EL Series Service Manual (Including EL302Tv)

EL Series (including EL302Tv)

Power Supplies Service Manual

Manual Part Number 48511-0380 Issue 2

Applicability

This Service Manual covers models EL301, EL302, EL183, EL561, EL302D, EL302T and EL302Tv from their introduction to the present.

Models EL303 and EL155 are covered by a separate manual 48511-0920.

Table of Contents

Specification 2

Safety 4

EMC 5

Installation 6

General 7

Circuit Descriptions 9

Calibration 11

Parts List 13

Component Layouts & Circuit Diagrams 35

1

Specification MAIN OUTPUTS

Voltage Range: 0V to 18V minimum (EL183) 0V to 30V minimum (EL301, EL302, EL302D, EL302T, EL302Tv) 0 to 56V minimum (EL561)

Current Range: 0A to 1A minimum (EL301) 0A to 1.1A minimum (EL561) 0A to 2A minimum (EL302, EL302D, EL302T, EL302Tv) 0A to 3.3A minimum (EL183)

Voltage Setting: By coarse and fine controls.

Current Setting: By single logarithmic control.

Operating Mode: Constant voltage or constant current with automatic cross-over.

Output Switch: Electronic. Preset voltage and current displayed when off.

Output Terminals: Universal 4mm safety binding posts on 19mm (0.75”) pitch.

Output Impedance: Typically <5mΩ in constant voltage mode. Typically >50kΩ in constant current mode.

Output Protection: Outputs will withstand forward voltages of up to 20V above the rated output voltage. Reverse protection by diode clamp for currents up to 3A.

Load Regulation: <0.01% of maximum output for 90% load change.

Line Regulation: <0.01% of maximum output for 10% line change.

Ripple & Noise: (20MHz bandwidth)

Typically <1mVrms (CV mode).

Transient Load Response: <20µs to within 50mV of set level for 90% load change.

Temperature Coefficient: Typically <100ppm/°C.

Status Indication: Output on lamp. Constant current mode lamp.

METER SPECIFICATIONS (Main Outputs)

Meter Types: Dual 3 digit meters with 14mm (0.56") LEDs. Reading rate 4 Hz.

Meter Resolutions: 100mV, 10mA.

Meter Accuracies: Voltage 0.3% of reading ± 1 digit. Current 0.6% of reading ± 1 digit.

AUXILIARY LOGIC OUTPUT (EL302T only) Voltage: 5V or 3·3V, selectable by front panel switch.

Voltage Accuracy: ± 3%

Current Limit: 1A minimum.

Output Protection: Output will withstand up to 16V forward voltage. Diode clamp reverse protection for currents up to 3A.

Ripple & Noise: (20MHz bandwidth)

Typically <1mV rms.

Load & Line Regulation: <0·5% for a 90% load change; <0·1% for a 10% line change.

Status Indication: Current limit lamp.

2

AUXILIARY LOGIC OUTPUT (EL302Tv only)

Voltage: Variable <1.5V to >5V by front panel control.

Meter Voltage Accuracy: 0.3% ± 1 digit.

Current Limit: 2A minimum.

Output Protection: Output will withstand up to 7V forward voltage. Diode clamp reverse protection for currents up to 3A.

Ripple & Noise (20MHz bandwidth):

Typically <5mVrms, <15mVpk-pk (CV mode).

Load Regulation: <3% for 90% load change.

Line Regulation: <0.2% for 10% line voltage change.

Status Indication: UNREG lamp.

GENERAL

AC Input: 230V AC or 115VAC ± 10%, 50/60Hz. Installation Category II.

Power Consumption: EL301: 85VA max; EL302/EL183/EL561: 160VA max; EL302D/EL302T/EL302Tv: 320VA max.

Operating Range: +5ºC to +40ºC, 20% to 80% RH.

Storage Range: −40ºC to + 70ºC.

Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.

Safety: Complies with EN61010-1.

EMC: Complies with EN61326.

Size: Singles: 140 x 160 x 295 mm (WxHxD). Dual & Triple: 260 x 160 x 295 mm (WxHxD).

Weight: EL301: 3.1kg; EL302/EL183/EL561: 4.1kg; EL302D/EL302T/EL302Tv: 7.4kg.

3

Safety This power supply is a Safety Class I instrument according to IEC classification and has been designed to meet the requirements of EN61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use). It is an Installation Category II instrument intended for operation from a normal single phase supply.

This instrument has been tested in accordance with EN61010-1 and has been supplied in a safe condition. This instruction manual contains some information and warnings which have to be followed by the user to ensure safe operation and to retain the instrument in a safe condition.

This instrument has been designed for indoor use in a Pollution Degree 1 environment (no pollution, or only dry non-conductive pollution) in the temperature range 5°C to 40°C, 20% - 80% RH (non-condensing). It may occasionally be subjected to temperatures between +5° and -10°C without degradation of its safety.

Use of this instrument in a manner not specified by these instructions may impair the safety protection provided. Do not operate the instrument outside its rated supply voltages or environmental range. In particular excessive moisture may impair safety.

WARNING! THIS INSTRUMENT MUST BE EARTHED Any interruption of the mains earth conductor inside or outside the instrument will make the instrument dangerous. Intentional interruption is prohibited. The protective action must not be negated by the use of an extension cord without a protective conductor.

When the instrument is connected to its supply, terminals may be live and opening the covers or removal of parts (except those to which access can be gained by hand) is likely to expose live parts. The apparatus shall be disconnected from all voltage sources before it is opened for any adjustment, replacement, maintenance or repair. Capacitors inside the power supply may still be charged even if the power supply has been disconnected from all voltage sources but will be safely discharged about 1 minute after switching off power.

Any adjustment, maintenance and repair of the opened instrument under voltage shall be avoided as far as possible and, if inevitable, shall be carried out only by a skilled person who is aware of the hazard involved.

If the instrument is clearly defective, has been subject to mechanical damage, excessive moisture or chemical corrosion the safety protection may be impaired and the apparatus should be withdrawn from use and returned for checking and repair.

Make sure that only fuses with the required rated current and of the specified type are used for replacement. The use of makeshift fuses and the short-circuiting of fuse holders is prohibited.

Do not wet the instrument when cleaning it. The following symbols are used on the instrument:-

Earth (ground) terminal.

mains supply OFF.

l mains supply ON.

alternating current (ac)

direct current (dc)

4

EMC This instrument has been designed to meet the requirements of the EMC Directive 89/336/EEC.

Compliance was demonstrated by meeting the test limits of the following standards:

Emissions EN61326 (1998) EMC product standard for Electrical Equipment for Measurement, Control and Laboratory Use. Test limits used were:

a) Radiated: Class B

b) Conducted: Class B

c) Harmonics: EN61000-3-2 (2000) Class A; the instrument is Class A by product category.

Immunity EN61326 (1998) EMC product standard for Electrical Equipment for Measurement, Control and Laboratory Use.

Test methods, limits and performance achieved were:

a) EN61000-4-2 (1995) Electrostatic Discharge : 4kV air, 4kV contact, Performance A.

b) EN61000-4-3 (1997) Electromagnetic Field, 3V/m, 80% AM at 1kHz, Performance B.

c) EN61000-4-11 (1994) Voltage Interrupt, 1 cycle, 100%, Performance B.

d) EN61000-4-4 (1995) Fast Transient, 1kV peak (AC line), 0.5kV peak (DC Outputs), Performance B.

e) EN61000-4-5 (1995) Surge, 0.5kV (line to line), 1kV (line to ground), Performance B.

f) EN61000-4-6 (1996) Conducted RF, 3V, 80% AM at 1kHz (AC line only; DC Output connections <3m not tested), Performance A.

According to EN61326 the definitions of performance criteria are:

Performance criterion A: ‘During test normal performance within the specification limits.’

Performance criterion B: ‘During test, temporary degradation, or loss of function or performance which is self-recovering’.

Performance criterion C: ‘During test, temporary degradation, or loss of function or performance which requires operator intervention or system reset occurs.’

Where Performance B is stated it is because DC Output regulation may deviate beyond Specification limits under the test conditions. However, the possible deviations are still small and unlikely to be a problem in practice.

Note that if operation in a high RF field is unavoidable it is good practice to connect the PSU to the target system using screened leads which have been passed (together) through an absorbing ferrite sleeve fitted close to the PSU terminals.

Cautions To ensure continued compliance with the EMC directive observe the following precautions:

a) after opening the case for any reason ensure that all signal and ground connections are remade correctly and that case screws are correctly refitted and tightened.

b) In the event of part replacement becoming necessary, only use components of an identical type, see the Service Manual.

5

Installation Mains Operating Voltage

Check that the instrument operating voltage marked on the rear panel is suitable for the local supply. Should it be necessary to change the operating voltage, proceed as follows: 1. Ensure that the instrument is disconnected from the AC supply. 2. Remove the screws holding the case upper and handle and lift off the case upper. 3. Change the transformer connections following the diagram below:

230V Operation 115V Operation

BLUE BROWN BLUE BROWN

4. Re-assemble in the reverse order. 5. To comply with safety standard requirements the operating voltage marked on the rear panel

must be changed to clearly show the new voltage setting. Fuse

The AC fuse is located in the fuse drawer in the lower part of the IEC inlet connector. To change the fuse remove the line cord and open the fuse drawer with a suitable tool. The correct fuse type is 20 x 5mm 250V HBC time-lag with the following rating:

Model 230V 115V 30V/1A 800mA (T) 1.6A (T) 30V/2A; 18V/3.3A; 56V/1.1A 1.25A (T) 2.5A (T) Dual and Triple 2A (T) 4A (T)

Make sure that only fuses with the required current rating and of the specified type are used for replacement. The use of makeshift fuses and the short-circuiting of fuseholders are prohibited.

Mains Lead When a three core mains lead with bare ends is provided this should be con ed as follows:

BROWN - MAINS LIVE BLUE - MAINS NEUTRAL

GREEN/YELLOW - EARTH Safety

As the colours of the wires in the mains lead of this apparatus may not correcoloured markings identifying the terminals in your plug proceed as follows:The wire which is coloured green-and-yellow must be connected to the termis marked by the letter E or by the safety earth symbol shown above or coloand-yellow. The wire which is coloured blue must be connected to the terminal which is N or coloured black. The wire which is coloured brown must be connected to the terminal which letter L or coloured red.

WARNING! THIS INSTRUMENT MUST BE EARTHEDAny interruption of the mains earth conductor inside or outside the instrumeinstrument dangerous. Intentional interruption is prohibited.

6

nect

Earth Symbol

spond with the inal in the plug which ured green or green-

marked with the letter

is marked with the

. nt will make the

General Service Handling Precautions

Service work or calibration should only be carried out by skilled engineers using high quality test equipment. If the user is in any doubt as to his competence to carry out the work, the instrument should be returned to the manufacturer or their agent overseas for the work to be carried out.

The tracks on the printed circuit boards are very fine and may lift if subjected to excessive heat. Use only a miniature temperature-controlled soldering iron and remove all solder with solder wick or suction before attempting to remove a component.

Dismantling the instrument WARNING!

When the instrument is connected to its supply, terminals may be live and opening the covers or removal of parts (except those to which access can be gained by hand) is likely to expose live parts. The instrument shall be disconnected from all voltage sources before it is opened for any adjustment, replacement, maintenance or repair. Capacitors inside the power supply may still be charged even if the power supply has been disconnected from all voltage sources but will be safely discharged about 1 minute after switching off power.

Any adjustment, maintenance and repair of the opened instrument under voltage shall be avoided as far as possible and, if inevitable, shall be carried out only by a skilled person who is aware of the hazard involved.

1. Remove the 6 side screws and two handle screws to release the top cover.

2. Remove the screws at the front edge of the chassis that secure the front panel assembly to the chassis (2 on the singles, 4 on the dual/triple); the front panel assembly can now be laid flat to give better access to its own pcb and the driver pcb in the chassis.

3. To remove the driver pcb first unplug the transformer, power transistor and control connectors from the pcb, noting their orientation (pin 1 on the socket to corner marker on the pcb header). Unclip the pcb from the nylon mounting pillars and lift free.

4. The auxiliary output driver pcb on the triple can similarly be removed from the heatsink bracket.

5. To remove the control pcb from the front panel first pull off the control knobs. Remove the screws that secure the pcb to the backs of the terminal, the front panel bracket and front moulding and lift the pcb clear. Note that prior to the introduction of the PSU 'safety' terminals mid 2006, the fastenings for the terminals were 4BA.

6. To access the power transistors on the large heatsink(s) remove the 2 screws retaining each heatsink.

7. Reassemble in reverse order taking great care to ensure that all connections are remade exactly as before dismantling and that no insulation creepage and clearance distances have been compromised.

7

Model Changes (as at September 2006) C21 and C22 (C121 and C122) on the Driver pcb are now both 470uF to prevent the output from occasionally turning on briefly when the mains power switch is turned off.

The Control pcbs for both the singles and dual/triple units have undergone revisions since introduction; both pcbs have been changed to use surface mount components wherever possible and the dual/triple Control has had further minor changes for the EL302Tv model. The particular version can be identified by the part number printed on the Control pcb; each version has its own Component Layout and Parts List but the circuit descriptions are common because the component references are unchanged between versions.

The versions are as follows:

Singles

Version 1: All through-hole components, built on pcb part number 35555-2890.

Version 2: Surface-mount version, from mid-2004, built on pcb part number 35555-4240.

Dual/Triple

Version 1: All through-hole components, built on pcb part number 35555-2870.

Version 2: Surface-mount version, from mid-2004, built on pcb part number 35555-4370.

Version 3: Minor further changes necessary for EL302Tv, from August 2006, built on pcb part number 35555-4710.

The EL302Tv uses a different auxiliary output driver assembly, built on pcb part number 35555-4720, with a variable 1·5V to 5V output controlled by VR11 on the Version 3 Control board.

In mid-2006, revised 'safety' terminals were introduced, as standard, to all models. These terminals will accept 4mm safety leads with a fixed shroud. The fastener changes associated with these revised terminals are shown separately at the end of the Parts Lists and apply to all models.

8

Circuit Descriptions The driver board contains the main power supply and its driver components plus the auxiliary supplies for the control board. The control board contains the control, measurement and displays. The auxiliary output is on a separate pcb. Component references apply to all the single output supplies and Channel A on dual and triple models (the left-hand channel when viewed from the front). Channel B components are all numbered from 100 upwards, e.g. RP3, C9 and R24 on Channel A are RP103, C109 and R124 on Channel B. The linear regulator is in series with the positive output but, because of the way in which the control and metering works, it is convenient to consider the regulator output (OP) as 0V and to regard the negative output as the controlled output voltage (-V). Supply rail and signal names on the schematics are followed by A or B for Channels A and B respectively, e.g. OP/A, IOHIA or AuxA/+5V.

Driver Pcb The main winding is tapped (not EL301) to reduce overhead and therefore dissipation in the series regulator. The relay selects the appropriate tap which is determined by the voltage on the output terminals; see relay check in the Calibration section. A full wave bridge rectifier feeds reservoir capacitor C31.The total secondary winding voltage at full load and the reservoir capacitor voltage off load/full load are listed below for the different models at nominal mains (230V):

EL301/302 EL183 EL561 Secondary (Vrms) 35 23 62

Reservoir off-load (VDC) 47 31 84

Reservoir full-load (VDC) 38 25 71

A 21Vrms centre tapped winding and full wave rectification provide the auxiliary supplies for the different models at nominal mains. IC8 generates +5V for the micro-controller and display. Q7 and D10 generate +7.5V and D11 –5V. Comparator IC9A compares the voltage on the output terminals to a reference derived from the –5V rail. When the output voltage falls below the relay change voltage Q5 is turned off and Q6 on, the relay selects the low tap on the transformer secondary. R64 is model dependent, see Parts Lists and Schematics. When the output on/off switch is off, SW1 is high turning the relay drive off, selecting the high tap on the transformer. Q1, Q4 and the transistor(s) on the large heatsink form a triple darlington series regulator controlled by the error amplifiers on the control board.

3.3V/5V Auxiliary Pcb (EL302T only) The bridge rectifier feeds reservoir capacitor C203. The full load secondary voltage is 7·9Vrms giving 9·4VDC (off load) and 8·0VDC (with a 1A output load) at the reservoir capacitor.

IC203 is a low drop adjustable negative voltage regulator. The regulator generates an internal 1.22V reference between pins 1 and 4. When the output is set to 5V, the end of R203 is open; when set to 3.3V R203 is connected across R202 by the front panel switch SW3.

IC202 is a 2.5V reference and IC201A a comparator. When the output is set to 5V the end of R208 is open; if the output falls below 4.6V IC201A’s output goes low turning on the Current Limit LED. When the output is set to 3.3V R208 is connected across R207 by the front panel switch SW3; when the output drops below 3.1V the Current Limit LED is again lit.

9

1.5V to 5V Auxiliary Pcb (EL302Tv only) The bridge rectifier feeds reservoir capacitor C4. The full load secondary voltage is 8.2Vrms with the output set to 5V and a 2A load.

IC1 is a 300kHz step down (buck) regulator. The feedback voltage is compared against an internal 0.92V reference. The output voltage is set by the front panel control VR11, which is in the feedback path.

IC3 is a 2.5V reference and this is divided down to give 0.86V. If the feedback voltage goes below this level due to excess output current, comparator IC2B lights the Unreg led.

The RH voltmeter measures the output voltage via an isolation circuit. Opto-isolator IC4 has one led and two matched photo diodes inside. One photo diode is placed in the feedback path of IC2A to linearise the output from the photo diodes. R64 on the RH side output converts this current back to a voltage and the ADC reads this when the Show Aux Output switch SW2A is closed. The preset current limit value is achieved by measuring the voltage on the top end of the RH output Current control and is selected by SW2B.

Control Board Voltage Control

IC7C buffers the voltage control potentiometers VR1 and VR2; VR5 sets the maximum output voltage. D6 provides the reference (VREF) which is nominally 2·45V.

IC7A is a differential amplifier. VR9 trims differential gain to ensure good voltage regulation, see Calibration section.

The output of IC7C drives the input of IC7A when the ON-OFF switch, SW1B, is in the ON position. When SW1B is in the OFF position the input of IC7A is grounded via R50, setting the output volts to zero.

The output of IC7A provides the base drive (BASE) to the regulating transistors Q4 and Q1 on the driver pcb via D3.

Current Control IC7D is the error amplifier which compares the voltage on the wiper of VR3, the current limit control, with the voltage generated across the current sense resistor R21. When the output current reaches the set limit IC7D takes control via D4, changing the supply from constant voltage to constant current mode. At the same time Q1 is turned on by IC7D, making ILIMIT go high; this is read by the microcontroller IC3 which turns on the constant current lamp, LED2.

VR4 sets the maximum output current; VR8 adjusts the output current to be the same as the preset current at low levels, see Calibration section.

Measurement and Display The measurement and display is controlled by a microcontroller, IC3. IC5, IC2 and associated components, together with IC3, form a dual slope A-to-D converter. Multiplexer IC4, under the control of IC3, selects the signals to be measured. The status line SW1 from the output ON/OFF switch is read by IC3 to determine which signals are measured, as follows:

Status Voltage Measurement Current Measurement Output Off Preset Volts (VPRT & ILO) Preset Current (IPHI & ILO)

Output On Output Volts (+SENSE & VOLO) Output Current (IOHI & ILO)

IC3 processes the measurement and drives the two multiplexed 3-digit, 7-segment, LED displays via digit driver IC1 and segment latch IC6. Individual segment current limit is provided by RP1 and RP2. The constant current lamp, LED2, is part of this multiplexing scheme; the output on lamp, LED1, is driven directly from the +5V auxiliary rail via R2 when the dc output switch SW1-A is closed.

10

Calibration Refer to the General section for dismantling instructions and safety precautions. Component adjustment references are given as Channel A/ Channel B, e.g. VR5/VR105; Channel A is the left-hand output. For single output supplies use Channel A references. All adjustments are on the front panel control board.

Limits given are for 30V units; values in [ ] brackets are for 18V and 56V models respectively.

Allow 5 minute warm-up before commencing calibration.

Control pcb calibration points (viewed from rear)

Equipment Required A 5½ digit multimeter with better than 0·05% accuracy on dc volts and better than 0·1% accuracy on dc current (to 5A); alternatively use a precision shunt for current measurement.

Rheostat or other high power load arrangement to provide up to 2A load at 30V [3A/18V,1A/56V].

Voltage Calibration Connect the DMM (set to volts 0) across the output. Set voltage and current controls to minimum. Switch output ON (Check LED is on) and check for a reading of 00·0V ± 0·1V on the Volts display and DMM; check the Amps display reads 0·00 ± 0·01A.

Set voltage and current controls to maximum. Adjust VR5/VR105 (maximum output volts) for a reading of 30·8 [18·3, 56·4] on the DMM. Adjust VR6/VR106 (measured output volts) until the Volts display matches the reading on the external DMM.

Switch output OFF. Adjust VR10/110 (preset volts) until the Volts display shows 30·8 [18·3, 56·4].

Current Calibration Switch output OFF. Set output voltage to nominally 2V. Set current control to minimum. Connect the DMM (set to Amps) and load in series across the output. Switch output ON.

Adjust VR8/108 (offset compensation of current control error amp) for a reading of 0·003A ± ·001A on the DMM. Check that the CC LED is ON.

Increase voltage controls and current control to maximum. Adjust load until the DMM reads 2·00A [3·00, 1·00] ± 0·02A. Adjust VR7/107 (measured output current) until the Amps display matches the DMM reading.

Reduce load until the CC LED is ON. Adjust VR4/104 (maximum output current) until the Amps display shows 2·05 [3·34, 1·13].

11

Voltage Regulation Connect the DMM (set to Volts) across the output, no load, output ON.

Adjust voltage controls for a reading of 18.xxxx on the DMM; note exact reading.

Connect load, set current control to maximum and adjust load for 2A [3A, 1A] output current. Adjust VR9/109 (differential voltage gain) until the external DMM matches the previous reading exactly.

3·3V/5V Output Check (EL302T only) Connect the DMM to the output. With switch set to 3·3V position check for a reading of 3·20 to 3·40 Volts.

Switch to the 5V position and check output is between 4·85V and 5·15V.

1.5V to 5V Pcb (EL302Tv only) Set the output voltage to maximum and connect a DMM to its output. Set the RH output switch to off. Press the Show Aux Output switch and adjust VR1 on the 5V pcb so the RH voltmeter matches the DMM reading.

Relay Changeover Voltage Check (not EL301) With no load connected set the output voltage to approximately 12V. Increase the voltage gradually and check that the relay changeover occurs (audible click) at between 14·0V and 14·5V [10·3/10·9V, 25·9/26·7V].

After the relay has changed over reduce the voltage gradually and check that the relay changes back at between 13·3V and 13·9V [9·7/10·3V, 24·6/25·4V].

12

Parts List PCB ASSEMBLY – CONTROL (Version 1) EL301/302/561/183 (COMMON PARTS) Part No. Description Position 20661-0800 SPACER TRAN MTG TO18 FOR D6

20661-0851 SPACER .56 INCH 7-SEG LED DIS1, 2

22225-0220 SWITCH PUSH/PUSH SW1

22573-0210 HEADER 10 WAY STRAIGHT .156P PJ1

23202-0100 RES 10R0F W25 MF 50PPM R50

23202-0220 RES 22R0F W25 MF 50PPM R25

23202-1100 RES 100RF W25 MF 50PPM R40

23202-1220 RES 220RF W25 MF 50PPM R10

23202-1470 RES 470RF W25 MF 50PPM R45

23202-1330 RES 330RF W25 MF 50PPM R22

23202-1680 RES 680RF W25 MF 50PPM R2

23202-2100 RES 1K00F W25 MF 50PPM 11,12, 23, 46, 48

23202-2180 RES 1K80F W25 MF 50PPM R41

23202-2470 RES 4K7OF W25 MF 50PPM R38,39

23202-2499 RES 4K99F W25 MF 50PPM R34

23202-2820 RES 8K20F W25 MF 50PPM R18

23202-3100 RES 10K0F W25 MF 50PPM R4, 5,14,15,17, 24, 28, 30, 32, 43, 44, 51

23202-3143 RES 14K3F W25 MF 50PPM R35

23202-3240 RES 24K0F W25 MF 50PPM R27

23202-3330 RES 33K0F W25 MF 50PPM R6,7,8

23202-3560 RES 56K0F W25 MF 50PPM R31

23202-4180 RES 180KF W25 MF 50PPM R1

23202-4220 RES 220KF W25 MF 50PPM R42

23202-4470 RES 470KF W25 MF 50PPM R29

23202-5100 RES 1M00F W25 MF 50PPM R19

23202-6100 RES 10M0F W25 MF 50PPM R13, 26

23301-0415 RES NETWK SIL 1K0 X 4S RP3

23301-0464 RES NETWK SIL 56R X 4S RP1,2

23320-0003 RES R10 - FERRYALLOY R21

23347-0330 POT 10K LIN SPLINE SHAFT 25MM VR1,2

23347-0340 POT 10K LOG SPLINE SHAFT 25MM VR3

23377-2220 RES PS/H 2K2 CF 10MM VR6, 9,10

23377-2470 RES PS/H 4K7 CF 10MM VR5

23377-4100 RES PS/H 100K CF 10MM VR8

23379-1100 RES PS/H 100R CERMET 10MM VR7

13

PCB ASSEMBLY – CONTROL (Version 1) EL301/302/561/183 (COMMON PARTS)/continued… Part No. Description Position 23424-0443 CAP 10NZ 1KV CER D10 P5 C30

23427-0323 CAP 22PG 100V CER NPO P5 C4, 5

23427-0329 CAP 47PG 63V CER N150 P5 C15,17, 29, 42

23427-0353 CAP 220PG 100V CER N750 P5T C19

23427-9211 CAP 470PK 100V CER MED K P2.5 C32, 33

23557-0511 CAP 47U 10V ELEC RC2 P2 C7

23557-0612 CAP 1U0 100V ELEC RE2 P2 C18,23,37

23557-0647 CAP 10U 35V ELEC RE2 P2 C25,26

23557-0665 CAP 2U2 50V ELEC RE2 P2 C16

23557-0668 CAP 220U 10V ELEC RE2 P2.5 C21

23620-0246 CAP 100NK 63V P/E P5 C3, 6, 8, 9,12, 27, 28, 31

23620-0247 CAP 220NK 63V P/E P5 C1

23620-0249 CAP 330NK 63V P/E P5 C10,11

23620-9007 CAP 10NK 100V P/E P5 C13,14

23685-0007 CAP 100NK 160V P/P MKP4 P10 C2

25021-0901 DIO 1N4148 B/R D1, 2, 3, 4, 5, 7, 8

25061-0200 LED – T1 ROUND (3MM) – RED LED1, 2

25061-0519 DISPLAY 3 DIG .56 LED 9MM LEG DIS1, 2

25117-0020 DIO 1N5401 D10

25336-5590 TRAN PNP BC559C Q1

25377-5490 TRAN NPN BC549C Q2

27106-0506 IC LM324N IC7

27106-0646 IC LF347 BI-FET OP AMP IC5

27161-0120 IC V/REF ZRA245(ZR404) 2.45V D6

27164-0507 IC ULN-2003A IC1

27226-0520 IC 4052B IC4

27226-0530 IC 4053B IC2

27231-5740 IC 74HC574 IC6

27250-2000 IC MCU8 PIC16C55XTP IC3

28502-0010 RESONATOR CER 4MHZ XTAL1

35555-2890 PCB – CONTROL

14

PCB ASSEMBLY – CONTROL (Version 2) EL301/302/561/183 (COMMON SM STAGE) Part Number Description Position 23105-0000 RES SM0805 ZERO OHM R9, R16, R20 23105-0100 RES SM0805 10R0F W1 R50 23105-0220 RES SM0805 22R0F W1 R25 23105-0560 RES SM0805 56R0F W1 R53-60 23105-1100 RES SM0805 100RF W1 R40 23105-1220 RES SM0805 220RF W1 R10 23105-1470 RES SM0805 470RF W1 R45 23105-1680 RES SM0805 680RF W1 R2 23105-2100 RES SM0805 1K00F W1 R11-12, R23, R48, R70-73 23105-2160 RES SM0805 1K60F W1 R35A 23105-2390 RES SM0805 3K90F W1 R34 23105-2470 RES SM0805 4K70F W1 R38-39 23105-2820 RES SM0805 8K20F W1 R18 23105-3100 RES SM0805 10K0F W1 R24,R41 23105-3110 RES SM0805 11K0F W1 R51 23105-3130 RES SM0805 13K0F W1 R35 23105-3270 RES SM0805 27K0F W1 R27 23105-3330 RES SM0805 33K0F W1 R6-8 23105-3560 RES SM0805 56K0F W1 R31 23105-4470 RES SM0805 470KF W1 R29,42 23105-5100 RES SM0805 1M00F W1 R19 23105-6100 RES SM0805 10M0F W1 R13,R26 23106-3100 RES SM0805 10K0D W1 25PPM R4-5, R14-15, R17, R30, R32, R43 23106-3110 RES SM0805 11K0D W1 25PPM R28 23405-0221 CAP SM0805 220P CER COG C19, C24 23405-0470 CAP SM0805 47P CER COG C15, C17, C29, C42 23461-0020 CAP SM0805 100NZ 50V CER Y5V C27-28 25021-0010 DIO SM LL4148 SWITCHING D1-5,D7-8 25340-1000 TRAN SM PNP BC859C Q1 25377-1000 TRAN SM NPN BC849C Q2 27106-1160 IC SM LM324M OP AMP IC7 27106-1460 IC SM LF347M BIFET OP AMP IC5 27161-2030 IC SM V/REF ZRC250 2.5V 2% D6 27227-0520 IC SM 4052 IC4 27227-0530 IC SM 4053 IC2 27239-5740 NC SM 74HC574 IC6 27250-2150 IC SM PIC16C55A-04/SO IC3 28502-1000 RESONATOR SM CSTCR4M00G53-R0 XTL1 35555-4240 PCB - CONTROL

15

PCB ASSEMBLY – CONTROL (Version 2) EL301/302/561/183 (COMMON PARTS)

Part Number Description Location 20661-0851 SPACER .56 INCH 7-SEG LED FOR DISP1-2

22225-0220 SWITCH PUSH/PUSH SPPH11470B SW1


23202-1330 RES 330RF W60 MF 50PPM R22

23202-2360 RES 3K60F W60 MF 50PPM R46

23202-3100 RES 10K0F W60 MF 50PPM R44

23202-4180 RES 180KF W60 MF 50PPM R1

23320-0003 RES R10 - FERRYALLOY R21

23347-0330 POT 10K LIN SPLINE SHAFT 25MM VR1-2

23347-0340 POT 10K LOG SPLINE SHAFT 25MM VR3

23377-2100 RES PS/H 1K0 CF 10MM VR9

23377-2220 RES PS/H 2K2 CF 10MM VR4,6,10

23377-2470 RES PS/H 4K7 CF 10MM VR5

23377-4100 RES PS/H 100K CF 10MM VR8

23379-1100 RES PS/H 100R CERMET 10MM VR7

23424-0443 CAP 10NZ 1KV CER D10 P5 C30

23427-9211 CAP 470PK 100V CER MED K P2.5 C32-33

23557-0500 CAP 1U0 50V ELEC RC2 P1.5 C18

23557-0500 CAP 1U0 50V ELEC RC2 P1.5 C23

23557-0512 CAP 220U 10V ELEC 7MM P2.5 C21

23557-0513 CAP 10U 35V ELEC 7MM P2 C7

23557-0612 CAP 1U0 100V/50V ELEC RE2 P2 C16

23557-0647 CAP 10U 35V ELEC RE2 P2 C25-26

23620-0246 CAP 100NK 63V P/E P5 C3,C6,C8-9,C12,C31

23620-0247 CAP 220NK 63V P/E P5 C1

23620-0249 CAP 330NK 63V P/E P5 C10-11

23620-9007 CAP 10NK 100V P/E P5 C13-14

23685-0007 CAP 100NK 250V P/P MKP4 P10 C2

25061-0200 LED - T1 ROUND (3mm) - RED LED1-2

25061-0519 DISPLAY 3 DIG .56 LED 9MM LEG DISP1-2

25117-0020 DIO 1N5401 D10

27164-0507 IC ULN-2003A IC1

16

PCB ASSEMBLY – CONTROL (Versions 1 & 2) EL301/302/561/183 (UNIQUE PARTS) EL301 EL302 EL561 EL183

C20 100U50V 100U50V 22U100V 100U50V C22 - - 22U100V - R3 75K0F 75K0F 75K0F 137KF

R33 15K0F 15K0F 3K60F 15K0F R36,37 200KF 200KF 200KF 120KF

R47 20K0F 10K5F 20K0F 6K20F VR4 2K2 1K0∗ 2K2 1K0∗

∗ On Version 2 Control, VR4 is 2K2 on all models.

Part Numbers of Unique Parts Part Number Description 23202-2360 RES 3K60F W25 MF 50PPM

23202-2620 RES 6K20F W25 MF 50PPM

23202-3105 RES 10K5F W25 MF 50PPM

23202-3150 RES 15K0F W25 MF 50PPM

23202-3200 RES 20K0F W25 MF 50PPM

23202-3750 RES 75K0F W25 MF 50PPM

23202-4120 RES 120KF W25 MF 50PPM

23202-4137 RES 137KF W25 MF 50PPM

23202-4200 RES 200KF W25 MF 50PPM

23377-2100 RES PS/H 1K0 CF 10MM

23377-2220 RES PS/H 2K2 CF 10MM

23557-0825 CAP 100U 50V LOW ESR

23557-0826 CAP 22U 100V LOW ESR

PCB ASSEMBLY – DRIVER – EL301/302/561/183 (COMMON PARTS) Part Number Description Position 20030-0263 WASHER M3 ZPST FOR IC8/Q1 20038-9501 WASHER M3 SPRING FOR IC8/Q1 20210-0101 NUT M3 ZPST FOR IC8/Q1 20234-0011 SCREW M3 X 10 PNHDPZ ZPST FOR IC8/Q1 20611-0003 BUSH POLYESTER TO220 FOR IC8/Q1 20613-0006 SIL-PAD TO220 FOR IC8/Q1 20670-0180 HEATSINK PCB MTG 63MM HIGH FOR IC8/Q1 22240-0120 RELAY 12V SPDT RL1 22315-0454 FUSE 2.0AT SUBMIN PCB MTG FS1, 2 22573-0204 HEADER 4 WAY STRAIGHT .156P PJ7 22573-0206 HEADER 6 WAY STRAIGHT .156P PJ6 22573-0210 HEADER 10 WAY STRAIGHT .156P PJ5 23185-0000 RES ZERO OHM LK1-6

17

PCB ASSEMBLY – DRIVER – EL301/302/561/183 (COMMON PARTS)/continued… Part Number Description Position 23202-0470 RES 47R0F W25 MF 50PPM R19, 50, 56 23202-1100 RES 100RF W25 MF 50PPM R2,3 23202-1270 RES 270RF W25 MF 50PPM R59 23202-2100 RES 1K00F W25 MF 50PPM R58 23202-2220 RES 2K20F W25 MF 50PPM R4, 5, 65, 66 23202-3470 RES 47K0F W25 MF 50PPM R62, 63, 68 23202-3820 RES 82K0F W25 MF 50PPM R60 23202-5330 RES 3M30F W25 MF 50PPM R61 23557-0615 CAP 470U 16V C22 23557-0647 CAP 10U 35V ELEC RE2 P2 C23, 24 23557-0655 CAP 470U 35V C21 23557-0658 CAP 100U 25V ELEC RE2 P2.5 C37 23685-0008 CAP 100NK 160V P/P P15 C30 25021-0901 DIO 1N4148 D9,12 25115-0907 DIO 1N4002 D1-4, 8 25130-0231 DIO ZEN 8V2 W4 D10 25130-0903 DIO ZEN 5V1 W4 D11 25383-0505 TRAN NPN BC338 Q5-7 27106-0513 IC LM358N IC9 27160-0009 IC V/REG 7805 IC8 35515-1600 PCB - DRIVER

PCB ASSEMBLY - DRIVER - EL301/302/561/183 (UNIQUE PARTS)

EL301 EL302 EL561 EL183 C31 - 1000U63V 470U100V 2200U50V

C32,34 1000U63V 1000U63V 470U100V 2200U50V C33 - 1000U63V 470U100V -

C35,36 - 2U2100V 2U2100V 2U2100V D17,19,21,23 1N5401 1N5401 1N5401 BR1

LK7 0R - - - Q1 TIP31A TIP31A TIP31C TIP31A Q4 BC546 BC546 ZTX453 BC546 R20 0R 1R 1R 0R47

R21,22 - 1R - 0R47 R23 - 1R 1R 0R47 R64 - 300K 590K 210K R67 2K2 2K2 4K7 2K2

18

PART NUMBERS OF UNIQUE PARTS

Part Number Description 23185-0000 RES ZERO OHM

23202-4210 RES 210KF W25 MF 50PPM

23202-4300 RES 300KF W25 MF 50PPM

23202-4590 RES 590KF W25 MF 50PPM

23206-0010 RES 1R00F W6 MF 100PPM

23206-2220 RES 2K20F W6 MF 50PPM

23206-2470 RES 4K70F W6 MF 50PPM

23213-0005 RES 0R47J W25 MF 200PPM

23557-0654 CAP 1000U 63V

23557-0682 CAP 470U 100V

23557-0683 CAP 2200U 50V

23620-0257 CAP 2U2K 100V P/E

25117-0020 DIO 1N5401

25117-0030 DIO 1N5404

25383-0507 TRAN NPN BC546

25386-0030 TRAN NPN TIP31C

25386-9300 TRAN TIP31A

25388-0240 TRAN NPN ZTX453

HEATSINK ASSEMBLY – EL301/302/561/183

Part Number Description Position 20030-0240 WASHER 4BA ZPST

20038-9503 WASHER M3.5 SPRING

20100-9201 NUT 4BA FULL – STEEL

20134-9007 SCREW 4BA x ½” POZI PAN

20611-0007 TRANSISTOR MOUNT - T03

20613-0014 SIL-PAD T03

20670-9001 HEATSINK KP314

22451-0200 SOLDER TAG 4BA

25386-9201 TRAN 2N3055 EL301/302/154

25389-0020 TRAN 2N3442 EL561

19

CASE PARTS - EL301/302/561/183 ∗ Parts marked with ∗ change with the introduction of the revised 'safety' terminals, see last Parts List.

Part Number Description Position 20030-0240∗ WASHER 4BA ZPST CONTROL TO SPACER

20030-0263 WASHER M3 ZPST CONTROL PCB TO GROUND STANDOFFS, BRACKET TO MOULDING

20030-0264 WASHER M2.5 ZPST CONTROL PCB TO MOULDING

20030-0266 WASHER M4 ZPST SAFETY EARTH

20037-0247∗ WASHER 4BA SHK/PROOF I/T ZPST EARTH TERMINAL, FRONT PANEL TO CHASSIS

20037-0301 WASHER M3 SHK/PROOF I/T ZPST CONTROL TO GROUND

20037-0305∗ WASHER 5/16 in. SHK/PROOF I/T ZPST EARTH TERMINAL

20037-0401 SOLDER TAG SHAKEPROOF - 4BA SAFETY EARTH

20038-9502 WASHER M4 SPRING SAFETY EARTH

20038-9503 WASHER M3.5 SPRING TERMINALS 20062-9304 SCREW No.6 x 5/8 in. POZI. PAN HEATSINK MOUNTING 20062-9501 SCREW No.6 x 3/4 in. RAISED CKHDPZ HANDLE TO COVER,

HANDLE TO L BRACKET 20063-0010 SCREW No.6 x 3/8 NIB HDPZ ST/AB COVER TO CHASSIS,

HEATSINK BRACKET, TRANSFORMER TO CHASSIS

20065-0020 SCREW 2-28 c 5/16 PLAS PNHDPZ CONTROL PCB & L BRACKET TO MOULDING

20065-1000 SCREW K35 x 8 TORX SPACERS/CHASSIS, FRONT PANEL TO CHASSIS

20134-9005∗ SCREW 4BA x ¼ in. POZI PAN TERMINALS 20210-0102 NUT M4 ZPST SAFETY EARTH 20213-0040 CAPTIVE NUT SPIRE No.6 COVER TO CHASSIS,

HANDLE TO COVER, HANDLE TO L BRACKET, HEATSINK MOUNTING, HEATSINK BRACKET, TRANSFORMER

20234-0024 SCREW M3 x 16 PNHDPZ ZPST CONTROL TO GROUND 20236-0010 SCREW M4 x 12 TAMPERPROOF SAFETY EARTH 20612-0011 WASHER FIBRE M3 CONTROL TO MOULDING 20653-0204 CABLE TIE 75 X 2.5MM MAINS HARNESS TO CHASSIS 20661-0256∗ SPACER RND 9/64 IDx1/8 L NYL TERMINALS 20661-0278∗ SPACER HEX 4BA x 9.53 NPBR TERMINALS TO PCB 20661-0605 SPACER, PCB SUPPORT 7/8 NYL DRIVER PCB 20661-0900 SPACER – TRANSIBLOCK HEATSINK 20662-9301 SELF-ADHESIVE FEET 22115-0410 TRANSFORMER – EL302

20

CASE PARTS - EL301/302/561/183/continued… Part Number Description Position 22115-0430 TRANSFORMER – EL183 22115-0440 TRANSFORMER – EL561 22115-0450 TRANSFORMER – EL301 22219-0090 SWITCH ROCKER DPST GREY 12 22225-0222 PUSHBUTTON PB10/50/000 BLACK 22315-0312 FUSE 1.25A TL HRC S/F 22315-0316 FUSE 1.6A TL HRC S/F 22315-0311 FUSE 800mA TL HRC S/F 22315-0325 FUSE 2.5A TL HRC S/F 22491-0120 MAINS LD 2M ST IEC/UK PLUG 5A 22491-0120 MAINS LD 2M ST IEC/EURO PLUG 22491-0120 MAINS LD 2M ST IEC/USA PLUG 22520-0200 AC RECEP 10AMP FUSED SNAP-IN

22571-0675∗ TERMINAL TP/2 RED/GREY

22571-0685∗ TERMINAL TP/2 BLACK/GREY

22571-0696∗ TERMINAL TP/2 GREY/GREY

22571-0691 WASHER ALUMINIUM FOR TP2 EARTH TERMINAL

22575-0204 SKT 4W .156 20AWG (YELLOW) IDT HEATSINK

22575-0206 SKT 6W .156 20AWG (YELLOW) IDT TRANSFORMER/DRIVER PCB

22575-0210 SKT 10W .156 20AWG (YELLOW) IDT CONTROL/DRIVER

29211-0110 HANDLE 6in BLACK/NICKEL

25211-0300 BRIDGE RECTIFIER 25 AMP 200V BR1 (EL183 ONLY)

31512-0690 BRACKET F/PANEL EL/EX S

31512-0700 BRACKET - HEATSINK

33111-0280 BRACKET HANDLE SUPPORT

33147-0130 FRONT MOULDING EL

33331-5820 OVERLAY NAME & LOGO - EL302




33331-5910 OVERLAY TERMINAL AREA

33533-0380 OVERLAY DISPL WINDOW

33536-4070 CHASSIS - PRINTED EL

33536-4080 COVER - PAINTED EL

48511-0960 INSTRUCTION MANUAL

21

PCB ASSEMBLY – CONTROL (Version 1) EL302D & EL302T Part Number Description Position 20661-0800 SPACER TRANSISTOR MTG D6,106 20661-0851 SPACER .56 INCH 7-SEG LED DIS1, 2,101,102 22225-0220 SWITCH PUSH/PUSH SW1,101 22573-0210 HEADER 10 WAY STRAIGHT .156P PJ1,101 22574-0122 SKT DIL 28 PIN IC3,103 23202-0100 RES 10R0F W25 MF 50PPM R50,150 23202-0220 RES 22R0F W25 MF 50PPM R25,125 23202-1100 RES 100RF W25 MF 50PPM R40,140 23202-1220 RES 220RF W25 MF 50PPM R10,110 23202-1470 RES 470RF W25 MF 50PPM R45,145 23202-1330 RES 330RF W25 MF 50PPM R22,122 23202-1680 RES 680RF W25 MF 50PPM R2,102 23202-2100 RES 1K00F W25 MF 50PPM R11,12,23, 46, 48,111,112,123,146,148 23202-2180 RES 1K80F W25 MF 50PPM R41,141 23202-2470 RES 4K70F W25 MF 50PPM R38,39,138,139 23202-2499 RES 4K99F W25 MF 50PPM R34,134 23202-2820 RES 8K20F W25 MF 50PPM R18,118 23202-3100 RES 10K0F W25 MF 50PPM R4,5,14,15,17, 24, 28, 30, 32, 43, 44, 49,

51, 104,105, 114,115,117,124,128,130, 132,143, 144, 149,151

23202-3105 RES 10K5F W25 MF 50PPM R47,147 23202-3143 RES 14K3F W25 MF 50PPM R35,135 23202-3150 RES 15K0F W25 MF 50PPM R33,133 23202-3240 RES 24K0F W25 MF 50PPM R27,127 23202-3330 RES 33K0F W25 MF 50PPM R6, 7, 8,106,107,108 23202-3560 RES 56K0F W25 MF 50PPM R31,131 23202-3750 RES 75K0F W25 MF 50PPM R3,103 23202-4180 RES 180KF W25 MF 50PPM R1,101 23202-4200 RES 200KF W25 MF 50PPM R36, 37,136,137 23202-4220 RES 220KF W25 MF 50PPM R42,142 23202-4470 RES 470KF W25 MF 50PPM R29,129 23202-5100 RES 1M00F W25 MF 50PPM R19,119 23202-6100 RES 10M0F W25 MF 50PPM R13, 26,113,126 23301-0415 RES NETWK SIL 1K0 X 4S RP3,103 23301-0464 RES NETWK SIL 56R X 4S RP1,2,101,102 23320-0003 RES R10 - FERRYALLOY R21,121 23347-0330 POT 10K LIN SPLINE SHAFT 25MM VR1, 2,101,102 23347-0340 POT 10K LOG SPLINE SHAFT 25MM VR3,103 23377-2100 RES PS/H 1K0 CF 10MM VR4,104

22

PCB ASSEMBLY – CONTROL (Version 1) EL302D & EL302T/continued… Part Number Description Position 23377-2220 RES PS/H 2K2 CF 10MM VR6, 9,10,106,109,110 23377-2470 RES PS/H 4K7 CF 10MM VR5,105 23377-4100 RES PS/H 100K CF 10MM VR8,108 23379-1100 RES PS/H 100R CERMET 10MM VR7,107 23424-0443 CAP 10NZ 1KV CER D10 P5 C30,130 23427-0323 CAP 22PG 100V CER NPO P5 C4,5,104,105 23427-0329 CAP 47PG 63V CER N150 P5 C15,17, 29, 42,115,117,129,142 23427-0353 CAP 220PG 100V CER N750 P5T C19,119 23427-9211 CAP 470PK 100V CER MED K P2.5 C32, 33,132,133 23557-0511 CAP 47U 10V ELEC RC2 P2 C7,107 23557-0612 CAP 1U0 100V ELEC RE2 P2 C18, 23, 37,118,123,137 23557-0647 CAP 10U 35V ELEC RE2 P2 C25, 26,125,126 23557-0665 CAP 2U2 50V ELEC RE2 P2 C16,116 23557-0668 CAP 220U 10V ELEC RE2 P2.5 C21,121 23557-0825 CAP 100U 50V LOW ESR P3.5 C20,120 23620-0246 CAP 100NK 63V P/E P5 C3, 6, 8, 9,12, 27, 28, 31,103,106,108,

109,112,127,128,131 23620-0247 CAP 220NK 63V P/E P5 C1,101 23620-0249 CAP 330NK 63V P/E P5 C10,11,110,111 23620-9007 CAP 10NK 100V P/E P5 C13,14, 35,113,114,135 23685-0007 CAP 100NK 160V P/P P10 C2,102 25021-0901 DIO 1N4148 D1, 2, 3, 4, 5, 7, 8,101,102,103,104,105,

107,108 25061-0200 LED - T1 ROUND (3mm) - RED LED1, 2,101,102 25061-0519 DISPLAY 3 DIG .56 LED 9MM LEG DIS1, 2,101,102 25117-0020 DIO 1N5401 D10,110 25336-5590 TRAN PNP BC559C Q1,101 25377-5490 TRAN NPN BC549C Q2,102 27106-0506 IC LM324N IC7,107 27106-0646 IC LF347 BI-FET OP AMP IC5,105 27161-0120 IC V/REF ZRA245(ZR404) 2.45V D6, 106 27164-0507 IC ULN-2003A IC1,101 27226-0520 IC 4052B IC4,104 27226-0530 IC 4053B PIN IC2,102 27231-5740 IC 74HC574 PIN IC6,106 27250-2000 IC MCU8 PIC16C55XTP IC3,103 28502-0010 RESONATOR CER 4MHZ XTAL1,101 35555-2870 PCB - CONTROL

23

PCB ASSEMBLY – CONTROL (Version 1) EL302T (UNIQUE PARTS) Part Number Description Position 22218-0213 SWITCH SLIDE 2P2W SW3


23424-0443 CAP 10NZ 1KV CER D10 P5 C34

23557-0823 CAP 100U 16V LOW ESR P2.5 C138

23620-0246 CAP 100NK 63V P/E P5 C33

PCB ASSEMBLY – CONTROL (Version 2) EL302D & EL302T (SURFACE MOUNT STAGE)

Part Number Description Position 23105-0000 RES SM0805 ZERO OHM R9,R16,R20,R109,R116,R120

23105-0100 RES SM0805 10R0F W1 R50,R150

23105-0220 RES SM0805 22R0F W1 R25,R125

23105-0560 RES SM0805 56R0F W1 R53-60,R153-160

23105-1100 RES SM0805 100RF W1 R40,R140

23105-1220 RES SM0805 220RF W1 R10,R110

23105-1470 RES SM0805 470RF W1 R45,R145

23105-1680 RES SM0805 680RF W1 R2,R102

23105-2100 RES SM0805 1K00F W1 R11-12,R23,R46,R48,R70-73, R111-112,R123,R146,R148,R170-173

23105-2160 RES SM0805 1K60F W1 R135A,R35A

23105-2180 RES SM0805 1K80F W1 R41,R141

23105-2390 RES SM0805 3K90F W1 R34,R134

23105-2470 RES SM0805 4K70F W1 R38-39,R138-139

23105-2820 RES SM0805 8K20F W1 R18,R118

23105-3100 RES SM0805 10K0F W1 R24,R44,R124,R144

23105-3105 RES SM0805 10K5F W1 R47,R147

23105-3110 RES SM0805 11K0F W1 R51,R151

23105-3130 RES SM0805 13K0F W1 R35,R135

23105-3150 RES SM0805 15K0F W1 R33,R133

23105-3270 RES SM0805 27K0F W1 R27,R127

23105-3330 RES SM0805 33K0F W1 R6-8,R106-108

23105-3560 RES SM0805 56K0F W1 R31,R131

23105-3750 RES SM0805 75K0F W1 R3,R103

23105-4200 RES SM0805 200KF W1 R36-37,R136-137

23105-4470 RES SM0805 470KF W1 R29,R42,R129,R142

23105-5100 RES SM0805 1M00F W1 R19,R119

23105-6100 RES SM0805 10M0F W1 R13,R26,R113,R126

24

PCB ASSEMBLY – CONTROL (Version 2) EL302D & EL302T (SURFACE MOUNT STAGE)/ continued…

Part Number Description Position 23106-3100 RES SM0805 10K0D W1 25PPM R4-5,R14-15,R17,R30,R32,R43,

R104-105,R114-115,R117,R130, R132,R143

23106-3110 RES SM0805 11K0D W1 25PPM R28,R128

23405-0221 CAP SM0805 220P CER COG C19,C24,C119,C124

23405-0470 CAP SM0805 47P CER COG C15,C17,C29,C42,C68,C115,C117,C129

23405-0471 CAP SM0805 470P CER COG C32,C43,C132,C143

23461-0020 CAP SM0805 100NZ 50V CER Y5V C6,C27-28,C106,C127-128

25021-0010 DIO SM LL4148 SWITCHING D1-5,D7-8,D101-105,D107-108

25340-1000 TRAN SM PNP BC859C Q1,Q101

25377-1000 TRAN SM NPN BC849C Q2,Q102

27106-1160 IC SM LM324M OP AMP IC7,IC107

27106-1460 IC SM LF347M BIFET OP AMP IC5,IC105

27161-2030 IC SM V/REF ZRC250 2.5V 2% D6,D106

27227-0520 IC SM 4052 IC4,IC104

27227-0530 IC SM 4053 IC2,IC102

27239-5740 IC SM 74HC574 IC6,IC106

27250-2150 IC SM PIC16C55A-04/SO IC3,IC103

28502-1000 RESONATOR SM CSTCR4M00G53-R0 XTL1,XTL101

35555-4370 PCB - CONTROL - EL302D/T

PCB ASSEMBLY – CONTROL (Version 2) EL302D & EL302T

Part Number Description Position 20661-0851 SPACER .56 INCH 7-SEG LED FOR DISP1,2,101,102

22225-0220 SWITCH PUSH/PUSH SPPH11470B SW1,SW101

22573-0210 HEADER 10 WAY STRAIGHT .156P PJ1,PJ101

23185-0000 RES ZERO OHM LK1

23202-1200 RES 200RF W60 MF 50PPM R22,R122

23202-4180 RES 180KF W60 MF 50PPM R1,R101

23320-0003 RES R10 - FERRYALLOY R21,R121

23347-0330 POT 10K LIN SPLINE SHAFT 25MM VR1-2,VR101-102

23347-0340 POT 10K LOG SPLINE SHAFT 25MM VR3,VR103

23377-2100 RES PS/H 1K0 CF 10MM VR4,VR9,VR104,VR109

23377-2220 RES PS/H 2K2 CF 10MM VR6,VR10,VR106,VR110

23377-2470 RES PS/H 4K7 CF 10MM VR5,VR105

23377-4100 RES PS/H 100K CF 10MM VR8,VR108

23379-1100 RES PS/H 100R CERMET 10MM VR7,VR107

25

PCB ASSEMBLY – CONTROL (Version 2) EL302D & EL302T/continued…

Part Number Description Position 23424-0443 CAP 10NZ 1KV CER D10 P5 C30,C130

23557-0500 CAP 1U0 50V ELEC RC2 P1.5 C18,C23,C118,C123

23557-0512 CAP 220U 10V ELEC 7MM P2.5 C21,C121

23557-0513 CAP 10U 35V ELEC 7MM P2 C7,C107

23557-0612 CAP 1U0 100V/50V ELEC RE2 P2 C16,C37,C116,C137

23557-0647 CAP 10U 35V ELEC RE2 P2 C25-26,C125-126

23557-0825 CAP 100U 50V LOW ESR P3.5 C20,C120

23620-0246 CAP 100NK 63V P/E P5 C3,C8-9,C12,C31,C103,C108-109, C112,C131

23620-0247 CAP 220NK 63V P/E P5 C1,C101

23620-0249 CAP 330NK 63V P/E P5 C10-11,C110-111

23620-9007 CAP 10NK 100V P/E P5 C13-14,C113-114

23685-0007 CAP 100NK 250V P/P MKP4 P10 C2,C102

25061-0200 LED - T1 ROUND (3mm) - RED LED1-2,LED101-102

25061-0519 DISPLAY 3 DIG .56 LED 9MM LEG DISP1-2,DISP101-102

25117-0020 DIO 1N5401 D10,D110

27164-0507 IC ULN-2003A IC1,IC101

PCB ASSEMBLY – CONTROL (Version 3) SM STAGE - EL302D/Tv (44115-3081)

Part Number Description Position 23105-0000 RES SM0805 ZERO OHM R9, R16, R20, R109, R116, R120

23105-0100 RES SM0805 10R0F W1 R50, R150

23105-0220 RES SM0805 22R0F W1 R25, R125

23105-0560 RES SM0805 56R0F W1 R53-60, R153-160

23105-1100 RES SM0805 100RF W1 R40, R140

23105-1220 RES SM0805 220RF W1 R10, R110

23105-1470 RES SM0805 470RF W1 R45, R145

23105-1560 RES SM0805 560RF W1 R64

23105-1680 RES SM0805 680RF W1 R2, R102

23105-2100 RES SM0805 1K00F W1 R11-12, R23, R46, R48, R70-73, R111-112, R123, R146, R148, R170-173

23105-2110 RES SM0805 1K10F W1 R62

23105-2160 RES SM0805 1K60F W1 R135A, R35A

23105-2180 RES SM0805 1K80F W1 R41, R141

23105-2220 RES SM0805 2K20F W1 R61

23105-2330 RES SM0805 3K30F W1 R52

23105-2390 RES SM0805 3K90F W1 R34, R134

26

PCB ASSEMBLY – CONTROL (Version 3) SM STAGE - EL302D/Tv (44115-3081)/continued..

Part Number Description Position 23105-2470 RES SM0805 4K70F W1 R38-39, R138-139

23105-2820 RES SM0805 8K20F W1 R18, R118

23105-3100 RES SM0805 10K0F W1 R24, R44, R124, R144

23105-3105 RES SM0805 10K5F W1 R47, R147

23105-3110 RES SM0805 11K0F W1 R51, R151

23105-3130 RES SM0805 13K0F W1 R35, R135

23105-3150 RES SM0805 15K0F W1 R33, R133

23105-3270 RES SM0805 27K0F W1 R27, R63, R127

23105-3330 RES SM0805 33K0F W1 R6-8, R106-108

23105-3560 RES SM0805 56K0F W1 R31, R131

23105-3750 RES SM0805 75K0F W1 R3, R103

23105-4200 RES SM0805 200KF W1 R36-37, R136-137

23105-4470 RES SM0805 470KF W1 R29, R42, R129, R142

23105-5100 RES SM0805 1M00F W1 R19, R119

23105-6100 RES SM0805 10M0F W1 R13, R26, R113, R126

23106-3100 RES SM0805 10K0D W1 25PPM R4-5, R14-15, R17, R30, R32, R43, R104-105, R114-115, R117, R130, R132, R143

23106-3110 RES SM0805 11K0D W1 25PPM R28, R128

23405-0221 CAP SM0805 220P CER COG C19, C24, C119, C124

23405-0470 CAP SM0805 47P CER COG C15,C17,C29,C42,C68,C115,C117,C129

23405-0471 CAP SM0805 470P CER COG C32, C43, C132, C143

23461-0020 CAP SM0805 100NZ 50V CER Y5V C6, C27-28, C106, C127-128

25021-0010 DIO SM LL4148 SWITCHING D1-5, D7-8, D101-105, D107-108

25340-1000 TRAN SM PNP BC859C Q1, Q101

25377-1000 TRAN SM NPN BC849C Q2, Q102

27106-1160 IC SM LM324M OP AMP IC7, IC107

27106-1460 IC SM LF347M BIFET OP AMP IC5, IC105

27161-2030 IC SM V/REF ZRC250 2.5V 2% D6, D106

27164-1070 IC SM ULN2003AD IC1, IC101

27227-0520 IC SM 4052 IC4, IC104

27227-0530 IC SM 4053 IC2, IC102

27239-5740 NC SM 74HC574

27250-2150 IC SM PIC16C55A-04/SO IC3, IC103

28502-1000 RESONATOR SM CSTCR4M00G53-R0 XTL1, XTL101

35555-4710 PCB - CONTROL - EL302D/TV

IC6, IC106

27

PCB ASSEMBLY – CONTROL (Version 3) - EL302D/Tv (44115-3080)

Part Number Description Position 20661-0851 SPACER .56 INCH 7-SEG LED 3.5H FOR DISPLAYS

20661-0871 SPACER TOWER RND 4.8ODx12L BLK LED101-103

22219-0500 SWITCH 2 POLE MOMENTARY SW2

22225-0220 SWITCH PUSH/PUSH SPPH11470B SW1, SW101


22573-0210 HEADER 10 WAY STRAIGHT .156P PJ1, PJ101

23202-1200 RES 200RF W60 MF 50PPM R22, R122

23202-4180 RES 180KF W60 MF 50PPM R1, R101

23320-0003 RES R10 - FERRYALLOY R21, R121

23347-0330 POT 10K LIN SPLINE SHAFT 25MM VR1-2, VR101-102

23347-0340 POT 10K LOG SPLINE SHAFT 25MM VR3, VR103

23377-2100 RES PS/H 1K0 CF 10MM VR4, VR9, VR104, VR109

23377-2220 RES PS/H 2K2 CF 10MM VR6, VR10, VR106, VR110

23377-2470 RES PS/H 4K7 CF 10MM VR5, VR105

23377-3221 RES PS/H 22K CF 10MM HEX ADJST VR11

23377-4100 RES PS/H 100K CF 10MM VR8, VR108

23379-1100 RES PS/H 100R CERMET 10MM SKEL VR7, VR107

23424-0443 CAP 10NZ 1KV CER D10 P5 C30, C34, C130

23557-0500 CAP 1U0 50V ELEC RC2 P1.5 C18, C23, C118, C123

23557-0512 CAP 220U 10V ELEC 7MM P2.5 C21, C121

23557-0513 CAP 10U 35V ELEC 7MM P2 C7, C107

23557-0612 CAP 1U0 100V/50V ELEC RE2 P2 C16, C37, C116, C137

23557-0647 CAP 10U 35V ELEC RE2 P2 C25-26, C125-126, C138

23557-0825 CAP 100U 50V LOW ESR P3.5 C20, C120

23620-0246 CAP 100NK 63V P/E P5 C3, C8-9, C12, C31,C33,C103,C108-109, C112, C131

23620-0247 CAP 220NK 63V P/E P5 C1, C101

23620-0249 CAP 330NK 63V P/E P5 C10-11, C110-111

23620-9007 CAP 10NK 100V P/E P5 C13-14, C113-114

23685-0007 CAP 100NK 250V P/P MKP4 P10 C2, C102

25061-0200 LED - T1 ROUND (3mm) - RED LED1-2, LED101-103

25061-0519 DISPLAY 3 DIG .56 LED 9MM LEG DISP1-2, DISP101-102

25117-0020 DIO 1N5401 D10, D110

28

PCB ASSEMBLY - DRIVER - EL302D & EL302T Part Number Description Position 20030-0263 WASHER M3 ZPST FOR IC8/Q1, IC108/Q101

20038-9501 WASHER M3 Spring FOR IC8/Q1, IC108/Q101

20210-0101 NUT M3 ZPST FOR IC8/Q1, IC108/Q101

20234-0011 SCREW M3 X 10 PNHDPZ ZPST FOR IC8/Q1, IC108/Q101

20611-0003 BUSH POLYESTER TO220 FOR IC8/Q1 ,IC108/Q101

20613-0006 SIL-PAD TO220 FOR IC8/Q1, IC108/Q101

20670-0180 HEATSINK PCB MTG 63MM HIGH FOR IC8/Q1, IC108/Q101

22240-0120 RELAY 12V SPDT RL1,101

22315-0454 FUSE 2.0AT SUBMIN PCB MTG FS1, 2,101,102

22573-0204 HEADER 4 WAY STRAIGHT .156P PJ7,107



23185-0000 RES ZERO OHM LK1-5,101-105

23202-0470 RES 47R0F W25 MF 50PPM R19, 50, 56,119,150,156

23202-1100 RES 100RF W25 MF 50PPM R2, 3,102,103

23202-1270 RES 270RF W25 MF 50PPM R59,159

23202-2100 RES 1K00F W25 MF 50PPM R58,158

23202-2220 RES 2K20F W25 MF 50PPM R4, 5, 65, 66,104,105,165,166

23202-3470 RES 47K0F W25 MF 50PPM R62, 63,162,163

23202-3820 RES 82K0F W25 MF 50PPM R60,160

23202-4300 RES 300KF W25 MF 50PPM R64,164

23202-5330 RES 3M30F W25 MF 50PPM R61,161

23206-0010 RES 1R00F W60 MF 100PPM R20-23,120-123

23206-2220 RES 2K20F W60 MF 50PPM R67,167

23557-0615 CAP 470U 16V C22,122

23557-0647 CAP 10U 35V ELEC RE2 P2 C23, 24,123,124

23557-0654 CAP 1000U 63V ELEC RE2 P7.5 C31-34,131-134

23557-0655 CAP 470U 35V C21,121

23557-0658 CAP 100U 25V ELEC RE2 P2.5 C37,137

23620-0257 CAP 2U2K 100V P/E P22.5 C35, 36,135,136

23685-0008 CAP 100NK 160V P/P P15 C30,130

25021-0901 DIO 1N4148 D9,12,109,112

25115-0907 DIO 1N4002 D1-4,8,101-104,108

25117-0020 DIO 1N5401 17,19,21, 23,117,119,121,123

25130-0231 DIO ZEN 8V2 W4 D10,110

25130-0903 DIO ZEN 5V1 W4 D11,111

29

PCB ASSEMBLY - DRIVER - EL302D & EL302T/continued… Part Number Description Position 25383-0505 TRAN NPN BC338 Q5-7,105-107

25383-0507 TRAN NPN BC546 Q4, 104

25386-9300 TRAN TIP31A Q1, 101

27106-0513 IC LM358N IC9,109

27160-0009 IC V/REG 7805 IC8,108

35515-1580 PCB - DRIVER

PCB ASSEMBLY - 3V/5V - EL302T Part Number Description Position 20613-0007 SIL-PAD TO220 PLAIN IC203

20670-0135 CLIP GP02 FOR PCB MTG H/SINKS IC203

20670-0300 HEATSINK PCB MTG 63MM PLAIN IC203

22315-0457 FUSE 3.0AT SUBMIN PCB MTG FS201



23202-1240 RES 240RF W25 MF 50PPM R201

23202-1249 RES 249RF W25 MF 50PPM R208

23202-1649 RES 649RF W25 MF 50PPM R207

23202-1750 RES 750RF W25 MF 50PPM R202, 205, 206

23202-1910 RES 910RF W25 MF 50PPM R203

23202-2270 RES 2K70F W25 MF 50PPM R204

23424-0443 CAP 10NZ 1KV CER D10 P5 C201

23557-0658 CAP 100U 25V ELEC RE2 P2.5 C205

23557-9122 CAP 4700U 16V ELEC RE2 P7.5 C203, C204

25115-0907 DIO 1N4002 D201-204, D206

25117-0020 DIO 1N5401 D205

27103-0003 IC LM393 IC201

27160-0240 IC V/REG LM2991T STAGGERED LDS C203

27160-0900 IC V/REG 431 TO-92 IC202

35515-1590 PCB - 3V/5V - EL302T

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PCB ASSEMBLY – VARIABLE 1.5/5V SM STAGE - EL302Tv (44115-3091)

Part Number Description Position 22156-0030 CHOKE SM 10UH L1

23105-1330 RES SM0805 330RF W1 R6

23105-1910 RES SM0805 910RF W1 R12

23105-2150 RES SM0805 1K50F W1 R10

23105-2220 RES SM0805 2K20F W1 R7-8

23105-2330 RES SM0805 3K30F W1 R2, R9

23105-2470 RES SM0805 4K70F W1 R3-4

23105-3110 RES SM0805 11K0F W1 R11

23105-3270 RES SM0805 27K0F W1 R5

23105-4100 RES SM0805 100KF W1 R1

23405-0470 CAP SM0805 47P CER COG C11

23414-3226 CAP SM1210 22UK 16V CER C1-3

23461-0015 CAP SM0805 10NK 50V CER X7R C6

23461-0020 CAP SM0805 100NZ 50V CER Y5V C10

23461-0040 CAP SM0805 1N0K 50V CER X7R C8

23461-0070 CAP SM0805 4N7J 50V CER X7R C7

23461-0200 CAP SM0805 2N2J 50V CER X7R C9

27106-1110 IC SM LM358M DUAL OP AMP IC2

27168-1040 IC SM MP2305 IC1

35555-4720 PCB - 1.5/5V VARIABLE EL302TV

PCB ASSEMBLY - VARIABLE 1.5/5V - EL302Tv (44115-3090)

Part Number Description Position 22315-0457 FUSE 3.0AT SUBMIN PCB MTG UL FS1

22573-0222 HEADER 2 WAY STR F/LOCK .156 PJ1

22575-0208 SKT 8W .156 20AWG (YELLOW)IDT

23377-4100 RES PS/H 100K CF 10MM VR1

23424-0443 CAP 10NZ 1KV CER D10 P5 C12

23557-0699 CAP 10000U 16V ELEC P7.5 C4

23620-0267 CAP 100NK 100V P/E P5 C5

25115-0700 DIO 11DQ03 D1

25117-0020 DIO 1N5401 D2-6

27001-0120 OPTO-COUPLER LINEAR IL300 IC4

27160-0900 IC V/REG 431 TO-92 IC3

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HEATSINK ASSEMBLY - EL302D & EL302T Part Number Description Position 20030-0240 WASHER 4BA ZPST

20038-9503 WASHER M3.5 SRING

20100-9201 NUT 4BA FULL - STEEL

20134-9007 SCREW 4BA x ½ POZI PAN

20611-0007 TRANSISTOR MOUNT - TO3

20613-0014 SIL-PAD TO3

20670-9001 HEATSINK KP314

22451-0200 SOLDER TAG 4BA

25386-9201 TRANSISTOR 2N3055

CASE PARTS - EL302D, EL302T & EL302Tv ∗ Parts marked with ∗ change with the introduction of the revised 'safety' terminals, see last Parts List.

Part Number Description Position 20030-0240∗ WASHER 4BA ZPST CONTROL TO SPACER

20030-0263 WASHER M3 ZPST CONTROL PCB TO GROUND STANDOFFS, BRACKET TO MOULDING

20030-0264 WASHER M2.5 ZPST CONTROL PCB

20030-0266 WASHER M4 ZPST SAFETY EARTH

20037-0247∗ WASHER 4BA SHK/PROOF I/T ZPST EARTH TERMINAL

20037-0301 WASHER M3 SHK/PROOF I/T ZPST CONTROL TO MOULDING

20037-0305∗ WASHER 5/16in.SHK/PRF I/T ZPST EARTH TERMINAL

20037-0401 SOLDER TAG SHAKEPROOF - 4BA SAFETY EARTH

20038-9502 WASHER M4 SPRING SAFETY EARTH

20038-9503 WASHER M3.5 SPRING CONTROL TO TERMINALS

20063-0020 SCREW No.6 x 1/2 NIB HDPZ ST/AB TRANSFORMER

20234-0024 SCREW M3 x 16 PNHDPZ ZPST CONTROL TO MOULDING

20661-0604 SPACER, PCB SUPPORT ½ in. NYL 3V/5V PCB

20661-0605 SPACER, PCB SUPPORT 7/8 in. NYL DRIVER PCB

20661-0900 SPACER – TRANSIBLOCK HEATSINKS

20062-9501 SCREW No.6x3/4 in RAISED CKHDPZ HANDLE TO COVER, HANDLE TO L BRACKET

20063-0010 SCREW No.6x3/8 NIB HDPZ ST/AB COVER TO CHASSIS, HEATSINK BRACKET

20062-9304 SCREW No.6x5/8 in. POZI. PAN HEATSINK MOUNTING

20065-0020 SCREW 2-28 x 5/16 PLAS PNHDPZ CONTROL PCB & L BRACKET TO MOULDING

20065-1000 SCREW K35 x 8 TORX DRIVER PCB, 3V/5V PCB, FRONT PANEL TO CHASSIS

20134-9005∗ SCREW 4BA x 1/4 PNHDPZ TERMINALS

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CASE PARTS - EL302D, EL302T & EL302Tv/continued… Part Number Description Position 20210-0102 NUT M4 ZPST SAFETY EARTH

20213-0010 CAPTIVE NUT SNU-1219-17-00 TRANSFORMER

20213-0040 CAPTIVE NUT SPIRE NO.6 COVER TO CHASSIS, HANDLE TO COVER, HANDLE TO L BRACKET, HEATSINK MOUNTING, HEATSINK BRACKET

20236-0010 SCREW M4 x 12 TAMPERPROOF SAFETY EARTH

20612-0011 WASHER FIBRE M3 CONTROL PCB

20653-0204 CABLE TIE 75 x 2.5MM MAINS HARNESS TO CHASSIS

20661-0256∗ SPACER RND 9/64 IDx1/8 L NYL FOR TERMINALS

20661-0278∗ SPACER HEX 4BA x 9.53 NPBR TERMINALS TO PCB

20662-9301 SELF-ADHESIVE FEET

22115-0400 TRANSFORMER

22219-0090 SWITCH ROCKER DPST GREY 12

22225-0222 PUSHBUTTON PB10/50/000 BLACK

22315-0302 FUSE 2A TL HRC S/F FOR 230V VERSIONS

22315-0304 FUSE 4A TL HRC S/F FOR 115V VERSIONS

22443-0002 GROMMET - 3109A

22491-0120 MAINS LD 2M ST IEC/UK PLUG 5A

22491-0270 MAINS LD 2M ST IEC/EURO PLUG 5A

22491-0040 MAINS LD 2M ST IEC/USA PLUG

22520-0200 AC RECEP 10AMP FUSED SNAP-IN

22571-0675∗ TERMINAL TP/2 RED/GREY

22571-0685∗ TERMINAL TP/2 BLACK/GREY

22571-0696∗ TERMINAL TP/2 GREY/GREY

22571-0691 WASHER ALUMINIUM FOR TP2 EARTH TERMINAL

22575-0202 SKT 2W .156 20AWG IDT TRANSFORMER

22575-0204 SKT 4W .156 20AWG IDT HEATSINKS

22575-0206 SKT 6W .156 20AWG IDT TRANSFORMER

22575-0207 SKT 7W .156 20AWG IDT 3V/5V OUTPUT

22575-0210 SKT 10W .156 20AWG IDT CONTROL/DRIVER

29211-0110 HANDLE BLACK/NICKEL

31512-0670 BRACKET - HEATSINK

33111-0280 BRACKET HANDLE SUPPORT

33147-0120 FRONT MOULDING – EL302D/T

33147-0300 FRONT MOULDING – EL302D/Tv

31512-0680 BRACKET – FRONT PANEL

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CASE PARTS - EL302D, EL302T & EL302Tv/continued… Part Number Description Position 33331-5760 OVERLAY NAME & LOGO EL302T

33331-8880 OVERLAY NAME & LOGO EL302Tv

33331-5770 OVERLAY TERMINAL AREA EL302T

33331-8890 OVERLAY TERMINAL AREA EL302Tv

33331-5780 OVERLAY NAME & LOGO EL302D

33331-5790 OVERLAY TERMINAL AREA EL302D

33533-0370 OVERLAY DISPLAY WINDOW

33536-3950 CHASSIS

33536-3960 COVER

37113-2110 BUTTON 6.5MM DIAMETER (EL302Tv only)

37151-0330 KNOB 21MM SPLINE SHAFT L/GREY

37541-0660 LABEL VOLTAGE WARNING

48511-0330 INSTRUCTION MANUAL, INCLUDING EL302T

48511-0960 INSTRUCTION MANUAL, INCLUDING EL302Tv

PARTS CHANGES for SAFETY TERMINALS (from mid 2006)

22571-1080 TERMINAL PSU SAFETY RED/GREY replaces 22571-0675

22571-1090 TERMINAL PSU SAFETY BLACK/GREY replaces 22571-0685

22571-1100 TERMINAL PSU SAFETY GREY/GREY replaces 22571-0696

22571-1101 WASHER ALUMINIUM – SAFETY TERMINALS replaces 22571-0691

20661-0295 SPACER HEX M4 x 8 replaces 20661-0278

20037-0271 WASHER M4 x 12 replaces 4BA fasteners, see diagrams

20037-0304 WASHER M4 SHAKEPROOF replaces 4BA fasteners, see diagrams

20030-0266 WASHER M4 PLAIN replaces 4BA fasteners, see diagrams

20210-0110 NUT M4 BARBED replaces 4BA fasteners, see diagrams

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Component Layouts & Circuit Diagrams

Control Pcb (Single) – Version 1

35

Control Pcb (Single) – Version 2

Driver Pcb - Single

36

Auxiliary 3·3V/5V Pcb – EL302T

Auxiliary 1·5 to 5V Pcb – EL302Tv

Driver Pcb – Dual/Triple

37

Control Pcb (Version 1) – EL302D/T

Page 38

Control Pcb (Version 2) – EL302D/T

Page 39

Control Pcb (Version 3) – EL302D/Tv

Page 40

EL SINGLE CONTROL - Version 1

Page 41

EL SINGLE CONTROL - Version 2

Page 42

EL SINGLE - DRIVER PCB

Page 43

e.g. RP3, C9 and R24 on Channel A are RP103, C109 and R124 on Channel B, see Component LayoutPage 44

EL302D/T CONTROL - Version 1 - Channel A

Channel B is identical to Channel A; Channel B component references are all numbered from 100 upwards

Channel B is identical to Channel A; Channel B component references are all numbered from 100 upwardse.g. RP3, C9 and R24 on Channel A are RP103, C109 and R124 on Channel B, see Component Layout

EL302D/T CONTROL - Version 2 - Channel A

Page 45

e.g. RP3, C9 and R24 on Channel A are RP103, C109 and R124 on Channel B, see Component LayoutPage 46

EL302D/Tv CONTROL - Version 3 - Channel A

Channel B is identical to Channel A; Channel B component references are all numbered from 100 upwards

EL302D/T DRIVER PCB & 3V/5V PCB

EL302Tv 1.5/5V VARIABLE OUTPUT

EL Series Service Manual (Including EL302Tv)

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Transcript of EL Series Service Manual (Including EL302Tv)