.3KR4600 0662057C19 4.7 R4601 0662057C19 4.7R4602 0662057C19 4.7R4631 0662057A49 1KR4632 0662057A82 24KSH4301 2605782V03 VCO ShieldSH4302 2605782V03 VCO ShieldT4051 2505515V03 Mixer 4:1T4052 2505515V04 Mixer 5:1U0101 5102226J56 Microprocessor* U0111 5102463J64 EEPROM* U0121 5186137B01 ROM U0122 5185963A21 SRAMU0141 5113805A30 REMUX U0211 5183222M49 Quad OpampU0221 5185963A53 ASFICU0251 5113806A20 MUX/DEMUXU0271 5109699X01 AUDIO PA U0611 5183308X01 Adjustable Voltage Regulator U0641 5183308X01 Adjustable Voltage Regulator U0651 5113816A07 5V RegulatorU0652 5113815A02 Under-Voltage SensorU3101 5186144B01 IF ICU3111 5113805A86 CMOS SwitchU3115 5113805A86 CMOS SwitchU4201 5185963A27 Fract-N U4211 5185963A33 Voltage RegulatorU4301 5105750U54 VCO
CircuitRef
MotorolaPart No. Description
U4401 5105109Z67 LDU4501 5185765B01 PCU4502 5185963A15 TeVR0151 4813830A15 DVR0501 4805656W09 ZVR0503 4805656W09 ZeVR0504 4813830A40 DVR0505 4805656W09 ZeVR0509 4813830A40 DVR0510 4813830A40 DVR0537 4813830A15 DVR0541 4813830A27 DVR0601 4813832C77 TrVR0621 4813830A15 DVR4471 4813830a15 ZeY0131 4880113R19 CY3101 4880606B09 CY3102 9186145B02 45Y4261 4880114R04 C
CircuitRef
MotorolaPart No.
4-32
This page is intentionally left blank.
4-33
C3002
C3004
C3005
C3006C3007
C3008
C3009
C3010
C3011
C3012C3013
C3014
C3015C3016
C3017
3018
C3019C3020
C3034
C3035
C3101
C3102
C3103
C3114
C3115
C3131
C3132
C3133
C3134
C3135
C3136
C3137
C3139
C3140
C3141
C3142
C3143 C3144
C3145
C3472
C3473
C3474
C3475
C3491 C3492
D3001
D3003
D3004
D3471
D3472
23
45
6FL3101
23
45
6FL3102
43 2
FL3112
FL3114
2 3
J3401
L300
2
L3032
L310
1
L3471
L3472
L3477
Q3001
R3001
R3002
R3003
R3004
R3005
R3006
R3007
R3008
R3009
R3013
R3014
R3015
R3031
R3101
R3106R3111
R3117
R3130
R3132
R3144
R3145
11
120
10
U3101
8 7114
U3111
8 7114
U3115
2
Y3102
ZWG0130227P
Figure 4-19. VHF (136-174MHz) Main Board Top Side PCB
C0101C0102
C0104
C0105
C0106
C0107
C0121
C0131
C0132
C0211
C0212
C0221 C0222
C0223
C0224
C0225
C0226
C0227
C0231
C0232
C0233
C0234C0235
C0236
C0241
C0242
C0243
C0244
C0245
C0246
C0251
C0252 C0253
C0255
C0261
C0262
C0267
C0421
C0441
C0442
C0443
C0444
C0445
C0446
C0447
C0448
C0449
C0451
C0452
C0453
C0454
C0455
C0456
C0457
C0458
C0459
C0460
C0461
C0462
C0463
C0464
C0466
C0467
C0468
C0470
C0471
C0472
C0473
C0474
C0476
C0477
C0478
C0482
C0483
C0484
C0486
C0487 C0488
C0493C0494
C0495
C0496
C0501
C0502
C0503
C0504
C0505
C0506
C0508
C0509
C0510
C0511
C0512
C0513
C0514
C0515
C0516
C0517
C0518
C0519
C0520
C0521
C0522
C0523
C0524
C0525
C0526
C0527
C0528
C0530
C0531
C0532
C0533
C0534
C0535
C0536
C0537
C0538
C0539
C0540
C0542
C0601
C0603
C0612
C0651
C0652
C0654C0655
CC3021
C3032
C3209
C3210
C3211
C3213
C3214C3215
C3221C3222
C3223 C3224
C3226
C3227
C3231
C3232
C3233
C3234
C3235
C3242
C3243
C3244
C3245
C3246
C3252
C3253
C3254
C3255
C3324
C3336
C3337
C3341
C3342
C3344
C3345
C3346 C3347
C3357
C3361C3362
C3363
C3364
C3365
C3400
C3401
C3402
C3403
C3404
C3407
C3408
C3409
C3410
C3411
C3412
C3413
C3414
C3417
C3418
C3420
C3422
C3423
C3425
C3426
C3428
C3434
C3435
C3436
C3437
C3438
C3439
C3440
C3441
C3443
C3444
C3445
C3446
C3447
C3455
C3456
C3458
C3478
C3501
C3506
C3507
C3508
C3509
C3510
D0201
D0651
D3031
D3341
D3361
D3362
1 18
J0451
2011
10
J0501
J0601
L0481
L0482
L3034
L3201 L3232
L3333
L3341
L3343 L3344
L3346
L3361
L3362
L3363
L3364
L3401
L3403
L3411L3412
L3413
L3414
L3421
L3422
L3431
L3432
L3433
L3443L3444
L3474
Q0110
Q0177Q0181Q0185
Q3304
5
2
6
8
13
7
4 Q3421
Q3471
Q3501
Q3502
R0101
R0102
R0104
R0105
R0106
R0108 R0109
R0110
R0114
R0115
R0116
R0128
R0131
R0132
R0170
R0181
R0182
R0185
R0186
R0211
R0212
R0221
R0222 R0223
R0224
R0241
R0242
R0251
R0252
R0253
R0261R0262
R0267
R0268
R0269
R0510
R0522
R0524
R0528
R0533
R0535
R0538
R0539
R0611R0612
R0651
R0652
R3211
R3221
R3222
R3223
R3227
R3242
R3251
R3252
R3263
R3335
R3336
R3341
R3342
R3361
R3362
R3363
R3364
R3400
R3401
R3402
R3403
R3404
R3405
R3406
R3407
R3408
R3409
R3410
R3411
R3413
R3415
R3416R3418R3419
R3424
R3425
R3431
R3432
R3458
R3461
R3471
R3505
R3506
R3507
R3508
R3512
R3513
R3514
R3515
R3516
SH
3301
3
4 6
12
T3001
3
46
12
T3002
1
7651
26
U0101
3217
16 1
U0121
871 14
U0211
1 37
2513
U0221
1618 9
U0251
9
U0271
1
6
5
U0611
1
6
5
U0641
3
2
1
U0651
458
U3211
1
16
8
9
U3401
U3502
VR0501
VR0503VR0505
VR0510
2 3
4
Y0131
1
1
1
4-34
C303520pF
IO3
IO4
5.1pFC3033
D3031
IO1 IO21
2
XFMRXFMRT3001
4
6
3
R3035
4
6
3
1
2
NU0
XFMRT3002
L3034
R3031
NU33nH
51
560R3021
C3021120pF
C301356pF
82pFC3034
NU18pF
C3031
0R3033
P_4_1
P_4_3
10NU
R3030
820NU
R3034
IF_VHF_FE_1
150nHL3032
820NU
R3032
R3036
NU1K
C3018
NU4.7pF
IF
C3032
NU13pF
C30252.7pFNU
150nH NU
L3025
L3031
560nH
Figu
D300112
3
FECNTL_1_VHF_FE_1VLTG
RXIN_VHF_FE_1
9V3_VHF_FE_1
C3003.0033uF
SP_2_3
9V3
1K
R3012
C30014.7pF
D3004 12
3
SP_3_2
SP_3_1
SP_1_3
K9V1__VHF_FE_1
C3002
RXIN
9.1pF
56pFC3004
.0033uFC3011
R3003
SP_2_1
1K
SP_1_2
SP_1_1
.001uF
C3012
C3022R3013
.01uF3.3K
Q3002
R30041.5K
.001uFC3008
S
S
4.7KR3011
C3009
R3005
330pF
NU10K
330pFC3010
390R3008
R3007
12
390R3006
470nHL3002
C3005100pF
SP_2_2SP_4_2
R3009
SP_3_3
100K10R3015
C3014
7.5pF
560
R3002
C3007.0033uF
.001uFC3019
56pFC3006
Q3001
51R3014
D3003100K
R3001
.001uFC3020
C3016
R3010
100pF
30
680
R3018
43pFC3017
100
100R3017
R3016
R30001.5K
K9V1
1
23
FECNTL_1
D3000
9V3_VHF_FE_2
RXINJ
.0033uFC3000
C3024C3023
NU3300pF
NU330pF
47KR3019
RXINJ_VHF_FE_1
56pFC3015
NC_D3000_1
In case of interference caused bystrong offchannel inband carriers,remove R3018 . This will improve intermodulation performance, but willdecrease specified RX sensitivity.For critical basestation applications remove R3018, R3016, R3017. This will further improve intermodulation performance but will further decrease specified RX sensitivity.
Note1:
3,6VDC
3,0 -7,5VDC
re 4-20. VHF (136-174MHz) Receiver Front End Schematic Diagram
4-35
CFUCJ455FNU
GND
3
IN1 OUT 2
FL3113
10K
R3152
QU
AD
IN
10
IFA
MP
_DE
C1
19
IFA
MP
_DE
C2
17
LIM
_DE
C2
2
GN
D 15
IFA
MP
IN
IFA
MP
OU
T
16
Q3152
C31390.1uF C3141
0.1uF
RSSI_VHF_IF_1
14
VDD
7
VSS
U3115-4MC74HC4066
12
CNTL
11 10
C3143120pF
C31400.1uF
C31440.1uF
1.2K Y310245B01455KHz2
1R3135
C31420.1uF
HC4066
9
DISCAUDIO_VHF_IF_1
3111-3
CFUCJ455D
GND
3
IN1 OUT 2
RSSI
FL3114
C3152.01uF
.01uFC3151
R315310K
14
VDD
7
VSS
U3115-1MC74HC4066
13
CNTL
12
0.1uFC31453.3K
R3145
BWSELECT_VHF_IF_1
DISCAUDIO
3
GN
D1
GN
D2
4
1 IN 2OUT
BWSELECT
CFWC455FFL3115
HC4066
10
5
43 VDD
14
VSS
7
3111-4
U3115-2MC74HC4066
CNTL
C31470.1uF
C31464700pF
R31442.4K
C3155.01uF
Q3155NU
10K
R3155
R3151
1.2KNU
10KR3154
R3147
12K
Q3151
CNTL
6
8 9VDD
14
VSS
7
U3115-3MC74HC4066
680
R3146
9V3
9V3
9V3
C
12.5kHz 0VDC20/25kHz 5VDC
Figure 4-21. VHF (136-174MHz)Receiver IF Schematic Diagram
C313630pF
R310210
C31139.1pFNU
100NU
100
R3104
R3105
R3107
6.8K
OS
CO
UT
3
RF
IN
1
RF
IN_D
EC
2
RS
SIO
UT
5
RS
SI_
FE
ED
9
VC
C6
LIM
IN
14
LIM
OU
T
11
LIM
_DE
C1
13 1
MIX
OU
T
20
OS
CIN
4
AU
DIO
OU
T
8
AU
DIO
_FE
ED
7 18
U3101
18pFC3114
0.1u
FC
3134
OUT 2
FL3112CFWC455D
GN
D1
3 4
GN
D2
IN1
33pF
C3135
R3115
GN
D2
2G
ND
34 5
GN
D4
3IN 6OUT
390
12R17FL3102
1G
ND
1
GN
D1
1 2G
ND
24
GN
D3
GN
D4
5
IN3
OUT6
R3117
12R1612R16FL3101
27K
Q3102
R31338.2K
R3134
10K
10R3112
5V
C3115
620nH
22pF
L3100
VSS
7
MC74
CNTL
6
8 VDD
14
U
Q3101
.039uFC3137
C3104
0.1uF
D3101
C3122
.039uF
9V3
C31110.1uF
R3114
NU100
1pFNU
C3131
L3101620nH
2.2pF
CFWC455G
GN
D1
3 4
GN
D2
IN1 OUT 2
C3101
FL3111
C3103
33pF
C313310uFC3132
0.1uF
MC74
12
CNTL
11
14
VDD
7
VSS
U
C31382.2uF
15KR3132
C3123.039uF
6.8K
R3118
12KR3111
5V_VHF_IF_1
R3130
13
CNTL
12
14
VDD
7
VSS
51
VDD
14
VSS
7
U3111-1
MC74HC4066
MC74HC4066
MC74HC4066
CNTL
5
43
U3111-2
R310627K
GND2
GND1
4
OUT3
IN1
Y310112R17
44.395MHz
9V3_VHF_IF_2
IFIN_VHF_IF_1
IF
0.1uF
C3116
330R3116
L3112
9V3_VHF_IF_1
620nH
620nH
620
L3111
C3121R3108
0.1uF
C3110
27pF
12KR3101
15pFC3102
82pF
9V3
C3112
5V
5V
9V3
9V3
5V
9V3
IFI
C3100
1000pF
NU
NU
3.9VDC
3VDC
0.75VDC0.75VDC
3VDC
4-36
C3245220pF
uF
51
2.2uF
55
C3233
C32152.2uF
C3232.01uF1uF
3231
0.1uFC3211
L3231
2.2uH
220pFC3243
VCOBIAS_2_VHF_FN_1
CLK
0.1uFC3254
MODIN_VHF_FN_1
C3234.01uF
9V39V3_VHF_FN_1
VSF
CSX
MODIN
2420pF
VCOBIAS_1_VHF_FN_1
PRESC_VHF_FN_1
CSX_VHF_FN_1
VSF_VHF_FN_1
VCOBIAS_1
C32534.7uF
VCOBIAS_2
.2pF3226
C32521000pF
DATA
CLK_VHF_FN_1
DATA_VHF_FN_1
VDDAVDDA_VHF_FN_1
2.2uF
PRESC
C3214
VDDA
VDDA
k
2.5VDC
Figu
(SOURCE)
C3212
.018uF
2.2
R32
C32
C3244220pF
2.2uF
C3227
C3213
100pF
47R3203
A1
5A2
4A3
K11 K22 K33
6
6.2KNU
D3201
100KNU
R3262
R3227
.0
0.1uF
C
C3225
1K
1uF
R3222
1.5pF
C3224
23 XTAL1XTAL224
C3263
21VBPASS
47V
CP
VMULT11514 VMULT2
12 VMULT3
11 VMULT4
VR
O13
25 WARP
35PVREF
18REFSEL
27SFBASE 26SFCAP
30SFIN
28 SFOUT
37 TEST1
38 TEST2
17NC1
29NC2
31NC3
44P
D_G
ND
PD
_VD
D5
PREIN 32
33P
RE
_GN
D34
PR
E_V
DD
6
36D
VD
D
19 FREFOUT
45 IADAPT
16 INDMULT
43 IOUT
LOCK4
10MODIN41 MODOUT
20A
VD
D
40BIAS1
39BIAS2
42CCOMP
9CEX
8CLK
7DATA
DG
ND
46 ADAPTSW
22A
GN
D
48 AUX1
1 AUX2
2 AUX3
3 AUX4
U3201C3223
1uFNU
C3221.022uF
10uF
33K NU
C3206
5V_VHF_FN_2
R3206
47KNU
R3226
R3201
47
BWSELECT
C32102.2uF
C32510.1uFNU
TP32021
100
R3223
C3202.01uF
56pFNU
150K
C3241
R3261
D3261
LOCK
5V
C326162pF
C32090.1uF
.01uFNU
C3235
C3207
22pFNU
C3205.01uF
BWSELECT_VHF_FN_1
C3203
.01uF
100NU
R3263
VCTRL_VHF_FN_1
2
FADJ
4GND
3OUT
1VDD
VCOMOD
NUY3262
OSC_16.8MHZ
R322847KNU
L3232
NU2.2uH
LOCK_VHF_FN_1
VCTRL
TRB C322
R3252
330K
TRB_VHF_FN_1
C3262220pF
1OUTPUT
2SENSE 3
SHUTDOWN
16_8MHz
65V_TAP
5ERROR
7FEEDBACK
GND
4
8INPUTU3211
5V_VHF_FN_1
16_8MHz_VHF_FN_1
VCOMOD_VHF_FN_1
C32220.1uF
0
R3211
390nHL3201
2 1
C3246220pF
16.8MHz
Y3261XTAL
TP32011 8
C
R3242 R32410 100
R320447
0.1uF
C3208
R3221
1.8K
C32280.1uF
5V
5V
200
FRACN
5V Reg
2.5 - 11VDC
5VDC (Locked)
0VDC (Unlocked)
4,95VDC (R)0VDC (T)
4.52VDC (R)2.62VDC (T)
0VDC (R)4.91VDC (T)
+1dBm
13.30VDC
11.28VDC6.83VDC
4.97VDC
1.1 - 4.1VDC
- 2 to +7dBm
3.63 VDC
5VDC
5VDC
5VDC
0VDC2.90VDC
3.42VDC
re 4-22. VHF (136-174MHz) Fractal-N Schematic Diagram
4-37
C3364
18pF
L33418nH
1uH
C33423pF
L3344
VSF
62
1000pF
.2K
C3365
3364
VCOBIAS_1
VCTRL_VHF_VCO_1
R3353
100K
35.5nH
.01uFC3324
L3346
D3341
C3346.01uF15K
R3336
L336268nH
L3351
1uH
.022uFC3352
9V3_VHF_VCO_2
56nHL3361
VCOBIAS_1_VHF_VCO_1
.01uF
VCOMOD
VCTRL
C3347
VCOBIAS_2
20pF
C3345
R3354
VCOMOD_VHF_VCO_1
150K
68pFC3363
VDDA
9V39V3_VHF_VCO_1
100
R3343
VCOBIAS_2_VHF_VCO_1
D3361
39
R3342
1.8pFC3344
L336356nH
L3343180nH
.022uF
9V3_VHF_VCO_3
C3356
VDDA_VHF_VCO_1
VSF_VHF_VCO_1
C3357
1uH
7.5pF
L3364
0VDC (R)1.92VDC (T)
4.52VDC (R)2.62VDC (T)
2.5 - 11VDC
4.54VDC
4.97VDC
Figure 4-23. VHF (136-174MHz)Voltage Controlled Oscillator Schematic Diagram
TXINJ_VHF_VCO_1
5.6pFC3318
D33
2
R3314
R
NU10
C3335.01uF
R3341
220
5.1pFC3306 C3301
15pFNU
PRESC_VHF_VCO_1
C33411000pF
C33370.1uF
R3307220NU
UMC5N
2
4
1
3
Q3303
68nHL3331
C333110pFNU
100nH
.022uF
L3318
C331133
R3335
C33163.3pF
0R3308
1K
R3323
R3362
PRESC
47
330pFNU
C3304
.01uFC3315
C3303
15pF
5.6pFC3362
RXINJ_VHF_VCO_1
L3332100nH
100nHR3303
L3302
2.2K
RXINJ
R330175
C3302
39K
6.8pF
R3355
R3363
20K
5.6pFNU
C3305
R335612K
1uH
L3333
C3334.022uF
.01uF
C3355
NUQ3302
C3314
TXINJ
6.8pF
22NU
R3316
R3306
0L3301
18nH
20KR3351
47KNU BFQ67W
Q3304R3319
C33330.1uF
C33320.1uF
100NU
R3312
C33120.1uF
NU
100nHNU
15TX_EMITTER
1TX_IADJ10TX_OUT
13TX_SW
14
VCC_BUFFERS
18
VCC_LOGIC
L3311
5RX_BASE6RX_EMITTER
2RX_IADJ8RX_OUT
7RX_SW
3SUPER_FLTR
TRB_IN19
16TX_BASE
4COLL_RFIN
20FLIP_IN
11
GN
D_B
UF
FE
RS
9
GN
D_F
LAG
GN
D_L
OG
IC
17
12 PRESC_OUT
U3301VCO IC
1KR3304
R3302
NU
100
R3305220
R3311
100
10KNU
R3317
22
R3315220NU
R3318
C3361
1000pF
220
R3361
Q3301
10K
NU1K
R3321
R3313
.01uFC3336
C3348
L33451uH
.01uF
TRB
C3313330pF
NU
47
1000pF
R3331
C3319
33nHL3317C3317
33pF
TRB_VHF_VCO_1
C3351
R3352.01uF
VSF
12K
VSF
VSF
5
7.44VDC (R)0VDC (T)
9.14VDC (R)0VDC (T)
3.83VDC (R)0VDC (T)
9.12VDC
2.18VDC (R)0VDC (T)
1.49VDC (R)0VDC (T)
0VDC (R)4.91VDC (T)
0VDC (R)4.52VDC (T)
4.52VDC (R)0VDC (T)
4.40VDC
1.53VDC (R)0VDC (T)
0.92VDC (R)0VDC (T)
4.78VDC (R)4.22VDC (T)
4.78VDC (R)4.27VDC (T)
2.56VDC (R)2.66VDC (T)0 - 5dBm (T)
- 2 to 7dBm (T)
4-38
Reverse: 0.254x23.91
Spacing: 0.254
Forward: 0.254x22.674
.685
Center: 1.905x29.03
J3401
C349743pF
20pF
C3498 C349647pF
RXIN_VHF_PA_1
_PA_1
L349151nH
Q3472
1000pF
C3474D3472
D3471
C3473150pF
C3472
RXIN
150pF
L3492 L3493
51nH51nH
FECNTL_2
K9V1
2200
pFC
3502
1uF
RESET
C3505
R350239K
R3501
6.8K
C345310pF NU
RESET_VHF_PA_1
FECNTL_1_VHF_PA_1
1
TP3404
82pF
FECNTL_1
C3467
R349047K
2200pFC3506
R35031K
C35042200pF
C35032200pF
18nHL3445
C345268pF
C345118pFC3450
68pF
C34661000pF
R346315K
23
1
VR3471
51R3473
FECNTL_2_VHF_PA_1
TEMPSENSE_CNTLR_1
100pFC3507
501
1000pFC3465
R34580
NUL347412nH
470
R3471 K9V1_VHF_PA_1
1.2uH
L3471R3474
51
11pFC3464
0NU
R3459150nHL3475
TEMPSENSE
PA_1
PA_1
R3511100K
D3451
R34600
L3476120nH NU
R3509 10K
C349116pFNU
10K NU
R3518
R351020K
18pFC3475
V45 16V5E
XT
17
VA
R1
20
VA
R2
18
VA
R3
24
15VG
VL
6V
LIM
19
11QX 10
RF
IN1
RS
21
RSET31
RX
23T
12
TEMP30
V10 1413CQXDATA28
F168 9
GN
D1
8
GND225
INT
4N
A22
Q
ANO32
BPOS27
CEX29
CI
3
CJ
5
CL
7
CLK26
CQ 12
U3501H99S-4
470pF
C3492
43R3457
R346162
D3452
100KR3517
47pFC3494
36pFC3490
R34640
48nHL3472
51nH
L3494
C3489
1.2uH
L3477 130pF150pFNU
C3488
L34731.2uH
1000pF
9V3
9V3
9V3
C3457
PCIC_MOSBIAS_1
PA_PWR_SET
18pFC3468
PA_PWR_SET_VHF_1
2.77VDC (50W)2.65VDC (28W)
0.75VDC
8.87VDC
3.77VDC (50W)2.68VDC (28W)
Figu
1.52
4x8.
751
1.524x20.6961.905x154.953x8.763
0.1uFC3437
33nHL3444
DATA_VHF
TP3402
Q3502
2200pF
Q3501
2200pF
C3509
C3508
R3406150K
C3458.01uF
100R3415
C3420
20
82pF
R3419
R3404
10K
2200pF
C34341uF
C3501
L341233nH
36pFC3449
Q34215105385Y70:
L3421
C3422
57R01
1000pF NU1uF
C3423
16.96nHL3422
R344210
R3401130
R3403130
TXINJ
9V3
C3443
820
220pF
R3414
R35041K
C34251uF
100R3416
4.22nH
L3413
L3414
27nHC3418
24pF
2200pFC3417
MOSBIAS_2
C344836pF
51
68nH
R3431
L3403
2200pF
6.8KNU
C3416
R3411
100R3405
R3514
620
.022uFC3410
R342568
R342468
C340818pF
C34
13.0
22uF
C3415.022uF
2200pF
C3404
D3455NU
0.1uF
C3424
C3426
L340139nH
2200pF
2200pF
C3401RFIN 6RFOUT1
7RFOUT21 VCNTRL
14 VD1VG1 2
3VG2
GN
D1
5G
ND
212
GN
D3
13G
ND
4
8
NC19
NC210
NC315NC4
16
5105109Z67:
U3401
11 G2
4
1000pFC3445
C34561000pF
L343236.54nH
12.77nHL3423
56R3434
C345556pF
TP3407
C34352200pF
C3402.022uF
5.6KR3412
57R01L344357R01
0.1uFNU
C3438C34391uF
R3413
2200pF
C3400
3.3K
1
CNTLVLTGCNTLVLTG_VHF_PA_1
TP3
TP3403
TXINJ_VHF_PA_1TP3401
1
680
R3508
R3506680
R3505680
R34441MEG
1MEGR3443
R3436120
2200pF
C3428
33pF NU
C3403
R3462
39K
R3513
620
620
R3433
R3516
C34325682pF
1000pFC3441
57R01L3431
0.1uFC3440
NU20pFC3429
180pFC3431
1000pFC3406C3405
1000pF
L341168nH
2200
pFC
3414
30nHL3441
R343251
Q3471
R3409
NU
4.7K
100pFC3459
CLK_VHF_
CSX_VHF_
9V3_VHF_PA_1
PASUPVLTG_VHF_PA_1
NU2200pF
10K
C3477
L3402
R3475
57R01
C344656pF
C344756pF
MRF247Q3441
C34782200pF
R3512100K
C34072200pF
470
R3400
R3417
NU5.6K
LM50
GND3
1
POS
VOUT2
U3502
CLK1
PASUPVLTG
CSX
TP3406
51R3441
R343556
12.77nH
L3433
150KR3408
C3412
.01uFC3421
2200pFC3411.022uF
680
R3507
390pF
2200pF
C3442
C3409
43
R3402
DATA
C3430
120
33pF
R3437
50K NU
RT3471
NU
R3476220
R347743
Q3473
NU
NU
MOSBIAS_2_VHF_PA_1
10uFC3436
NU5.6K
R3418
C3444220pF
R3515
620
0.1uF
C3510
.022uFC3471
S3
S4
68KR3455
D
G
G1G2G3G4
S1
S2
Q3431MRF5015
57R01L3442
10pFC3433
R341068K
A+
9V3
A+
PCIC_MOSBIAS_19V3
VCONT
9V3
VCONT
9V3
R3453820K
C34612200pF
C34600.1uF
9V3
0 to 5dBm
5.45VDC (50W)5.20VDC (28W)
3.70 - 3.90VDC
2.75 - 2.90VDC
re 4-24. VHF (136-174MHz) Power Amplifier Schematic Diagram
4-39
T
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
pF6pFFnF0nF0nFnFnFnF0nFF
0pF8pFpFnFnFnFnFnFnFnF
5pFF
6pFpFpFF
2nF2nFnF
2nFFF
2nFpF
2nFnFnF
2nFnF
2nFnF
2nF2nFpFpFnFFpFF
2nF
Description
C3428 2113741F33 2.2nFC3430 2113740A41 33pFC3431 2113740A61 82pFC3432 2113740A53 220pFC3433 2113740A29 10pFC3434 2113741A45 10nFC3435 2113741F33 2.2nFC3436 2113741A45 10uFC3437 2113741M69 0.1uFC3439 2113741W01 .01uFC3440 2113741M69 1uFC3441 2113740A79 1nFC3442 2111078B57 390FC3443 2111078B51C3444 2111078B51C3445 2113740A79 1nFC3446 2180464E50 56pFC3447 2180464E50 56pFC3448 2111078B36 56pFC3449 2111078B36 56pFC3450 2111078B38 68pFC3451 2111078B31 36pFC3452 2111078B38 68pFC3455 2111078B36 56pFC3456 2113740A79 1nFC3457 2113740A79 1nFC3458 2113741A45 10nFC3459 2180464E20 82pFC3460 2113743E20 100nFC3461 2113741F33 2.2nFC3464 2113740F28 11pFC3465 2113740A79 1nFC3466 2113740A79 1nFC3467 2111078B37 62pFC3471 2113743E07 22nFC3472 2111078B47 150pFC3473 2111078B47 150pFC3474 2113740A79 1nFC3475 2113741F33 18pFC3478 2113741F33 18pFC3489 2111078B45 130pFC3490 2111078B31 36pFC3492 2111078B59 470pFC3494 2111078B34 47pFC3496 2111078B33 43pFC3497 2111078B21 20pFC3498 2111078B34 47pFC3501 2113741F33 2.2nFC3502 2113741F33 2.2nFC3503 2113741F33 2.2nFC3504 2113741F33 2.2nF
Circuit Ref
Motorola Part No. Description
able 4-5. VHF (136-174MHz) Radio Parts List
Circuit Ref
Motorola Part No. Description
3000 2113741F37 3.3nF3001 2113740F19 4.7pF3002 2113740F26 9.1pF3003 2113741F37 3.3nF3004 2113740F45 56pF3005 2113740F51 100pF3006 2113740F45 56pF3007 2113741F37 3.3nF3008 2313741F25 10pF3009 2313741F13 330pF3010 2313741F13 330pF3011 2113741F37 3.3nF3012 2313741F25 10pF3013 2313740F45 56pF3014 2313740F24 7.5pF3015 2313740F45 56pF3016 2313740F51 100pF3017 2313740F42 43pF3019 2313741F25 10pF3020 2313741F25 10pF3021 2313740F53 82pF3022 2313740F49 10nF3033 2313740F20 5.1pF3034 2113740F49 10nF3035 2113740F31 15pF3101 2113740F32 16pF3102 2113740F31 15pF3103 2113740F39 33pF3104 2113743E20 100nF3110 2113740F37 27pF3111 2113743E20 100nF3112 2113740F49 82pF3114 2113740F33 18pF3115 2113740F35 22pF3116 2113743E20 100nF3121 2113743E20 100nF3122 2113743E11 0.1uF3123 2113743E11 39nF3132 2113743E20 39nF3133 2311049A57 10uF3134 2113743E20 100nF3135 2113740L30 33pF3136 2113740L29 30pF3137 2113743E11 39nF3138 2311049A40 2.2uF3139 2113743E20 100nF3140 2113743E20 100nF3141 2113743E20 100nF3142 2113743E20 100nF
C3143 2113740F53 120pFC3144 2113743E20 100nFC3145 2113743E20 100nFC3146 2113741F41 4.7uFC3147 2113743E20 100nFC3151 2113741F49 10nFC3152 2113741F49 10nFC3155 2113741F49 10nFC3202 2113741F49 10nFC3203 2113741F49 10nFC3205 2113741F49 10nFC3206 2311049A57 10uFC3207 2113740F35 22pFC3208 2113743E20 100nFC3209 2113743E20 100nFC3210 2311049A40 2.2uFC3211 2113743E20 100nFC3212 2113743E05 18nFC3213 2311049A40 2.2uFC3214 2311049A09 2.2uFC3214 2311049A09 2.2uFC3221 2113743E07 22nFC3222 2113743E20 100nFC3224 0882422W33 1uFC3225 2113743E20 100nFC3226 2313740F25 8.2pFC3227 2313740F51 100pFC3228 2113743E20 100nFC3231 2113741F49 10nFC3232 2113741F49 10nFC3233 2311049A40 2.2uFC3234 2113741F49 10nFC3242 2113740F59 220pFC3243 2113740F59 220pFC3244 2113740F59 220pFC3245 2113740F59 220pFC3246 2113740F59 220pFC3252 2313741F25 1nFC3253 2311049A56 4.7uFC3254 2113743E20 100nFC3255 2311049A40 2.2uFC3261 2313740L38 68pFC3262 2313740F61 270pFC3263 2313740F07 1.5pFC3302 2113740F23 6.8pFC3303 2113741F49 10nFC3306 2113740F20 5.1pFC3311 2113743E07 22nFC3314 2113740F23 6.8pFC3315 2113740F31 15pFC3316 2113740F15 3.3pF
Circuit Ref
Motorola Part No. Description
C3317 2113740F39 33C3318 2113740F21 5.C3319 2113741F25 1nC3324 2113741F49 10C3332 2113743E20 10C3333 2113743E20 10C3334 2113743E07 22C3335 2113741F49 10C3336 2311041F49 10C3337 2113743E20 10C3341 2113741F25 1nC3342 2113740L05 3.C3344 2113740F09 1.C3345 2113740L25 20C3346 2311041F49 10C3347 2311041F49 10C3348 2311041F49 10C3351 2311041F49 10C3352 2113743E07 22C3355 2311041F49 10C3356 2113743E07 22C3357 2113740F24 7.C3361 2113741F25 1nC3362 2113740F21 5.C3363 2113740F47 68C3364 2113740F33 18C3365 2113741F25 1nC3400 2113741F33 2.C3401 2113741F33 2.C3402 2113743E07 22C3404 2113741F33 2.C3405 2113740A79 1nC3406 2113740A79 1nC3407 2113741F33 2.C3408 2113740F33 18C3409 2113741F33 2.C3410 2113743E07 22C3411 2113743E07 22C3412 2113741F33 2.C3413 2113743E07 22C3414 2113741F33 2.C3415 2113743E07 22C3416 2113741F33 2.C3417 2113741F33 2.C3418 2113740F36 24C3420 2113740F49 82C3421 2113741A45 10C3422 2113740A79 1nC3424 2113741A45 68C3425 2113928E01 1uC3426 2113741F33 2.
Circuit Ref
Motorola Part No.
4-40
C3C3C3C3C3C3CRCRCR
CRCRCRCRCRCRD3D3D3D3D3D3D3D3D3D3D3D3D3D3D3FL3FL3FL3FL3FL3FL3L30L30L30L31L31L31L31L32L32L33L33L33L33L33
CiR
ower
Description
R3154 0662057A73 10KR3201 0662057A17 47R3203 0662057A17 47R3204 0662057A17 47R3211 0662057B47 0R3221 0662057A55 1KR3222 0662057A49 1KR3223 0662057A25 100R3227 0662057A97 100KR3241 0680539A25 100R3242 0662057B47 0R3251 0662057B05 200KR3252 0662057B10 330KR3261 0662057B02 150KR3301 0662057A22 75R3302 0662057A25 100R3303 0662057A57 2KR3304 0662057A49 1KR3308 0662057B47 0R3311 0662057A25 100R3316 0662057B47 0R3318 0662057A09 22R3321 0662057A73 10KR3323 0662057A49 1KR3331 0662057A17 47R3335 0662057A13 33R3336 0662057A77 15KR3341 0662057A33 220R3342 0662057A15 39R3343 0662057A25 100R3351 0662057A80 20KR3352 0662057A75 12KR3353 0662057A97 100KR3354 0662057B02 150R3355 0662057A80 20KR3356 0662057A75 12KR3361 0662057A33 220R3362 0662057A17 47R3363 0662057A87 39KR3364 0662057A57 2KR3400 0662057A41 470R3401 0662057A28 130R3402 0662057A16 43R3403 0662057A28 130R3404 0662057A73 10KR3405 0662057A25 100R3406 0662057B02 150KR3408 0662057B02 150KR3410 0662057A73 10KR3412 0662057A67 5KR3413 0662057A61 3K
Circuit Ref
Motorola Part No. Description
505 2311049A07 1uF506 2113741F33 2.2nF507 2113740F51 100pF508 2113741F33 2.2nF509 2113741F33 2.2nF510 2113743E20 100nF3301 4802245J42 Ring Quad Diode3302 4805129M96 SMBV10323303 4880154K03 Dual Common Anode Cath-
ode411 4802245J47 Schottky Diode412 4802245J47 Schottky Diode413 4802245J47 Schottky Diode440 4813833C02 Dual Diode Common Cathode501 4880107R01 Rectifier503 4805729G49 LED Red/Yel000 4813833C02 Diode Dual001 4805649Q13 Varactor003 4880154K03 Diode Dual004 4805649Q13 Varactor031 4886143B01 Diode Mixer101 4880154K03 Triple Diode201 4802233J09 Triple Diode261 4802245J22 Varactor341 4805649Q13 Dual Varactor361 4805649Q13 Dual Varactor362 4862824C01 Varactor451 4882290T02 Diode, Hot Carrier452 4882290T02 Diode, Hot Carrier471 4802482J02 Diode, Pin472 4802482J02 Diode, Pin101 9180112R16 Crystal Filter, 44.85MHz102 9180112R16 Crystal Filter, 44.85MHz111 9180469V04 Filter, 455kHz112 9180469V06 Filter, 455kHz114 9180469V06 Filter, 455kHz115 9180469V03 Filter, 455kHz02 2462587T23 470nH25 2462587T17 150uH32 2462587T17 150uH00 2462587T22 390nH01 2462587T25 620uH11 2462587T25 620nH12 2462587T25 620nH01 2462587T23 390nH31 2462587Q42 2.2uH01 2462587N44 18nH02 2462587N53 100nH17 2462587V28 33nH18 2462587V34 100nH31 2462587H32 68nH
rcuit ef
Motorola Part No. Description
L3332 2462587V15 100nHL3333 2462587Q47 1uHL3341 2484562T13 8nHL3343 2462587N56 180nHL3344 2462587N68 1uHL3345 2460591N68 1uHL3346 2484562T18 35.5nHL3351 2462587N68 1uHL3361 2462587N50 56nHL3362 2462587N51 68nHL3363 2462587N50 56nHL3364 2462587N68 1uHL3401 2462587X48 39nHL3402 2484657R01 Ferrite BeadL3403 2462587T13 68nHL3411 2462587T13 68nHL3412 2462587X47 33nHL3413 2462587X46 27nHL3414 2460591A01 4.22nHL3421 2462587R01 Ferrite BeadL3422 2460591C73 100nHL3423 2460591B73 100nHL3431 2462587R01 Ferrite BeadL3432 2460591F77 35.5nHL3433 2460591B73 12.77nHL3441 2460591E77 30nHL3442 2462587R01 Ferrite BeadL3443 2462587R01 Ferrite BeadL3444 2460591X03 nHL3445 2460591X01 nHL3471 2462587X69 1.2uHL3472 2460591X05 48nHL3473 2462587X69 1.2uHL3474 2462587N42 12nHL3475 2462587N55 150nHL3477 2462587X69 1.2uHL3491 2460591B01 51nHL3492 2460591B01 51nHL3493 2460591B01 51nHL3494 2460591B01 51nHQ3001 4813827A07 NPNQ3002 4813824A17 PNPQ3101 4813827A07 NPNQ3102 4813827A07 NPNQ3151 4880048M01 NPNQ3152 4880048M01 NPNQ3301 4813827A07 NPNQ3303 4802245J50 Dual NPN/PNPQ3304 4805218N63 RFQ3421 5105385Y70 LDMOSQ3431 4805537W01 MOS
Circuit Ref
Motorola Part No. Description
Q3441 4884411L04 RF PQ3471 480048M01 NPNQ3472 4805128M27 PNPQ3501 4813824A17 PNPQ3502 4813824A10 NPNR3000 0662057A53 1KR3001 0662057A97 100KR3002 0662057A43 560R3003 0662057A49 1KR3004 0662057A53 1KR3006 0662057A39 390KR3007 0662057A12 30R3008 0662057A37 390R3009 0662057A97 100KR3010 0662057A45 680R3011 0662057A65 4KR3012 0662057A49 1KR3013 0662057A61 3KR3014 0662057A18 51R3015 0662057A01 10R3016 0662057A29 150R3017 0662057A29 150R3018 0662057A09 22R3019 0662057A89 47KR3021 0662057A43 560R3031 0662057A18 51R3033 0662057B47 0R3101 0662057A75 12KR3102 0662057A01 10R3105 0662057A25 100R3106 0662057A83 27KR3107 0662057A69 6KR3108 0662057A44 620R3111 0662057A75 12KR3112 0662057A01 10R3115 0662057A39 390R3116 0662057A37 330R3117 0662057A83 27KR3118 0662057A69 6KR3130 0662057A18 51R3132 0662057A77 15KR3133 0662057A71 8KR3134 0662057A73 10KR3135 0662057A51 1KR3144 0662057A58 2KR3145 0662057A61 3KR3146 0662057A45 680R3147 0662057A75 12KR3151 0662057A73 10KR3152 0662057A73 10KR3153 0662057A73 10K
Circuit Ref
Motorola Part No.
4-41
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTTUU
* Motorola Depot Servicing only
3414 0662057T71 8203415 0662057A25 1003416 0662057A25 1003419 0662057C34 203424 0662057K21 683425 0662057K21 683431 0662057M18 513432 0662057M18 513433 0662057C45 563434 0662057C45 563435 0662057C45 563436 0662057T51 1203437 0662057T51 1203441 0662057M18 513442 0662057C27 103443 0662057D48 1M3444 0662057D48 1M3453 0662057B20 820K3455 0662057A93 68K3457 0662057M163460 0662057C01 03461 0662057M20 623462 0662057A87 39K3463 0662057D04 15K3464 0662057C01 03471 0662057A41 4703473 0662057M18 513474 0662057M18 513475 0662057A73 10K3490 0662057A89 47K3501 0662057A69 6K3502 0662057A87 39K3503 0662057A49 1K3504 0662057A49 1K3505 0662057C71 6803506 0662057C71 6803507 0662057C71 6803508 0662057C71 6803509 0662057A73 10K3510 0662057A80 20K3511 0662057A97 100K3512 0662057A97 100K3513 0662057A69 6K3514 0662057A69 6K3515 0662057A69 6K3516 0662057A69 6K3517 0662057A97 100K3001 2508396X02 Transformer3002 2508397X02 Transformer3101 5186144B01 SA6163111 5113805A86 Quad Analog Mux/Demux
Circuit Ref
Motorola Part No. Description
U3115 5113805A86 Quad Analog Mux/DemuxU3201 5185963A27 Ground Fault ProtectionU3211 5185963A33 Voltage RegulatorU3301 5105750U54 VCO BufferU3401 5105109Z67 LDMOS UHF/VHF DriverU3501 5105750U54 Power ControlU3502 5185963A15 Temperature SensorVR3471 4813830A15 Diode, 5.6VT3001 2508396X02 TransformerT3002 2508396X02 TransformerY3101 4880606B09 Crystal Oscillator, 44.395MHzY3102 9186145B02 Crystal Filter, 45.85MHzY3261 4880114R04 Crystal Oscillator, 16.8MHz
Circuit Ref
Motorola Part No. Description
4-42
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CDM™ and PRO SERIES™
Mobile Radios
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CA, Motorola, Professional Radio, CDM Series and CDMModel numbers, PRO Series and PRO Series Model num-bers are trademarks of Motorola.© 1999 Motorola, Inc. All rights reserved. Printed in USA.
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