Fluke 12B Service Manual - elso.sk

®

12B18

7 SeriesMeters

Service Manual

PN 602730August 1996© 1996 Fluke Corporation, All rights reserved. Printed in U.S.A.All product names are trademarks of their respective companies.

riešenia na presné meranie

http://www.elso.sk

maros

riesenia - adresa - times

maros

pure vector logo

LIMITED WARRANTY & LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material and workmanship undernormal use and service. The warranty period for Models 7-300, 7-600, and 12B is two years andbegins on the date of shipment. The warranty period for Model 18 is three years and begins on thedate of shipment. Parts, product repairs and services are warranted for 90 days. This warrantyextends only to the original buyer or end-user customer of a Fluke authorized reseller, and doesnot apply to fuses, disposable batteries or to any product which, in Fluke’s opinion, has beenmisused, altered, neglected or damaged by accident or abnormal conditions of operation orhandling. Fluke warrants that software will operate substantially in accordance with its functionalspecifications for 90 days and that it has been properly recorded on non-defective media. Flukedoes not warrant that software will be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-usercustomers only but have no authority to extend a greater or different warranty on behalf of Fluke.Warranty support is available if product is purchased through a Fluke authorized sales outlet orBuyer has paid the applicable international price. Fluke reserves the right to invoice Buyer forimportation costs of repair/replacement parts when product purchased in one country is submittedfor repair in another country.

Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the purchase price, free ofcharge repair, or replacement of a defective product which is returned to a Fluke authorizedservice center within the warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center or send theproduct, with a description of the difficulty, postage and insurance prepaid (FOB Destination), tothe nearest Fluke authorized service center. Fluke assumes no risk for damage in transit.Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOBDestination). If Fluke determines that the failure was caused by misuse, alteration, accident orabnormal condition of operation or handling, Fluke will provide an estimate of repair costs andobtain authorization before commencing the work. Following repair, the product will be returned tothe Buyer transportation prepaid and the Buyer will be billed for the repair and returntransportation charges (FOB Shipping Point).

THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALLOTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANYIMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL ORCONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHERARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE ORANY OTHER THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, orexclusion or limitation of incidental or consequential damages, the limitations and exclusions ofthis warranty may not apply to every buyer. If any provision of this Warranty is held invalid orunenforceable by a court of competent jurisdiction, such holding will not affect the validity orenforceability of any other provision.

Fluke Corporation Fluke Europe B.V.P.O. Box 9090 P.O. Box 1186Everett, WA 98206-9090 5602 BD EindhovenU.S.A. The Netherlands

5/94


http://www.elso.sk

i

Table of Contents

Chapter Title Page

1 Introduction and Specifications........................................................ 1-1

Introduction ....................................................................................................... 1-1Specifications .................................................................................................... 1-1

2 Theory of Operation........................................................................... 2-1

Introduction ....................................................................................................... 2-1Analog Measurement IC (U1) ........................................................................... 2-1Microcomputer IC (U2)..................................................................................... 2-3Automatic Selection Input Resistance............................................................... 2-3

3 Maintenance ....................................................................................... 3-1

Introduction ....................................................................................................... 3-1Disassembly and Reassembly............................................................................ 3-1Cleaning............................................................................................................. 3-6Performance Tests ............................................................................................. 3-6Calibration Adjustments for Models 12B and 18.............................................. 3-9Calibration Adjustments for Models 7-300 and 7-600...................................... 3-10

4 Parts and Schematics........................................................................ 4-1

Introduction ....................................................................................................... 4-1How to Obtain Parts .......................................................................................... 4-1Manual Status Information................................................................................ 4-2Newer Instruments............................................................................................. 4-2Parts Lists, Drawings, and Schematics.............................................................. 4-2


http://www.elso.sk

12/18/7 ServiceService Manual

ii


http://www.elso.sk

iii

List of Tables

Table Title Page

1-1. Specifications......................................................................................................... 1-22-1. Electrical Components on Main PCA.................................................................... 2-22-2. U1 Pinout Table..................................................................................................... 2-43-1. Required Equipment .............................................................................................. 3-63-2. Performance Tests for Models 7-300 and 7-600 ................................................... 3-73-3. Performance Tests for Models 12B and 18 ........................................................... 3-84-1. Manual Status Information .................................................................................... 4-24-2. Models 12B, 18, and 18/AL Final Assembly ........................................................ 4-34-3. Models 7-300 and 7-600 Final Assembly.............................................................. 4-54-4. A1 Main PCA ........................................................................................................ 4-7


http://www.elso.sk


iv


http://www.elso.sk

v

List of Figures

Figure Title Page

2-1. Typical Automatic Selection Input Resistance with DC Volts Function Selected 2-33-1. Models 12B and 18 Disassembled Unit................................................................. 3-33-2. Models 7-300 and 7-600 Disassembled Unit......................................................... 3-43-3. Removing and Reinserting the Printed Circuit Assembly .................................... 3-53-4. Calibration Adjustment.......................................................................................... 3-104-1. Models 12B and 18 Final Assembly...................................................................... 4-44-2. Models 7-300 and 7-600 Final Assembly.............................................................. 4-64-3. Models 12B, 18, 7-300, and 7-600 Main PCA Components ................................. 4-94-4. Model 12B Schematic............................................................................................ 4-104-5. Model 18 Schematic .............................................................................................. 4-124-6. Model 7-300 Schematic ......................................................................................... 4-144-7. Model 7-600 Schematic ......................................................................................... 4-16


http://www.elso.sk


vi


http://www.elso.sk

MULTIMETER SAFETYThe Fluke 7-300, 7-600, 12B, and 18 Meters have been designed and tested according to IECPublication 1010, Safety Requirements for Electronic Measuring Apparatus. This manual containsinformation and warnings that must be followed to ensure safe operation and keep the meter insafe condition. Use of this equipment in a manner not specified herein may impair the protectionprovided by the equipment.

These multimeters comply with part 15 of the FCC Rules. Operation is subject to the following twoconditions: (1) these meters may not cause harmful interference, and (2) these meters mustaccept any interference received, including interference that may cause undesired operation.

Some common international electrical symbols are shown below:

AC: ALTERNATING CURRENT DANGEROUS VOLTAGE

DC: DIRECT CURRENT EARTH GROUND

EITHER AC OR DC CURRENT SEE EXPLANATION IN MANUAL

X FUSEDOUBLE INSULATION FORPROTECTION AGAINST ELECTRICSHOCK

Before using the meter, read the following safety information carefully. In this manual, "Warning" isreserved for conditions and actions that pose hazard(s) to the user; "Caution" is reserved forconditions and actions that may damage your meter.

• Avoid working alone.

• Follow all safety procedures for equipment being tested.

• Inspect the test leads for damaged insulation or exposed metal. Check test lead continuity.Damaged leads should be replaced.

• Be sure the meter is in good operating condition.

• Select the proper function for your measurement.

• To avoid electrical shock, use caution when working above 60V dc or 30V ac rms.

• Disconnect the live test lead before disconnecting the common test lead.

• Disconnect the power and discharge high-voltage capacitors before testing in resistance anddiodes or continuity.

• When making a current measurement, turn the circuit power off before connecting the meterin the circuit.

• Check meter fuses before measuring transformer secondary or motor winding current. Anopen fuse may allow high voltage build-up, which is potentially hazardous.

• Use clamp-on probes when measuring circuits exceeding 10 amps.

• When servicing the meter, use only the replacement parts specified.

• Do not allow the meter to be used if it is damaged or if its safety features are impaired.


http://www.elso.sk

1-1

Chapter 1Introduction and Specifications

Introduction

PWarningService procedures described herein should be performed byqualified personnel only. To avoid electric shock, perform onlythose service procedures described in this manual.

The 12B, 18, 7 Series Service Manual provides the information necessary to service theFluke Model 12B, Model 18, and Models 7-300 and 7-600 meters. This manual providesthe following information:

• Specifications (Chapter 1)

• Basic theory of operation (Chapter 2)

• Disassembly and reassembly (Chapter 3)

• Performance tests (Chapter 3)

• Calibration (Chapter 3)

• Illustrated parts lists and schematic diagrams (Chapter 4)

Refer to the users instruction sheet for operating instructions.

SpecificationsSpecifications are in Table 1-1. Accuracy is specified for a period of one year aftercalibration, at 18ºC to 28ºC (64ºF to 82ºF) with relative humidity to 90%. ACconversions are ac-coupled, average responding, and calibrated to the rms value of a sinewave input.


http://www.elso.sk

12B/18/7 SeriesService Manual

1-2

Accuracy specifications are given as follows:

±([% of reading] + [number of least significant digits])

Table 1-1. Specifications

Maximum Voltage Between anyTerminal and Earth Ground(excludes 10% tolerance)

600V ac rms or dc

Display 3-3/4-digits, 4000 counts, updates 4/sec

Operating Temperature -10°C to 50°C

Storage Temperature -30°C to 60°C indefinitely (to -40°C for 100 hrs)

Temperature Coefficient 0.1 x (specified accuracy)/°C (<18°C or >28°C)

Relative Humidity 0% to 90% (-10°C to 35°C)

0% to 70% (35°C to 50°C)

Battery Type 9V, NEDA 1604 or IEC 6F22

Battery Life 650 continuous hours with alkaline; 600 hours for Model 7450 continuous hours with carbon-zinc; 400 hours for Model 7

Shock, Vibration 1 meter shock. Per MIL-T-28800D for a Class 3 Instrument

Size (HxWxL) 1.35 in x 2.75 in x 5.55 in(3.46 cm x 7.05 cm x 14.23 cm)

Weight 10 oz (286g)

EMI Regulations Complies with FCC Part 15, Class B, and VDE 0871B.

Safety Designed to Protection Class II requirement of UL1244,ANSI/ISA-S82.01 - 1988, CSA C22.2 No 231, and VDE 0411, andIEC 1010-1 overvoltage category III (CAT III), 600V.

Trademark of TÜV Product Services.IEC 348 certification; designed tocomply with EN 61010-1: 1993.


http://www.elso.sk

Introduction and SpecificationsSpecifications 1

1-3

Table 1-1. Specifications (continued)

Accuracy (50 to 400 Hz)

Function Range Resolution 7-300 7-600 12B/18

f 4000 mV1

4.000V

40.00V

300.0V

400.0V

600.0V

1 mV

0.001V

0.01V

0.1V

0.1V

1V

NA

NS2

±(2.9%+3)

±(2.9%+3)

NA

NA

NA

NS2

±(2.9%+3)

NA

±(2.9%+3)

±(2.9%+3)

±(1.9%+3)

±(1.9%+3)

±(1.9%+3)

NA

±(1.9%+3)

±(1.9%+3)

E 4000 mV1

4.000V

40.00V

300.0V

400.0V

600V

1 mV

0.001V

0.01V

0.1V

0.1V

1V

NA

NS2

±(1.5%+1)

±(1.5%+1)

NA

NA

NA

NS2

±(1.5%+1)

NA

±(1.5%+1)

±(1.5%+1)

±(0.9%+2)

±(0.9%+2)

±(0.9%+1)

NA

±(0.9%+1)

±(0.9%+1)

J 400.0Ω

4.000 kΩ

40.00 kΩ

400.0 kΩ

4.000 MΩ

40.00 MΩ

0.1Ω

0.001 kΩ

0.01 kΩ

0.1 kΩ

0.001 MΩ

0.01 MΩ

±(1.5%+2)

NA

NA

NA

NA

NA

±(1.5%+2)

NA

NA

NA

NA

NA

±(0.9%+2)

±(0.9%+1)

±(0.9%+1)

±(0.9%+1)

±(0.9%+1)

±(1.5%+3)

K 1.000 µF

10.00 µF

100.0 µF

1000 µF

10000 µF

0.001 µF

0.01 µF

0.1 µF

1 µF

10 µF

NA

NA

NA

NA

NA

NA

NA

NA

NA

NA

±(1.9%+2)

±(1.9%+2)

±(1.9%+2)

±(1.9%+2)

±(10%+90)typical

LM3 2.000V 0.001V NA NA ±(0.9%+2)

1. The 4000 mV range can be entered only in the manual range mode. Use the 4000 mV range withaccessories. The 4000 mV range is not available on the Model 7.

2. Not specified for the Model 7.

3. The beeper is guaranteed to come on at <25Ω and turn off at >250Ω. The meter detects opens orshorts of 250 µs or longer. These values are not specified for the Model 7.


http://www.elso.sk


1-4

Table 1-1. Specifications (continued)

FunctionOverload

Protection1

InputImpedance(Nominal)

Common ModeRejection Ratio

(1 kΩUnbalanced)

2Normal Mode

Rejection2

f600V rms or dc >5 MΩ <100pF

2

Automatic Selectionand LoZ = >2 kΩ<200pF(ac coupled)

3

>60 dB at dc 50 or60 Hz

E600V rms or dc >10MΩ <100pF

2

Automatic Selectionand LoZ = >2 kΩ<200pF

3

>100 dB at dc, 50 or60 Hz

>50 dB at 50 Hz or60 Hz

Open CircuitTest Voltage

Full Scale VoltageTo 4.0 MΩ 40 MΩ

Short CircuitCurrent

J600V rms or dc <1.5V dc <450 mV

dc<1.5V dc <500 µA

L2 600V rms or dc 2.4-3.0V dc 2.400V dc 0.95 mA (typical)

1. 3 x 106 V Hz maximum.

2. Does not apply to Model 7.

3. ~2 kΩ input impedance up to 50V. Impedance increases with input voltage to >300 kΩ at 600V.

MIN MAX Recording Accuracy and Response Time (Models 12B and 18)

Specified accuracy of the measurement function ±12 digits for changes >200 ms in duration(±40 digits in ac). Typical 100 ms response to 80%.

MIN MAX Recording with Elapsed Time (Models 12B and 18)

Elapsed Time: 0 to 100 hours (99.59)

Resolution: 1 minute

Accuracy: 0.3% typical

Continuity Capture (Model 12B)(Open/Short Capture Model 18)

Detects opens or shorts of 250 µs or longer.


http://www.elso.sk

2-1

Chapter 2Theory of Operation

IntroductionChapter 2 provides a basic theory of operation for the Models 7, 12B, and 18 Meters.Electrical components on the printed circuit assembly (A1 Main PCA) are listed in Table2-1. Refer to Figure 4-3 for the location of these components and Figures 4-4 through4-7 for the schematic diagrams.

The analog/digital IC (U1) performs the electrical measurement functions. See Table 2-2for pin names and descriptions. The microcomputer (U2) controls U1, the LCD (U3),and the user interface. Discrete components support U1 and U2, provide referencestandards for measurements, and provide input overload protection.

Analog Measurement IC (U1)U1 performs the following analog functions: a/d converter, ac to dc converter,Automatic Selection circuitry, active filter, passive filter, power supply, rangeconfiguration circuitry, signal routing circuitry, beeper driver, digital control circuitry,and digital U2 interface circuitry.

The a/d converter is a patented dual-rate, dual-slope converter. The dual-rate conversionallows for MIN MAX (Models 12B and 18 only) and fast autoranging functions. The acto dc converter is full-wave rectified and average-responding. The active and passivefilters are two-pole and one-pole low-pass filters (respectively) that are used for signalfiltering prior to a/d conversion. The internal power supply generates a ground voltagenominally +3V relative to VSS. Range configuration circuitry connects the Z1 resistornetwork as needed for different ranges. Routing circuitry connects the various signalconditioning circuits as needed. The a/d converter and a counter are controlled by a statemachine.


http://www.elso.sk


2-2

Table 2-1. Electrical Components on Main PCA

Circuit and Function Component Designator(s)

Analog Measurement IC

Microcomputer IC

Input Divider and Ohms Reference Resistor Network

Input Divider AC Coupling Capacitor

J2 Input Receptacle Voltage Sense Resistor

J1 Input Receptacle Voltage Sense Resistor

Reference Voltage for Volts Measurements

A/D Converter Integrate Capacitor

A/D Converter Autozero Capacitor

A/D Converter Gain Resistors

Active Filter Components

Passive Filter Components

AC to DC Converter Gain Resistors

AC to DC Converter AC Coupling Capacitor

Bias Current Setting Resistor

DGND-VSS Voltage Setting Resistors

Power Supply Bypass Capacitors

Reverse Battery Protection

System Clock

Automatic Selection Input Current Limiters

Automatic Selection Input Positive Temp. Coef. Thermistor

Automatic Selection Input Voltage Clamp Circuit

Automatic Selection Input Fusible Resistor

Microcomputer Reset Circuit

On/Off and Automatic Selection Select Slide Switch

Beeper

Beeper Current Limiter

Slide Switch Protection

Switch Sense Bypass Capacitor

Input Divider Bypass Capacitor

Zero Ohm Jumpers

U1

U2

Z1

C14

R17

R14

VR1, R4, R5, R6, R26

C2

C1

R1, R3, R15

R7, R8, C5, C6

R9, C7

R11, R12, R13

C8

R2

R10, R24

C3, C15

CR1

Y1

R16, R18, R29

RT1

Q1, Q2, CR2, R28

R19

R23, R25, C10, C13, CR3

S1

LS1

R22

E1

C9

C16

R20, R21, R27


http://www.elso.sk

Theory of OperationMicrocomputer IC (U2) 2

2-3

Finally, digital circuitry interfaces with U2 via a parallel address and bidirectional databus.

Voltage is measured using a ratio comparison of the unknown voltage to the referencevoltage (REFI pin). Resistance is calculated using a ratio comparison of the voltageacross the unknown resistor to the voltage across a precision reference resistor, with thesame current in both. Capacitance is measured by determining the amount of chargeadded for a given dc voltage change.

Microcomputer IC (U2)U2 writes range settings and a/d converter information to U1. U2 reads a/d converterresults and status information. This includes the low battery check, slide-switch position,continuity check, and Automatic Selection data. The microcomputer performs mathoperations on the raw data from U1 and configures it for the LCD. U2 also reads push-button inputs. Finally, the 2.1 MHz clock signal at U2 is divided down to 131 kHz andsent to U1 (CLK pin) for the counter.

Automatic Selection Input ResistanceAs shown in Figure 2-1, the input resistance for the Automatic Selection function is non-linear. The data in the graph are for the volts dc function (any range) and are the steadystate values obtained after the PTC thermistor (RT1) has stabilized. The data also applyfor the volts ac function.

500

100

50

10

5

1

0.1 0.5 1.0 5.0 10.0 50.0 500.0

Sm

all S

igna

l Inp

ut T

esis

tanc

e (k

Ω)

|Vin| (Vdc)

Positive DCV Input

Negative DCV Input

as01f.eps

Figure 2-1. Typical Automatic Selection Input Resistance with DC Volts Function Selected


http://www.elso.sk


2-4

Table 2-2. U1 Pinout Table

Pin No. Pin Name Description

1 READ (L) When low (VSS), data from addressed register can be read

2 ADR5 Most significant address bus line

3 ADR4 Bit 4 of parallel address bus




7 ADR0 Least significant address bus line

8 VSS Negative power supply voltage (-3V relative to DGND)

9 VDD Positive power supply voltage for analog only (Vbat-3V=VDD-DGND)

10 K0 1st a/d gain resistor pin, generally for de-integrate

11 K1 2nd a/d gain resistor pin, generally for integrate

12 K2 3rd a/d gain resistor pin, for autozero

13 AZ A/D converter pin for autozero capacitor

14 INT A/D converter pin for integrator capacitor

15 REFI 1.00V reference voltage for de-integrate signal in volts

16 BIAS Pin for analog bias current generator reference resistor

17 REFH Connects 1.235V reference voltage to on-chip circuits

18 BGND Not used

19 AFO Active filter high output pin (2-pole, low-pass filter)

20 FAO Internal active filter node

21 FAI Internal active filter node

22 AFI Active filter high input pin


24 PFO Passive filter low output pin (1-pole, low-pass filter)

25 AVAOM Absolute value amp (full wave rectified) negative output pin

26 AVAOP Absolute value amp (full wave rectified) positive output pin

27 AVAM Absolute value amp inverting input (summing node)

28 ACBO AC buffer output

29 VSET Voltage divider sense for power supply

30 PSTEST Pin to disable on-chip power supply for U1 testing

31 DGND Ground power supply pin connected to common (digital ground)

32 AGND Common input sense line. No current flow (analog ground).

33 CLAMP Op amp output voltage for Q2 clamp transistor base drive

34 AMPS Shunt resistor sense pin. Unused in Fluke Model 18.

35 ISRC Current source pin for continuity, ohms, and capacitance

36 SWS Slide-switch position sense pin. Internal pull down.

37 OHMS Ohms sense resistor input pin. Sense voltage at J2.


39 ACV AC volts input pin from 10 MΩ resistor


http://www.elso.sk

Theory of OperationAutomatic Selection Input Resistance 2

2-5

Table 2-2 U1 Pinout Table (continued)

Pin No. Pin Name Description

40 APV0 DC volts input pin from 10 MΩ resistor

41 DIVLO Input divider (Z1) common (low) pin

42 APV1 10-to-1 voltage divider and 1 MΩ reference resistor input

43 APV2 100-to-1 voltage divider and 100 kΩ reference resistor input

44 APV3 1000-to-1 voltage divider and 10 kΩ reference resistor input

45 APV4 10,000-to-1 voltage divider and 1 kΩ reference resistor input

46 GND Ground power supply pin connected to common (digital ground)

47 DATA3 Most significant bidirectional data bus line

48 DATA2 Bit 2 of parallel data bus

49 DATA1 Bit 1 of parallel data bus

50 DATA0 Least significant bidirectional data bus line

51 N/C No connection

52 BEEPER (L) One of two beeper drive lines. Voltage swings VDD to VSS.

53 VSS Negative power supply line (-3V relative to DGNG)

54 VSS Negative power supply line (-3V relative to DGNG)

55 CLK System clock line from U2. 131,072 Hz.

56 BCLK Beeper frequency (2.3 kHz) clock line from U2

57 TESTCLK Test clock pin for U1 testing

58 BEEPER One of two beeper drive lines. Voltage swings VDD to VSS.

59 N/C No connection

60 WRITE (L) When driven low (VSS), data is written to addressed register


http://www.elso.sk


2-6


http://www.elso.sk

Some semiconductors and custom IC's can bedamaged by electrostatic discharge duringhandling. This notice explains how you canminimize the chances of destroying such devicesby:

1. Knowing that there is a problem.2. Leaning the guidelines for handling them.3. Using the procedures, packaging, and bench techniques that are recommended.

The following practices should be followed to minimize damage to S.S. (static sensitive) devices.

1. MINIMIZE HANDLING

2. KEEP PARTS IN ORIGINAL CONTAINERS UNTIL READY FOR USE.

3. DISCHARGE PERSONAL STATIC BEFORE HANDLING DEVICES. USE A HIGH RESIS- TANCE GROUNDING WRIST STRAP.

4. HANDLE S.S. DEVICES BY THE BODY.

static awarenessA Message From

Fluke Corporation


http://www.elso.sk

5. USE STATIC SHIELDING CONTAINERS FOR HANDLING AND TRANSPORT.

6. DO NOT SLIDE S.S. DEVICES OVER ANY SURFACE.

7. AVOID PLASTIC,VINYL AND STYROFOAM IN WORK AREA.

8. WHEN REMOVING PLUG-IN ASSEMBLIES HANDLE ONLY BY NON-CONDUCTIVE EDGES AND NEVER TOUCH OPEN EDGE CONNECTOR EXCEPT AT STATIC-FREE WORK STATION. PLACING SHORTING STRIPS ON EDGE CONNECTOR HELPS PROTECT INSTALLED S.S. DEVICES.

9. HANDLE S.S. DEVICES ONLY AT A STATIC-FREE WORK STATION.

10. ONLY ANTI-STATIC TYPE SOLDER- SUCKERS SHOULD BE USED.

11. ONLY GROUNDED-TIP SOLDERING IRONS SHOULD BE USED.

PORTIONS REPRINTEDWITH PERMISSION FROM TEKTRONIX INC.AND GERNER DYNAMICS, POMONA DIV.

Dow Chemical


http://www.elso.sk

3-1

Chapter 3Maintenance

IntroductionChapter 3 covers the following:

• Disassembly and reassembly

• Cleaning

• Performance tests

• Calibration

Disassembly and Reassembly

P WarningTo avoid electrical shock, remove test leads and any inputsignals before opening the case.

CautionTo avoid contamination from the fingers, handle the pca by theedges or wear gloves. PCA contamination can cause failures inhumid environments. This meter contains components that canbe damaged by static discharge. To avoid damaging thesecomponents when servicing the meter, take precautionsindicated on the "Static Awareness" at the beginning ofChapter 3.


http://www.elso.sk


3-2

Referring to Figures 3-1 and 3-2 as necessary, disassemble the meter as follows. APhillips-head screwdriver and small flat-blade screwdriver are required.

1. Remove the test leads and set the slide switch or rotary knob to OFF.

2. Remove the Phillips-head screws (H1-4) from the case bottom (MP8).

3. Separate the case top (MP2) from the case bottom.

4. TO REPLACE THE BATTERY: Lift the battery from the case bottom and insert anew 9V battery (NEDA 1604, 6F22, or 006P). Be sure the positive and negativebattery posts are oriented correctly.

5. TO REMOVE THE PCA (A1): Insert a small, flat-blade screwdriver between theedge of the case top and the pca where shown in Figure 3-3. Gently unsnap a side ofthe case top from the pca. Repeat on the other side of the pca. Unsnap the case fromthe top of the pca last.

6. LIFT THE PCA FROM THE CASE TOP BY ITS EDGES. If the elastomeric contactstrips (J3, J4)* for the switch assembly (S2)* and LCD (U3) are stuck to the pca,remove them without touching the conductive edges.

TO REINSERT THE PCA: Important: First make sure that the slide-switchactuator (MP5), the slide switch (S1), and the rotary knob (for the 12B and 18) arein the OFF position. Place the pca over the four screw posts in the case top, thenpress gently on the center of the pca while using the small flat-edge screwdriver toshoehorn the pca under the snap on a side of the case top. Repeat on the other sideand the top.

7. TO REMOVE THE SWITCH SUPPORT (MP6): Use a small, flat-bladescrewdriver to gently unsnap the sides and top of the switch support from the snapsshown in Figure 3-3.

8. The LCD, switch assembly, slide-switch actuator, and elastomeric contact strips(J3, J4) for the LCD and switch assembly are accessible and can be replaced asneeded. Do not allow the LCD to get wet. Before installing a new LCD, make surethat all connector contact points are clean.

CautionDo not touch the conductive edges of the elastomeric strips orthe contacts on the switch assembly. If they are contaminated,clean them with isopropyl alcohol.

9. Reassembling the meter is the reverse of disassembling it. After the meter isreassembled, execute the PERFORMANCE TESTS to confirm that the meter isworking properly.

* J4 and S2 are not present in Models 7-300 and 7-600.


http://www.elso.sk

MaintenanceDisassembly and Reassembly 3

3-3

Case, Top

Switch Assembly

Actuator, Switch

Main PCA

Shield, Bottom

Foot

LCD

Conn.Elastomeric

Conn.ElastomericLCD to PCA

Support, Switch Assembly

Battery

Shock Absorber

Case, Bottom

Screw, THD Form, PH.P.STL,5-14 x .750

as07f.eps

Figure 3-1. Models 12B and 18 Disassembled Unit


http://www.elso.sk


3-4

Case, Top

Actuator Switch

Main PCA

Shield, Bottom

Foot

LCD

Conn.ElastomericLCD to PCA

Support, Switch Assembly

Shock Absorber

Battery

Case, Bottom

Screw, THD Form, PH.P.STL,5-14 x .750

as10f.eps

Figure 3-2. Models 7-300 and 7-600 Disassembled Unit


http://www.elso.sk

MaintenanceDisassembly and Reassembly 3

3-5

1

2

3

Snap

SnapSnaps

as04f.eps

Figure 3-3. Removing and Reinserting the Printed Circuit Assembly


http://www.elso.sk


3-6

Cleaning

CautionTo avoid damaging the meter, do not use aromatichydrocarbons or chlorinated solvents for cleaning. Thesesolutions will react with the plastics used in the instruments.Do not get the LCD wet.

To clean the case, wipe it with a cloth lightly dampened with water and a mild detergent.

Wash the pca with isopropyl alcohol or hot deionized water and a soft brush. Do not usedetergent of any kind for cleaning the pca. The pca must be completely dry before themeter is reassembled. Dry the pca with clean dry air at low pressure (<20 psi); then bakeit at 50ºC for 2 hours.

Performance Tests

P WarningTo avoid electric shock, do not execute the performance testsprocedures unless the meter is fully assembled.

Use the PERFORMANCE TESTS to confirm that the meter is working properly. If themeter fails any of these tests, it needs calibration (see CALIBRATION) or repair. Theequipment required is specified in Table 3-1.

1. Connect the calibrator to the [+] and COM jacks on the meter.

2. Referring to Table 3-2 for the Fluke 7-300 or 7-600, or Table 3-3 for the Fluke 12Bor 18, put the meter in the function and range shown for Test 1.

3. Apply the input from the appropriate source. The reading on the display should bewithin the MINIMUM and MAXIMUM values shown in Table 3-2 or 3-3.

4. Test the remaining functions and ranges.

Table 3-1. Required Equipment

Equipment Minimum Specifications Recommended Models

DMM Calibrator DC Voltage: 0-600V

Accuracy: ±0.25%

AC Voltage: 0-600V

Accuracy: ±0.5%

Frequency: 50-400 Hz

Fluke Models 5700A, 5500A,5100B, or equivalent

Decade Resistor Resistance: 1.0-40 MΩ

Accuracy: ±0.25%

General Resistance RDS-77Band 41B or Fluke 5500A

Decade Capacitor Capacitance: 0-1.000 µF

Accuracy: ±0.5%

GenRad 1412-BC or Fluke 5500A


http://www.elso.sk

MaintenancePerformance Tests 3

3-7

Table 3-2. Performance Tests for Models 7-300 and 7-600

Test No. ApplicableModel(s)

1MeterRange

Input ToMeter

DisplayMinimum

DisplayMaximum

1

2

3

4

5

6

7

8

7-300/7-600

7-300/7-600

7-300/7-600

7-300/7-600

7-300/7-600

7-300

7-600

7-600

40.00V ac

40.00V ac

40.00V ac

400.0V ac(300.0V ac for7-300)

400.0V ac(300.0V ac for7-300)

300V ac

400.0V ac

600V ac

4.40V, 50 Hz

35V, 50 Hz

35V, 400 Hz

100V, 50 Hz

150V, 400 Hz

300V, 50 Hz

350V, 80 Hz

600V, 400 Hz

4.24

33.95

33.95

96.8

145.4

291

339.5

580

4.56

36.05

36.05

103.2

154.6

309

360.5

620

9

10

11

12

13

14

7-300/7-600

7-300/7-600

7-300/7-600

7-300/7-600

7-300/7-600

7-600

40.00V dc

40.00V dc

400.0V dc

400.0V dc(300.0V dc for7-300)

400.0V dc(300.0V dc for7-300)

600V dc

4.40V dc

-35V dc

+100V dc

-150V dc

300V dc

-600V dc

4.32

-35.54

+98.4

-152.3

295.4

-610

4.48

-34.46

+101.6

-147.7

304.6

-590

152

162

173

7-300/7-600

7-300/7-600

7-300/7-600

400.0Ω

400.0Ω

400.0Ω

0.0Ω

1.0Ω

350.0Ω

0.0

0.8

344.5

0.2

1.2

355.5

1. To avoid overload/current limit condition on the calibrator when testing the Model 7, defeat the 50Ω divider on thecalibrator and allow at least 3 seconds at each voltage interval above 40V.

2. Model 7 beeper should be on.

3. Model 7 beeper may be on or off.


http://www.elso.sk


3-8

Table 3-3. Performance Tests for Models 12B and 18

TestNo.

Meter Range(Automatic Selection 12B Only)

Input ToMeter

SwitchPosition

DisplayMinimum

DisplayMaximum

1

2

3

4

5

6

7

8

92

10

4.000V ac

4.000V ac, MIN MAX

4.000V ac

4.000V ac

4.000V ac

4.000V ac

40.00V ac

40.00V ac

400.0V ac

600V ac

0V

0V

10 mV, 50 Hz

10 mV, 400 Hz

3.5V, 50 Hz

3.5V, 400 Hz

35V, 50 Hz

35V, 400 Hz

350V, 80 Hz

600V, 400 Hz

Center

Center

Center

Right1

Right1

Center

Center

Right1

Right1

Center

0.000

0.000

0.007

0.007

3.430

3.430

34.30

34.30

343.0

586

0.003

0.040

0.013

0.013

3.570

3.570

35.70

35.70

357.0

614

11

12

13

14

15

16

17

18

4.000V dc, MIN MAX

4.000V dc

40.00V dc

400.0V dc

4.000V dc

40.00V dc

400.0V dc

600V dc

0V

0V

+20 mV dc

-200 mV dc

+3.5V

-35V dc

+100V dc

-600V dc

Center

Right1

Right1

Center

Center

Center

Center

Center

-0.012

-0.002

00.01

-000.3

+3.466

-35.33

+99.0

-606

0.012

0.002

00.03

-000.1

+3.534

-34.67

+101.0

-594

19

203

213

22

23

24

25

26

27

28

29

30

315

325

Continuity

Continuity, Automatic Selection

Continuity, Automatic Selection

400.0Ω

400.0Ω

400.0Ω

4.000 kΩ

40.00 kΩ

400.0 kΩ

4.000 MΩ

40.00 MΩ

Ω, Automatic Selection

1.000 µF

1.000 µF

+2V dc3

+3.43V dc3

-0.5V dc3

0.0Ω

1.0Ω

350.0Ω

1.0 kΩ

35 kΩ

100 kΩ

2.9 MΩ

35 MΩ

1.96V dc

0.0 µF

0.95 µF

Right

Right

Right

Right

Right

Right

Right

Right

Right

Right

Right

Right

Right

Right

1.980

3.3974

-0.5074

0.0

0.8

346.6

0.990

34.67

99.0

2.873

34.44

1.9404

-0.001 µF

0.930 µF

2.020

3.4634

-0.4934

0.2

1.2

353.4

1.010

35.33

101.0

2.927

35.56

1.9804

0.001 µF

0.970 µF

1. Center position for Model 18.

2. In the Automatic Selection mode, the UUT uses a low-impedance thermistor (~2.5k for circuit protection and loadtesting (referred to as low-Z input circuitry). When using the 5100B, 5500A, or 5700A to drive the UUT with highvoltages, avoid an overload/current limit condition by gradually stepping the voltage up (waiting two secondsbetween each step) from 90.0V, 120.0V, 180.0V, and 350.0V at 80 Hz each step.

3. Calibrator 50Ω divider override.

4. The dc volts annunciator must be on. Test does not apply to Model 18.

5. Conducting performance tests of the 400Ω, 4 kΩ, 40 kΩ, and 1 µF ranges (tests no. 22, 23, 24, 25, 26, 31, and 32)verifies that the discrete and integrated circuitry needed to support the other capacitance ranges are working withinspecifications. Therefore, the tests indirectly verify that the meter will meet specification in the 10 µF, 100 µF,1000 µF, and 10,000 µF ranges.


http://www.elso.sk

MaintenanceCalibration Adjustments for Models 12B and 18 3

3-9

Calibration Adjustments for Models 12B and 18To ensure that the meter performs to specifications, make calibration adjustmentsannually using the following procedure:

1. Set the calibrator for 0V dc. Put the meter in the 4.000V dc range.

2. Connect the calibrator to the [+] and COM jacks on the Meter.

3. Apply an input of +4.000V dc ±0.25%

The meter display should read between 3.997-4.003V. If it does not, adjust R4 (seeFigure 3-4) as described below.

To adjust R4, proceed as follows:

1. Remove any input signals to the meter.

2. Remove the four screws on the back and separate the case bottom and case top.

Notice that when you do so the battery remains in the case bottom and power to themeter is disconnected.

3. Observing correct polarity, connect a 9V battery to the battery contacts using easyhook jumpers or alligator clip leads (see Figure 3-4).

Note To avoid stretching or bending the battery contacts, connect leads to thebase of the contacts as shown in Figure 3-4.

4. Set the calibrator for 0V dc. Put the meter in the 4.000V dc range.

5. Connect the calibrator to the [+] and COM jacks on the meter.

6. Apply an input of +4.000V dc ±0.25%

7. Adjust R4 (see Figure 3-4) so that the meter display reads between 3.997 and4.003V.


http://www.elso.sk


3-10

+ _9V

BATTERY

+

Clip to Base Contacts

Adjust R4 for 3.997-4.003V DC

Input Receptacles +

as05f.eps

Figure 3-4. Calibration Adjustment

Calibration Adjustments for Models 7-300 and 7-600To ensure that the meter performs to specifications, make calibration adjustmentsannually using the following procedure:

1. Set the calibrator for 0V dc. Switch the meter ON.

2. Connect the calibrator to the [+] and COM jacks on the meter. Defeat the 50Ωdivider on the calibrator (if any).

3. Apply an input of 3.500V dc ±0.25%. Wait at least 3 seconds.

4. Apply an input of 3.75V dc ±0.25%. Within 5 seconds the meter should display areading between 3.747 and 3.753V dc. If it does not, adjust R4 as described below.

To adjust R4, proceed as follows:

1. Remove any input signal to the meter.

2. Remove the four screws on the back and separate the case bottom from the case top.

Notice that when you do so, the battery remains in the case bottom and power to themeter is disconnected.

3. Observing the correct polarity, connect a known good 9V battery to the batterycontacts using easy-hook jumpers or alligator clip leads. Refer to Figure 3-4.

Note To avoid stretching or bending the battery contacts, connect the leads tothe base of the contacts, as shown in Figure 3-4.

4. Set the calibrator for 0V dc. Turn the meter ON.


http://www.elso.sk

MaintenanceCalibration Adjustments for Models 7-300 and 7-600 3

3-11

5. Connect the calibrator to the [+] and COM input jacks on the meter. Defeat the 50Ωdivider on the calibrator (if any).

6. Apply an input of 3.500V dc ±0.25%. Wait at least 3 seconds.

7. Apply an input of 3.75V dc ±0.25%. Wait 5 seconds.

8. Adjust R4 so that the meter displays a reading between 3.747 and 3.753V dc.

9. Remove the inputs to the meter, disconnect the battery, and reassemble the meter.


http://www.elso.sk


3-12


http://www.elso.sk

4-1

Chapter 4Parts and Schematics

IntroductionThis chapter contains an illustrated list of replaceable parts for the 7-300, 7-600, 12B,and 18 Meters. Parts are listed by assembly; alphabetized by reference designator. Eachassembly is accompanied by an illustration showing the location of each part and itsreference designator. The parts lists give the following information:

• Reference designator• An indication if the part is subject to damage by static discharge• Description• Fluke stock number• Total quantity• Any special notes (i.e., factory-selected part)

CautionA * symbol indicates a device that may be damaged by staticdischarge.

How to Obtain PartsElectrical components may be ordered directly from the manufacturer by using themanufacturers part number, or from the Fluke Corporation and its authorizedrepresentatives by using the part number under the heading FLUKE STOCK NO. In theU.S., order directly from the Fluke Parts Dept. by calling 1-800-526-4731. Parts priceinformation is available from the Fluke Corporation or its representatives. Prices are alsoavailable in a Fluke Replacement Parts Catalog which is available on request.

In the event that the part ordered has been replaced by a new or improved part, thereplacement will be accompanied by an explanatory note and installation instructions, ifnecessary.


http://www.elso.sk


4-2

To ensure prompt delivery of the correct part, include the following information whenyou place an order:

• Instrument model and serial number• Part number and revision level of the pca containing the part.• Reference designator• Fluke stock number• Description (as given under the DESCRIPTION heading)• Quantity

Manual Status InformationThe Manual Status Information in Table 4-1 defines the assembly revision levels that aredocumented in the manual. Revision levels are printed on each pca.

Table 4-1. Manual Status Information

Ref. or Option No. Assembly Name Fluke Part No. Revision Level

A1 PCB ASSEMBLY (FLUKE 12) 879002 M

A1 PCB ASSEMBLY (FLUKE 10/18) 878991 M

A1 PCB ASSEMBLY (FLUKE 7-300) 614963 M

A1 PCB ASSEMBLY (FLUKE 7-600) 614966 M

Newer InstrumentsChanges and improvements made to the instrument are identified by incrementing therevision letter marked on the affected pca. These changes are documented on a manualsupplement sheet which, when applicable, is included with the manual.

Parts Lists, Drawings, and SchematicsThis section contains the parts lists, drawings, and schematics for the meters.

Note

This instrument may contain a Nickel-Cadmium battery. Do not mix withthe solid waste stream. Spent batteries should be disposed of by a qualifiedrecycler or hazardous materials handler. Contact your authorized Flukeservice center for recycling information.

P WarningTo avoid fire or explosion, replace the fusible resistor only withFluke PN 867361.


http://www.elso.sk

Parts and SchematicsParts Lists, Drawings, and Schematics 4

4-3

Table 4-2. Models 12B, 18, and 18/AL Final Assembly

ReferenceDesignator Description

Fluke StockNumber

TotalQuantity

A1 MAIN PCA (MODEL 12B) 879002 1

A1 MAIN PCA (MODEL 18) 878991 1

BT1 BATTERY, 9V, 0-15MA 696534 1

H1-4 SCREW, PH, P, AM THD FORM, STL, 5-14, .750 832246 4

J3 CONN, ELASTOMERIC, LCD TO PWB, 2.050 L 867247 1

J4 CONN, ELASTOMERIC, SWITCH TO PWB, .500 L 867242 1

MP2 CASE TOP, (PAD XFER & WINDOW, MODEL 12B) 614948 1

MP2 CASE TOP, (PAD XFER & WINDOW, MODEL 18) 614955 1

MP2 CASE TOP, (PAD XFER & WINDOW, MODEL 18/AL) 615192 1

MP5 ACTUATOR, SWITCH 203445 1

MP6 SUPPORT, SWITCH ASSEMBLY 879031 1

MP8 CASE, BOTTOM, YELLOW (MODEL 12B) 614864 1

MP8 CASE, BOTTOM, GRAY (MODEL 18) 614872 1

MP9 SHIELD, BOTTOM 878277 1

MP10 SHOCK ABSORBER 878983 1

MP11 FOOT, NON-SKID 885884 1

MP12 TEST LEADS 855742 1

S2 SWITCH ASSEMBLY (MODEL 12B) 614799 1

S2 SWITCH ASSEMBLY (MODEL 18) 614807 1

U3 LCD, 3.5 DIGIT, MULTIPLEXED 855226 1

TM1 12B/18 INSTRUCTION SHEET 602000 1


http://www.elso.sk


4-4

FLUKE 12B, FLUKE 18, FLUKE 18/ALT&B

MP2

S2

MP5

A1

MP9

MP11

U3

J4

J3

MP6

BT1

MP10

MP8

H1-4

as06f.eps

Figure 4-1. Models 12B and 18 Final Assembly


http://www.elso.sk


4-5

Table 4-3. Models 7-300 and 7-600 Final Assembly

ReferenceDesignator Description

Fluke StockNumber

TotalQuantity

A1 MAIN PCA (MODEL 7-600) 614966 1

A1 MAIN PCA (MODEL 7-300) 614963 1

BT1 BATTERY, 9V, 0-15MA 696534 1

H1-4 SCREW, PH, P, AM THD FORM, STL, 5-14, .750 832246 4

J3 CONN, ELASTOMERIC, LCD TO PWB, 2.050 L 867247 1

MP2 CASE TOP, (PAD XFER & WINDOW, MODEL 7-600) 614930 1

MP2 CASE TOP, (PAD XFER & WINDOW, MODEL 7-300) 614922 1

MP5 ACTUATOR, SWITCH 203452 1

MP6 SUPPORT, SWITCH ASSEMBLY 879031 1

MP8 CASE, BOTTOM, YELLOW 614864 1

MP9 SHIELD, BOTTOM 878277 1

MP10 SHOCK ABSORBER 878983 1

MP11 FOOT, NON-SKID 885884 1

MP12 TEST LEADS 855742 1

U3 LCD, 3.5 DIGIT, MULTIPLEXED 855226 1

TM1 INSTRUCTION SHEET, FLUKE 7 602018 1


http://www.elso.sk


4-6

FLUKE 7-300, FLUKE 7-600T&B

MP2

MP5

A1

MP9

MP11

U3

J3

MP6

MP10

BT1

MP8

H1-4

as09f.eps

Figure 4-2. Models 7-300 and 7-600 Final Assembly


http://www.elso.sk


4-7

Table 4-4. A1 Main PCA

ReferenceFlukeStock Total Quantity

Designator Description Number 7-300 7-600 12B 18

C1 CAP, TA, 0.47 µF, ±20%, 35V 655035 1 1 1 1

C2, C5-7 CAP, POLYES, 0.022 µF, ±10%, 50V 715268 0 0 4 4

C2, C7 CAP, POLYES, 0.022 µF, ±10%, 50V 715268 2 2 0 0

C3 CAP, TA, 22 µF, ±20%, 6V, 6032 876545 1 1 1 1

C4, C13 CAP, CER, 0.1 µF, ±10%, 25V, X7R, 1206 747287 0 2 2 0

C4, C12, C13 CAP, CER, 0.1 µF, ±10%, 25V, X7R, 1206 747287 3 0 0 0

C4, C11, C13 CAP, CER, 0.1 µF, ±10%, 25V, X7R, 1206 747287 0 0 0 3

C5, C6 CAP, CER, 4700 PF, ±20%, 100V 743427 2 2 0 0

C8 CAP, TA, 3.3 µF, ±20%, 16V, 3528 876552 1 1 1 1

C9 CAP, CER, 0.022 µF, ±10%, 50V, X7R, 1206 747279 1 1 1 1

C10 CAP, AL, 22 µF, ±20%, 10V, SOLV PROOF 887245 1 1 1 1

C14 CAP,POLY,.01 µF, ±10%,.1000V 822361 1 1 1 1

C15 CAP, TA, 47 µF, ±20%, 10V, 7343 867580 1 1 1 1

C16 CAP, CER, 10 PF, ±20%, 50V, C0G 721589 1 1 1 1

CR1 DIODE, SI, 100 PIV, 1 AMP, SURFACE MOUNT 912451 1 1 1 1

CR2 DIODE,SI,DUAL, BV = 50V, IO = 100 mA, SOT-23 851659 1 1 1 1

CR3 DIODE,SI, BV = 70V, IO = 50 mA, DUAL, SOT-23 742320 1 1 1 1

E1 SURGE PROTECTOR,3750v,±20% 867361 1 1 1 1

J1, J2 RECEPTACLE, INPUT 878988 2 2 2 2

LS1 AF TRANSD, PIEZO, 20MM 876995 1 1 1 1

Q1 TRANSISTOR, SI, NPN, SELECT IEBO, SOT-23 821637 1 1 1 1

Q2 TRANSISTOR, SI, PNP, SELECT ICER, SOT-23 887179 1 1 1 1

R1 RES, CERM, 162K, ±1%, .125W, 100 PPM, 1206 876198 1 1 1 1

R2 RES, MF, 332K, ±1%, 0.125W, 100 PPM 655217 1 1 1 1

R3 RES, MF, 23.4K, ±0.1%, 0.125W, 100 PPM 876292 1 1 1 1

R4 RES,VAR,CERM,25K, ±25%,.2W 876300 1 1 1 1

R5 RES, CERM, 43.2K, ±1%, .125W, 100 PPM, 1206 887109 1 1 1 1

R6 RES, CERM, 226K, ±1%, .125W, 100 PPM, 1206 876524 1 1 1 1

R7-9, R23, R28 RES, CERM, 1M, ±1%, .125W, 100 PPM, 1206 836387 5 5 5 5

R10 RES, CERM, 309K, ±1%, .125W, 100 PPM, 1206 876201 1 1 1 1

R11, R12 RES, MF, 30.1K, ±0.1%, 0.125W, 100 PPM 887161 2 2 2 2

R13 RES, MF, 27.1K, ±0.1%, 0.125W, 100 PPM 876289 1 1 1 1

R14, R15 RES, CERM, 10K, ±5%, .125W, 200 PPM, 1206 746610 2 2 2 2

R16, R18 RES,CERM, 470, ±5%,3W 887117 2 2 2 2

R17 RES,CERM, 1M, ±5%,1W 912589 1 1 1 1

R19 RES, MF, 450, ±10%, 107398 1 1 1 1

R21 RES JUMPER, 0.02, 0.25W 682575 1 1 1 1

R22, R29, R30 RES, CERM, 300, ±5%, .125W, 200 PPM, 1206 746362 3 3 3 3

R24 RES, CERM, 487K, ±1%, .125W, 100 PPM, 1206 887112 1 1 1 1

R25 RES, CERM, 2.2M, ±5%, .125W, 200 PPM, 1206 811778 1 1 1 1


http://www.elso.sk


4-8

Table 4-4. A1 Main PCA (cont)

ReferenceFlukeStock Total Quantity

Designator Description Number 7-300 7-600 12B 18

R26 RES, CERM, 100K, ±1%, .125W, 100 PPM, 1206 769802 1 1 1 1

R27 RES, CERM, 0, +.05 MAX, .125W, 1206 810747 1 1 1 1

RT1 THERM, POS 1.1K, ±20%, 25C 867192 1 1 1 1

S1 SWITCH, SLIDE, 3 POS, 5 PIN 868117 1 1 1 1

U1 ARTIC, ASSEMBLY TESTED 858472 1 1 1 1

U2 IC, CMOS, 4 BIT MPU, LCD 601575 1 1 0 0

U2 *IC, CMOS, 4 BIT MPU, LCD CNTRLR, 80PNQFP 866913 0 0 1 1

VR1 IC, 1.23V, 150 PPM T.C., BANDGAP V. REF 634451 1 1 1 1

XBT, XBT2 CONTACT, BATTERY 890327 2 2 2 2

Y1 RESONATOR, CERAMIC, PIEZOELEC, 2.10

MHZ

876024 1 1 1 1

Z1 RES NET THK FILLM TESTED 872234 1 1 1 1


http://www.elso.sk


4-9

FLUKE 12-1601

as11f.eps

Figure 4-3. Models 12B, 18, 7-300, and 7-600 Main PCA Components


http://www.elso.sk


4-10

R2

81

M

R2

6

10

0K

R5

43

.2

K

R6

22

6K

R7

1M

R8

1M

R9

1M

R1

3

27

.1

K

R1

7

1M

R1

8

47

0

R1

6

47

0

LS

1

APV4

APV3

APV2

APV1

DIVLO

APV0

ACV

VSS

OHMS

SWS

ISRC

AMPS

CLAMP

AGND

DGND

READ*

ADR5

ADR4

ADR3

ADR2

ADR1

ADR0

VSS

VDD

K0

K1

K2

AZ

INT

REFI

DG

ND

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

N/

C

BE

EP

ER

*

VS

S

VS

S

CL

K

BC

LK

TE

ST

CL

K

BE

EP

ER

N/

C

WR

IT

E*

PS

TE

ST

VS

ET

AC

BO

AV

AM

AV

AO

P

AV

AO

M

PF

O

VS

S

AFI

FAI

FA

O

AF

O

BG

ND

RE

FH

BI

AS

U1

33

2K

R2

VR

1

R1

1

30

.1

KE

1

J1

3.

3

C8

CR

2B

AV

74

10

.0

M

Z1

1.00K

Z1

10.01K

Z1

101K

Z1

1.111M

Z1

10

.0

M

Z1

.4

7C

12

3.

4K

R3

R1

16

2K

.0

22

C2

10

KR

15

22

C3

J2

10

pF

C1

6

CR

11

N4

00

2

R2

7

0

47C

15

BOTTOM SHIELD

TOP SHIELD

S1

BT

1

9V

R3

03

00

TP

9

Q2

.0

22

C5

.0

22

C7

C1

4

.01

.0

22

C6

C9

.0

22

TP

5

TP

4

TP

6

TP

8

TP

7

CW

R4

25

K

Q1

20

%1.

1KRT

1

t+

R2

2

30

0

R1

41

0K

R1

03

09

KR

24

48

7K

R1

23

0.

1K

47

0

R1

9

0

R2

1

R2

93

00

20

55

55

CO

MM

ON

M5

0V

25

%

1%

1%

1%

1%

1%

1%

1%

MF

0.

1%

44

52

1

60

28

39

76

54

32

22

19

32

34

40

42

43

45

27

25

26

13

56

58

18

16

33

55

50

49

48

47

31

46

41

21

20

14

35

10

11

12

51

59

37

24

30

17

15

36

57

9

29

8

23

38

53

54

1%

MF

1.

23

5V

0.

1%

MF

20

%3

75

0V

20

%1

6V

T

23

48

476 4

45

21

20

%3

5V

T

0.

1%

MF

1%

50

VM

T20

%6

V

VOLT/OHMS

50

V

32

54

1

50

V M

M1K

V

10

%5

0V

1%

1%

MF

0.

1%

VD

D

SW

S

VS

S1

BC

LK

VB

T+

DA

TA

0

DA

TA

1

DA

TA

2

DA

TA

3

VS

S2

VS

S2

DG

ND

DG

ND

VS

S2

VD

D

VD

D

RE

AD

*

AD

R5

AD

R4

AD

R3

AD

R2

AD

R1

AD

R0

CL

K

DG

ND

DG

ND

OH

MS

IS

RC

VS

S1

RE

FH

AF

O FA

O

RE

FI

AV

AO

M

AG

ND

BG

ND

AP

V0

FAI

VB

T+

AC

V

AG

ND

VD

D

WR

IT

E*

DG

ND

DG

ND

10

V2

0%

T

1W

50

VM

3W

3W

5%

MG

MG5

%3

W MG5

%

FLU

KE

12-

1201

(1 o

f 2)

as20f.eps

Figure 4-4. Model 12B Schematic


http://www.elso.sk


4-11

TP

2T

P1

TP

32

.1

MH

Z

Y1

U2

P70P63P62P61P60X2X1VPPXT2XT1VDDP33P32P31P30P23P22P21P20P13P12P11P10P03

SO

SC

KP

00

P5

3P

52

P5

1P

50

VS

SP

43

P4

2P

41

P4

0V

LC

2V

LC

1V

LC

0B

IA

S

S12S13S14S15S16S17S18S19S20S21S22S23S24S25S26S27S28S29S30S31

COM0COM1COM2COM3

P7

1P

72

P7

3R

ES

ET

*S

0S

1S

2S

3S

4S

5S

6S

7S

8S

9S

10

S1

1

12

34

56

78

91

01

11

21

31

41

51

61

71

81

92

02

12

22

32

42

52

62

72

8

U3

CR

3B

AV

99

R2

3

1.

0M

2.

2M

R2

5

C1

3

0.1

22

C1

0

C4

0.1

S2

S2

S2

S2

MIN

/MA

X

CA

PA

CIT

AN

CE

RA

NG

E

SE

LE

CT

AZ

EN

D

SC

LK

SO

UT

1%

DG

ND

AD

R0

AD

R1

AD

R2

AD

R3

AD

R4

AD

R5

RE

AD

*W

RI

TE

*

VS

S1

BC

LK

CL

K

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

VD

D

VS

S2

25

V

10

%

25

V1

0%

.5

%

67

68

25

38

29

30

31

32

34

35

36

37

65

66

69

70

79

80

71

72

73

74

75

76

77

78

39

40

26

27

28

33

47

41

43

2

5655

595857

54

20191817161514131211109876543

1 6463626160

535251504948

464544

4224232221

12

72

28

34

56

78

91

01

11

21

31

41

51

61

71

81

92

02

12

22

32

42

52

6

AL

10

V2

0%

51

52

53

54

FLU

KE

12-

1201

(2 o

f 2)

AL

UM

IN

UM

AL

CA

RB

ON

F

IL

MC

FC

AR

BO

N

CO

MP

CC

CO

MP

ON

EN

T

TY

PE

A

BB

RE

VIA

TIO

N

CO

DE

S

SY

MC

AP

AC

ITO

RS

YM

RESI

STOR

PO

LY

PR

OP

YL

EN

E

FI

LM

M C T PC

PP

MY

LA

R/

PO

LY

ES

TE

RC

ER

AM

IC

TA

NT

AL

UM

PO

LY

C

AR

BO

NA

TE

MG

WW

MF

ME

TA

L

GL

AZ

EW

IRE

W

OU

ND

META

L FI

LM

5

NOTE

S:UN

LESS

OTH

ERW

ISE

SPEC

IFIE

D:

1. 2.A

LL

C

AP

AC

ITA

NC

E

VA

LU

ES

A

RE

IN

M

ICR

OF

AR

AD

S,

+/

-

10

%,

C

ER

AM

IC.

3.AL

L RE

SIST

ANCE

VAL

UES

ARE

IN O

HMS,

1/8

WAT

T,+

/-

5%

,

CE

RM

ET

.

+/

-1

%

RE

SIS

TO

RS

A

RE

1

/8

WA

TT

,C

ER

ME

T.

4.

R19

IS A

FUS

IBLE

RES

ISTO

R. E

XACT

RE

PL

AC

EM

EN

T

ON

LY

.

6.R

11

A

ND

R

12

M

AY

H

AV

E

+/

-0

.2

5%

TO

LE

RA

NC

E.

7.R

23

M

AY

H

AV

E

+/

-5

%

TO

LE

RA

NC

E.

8.C

4,

9

,

11

&

1

3

MA

Y

HA

VE

+

/-

20

%

TOL

ER

AN

CE

.

SE

LE

CT

PIN

A

SS

IGN

ME

NT

SM

EM

BR

AN

E

TA

IL

S2

1 2 6543

VS

S

VS

S

RA

NG

E

as21f.eps

Figure 4-4. Model 12B Schematic (cont)


http://www.elso.sk


4-12

R2

81

M

R2

6

10

0K

R5

43

.2

K

R6

22

6K

R7

1M

R8

1M

R9

1M

R1

3

27

.1

K

R1

7

1M

R1

8

47

0

R1

6

47

0

LS

1

APV4

APV3

APV2

APV1

DIVLO

APV0

ACV

VSS

OHMS

SWS

ISRC

AMPS

CLAMP

AGND

DGND

READ*

ADR5

ADR4

ADR3

ADR2

ADR1

ADR0

VSS

VDD

K0

K1

K2

AZ

INT

REFI

DG

ND

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

N/

C

BE

EP

ER

*

VS

S

VS

S

CL

K

BC

LK

TE

ST

CL

K

BE

EP

ER

N/

C

WR

IT

E*

PS

TE

ST

VS

ET

AC

BO

AV

AM

AV

AO

P

AV

AO

M

PF

O

VS

S

AFI

FAI

FA

O

AF

O

BG

ND

RE

FH

BI

AS

U

1

33

2K

R2

VR

1

R1

1

30

.1

KE

1

J1

3.

3

C8

CR

2B

AV

74

10

.0

M

Z1

1.00K

Z1

10.01K

Z1

101K

Z1

1.111M

Z1

10

.0

M

Z1

.4

7C

12

3.

4K

R3

R1

16

2K

.0

22

C2

10

KR

15

22

C3

J2

10

pF

C1

6

CR

11

N4

00

2

R2

7

0

47C

15

BOTTOM SHIELD

TOP SHIELD

S1

BT

1

9V

R3

03

00

TP

9

Q2

.0

22

C5

.0

22

C7

C1

4

.01

.0

22

C6

C9

.0

22

TP

5

TP

4

TP

6

TP

8

TP

7

CW

R4

25

K

Q1

20

%1

.1

K

RT

1

t +

R2

2

30

0

R1

41

0K

R1

03

09

KR

24

48

7K

R1

23

0.

1K

50

0

R1

9

R2

1

R2

93

00

20

5

CO

MM

ON

25

%

M5

0V

T

1W

M

T2

0%

10

V

DG

ND

DG

ND

WR

IT

E*

VD

D

AG

ND

AC

V

VB

T+

FAI

AP

V0

BG

ND

AG

ND

AV

AO

M

RE

FI

FA

O

AF

O

RE

FH

VS

S1

IS

RC

OH

MS

DG

ND

DG

ND

CL

K

AD

R0

AD

R1

AD

R2

AD

R3

AD

R4

AD

R5

RE

AD

*

VD

D

VD

D

VS

S2

DG

ND

DG

ND

VS

S2

VS

S2

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

VB

T+

BC

LK

VS

S1

SW

S

VD

D

0.

1%

MF

1%

1%

50

V1

0%

1K

V

M5

0V

1

45

23

50

V

VOLT/OHMS

6V

20

%T

M50

V

1%

MF

0.

1%

T

35

V2

0%

12

5 446

7 4

8 4

32

16

V2

0%

37

50

V2

0%

MF

0.

1%

1.

23

5V

MF

1%

54

53

38

23

8

29

9

57

36

15

17

30

24

37

59

51

12

11

10

35

14

20

21

41

46

31

47

48

49

50

55

33

16

18

58

56

13

26

25

27

45

43

42

40

34

32

19

22

23

45

67 3

9

28

60

1

52

44

0.

1%

MF

1%

1%

1%

1%

1%

1%

1%

50

V M

0

MG

5%

3W

1W

MF

+0

%-

20

%M

G5

%3

W

FLU

KE

10-

1201

(1 o

f 2)

as16f.eps

Figure 4-5. Model 18 Schematic


http://www.elso.sk


4-13

TP

2T

P1

TP

32

.1

MH

Z

Y1

U2


SO

SC

KP

00

P5

3P

52

P5

1P

50

VS

SP

43

P4

2P

41

P4

0V

LC

2V

LC

1V

LC

0B

IA

S


COM0COM1COM2COM3

P7

1P

72

P7

3R

ES

ET

*S

0S

1S

2S

3S

4S

5S

6S

7S

8S

9S

10

S1

1

12

34

56

78

91

01

11

21

31

41

51

61

71

81

92

02

12

22

32

42

52

62

72

8

U3

CR

3B

AV

99

R2

3

1.

0M

0.1

C1

1

2.

2M

R2

5

C1

3

0.1

22

C1

0

C4

0.1

S2

S2

SE

LE

CT

RA

NG

E

AZ

EN

D

SC

LK

SO

UT

20

%1

0V

AL

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

98

76

54

32

82

27

1

21222324

42

444546

484950515253

60616263641

34567891011121314151617181920

54

575859

5556

2

43

41

47

33

28

27

26

40

39

78

77

76

75

74

73

72

71

80

79

70

69

66

65

37

36

35

34

32

31

30

29

38

25

68

67

.5

%

10

%

25

V

VD

D

DA

TA

0

DA

TA

1

DA

TA

2

DA

TA

3

CL

K

BC

LK

VS

S1

WR

IT

E*

RE

AD

*A

DR

5A

DR

4

AD

R3

AD

R2

AD

R1

AD

R0

DG

ND

25

V2

0%

25

V1

0%

1%

25

VS

S21

5

FLU

KE

10-

1201

(2 o

f 2)

AL

UM

IN

UM

AL

CA

RB

ON

F

IL

MC

FC

AR

BO

N

CO

MP

CC

CO

MP

ON

EN

T

TY

PE

A

BB

RE

VIA

TIO

N

CO

DE

S

SY

MC

AP

AC

ITO

RS

YM

RESI

STOR

PO

LY

PR

OP

YL

EN

E

FI

LM

M C T PC

PP

MY

LA

R/

PO

LY

ES

TE

RC

ER

AM

IC

TA

NT

AL

UM

PO

LY

C

AR

BO

NA

TE

MG

WW

MF

ME

TA

L

GL

AZ

EW

IRE

W

OU

ND

META

L FI

LM

SE

LE

CT

PIN

ASSI

GNME

NTS

ME

MB

RA

NE

TA

ILS

2

CL

OS

ED

OP

EN

OP

EN

CL

OS

ED

OP

EN

OP

EN

CL

OS

ED

CL

OS

ED

OP

EN

LO

W

Z

HIG

H

Z

OF

F

4-

52

-3

1-

2

CO

NT

AC

TS

POSI

TIO

NS1 C

ONN

ECTI

VITY

TAB

LE

5

RA

NG

E

VS

SV

SS

62 3 4 51

NOTE

S:UN

LESS

OTH

ERW

ISE

SPEC

IFIE

D:

1. 2.A

LL

C

AP

AC

ITA

NC

E

VA

LU

ES

A

RE

IN

M

ICR

OF

AR

AD

S,

+/

-

10

%,

C

ER

AM

IC.

3.AL

L RE

SIST

ANCE

VAL

UES

ARE

IN O

HMS,

1/8

WAT

T,+

/-

5%

,

CE

RM

ET

.

+/

-1

%

RE

SIS

TO

RS

A

RE

1

/8

WA

TT

,C

ER

ME

T.

4.

R19

IS A

FUS

IBLE

RES

ISTO

R. E

XACT

RE

PL

AC

EM

EN

T

ON

LY

.

6.R

11

A

ND

R

12

M

AY

H

AV

E

+/

-0

.2

5%

TO

LE

RA

NC

E.

7.R

23

M

AY

H

AV

E

+/

-5

%

TO

LE

RA

NC

E.

8.C

4,

9

,

11

&

1

3

MA

Y

HA

VE

+

/-

20

%

TOL

ER

AN

CE

.

as17f.eps

Figure 4-5. Model 18 Schematic (cont)


http://www.elso.sk


4-14

R2

81

M

R2

6

10

0K

R5

43

.2

K

R6

22

6K

R7

1M

R8

1M

R9

1M

R1

3

27

.1

K

R1

7

1M

R1

8

47

0

R1

6

47

0

LS

1

APV4

APV3

APV2

APV1

DIVLO

APV0

ACV

VSS

OHMS

SWS

ISRC

AMPS

CLAMP

AGND

DGND

READ*

ADR5

ADR4

ADR3

ADR2

ADR1

ADR0

VSS

VDD

K0

K1

K2

AZ

INT

REFI

DG

ND

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

N/

C

BE

EP

ER

*

VS

S

VS

S

CL

K

BC

LK

TE

ST

CL

K

BE

EP

ER

N/

C

WR

IT

E*

PS

TE

ST

VS

ET

AC

BO

AV

AM

AV

AO

P

AV

AO

M

PF

O

VS

S

AFI

FAI

FA

O

AF

O

BG

ND

RE

FH

BI

AS

U

1

33

2K

R2

VR

1

R1

1

30

.1

KE

1

J1

3.

3

C8

CR

2B

AV

74

10

.0

M

Z1

1.00K

Z1

10.01K

Z1

101K

Z1

1.111M

Z1

10

.0

M

Z1

.4

7C

12

3.

4K

R3

R1

16

2K

.0

22

C2

10

KR

15

22

C3

J2

10

pF

C1

6

CR

11

N4

00

2

R2

7

0

47C

15

BOTTOM SHIELD

TOP SHIELD

S1

BT

1

9V

R3

03

00

TP

9

Q2

.0

22

C7

C1

4

.01

C9

.0

22

TP

5

TP

4

TP

6

TP

8

TP

7

CW

R4

25

K Q1

20

%1.

1KRT

1

t+

R2

2

30

0

R1

41

0K

R1

03

09

KR

24

48

7K

R1

23

0.

1K

50

0

R1

9

0

R2

1

R2

93

00

5

20

CO

MM

ON

MG

5%

3W

T2

0%

10

V

1%

1%

1%

1%

1%

1%

1%

MF

0.

1%

44

52

1

60

28

39

76

54

32

22

19

32

34

40

42

43

45

27

25

26

13

56

58

18

16

33

55

50

49

48

47

31

46

41

21

20

14

35

10

11

12

51

59

37

24

30

17

15

36

57

9

29

8

23

38

53

54

1%

MF

1.

23

5V

0.

1%

MF

20

%3

75

0V

16

V

23

48

476 4

45

21

20

%3

5V

T

0.

1%

MF

1%

50

VM

T20

%6

V

VOLT/OHMS

50

V

32

54

1

M1K

V

10

%5

0V

1%

1%

MF

0.

1%

VD

D

SW

S

VS

S1

BC

LK

VB

T+

DA

TA

0

DA

TA

1

DA

TA

2

DA

TA

3

VS

S2

VS

S2

DG

ND

DG

ND

VS

S2

VD

D

VD

D

RE

AD

*

AD

R5

AD

R4

AD

R3

AD

R2

AD

R1

AD

R0

CL

K

DG

ND

DG

ND

OH

MS

IS

RC

VS

S1

RE

FH

AF

O FA

O

RE

FI

AV

AO

M

AG

ND

BG

ND

AP

V0

FAI

VB

T+

AC

V

AG

ND

VD

D

WR

IT

E*

DG

ND

DG

ND

25

%

MG

5%

3W

1W

MF

+0

%-

20

% 1W

20

%T

50

VM

FLU

KE

7-3

00-1

201

(1 o

f 2)

47

00

PF

C6 0

2%

01

0V

47

00

PF

C5

02

%0

10

V

as12f.eps

Figure 4-6. Model 7-300 Schematic


http://www.elso.sk


4-15

TP

2T

P1

TP

32

.1

MH

Z

Y1

U2


SO

SC

KP

00

P5

3P

52

P5

1P

50

VS

SP

43

P4

2P

41

P4

0V

LC

2V

LC

1V

LC

0B

IA

S


COM0COM1COM2COM3

P7

1P

72

P7

3R

ES

ET

*S

0S

1S

2S

3S

4S

5S

6S

7S

8S

9S

10

S1

1

12

34

56

78

91

01

11

21

31

41

51

61

71

81

92

02

12

22

32

42

52

62

72

8

U3

CR

3B

AV

99

R2

3

1.

0M

2.

2M

R2

5

C1

3

0.1

0.1

C1

2

22

C1

0

C4

0.1

S2

S2

S2

SE

LE

CT

AZ

EN

D

SC

LK

SO

UT

CA

PA

CI

TA

NC

E

RA

NG

E

DG

ND

AD

R0

AD

R1

AD

R2

AD

R3

AD

R4

AD

R5

RE

AD

*W

RI

TE

*

VS

S1

BC

LK

CL

K

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

VD

D

VS

S2

25

V

10

%

25

V1

0%

.5

%

67

68

25

38

29

30

31

32

34

35

36

37

65

66

69

70

79

80

71

72

73

74

75

76

77

78

39

40

26

27

28

33

47

41

43

2

5655

595857

54

20191817161514131211109876543

1 6463626160

535251504948

464544

4224232221

12

72

28

34

56

78

91

01

11

21

31

41

51

61

71

81

92

02

12

22

32

42

52

6

AL

10

V2

0%

51

25

V1

0%

1%

53

52

FLU

KE

7-3

00-1

201

(2 o

f 2)

AL

UM

IN

UM

AL

CA

RB

ON

F

IL

MC

FC

AR

BO

N

CO

MP

CC

CO

MP

ON

EN

T

TY

PE

A

BB

RE

VI

AT

IO

N

CO

DE

S

SY

MC

AP

AC

IT

OR

SY

MR

ES

IS

TO

R

PO

LY

PR

OP

YL

EN

E

FI

LM

M C T PC

PP

MY

LA

R/

PO

LY

ES

TE

RC

ER

AM

IC

TA

NT

AL

UM

PO

LY

C

AR

BO

NA

TE

MG

WW

MF

ME

TA

L

GL

AZ

EW

IR

E

WO

UN

DM

ET

AL

F

IL

M

J CR

ELS

C

RE

FE

RE

NC

E

DE

SIG

NA

TIO

N

LA

ST

US

ED

NO

T

US

ED

QCR UBT

S TP

Y ZVR

RT

SE

LE

CT

PI

N

AS

SIG

NM

EN

TS

ME

MB

RA

NE

T

AI

L

S2

CL

OS

ED

OP

EN

OP

EN

CL

OS

ED

OP

EN

OP

EN

CL

OS

ED

CL

OS

ED

OP

EN

LO

W

Z

HI

GH

Z

OF

F

4-

52

-3

1-

2

CO

NT

AC

TS

PO

SI

TI

ONS

1

CO

NN

EC

TIV

ITY

TA

BL

E

5

20

11

11 11 3 22 2 3 1116 1

NO

TE

S:

UN

LE

SS

O

TH

ER

WI

SE

S

PE

CI

FI

ED

:

1. 2.A

LL

C

AP

AC

IT

AN

CE

V

AL

UE

S

AR

E

IN

M

IC

RO

FA

RA

DS

,+

/-

1

0%

,

CE

RA

MI

C.

3.A

LL

R

ES

IS

TA

NC

E

VA

LU

ES

A

RE

I

N

OH

MS

,

1/

8

WA

TT

,+

/-

5%

,

CE

RM

ET

.

+/

-1

%

RE

SI

ST

OR

S

AR

E

1/

8

WA

TT

,C

ER

ME

T.

4.

R1

9

IS

A

F

US

IB

LE

R

ES

IS

TO

R.

E

XA

CT

RE

PL

AC

EM

EN

T

ON

LY

.

6.R

11

A

ND

R

12

M

AY

H

AV

E

+/

-0

.2

5%

T

OL

ER

AN

CE

.

7.R

23

M

AY

H

AV

E

+/

-5

%

TO

LE

RA

NC

E.

8.

30 8

1 2 6543

VS

S

VS

S

CA

PA

CI

TA

NC

E

RA

NG

E

C4

,

9,

1

2

&

13

M

AY

H

AV

E

+/

-2

0%

T

OL

ER

AN

CE

.

as13f.eps

Figure 4-6. Model 7-300 Schematic (cont)


http://www.elso.sk


4-16

R2

81

M

R2

6

10

0K

R5

43

.2

K

R6

22

6K

R7

1M

R8

1M

R9

1M

R1

3

27

.1

K

R1

7

1M

R1

8

47

0

R1

6

47

0

LS

1

APV4

APV3

APV2

APV1

DIVLO

APV0

ACV

VSS

OHMS

SWS

ISRC

AMPS

CLAMP

AGND

DGND

READ*

ADR5

ADR4

ADR3

ADR2

ADR1

ADR0

VSS

VDD

K0

K1

K2

AZ

INT

REFI

DG

ND

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

N/

C

BE

EP

ER

*

VS

S

VS

S

CL

K

BC

LK

TE

ST

CL

K

BE

EP

ER

N/

C

WR

IT

E*

PS

TE

ST

VS

ET

AC

BO

AV

AM

AV

AO

P

AV

AO

M

PF

O

VS

S

AFI

FAI

FA

O

AF

O

BG

ND

RE

FH

BI

AS

U

1

33

2K

R2

VR

1

R1

1

30

.1

KE

1

J1

3.

3

C8

CR

2B

AV

74

10

.0

M

Z1

1.00K

Z1

10.01K

Z1

101K

Z1

1.111M

Z1

10

.0

M

Z1

.4

7C

12

3.

4K

R3

R1

16

2K

.0

22

C2

10

KR

15

22

C3

J2

10

pF

C1

6

CR

11

N4

00

2

R2

7

0

47C

15

BOTTOM SHIELD

TOP SHIELD

S1

BT

1

9V

R3

03

00

TP

9

Q2

47

00

PF

C6

.0

22

C7

C1

4

.01

C9

.0

22

TP

5

TP

4

TP

6

TP

8

TP

7

CW

R4

25

K

Q1

20

%1

.1

K

RT

1

t +

R2

2

30

0

R1

41

0K

R1

03

09

KR

24

48

7K

R1

23

0.

1K

50

0

R1

9

0

R2

1

R2

93

00

5

CO

MM

ON

02

%0

10

V4

70

0P

FC

5

02

%0

10

V

M5

0V

MG

5%

3W

1W

T2

0%

10

V

DG

ND

DG

ND

WR

IT

E*

VD

D

AG

ND

AC

V

VB

T+

FAI

AP

V0

BG

ND

AG

ND

AV

AO

M

RE

FI

FA

O

AF

O

RE

FH

VS

S1

IS

RC

OH

MS

DG

ND

DG

ND

CL

K

AD

R0

AD

R1

AD

R2

AD

R3

AD

R4

AD

R5

RE

AD

*

VD

D

VD

D

VS

S2

DG

ND

DG

ND

VS

S2

VS

S2

DA

TA

3

DA

TA

2

DA

TA

1

DA

TA

0

VB

T+

BC

LK

VS

S1

SW

S

VD

D

0.

1%

MF

1%

1%

50

V1

0%

1K

VM

1

45

23

50

V

VOLT/OHMS

6V

20

%T

M50

V

1%

MF

0.

1%

T

35

V2

0%

12

5 446

7 4

8 4

32

T1

6V

20

%

37

50

V2

0%

MF

0.

1%

1.

23

5V

MF

1%

54

53

38

23

8

29

9

57

36

15

17

30

24

37

59

51

12

11

10

35

14

20

21

41

46

31

47

48

49

50

55

33

16

18

58

56

13

26

25

27

45

43

42

40

34

32

19

22

23

45

67 3

9

28

60

1

52

44

0.

1%

MF

1%

1%

1%

1%

1%

1%

1%

25

%

1W

MF

+0

%-

20

%M

G5

%3

W

FLU

KE

7-6

00-1

201

(1 o

f 2)

as18f.eps

Figure 4-7. Model 7-600 Schematic


http://www.elso.sk


4-17

TP

2T

P1

TP

32

.1

MH

Z

Y1

U2


SO

SC

KP

00

P5

3P

52

P5

1P

50

VS

SP

43

P4

2P

41

P4

0V

LC

2V

LC

1V

LC

0B

IA

S


COM0COM1COM2COM3

P7

1P

72

P7

3R

ES

ET

*S

0S

1S

2S

3S

4S

5S

6S

7S

8S

9S

10

S1

1

12

34

56

78

91

01

11

21

31

41

51

61

71

81

92

02

12

22

32

42

52

62

72

8

U3

CR

3B

AV

99

R2

3

1.

0M

2.

2M

R2

5

C1

3

0.1

22

C1

0

C4

0.1

S2

S2

S2

S2

SO

UT

SC

LK

AZ

EN

D

SE

LE

CT

RA

NG

E

CA

PA

CI

TA

NC

EMI

N/

MA

X4

5

35

25

15

20

%1

0V

AL

26

25

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

98

76

54

32

82

27

1

AL

UM

INU

MA

LC

AR

BO

N

FIL

MC

FC

AR

BO

N

CO

MP

CC

CO

MPO

NE

NT

T

YP

E

AB

BR

EV

IAT

ION

C

OD

ES

SY

MC

AP

AC

ITO

RS

YM

RE

SI

ST

OR

PO

LY

PR

OP

YL

EN

E

FIL

M

M C T PC

PP

MY

LA

R/

PO

LY

ES

TE

RC

ER

AM

ICT

AN

TA

LU

MP

OL

Y

CA

RB

ON

AT

E

MG

WW

MF

ME

TA

L

GL

AZ

EW

IR

E

WO

UN

DM

ET

AL

F

ILM

J CR

ELS

C

RE

FE

RE

NC

E

DE

SIG

NA

TIO

N

LA

ST

US

ED

NO

T

US

ED

QCR UBT

S TP

Y ZVR

RT

SE

LE

CT

PI

N

AS

SIG

NM

EN

TS

ME

MB

RA

NE

T

AIL

S2

CLO

SE

D

OP

EN

OP

EN

CLO

SE

D

OP

EN

OP

EN

CLO

SE

D

CLO

SE

D

OP

EN

LOW

Z

HIG

H

Z

OF

F

4-

52

-3

1-

2

CO

NTA

CT

SP

OS

ITIO

N

S1

CO

NN

EC

TIV

ITY

TA

BL

E

5

20

11,

12

11 11 3 22 2 3 1116 1

NO

TE

S:

UN

LE

SS

O

TH

ER

WI

SE

S

PE

CI

FI

ED

:

1. 2.A

LL

C

AP

AC

IT

AN

CE

V

AL

UE

S

AR

E

IN

M

IC

RO

FA

RA

DS

,+

/-

1

0%

,

CE

RA

MI

C.

3.A

LL

R

ES

IS

TA

NC

E

VA

LU

ES

A

RE

I

N

OH

MS

,

1/

8

WA

TT

,+

/-

5%

,

CE

RM

ET

.

+/

-1

%

RE

SI

ST

OR

S

AR

E

1/

8

WA

TT

,C

ER

ME

T.

4.

R1

9

IS

A

F

US

IB

LE

R

ES

IS

TO

R.

E

XA

CT

RE

PL

AC

EM

EN

T

ON

LY

.

6.R

11

A

ND

R

12

M

AY

H

AV

E

+/

-0

.2

5%

T

OL

ER

AN

CE

.

7.R

23

M

AY

H

AV

E

+/

-5

%

TO

LE

RA

NC

E.

8.

30 8

1 2 6543

VS

S

VS

S

C MIN

/MA

X

AP

AC

IT

AN

CE

RA

NG

E

C4

,

9,

1

2

&

13

M

AY

H

AV

E

+/

-2

0%

T

OL

ER

AN

CE

.

21222324

42

444546

484950515253

60616263641

34567891011121314151617181920

54

575859

5556

2

43

41

47

33

28

27

26

40

39

78

77

76

75

74

73

72

71

80

79

70

69

66

65

37

36

35

34

32

31

30

29

38

25

68

67

.5

%

10

%2

5V

10

%

25

V

VS

S2

VD

D

DA

TA

0

DA

TA

1

DA

TA

2

DA

TA

3

CL

K

BC

LK

VS

S1

WR

IT

E*

RE

AD

*A

DR

5A

DR

4

AD

R3

AD

R2

AD

R1

AD

R0

DG

ND

1%

FLU

KE

7-6

00-1

201

(2 o

f 2)

as19f.eps

Figure 4-7. Model 7-600 Schematic (cont)


http://www.elso.sk


4-18


http://www.elso.sk

Service Centers

PN 850941 2/96


http://www.elso.sk

Service Centers (cont)

2/96


http://www.elso.sk

Manual Supplement

© 1999 Fluke Corporation. All rights reserved. Printed in the U.S.A.

Manual Title: 12B,18,7 Series Service Supplement Issue: 3Part Number: 602730 Issue Date: 12/99Print Date: August 1996 Page Count: 1Revision/Date:

This supplement contains information necessary to ensure the accuracy ofthe above manual. Enter the corrections in the manual if either one of thefollowing conditions exist:

1. The revision letter stamped on the indicated PCA is equal to or higherthan that given with each change.

2. No revision letter is indicated at the beginning of the change.


http://www.elso.sk

12B,18,7 Series Service Manual Supplement

12/99 1

Change #1On page 3-7, Table 3-2, Test No. 11,

Change: 400.0V dcTo: 400.0V dc4

Add footnote 4 to the bottom of the table:

4. Model 7-300 meter range is 300 Vdc.

On page 3-8, Table 3-3, Test No. 4, 12, and 13, change Switch Position,

From: RightTo: Center

On pages 4-3 and 4-5, Tables 4-2 and 4-3:

Delete both A1 entries in their entirety.On all MP2 entries, remove the word WINDOW from the Description.

On page 4-8, Table 4-4, change the part number for the first U2,

From: 601575To: 601757

Change #2On page 3-6, replace Table 3-1 with the following:

Equipment Minimum Specifications Recommended Model

DMM Calibrator DC Voltage: 0-600VAccuracy: ± 0.25%

AC Voltage: 0-600VAccuracy: ± 0.5%


Resistance: 1.0Ω– 40 MΩAccuracy: ± 0.25%

Capacitance: 0-1.000 µF

Accuracy: ± 0.5%

Fluke 5520A

ALTERNATE

Equipment Minimum Specifications Recommended Models

DMM Calibrator DC Voltage: 0-600VAccuracy: ± 0.25%

AC Voltage: 0-600VAccuracy: ± 0.5%


Fluke 5700A

Decade Resistor Resistance: 1.0 – 40 MΩAccuracy: ± 0.25%

General Resistance RDS-77Band 41B

Decade Capacitor Capacitance: 0-1.000 µFAccuracy: ± 0.5%

GenRad 1412-BC


http://www.elso.sk

Fluke 12B Service Manual - elso.sk

Documents

Transcript of Fluke 12B Service Manual - elso.sk