1Colour Television Chassis

A7H.1

Controls (Diagram A5) 18 13,14Tuner + IF + connections (Diagram A6) 19 13,14Video + sound (Diagram A7) 20 13,14Smart loader interface (Diagram A6a) 21 13,14SVSH connection (Diagram A8) 21 13,14Teletext (Diagram A9) 22CRT (14" mn, 20"+21" nn) (Diagram B1) 23 23Clock display (Diagram E1) 24Published by LV 9870 TV Service Department Printed in The Netherlands Subject to modification 5 4822 727 21644

Copyright reserved 1998 Philips Consumer Electronics B.V. Eindhoven, TheNetherlands. All rights reserved. No part of this publication may be reproduced,stored in a retrieval system or transmitted, in any form or by any means, electron-ic, mechanical, photocopying, or otherwise without the prior permission of Philips.

Radio module (Diagram E2) 248 Electrical adjustments 259 Circuit Description 2610 Directions for use 33

and Mechanical data11 List of abbreviations 36

and mechanical data12 Spareparts list 38

Published by LV 9870 TV Service DepartmentPrinted in The NetherlandsCopyright reserved 1998 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwisewithout the prior permission of Philips.Subject to modification5 4822 727 21644ServiceManual

QUADRIGA

CL 76532054_004.AI181197

Content1 Technical specifications 22 Connection facilities 33 Safety instructions, Maintenance instructions, 4

Warnings and notes4 Mechanical instructions 65 Fault finding tree 7

Repair facilities 76 Block diagram 11

Survey of test points 12Overview wave forms 12Diagram supply voltages survey 12

7 Electrical Diagrams and print lay-outsDiagram PWB

Power supply (Diagram A1) 15 13,14Deflection (Diagram A3) 16 13,14Synchronisation (Diagram A4) 17 13,14

1 Technical specifications2 A7H.11 Technical specifications1.1 Chassis specification

Mains voltage : 220-240V 10% AC;50Hz ( 5%)

Power cons. at 230V~ : 14" 43W (stand-by

2 Connection facilities 3A7H.12 Connection facilities2.1 Euroconnector:

1 - Audio R (0V5 RMS 1kOhm k2 - Audio R (0V2 - 2V RMS 10kOhm) j3 - Audio L (0V5 RMS 1kOhm) k4 - Audio v5 - Blue v6 - Audio L (0V2 - 2V RMS 10kOhm) j7 - Blue (0V7pp/75Ohm)8 - CVBS-

status 1 (0-2V int., 10-12V ext.) j9 - Green v10- SDA to

smart-loader

11- Green (0V7pp/75Ohm)

12- SCL tosmart-loader

13- Red v14- +5Sl to

smart-loader

15- Red (0V7pp/75Ohm)16- RGB-

status (0-0V4 int.)(1-3V ext. 75Ohm)17- CVBS v18- CVBS v19- CVBS (1Vpp/75Ohm) k20- CVBS (1Vpp/75Ohm) j21- Earth

screen

2.2 Location of panels

CRT

CONTROL

SYNCHRONISATION

TUNER + IF + SCART

CL 76532054_005.AI181197

P.9A1

P.18E2

POWER SUPPLY

P.12A5P.13A6P.14A7

P.16A9

MAIN CHASSISP.10A3P.11A4

DEFLECTION

TELETEXT

VIDEO + SOUND

P.17B1

P.18E1CLOCK PANELRADIO MODULE

P.15A6A SMART LOADER INTERFACE

P.15A8INTERFACE

3 Safety instructions, Maintenance instruction,4 A7H.13 Safety instructions, Maintenance instruction, Warnings and Notes3.1 Safety instructions for repairs

Figure 3-1

1. Safety regulations require that during a repair: the set should be connected to the mains via an

isolating transformer; safety components, indicated by the symbol (see fig.

3.1), should be replaced by components identical tothe original ones;

when replacing the CRT, safety goggles must be worn.

2. Safety regulations require that after a repair the set mustbe returned in its original condition. In particular attentionshould be paid to the following points. As a strict precaution, we advise you to resolder the

solder joints through which the horizontal deflectioncurrent is flowing, in particular: all pins of the line output transformer (LOT); fly-back capacitor(s); S-correction capacitor(s); line output transistor; pins of the connector with wires to the deflection

coil; other components through which the deflection

current flows.

Note: This resoldering is advised to prevent badconnections due to metal fatigue in solder joints and istherefore only necessary for television sets older than2 years. The wire trees and EHT cable should berouted correctly and fixed with the mounted cableclamps.

The insulation of the mains lead should be checked forexternal damage.

The mains lead strain relief should be checked for itsfunction in order to avoid touching the CRT, hotcomponents or heat sinks.

The electrical DC resistance between the mains plugand the secondary side should be checked (only forsets which have a mains isolated power supply). Thischeck can be done as follows: unplug the mains cord and connect a wire between

the two pins of the mains plug; set the mains switch to the on position (keep the

mains cord unplugged!); measure the resistance value between the pins of

the mains plug and the metal shielding of the tuneror the aerial connection on the set. The readingshould be between 4.5 MW and 12 MW;

switch off the TV and remove the wire between thetwo pins of the mains plug.

The cabinet should be checked for defects to avoidtouching of any inner parts by the customer.

3.2 Maintenance instruction

It is recommended to have a maintenance inspection carriedout by a qualified service employee. The interval depends onthe usage conditions:

When the set is used in circumstances with higher dust,grease or moisture levels, for example in a kitchen, therecommended interval is 1 year.

The maintenance inspection contains the following actions: Execute the above mentioned 'general repair

instruction'. Clean the power supply and deflection circuitry on the

chassis. Clean the picture tube panel and the neck of the picture

tube.

3.3 Warnings

1. ESDAll ICs and many other semiconductors are susceptible toelectrostatic discharges (ESD). Careless handling duringrepair can reduce life drastically. When repairing, makesure that you are connected with the same potential as themass of the set by a wristband with resistance. Keepcomponents and tools also at this same potential. Available ESD protection equipment: anti-static table mat (large 1200x650x1.25mm) 4822

466 10953 anti-static table mat (small 600x650x1.25mm) 4822

466 10958 anti-static wristband 4822 395 10223 connection box (3 press stud connections, 1 M ohm)

4822 320 11307 extension cable (2 m, 2 M ohm; to connect wristband

to connection box) 4822 320 11305 connecting cable (3 m, 2 M ohm; to connect table mat

to connection box) 4822 320 11306 earth cable (1 M ohm; to connect any product to mat or

connection box) 4822 320 11308 complete kit ESD3 (combining all 6 prior products -

small table mat) 4822 310 10671 wristband tester 4822 344 13999

2. In order to prevent damage to ICs and transistors, all high-voltage flashovers must be avoided. In order to preventdamage to the picture tube, the method shown in Fig. 3.2should be used to discharge the picture tube. Use a high-voltage probe and a multimeter (position DC-V). Dischargeuntil the meter reading is 0V (after approx. 30s).

3. Together with the deflection unit and any multipole unit, theflat square picture tubes used from an integrated unit. Thedeflection and the multipole units are set optimally at thefactory. Adjustment of this unit during repair is therefore notrecommended.

4. Be careful during measurements in the high-voltagesection and on the picture tube.

5. Never replace modules or other components while the unitis switched on.

6. When making settings, use plastic rather than metal tools.This will prevent any short circuits and the danger of acircuit becoming unstable.

7. Wear safety goggles during replacement of the picture tube

3.4 Notes

1. The direct voltages and oscillograms should be measuredwith regard to the tuner earth , or hot earth as this is called(see fig. 3.3) When the set is used under normal circumstances, forexample in a living room, the recommended interval is 3 to5 years.

2. The direct voltages and oscillograms shown in thediagrams are indicative and should be measured in theService Default Mode (see chapter 8) with a colour barsignal and stereo sound (L:3 kHz, R:1 kHz unless statedotherwise) and picture carrier at 475.25 MHz.

3 Safety instructions, Maintenance instruction, 5A7H.13. Where necessary, the oscillograms and direct voltages are

measured with and without aerial signal. Voltages in thepower supply section are measured both for normaloperation and in standby . These values are indicated bymeans of the appropriate symbols (see fig. 3.3).

4. The picture tube PWB has printed spark gaps. Each sparkgap is connected between an electrode of the picture tubeand the Aquadag coating.

5. The semiconductors indicated in the circuit diagram and inthe parts lists are completely interchangeable per positionwith the semiconductors in the unit, irrespective of the typeindication on these semiconductors.

6. Manufactured under license from Dolby LaboratoriesLicensing Corporation.

7. DOLBY, the double D symbol and PRO LOGIC aretrademarks of Dolby Laboratories Licensing Corporation.

Figure 3-2

Figure 3-3

V

CL 26532098/042140792

tuner earth tuner aarde la masse du tuner Tuner-Erde

massa del tuner tierra del sintonizador

with aerial signal met antenne signaal

avec signal d'antenne mit Antennensignal

con segnale d'antenna con la seal de antena

normal condition normaal bedrijf fonctionnement normal normaler Betrieb

funzionamento normale funcionamiento normal

hot earth hete aarde la terre directe heien Erde

massa calda tierra caliente

without aerial signal zonder antenne signaal

sans signal d'antenne.ohne Antennensignal

senza segnale d'antenna sin la seal de antena

stand by stand by position de veille in Bereitschaft

modo di attesa posicin de espera

4 Mechanical instructions6 A7H.14 Mechanical instructionsFor the main carrier two service positions are possible (Fig.

4.1):

A: For faultfinding on the component side of the main carrierB: For (de)soldering activities on the copper side of the maincarrier

Position A can be reached by first removing the mains cordfrom it's fixation, then loosen the carrier lips (1) and then pullingthe carrier panel (2) for approximately 10 cm.

Position B can be reached from position A after disconnectingthe degaussing cable. Put the carrier on the line transformerside.

Figure 4-1

CL 76532054_006.AI181197

1

1

2

A B

5Fault finding tree & Repair facilities

7A

7H.1

5Fault finding tree & Repair facilities

5.1Fault finding tree

N

ure OK

k::,n:0015-6C

Check:Voltage:

+40D R3427 Ts 7401/02 Ts7400 R3404/05 Plug 0040 Signal on: P43 Ic7015-6E

or

CheFu15

D6D6Ts7R35R3

ariabler.

T S-7504 40V

age

Check:D6502,Ts7501,Ts7502

K!

?

No

Yes Check:D6501,Ts7502

If de Fi "F

Check:C2422L5424R3430Plug 0041Linedefl.-

coil.SWITCH ON THE SET(with the mains switch

or Remote Control)No PictureNo Sound

IsVoltage +96S

Disconnect 3415, 5415and measure +96S again

Measure voltage"P1" on C2516

IsVoltage C2516

=> 300Vdc?

Check:Ts7103,Ts7420,Ts7421

Reconnect 3415, 5415

Yes

No

Signal "L4"= OK ?

Signal "L7"= OK ?

Signal "L5"= OK ?

YesNo

Check:Supp.+9SFuse 1502D6503Ic7015

ActivateService-defaultalignment mode

Blinks"One time"

Blinks"Two times"

p errorCheck :Ic 7600

I2C BUSerror orblocked

Eepromerror

Check:IC7685

LEDBlinks "N" times

Yes

Yes

Yes

No

No

No

o

Yes

No SoundPicture = OK

CheckVoltage: +8Sb on

Pin2 Ic7157,R3523 (1ohm)

Controlvoltage onPin5 Ic7157,

Signal on:Pin5 Ic7015-6F,Pin50 Ic7015-6F,IC7157

No PictSound =

Check:Voltage:+14D, VG2+8Va,+8Ve,P1/9 Ic7271Signal on:P21 Ic7015-6DP30 Ic7015-6CP31 Ic7015-6CP7 Ic7015-6A

ChecVoltage

+8ESignal op27 Ic76p35 Ic70

CheckVoltage:+160V

(on CRT panel)Ic7015-6D

White NoCoul

"

F

i

r

s

t

c

h

e

c

k

a

f

t

e

r

r

e

p

a

i

r

"

Check:Ts7422D6423D6424

ck:se01,506,514,50414,

515

Check:D6502,D6510Ts7504

Connect TV set to a vmainstransforme

Connect scoop to FEAdjust mains-voltage to

Increase mains-voltto 82 - 85V

"SOPS" supply is O

Voltage onC2515 >100Vdc

The FET 7504is switching?

No

Yes

fect comp. is replaced:rst carry out irst check after repair"

(SDAM) see chapter 6

=>95Vdc(14") ?=>100Vdc(21") ?

IsVoltage +96S

=>95Vdc(14") ?=>100Vdc(21") ?

5 Fault finding tree & Repair facilities8 A7H.15.2 Functional blocks

On both the service printing on the copper and the componentside, functional blocks are indicated by lines and text.

5.3 Test points

The AA5H chassis is equipped with test points in the serviceprinting on both sides of mono-board. These test points arereferring to the functional blocks as mentioned above:

P1-P2-P3, etc: Test points for the power supply L1-L2-L3, etc: Test points for the line drive and line

output circuitry F1-F2-F3, etc: Test points for the frame drive and

frame output circuitry S1-S2-S3, etc: Test points for the synchronisation

circuitry V1-V2-V3, etc: Test points for the video processing

circuitry A1-A2-A3, etc: Test points for the audio processing

circuitry C1-C2-C3, etc: Test points for the control circuitry T1-T2-T3, etc: Test points for the teletext processing

circuitry

The numbering is done in a for diagnostics logical sequence;always start diagnosing within a functional block, in thesequence of the relevant test points, for that functional block.

5.4 Service default-alignment mode (SDAM)

The service default-alignment mode is a pre-defined modewhich can be used for faultfinding (especially when the TVgives no picture at all). All oscillograms and DC voltages in thisservice manual are measured in the service default-alignmentmode. Alignment (if present) are also done in this mode.

5.4.1 Activate the service default-alignment mode

Activate the service default-alignment mode can be done in 2ways:

1. By short-circuiting the service pins PT1 and PT2 of themicrocomputer (pin 14 of IC7600) while pressing themains-switch.

2. From normal operation mode by pressing the button"DEFAULT" or "ALIGN" on the DST (Dealer Service Tool)RC7150.

5.4.2 Leaving the service default-alignment mode

Leaving the service default-alignment mode to normaloperation can only be done by the stand-by on the remotecontrol or by pressing diagnose 99 followed by the OK-buttonon the DST (so not via mains switch "off"; after mains switch"off" and then "on" again the set will start up in the servicedefault-alignment mode again to enable easy faultfinding).

Fig. 5.1

5.4.3 Functions of the service default-alignment mode

1. All analogue settings (volume, contrast, brightness andsaturation) are in the mid position.

2. Set is tuned to 475.25 Mhz3. Delta volume settings are not used (delta volume setting =

a delta on the volume setting)4. OSD error message (present available error code) is

displayed continuously5. The +key and the -key of TV will act as search and auto

store on the maximum program number.6. Automatic switch off function (set switches "off" after 15

minutes no IDENT) will be switched off7. Hotel mode will be disabled8. All other functions remain normal controllable9. Software version of the microprocessor used in that typical

set is displayed in the right top corner10. A counter in the middle of the screen indicate the normal

operation hours of the set in a hexadecimal code (everytime the set is switched "on" the counter is incremented by1 hour, so +1 at the counter).

11. The "S" in the middle of the screen above the counterindicate that the set is in the service default-alignmentmode

12. Option code. This code indicates the Options setting of theset.

13. Error code history; The 5 last different error codes occurredare stored in the EEPROM memory; last error code

2 3 0 0 0 - means two error codes present in the buffer; lastdetected error code is error code 2, previous detected errorcode is error code 3

The error code history buffer is cleared when the Service Menuis left by the stand-by command or by diagnose 99 command.In case the Service menu is left by the mains switch "off" theerror code history buffer will not be cleared.

With commands diagnose 1..5 on the DST it is possible to readout the error-buffer. This can be done on the following manner:

press the diagnose button on the DST. press the number of the error position you want to read. press the OK-button on the DST.

Diagnose 1 is the most actual error. So the left position of theerror-buffer. Diagnose 5 displays the most right position of theerror-buffer. If there is an error on the selected position the ledwill blink twice the error code. The error code on the DST hasto be ignored. Diagnose 1..5 is an powerful tool to read out theerror-buffer when there is no picture.

5.5 Option setting

All option setting are done in the normal menus. These menuscan be selected by selecting the maximum TV-channelfollowed by pushing the volume/program selection button andat the same time pressing the volume-minus button for more

"S" for service menu active --> S

Option code + Counter + software version --> F4 0023 1.0

Error code history --> 3 2 0 0 0detected will be displayed on the left side (see for anoverview of all possible error codes Fig. 5.1), so e.g.: 0 0 00 0 - means no error codes present in the buffer; 3 0 0 0 0- means one error code present in the buffer; error code 3;

then four seconds. With cursor up/down one of the items canbe selected. With cursor right/left the items can be changed.

New option settings are activated immediately.

5 Fault finding tree & Repair facilities 9A7H.1The following options can be chosen:

system SINGLE; for a BG,DK or BG/DK set MULTI F; for a BG+L+I set UHF; for a I, UHF only set

Teletext YES/NO; Teletext can be selected yes or no

clock YES/NO; Clock can be selected yes or no

radio INT; To select internal radio tuner EXT; This means that the radio is external. In this way

TV-presets could be used as radio. The installation ofthese kind of programs is the same as for TVprogrammes. Radio channels can be modulated by thesystem installer on TV frequencies.

NO; No radio available.

5.6 Option code

The option code is built up with 8 bits. The following tableexplains which option influences which bit.

Table 5-1

Fig. 5.2

TV-system (bit 7 and bit 6)

00 = single PAL 01 = PAL I 10 = not used 11 = MULTI-F

example: option code F4 (hexadecimal presented) means a fullmulti set non system with teletext, clock and internal radio. F4is in binary 1111 0100.

5.7 Error messages

The microcomputer also detects errors in circuits connected tothe I2C (Inter IC) bus. These error messages arecommunicated via OSD (On Screen Display) and a flashingLED in the service default-alignment mode. (error code historybuffer):

1. In normal operation. In normal operation no errors areindicated.

2. In the service default-alignment mode. In the servicedefault-alignment mode both the "OSD error code" and the"LED error" indication will display the present detectederror twice.

BIT Description

0(LSB) Not used1 interface system 0=non system

1=system

2 Radio interna 1=radio present

3 not uset

4 Clock 1=clock present

5 Teletext 1=txt present

6 TV-System

7(MSB) TV-System

"OSD error number"(service menu)

"LED behaviour" Error description Possible defective component

0 no led blinking no error

1 LED blinks once general I2C bus

2 LED blinks two times Eeprom error IC 7685

3 LED blinks three times TXT-error IC 7700 / 7990 / wrong option.

4 LED blinks four times PLL-tuner error Item 1001 / wrong option

5 LED blinks five times radio-module error IC 7904 / item 1910 / wrong option.

6 LED blinks six times display error IC 7951.Fig. 5.3

5 Fault finding tree & Repair facilities10 A7H.15.8 Hotel mode

5.8.1 Hotel-mode "on"

To enter to hotel mode a setting must be changed in theinstallation menu.

5.8.2 Function of the hotel mode

volume cannot be increased above the maximum levelinstalled.

store open/close is ignored, message "LOCKED" is shown. local keys are blocked. If the blocking option is set, a

message "LOCKED" is shown when a local key is pressed. all protected programs cannot be selected. To free

protected programmes the remote control key "PIP on/off"must be pressed or the relevant menu item must bechanged. This key works as a toggle function.

5.8.3 Hotel-mode "off"

To leave to hotel mode a setting must be changed in theinstallation menu. Same setting as in hotel-mode "on"

8 Electrical adjustments 25A7H.18 Electrical adjustments8.1 Adjustments on the main panel (Fig. 8.1)

8.1.1 Horizontal centring

Is adjusted with potentiometer R3354.

8.1.2 Picture height

Is adjusted with potentiometer R3407.

8.1.3 Focusing

Is adjusted with the focusing potentiometer in the line outputtransformer.

8.1.4 IF filter (only for sets with SECAM LL' reception possibility)

Connect a signal generator (e.g. PM5326) via a capacitor of5p6 to pin 17 of the tuner and adjust the frequency for 40.4MHz.

Connect an oscilloscope to pin 1 of filter 1015.

Switch on the set and select system Europe (BG/L is "low" forBGIDK reception).

Adjust L5012 for a minimum amplitude.

8.1.5 AFC

1. For sets with SECAM LL' reception possibility:1. Connect a signal generator (e.g. PM5326) as indicated

in point 1.6. Connect a voltmeter to pin 44 of IC7015/6A.

2. Adjust the frequency for 33.9 MHz and select systemFrance (L/L' is "high" for L' reception).

3. Adjust L5040 for 3V5 (DC).4. Next adjust the frequency for 38.9 MHz and select

system Europe (L/L' is "low" for BGILDK reception).Adjust L5043 for 3V5 (DC).

2. For sets without SECAM LL' reception possibility: Connect a signal generator (e.g. PM5326) as indicated

above and adjust the frequency for 38.9 MHz (for PALI at 39.5 MHz). Connect a voltmeter to pin 44 ofIC7015/6A.

Adjust L5040 for 3V5 (DC).

8.1.6 RF AGC

If the picture of a strong local transmitter is reproduceddistorted,

adjust potentiometer R3021 until the picture is undistorted.Or:

Connect a pattern generator (e.g. PM5518) to the aerialinput with RF signal amplitude = 1 mV. Connect amultimeter (DC) at pin 5 of tuner.

Adjust R3021 so that voltage at pin 5 of tuner is 7V5 0V5(DC).

8.2 Adjustments on the CRT panel (Fig. 8.1)

8.2.1 Vg2 cut-off points of picture tube

Apply a pattern generator (e.g PM5518) and set it to awhite raster pattern.

Adjust contrast and Vg2 at minimum (Vg2 withpotentiometer in line output transformer to the left).

Adjust brightness until the DC voltage acrosspotentiometer 3320 is 0V

Adjust R3346 (B), R3330 (G) and R3310 (R) for a level of115V on the collectors of transistors 7350, 7318 and 7330

Adjust Vg2 potentiometer until the light from the gun thatfirst emits light is just no longer visible. Adjust the two otherguns with the respective controls (3346, 3330 or 3310 untiljust no light will be visible

8.2.2 Grey scale (white D)

Apply a grey scale and adjust the set for normal operation.Allow the set to warm up for about 10 minutes.

Adjust R3300 and R3320 until the desired grey scale hasbeen obtained.

Figure 8-1CL 76532054_001.AI

181097

FOCUS3407

7700

TXT

20

1 40

21

SDAMMODE

7015

VI

DEO

PRO

C

52 AFC

5012 5040

27 26

1

TV

AGC

IF

5043

AFC

17

5

TUNE

R

2021 1

2

54

81

S1

S2

EEPR

OM

21

1 42

2276

00

C21

1 42

22

7685

TV

3021

3354

HOTGROUND

45678

91011

3300 3320 3330 3346 3310

R B G B RWhite Cut-off

LOT

(upper)SCREEN(lower)

Main Chassis (Component Side)

CRT Panel(Track Side)

9 Circuit description26 A7H.19 Circuit description9.1 Description of the power supply and the deflection

part.

In this chassis all power circuits are mounted on the maincarrier panel.

The power supply can be divided into 2 parts:

External power supply (not switched off by power switch) Main power supply (switched off by power switch).

External power supply (with transformer item 5502). Main power supply (with transformer item 5500) and

deflection.

Warning: For this power supply is valid that the +96V supply forthe line output stage is not mains isolated. And therefore theline output stage and horizontal deflection coil connections onthe CRT are also not mains isolated. Reason: With this supplysingle isolated picture tubes can be used.

For a description of the main power supply and belongingdeflection circuit see below.

Figure 9-1

1. Principle of the down-converter (Fig 9.1): The main power-supply is a self-oscillating down converter with an auxiliarywinding to help the FET TS7504 to switch. When switchTS7504 is closed, the voltage on L2-3 is Vin-Vout. Duringthis time, energy is stored in the coil and energy isdelivered to the load. When switch TS7504 opens, theenergy stored in the coil will be stored in the outputcapacitor (C2515). This is due to the fact that the currentthrough the coil has to decrease linear. When the switch isopen the current is floating through D6504, L2-3 andC2515. By controlling the duty-cycle of the switch, theoutput voltage can be regulated.

2. Start-up (see diagram A1): When the switch TS7504 isclosed, the input voltage is placed over winding 2-3 oftransformer 5500, which acts as coil L2-3 in Fig 8.1. Viaresistors R3513,R3518 and R3512 the switch is turned onfor the first time. Zener diode D6502 prevents that the Ugsof the FET becomes higher than 15V. When the inputvoltage is on winding 2-3, there is also a voltage on winding1-2. Via winding 1-2 the correct switching voltage isobtained. The DC-part of this voltage is blocked bycapacitor C2503. Diode D6510 acts as a protection in start-up and in short-circuit situations. During start-up the outputcapacitor C2515 is empty. It takes a relative long time tocharge the gate to a voltage high enough to switch on theFET. This is due to the fact the diode D6510 is conducting.When this diode is conducting, the current that wouldnormally flow into the gate of the fet to switch on the FET,

T-on; In this state the FET is conducting and energy isstored in the coil and in the output capacitor.

T-off; In this state the fet is non conducting and theenergy stored in the coil is fed to the output capacitor.

T-dead; Fet is out of conduction and there is no energyin the coil.

4. T-on; In the T-on state, switch TS7504 is switched on.When the switch is on the voltage over resistors R3514-R3515 is a direct measure for the current through winding2-3. This is a negative voltage. When this voltage becomesbelow a certain level, TS7501 starts conducting and willswitch off the fet. In this way it is prevented that the coil cango into saturation. This could be the case when the outputvoltage is very low. (long on time of the FET). When theoutput-voltage becomes too high during T-on the FET willbe switched off. (see Output-voltage regulation)T-off; Due to the stored energy a current will start to flowthrough D6504, C2515 and winding 2-3. Due to the factthat the current is flowing through this circuit, a voltage withreverse polarity is on winding 1-2. In this way the fetremains off until the current through winding 2-3 reacheszero. Now a new cycle will start. The fet will be switched onand all starts over again.T-dead; If the output voltage is too high (for example in alow load situation) the FET remains off till the output-voltage is not to high anymore.

5. Output voltage regulation: This is done by the circuitD6501, R3509, TS7502, R3505, R3507, R3510. TransistorTS7502 can only conduct when the voltage on the base is0V7 lower than the voltage the voltage on the emitter. Thismeans that the voltage drop over resistors R3505 andR3507 should be 5V6(zenerdiode) + 0V7(base-emitter).This is reached when the output voltage exceeds the 100V.Now transistor TS7502 starts conducting, which bringstransistor TS7501 in conduction. As a consequence thegate voltage of the fet becomes very low and the fet stopsconducting. As long as the output voltage is too high the fetstays out of conduction.

Figure 9-2

9.2 Protections:

There are the following protections in this chassis:

1. Overvoltage protection: A disadvantage of a downconverter is that if the switch becomes a short-circuit, theoutput voltage will increase to the input voltage. This coulddamage circuits. In this power-supply there is a protectionto prevent this. If the output voltage becomes higher than130V, zener diode D6514 starts to conduct. The Vin will beshort circuited. This will blown the main fuse 1501 and

Vin Vout

TS 7504

D 6504 C 2515

Down-converter

L2-3

CL 66532015_013.AI150296

Icoil

Ton

CL 66532015_014.AI260296

Toff Tdeadis now flowing into C2515. In this way a smooth start-up isguaranteed.

3. General way of working (Fig 9.2): The state of the power-supply can be divided into three areas (see Fig. 9.2):

protect in this way all the other circuits.2. Short-circuit and start-up protection: The short-circuit

protection works the same as the start-up protection. If theoutput-voltage is very low in case of a start-up or a short-

9 Circuit description 27A7H.1circuit condition, The gate will be charged very slowly dueto the fact that zenerdiode D6510 is conducting. So thecurrent is not only charging the gate but is also flowing intothe output capacitor. In this way it takes a few millisecondsto switch on the fet. Diode D6510 takes also care that thefet never remains in his power consuming (linear) area. Ifthe output voltage is very low, it also takes a large timebefore the current through winding 2-3 reaches zero. Thepower supplied to the circuit is in this way very low andprotects in this way the circuit.

3. Other output voltages: The output voltages +8Sb,+14V+9S and +5S and +5G are made by winding 5-6. During thetime that the fet TS7504 is not conducting, energy istransformed to this winding (flyback principle) and thevoltages mentioned above are created. From the +9S, the+5S voltage is derived. This voltage is stabilized bytransistors TS7505, TS7500 and zenerdiode D6500.D6500 is the reference voltage and TS7505 is deliveringthe current. When zenerdiode D6500 starts conducting,the voltage over resistor R3502 becomes high and a PORsignal is created.

9.3 Degaussing:

R3516 is a dual PTC (2 PTC's in one housing). After switching"on" the set, the PTC is cold, so low ohmic. This makes thedegaussing current high. After degaussing the PTC is heated,so high ohmic. This makes the degaussing current low. Afterdegaussing the PTC remains heated by the mains.

9.4 Line-circuit (Schematic A3):

The primary side of the line-circuit and the deflection coil areconnected to the hot earth. The driver-circuit contains an opto-coupler to create isolation between the low-signal parts and themains. The optocoupler is driven by pin 37 of IC7015-6E viatransistor TS7103. When TS7103 is not conducting,(the LED ofthe optocoupler is also out of conduction) TS7421 is also notconducting. In this way TS7422 will conduct and the 96V isplaced over winding 2-1 of the LOT. A voltage over winding 2-1 of the LOT will cause a voltage over the windings 8-10, 6-10and 9-10. Now energy will be transformed from the primary tothe secondary-side and charge capacitors C2424 and C2425.

C2430 will be charged to the difference of the +40D and +14D(=26V) when TS7422 is conducting. When TS7422 stopsconducting, the voltage of pin 8 of the LOT will become verynegative. This forces C2430 to be charged to 26V plus theabsolute value of pin 8. When TS7422 starts conducting againthe voltage of pin 8 of the LOT will increase and so the voltageon the anode of D6422. In this way the 160V is created. Thismeans that during the off-time of TS7422, C2430 is chargedand during the on-time of TS7422, the energy in C2430 is givento C2426.

When transistor TS7103 conducts, the LED of the opto-couplerwill be activated. This causes the transistor of the opto-couplerto conduct, which drives TS7421 in conduction. This bringsTS7422 out of conduction. Due to this construction, this circuitis protected against missing line-drive pulses. When a line-drive pulse is missed, the line-transistor stays out ofconduction, due to the fact that the diode of the opto-coupler isforced into conduction by TS7103. In this way nothing can bedamaged when there is no line-drive.

Winding 4-3 is an extra winding to help TS7422 to switch. On

Stand-by: The standby signal from the uC is low in case ofstand-by. Now TS7103 is brought into conduction by R3112.As mentioned before this will switch off the line-output stagecompletely.

9.5 Control (see schematic A5)

TMP87C-434N (all pins described from top left corner anti-clock-wise)

+5 (pin 42) and Power On Reset (POR) (pin 33); The +5 supplyof the microcomputer (uC) is on pin 42. Via the POR on pin 33the uC will not initialize before C2682 on pin 33 is charged to+5V (see description power supply). The initialisation will takeplace and the uC will start up.

LED (pin 20); The LED on pin 20 will be red with "high" intensityin stand-by mode, red with "low" intensity in normal operationand will flash during RC5 reception or error messages.

In normal operation pin 20 is "high" so the current from +5Awill go via R3650 to earth giving a "low" intensity

In stand-by mode pin 20 will be "low" so the current from+5A will go directly to earth via pin 20 giving a "high"intensity.

RC5 (pin 35); The commands transmitted by the RC arereceived by the infrared receiver 1685 and applied to pin 35 ofthe uC.

Sharpness control (pin 6); DC control signal (2V5-5V) forsharpness control of IC7015-6B .

External 2 (SVHS) (pin 8); Switching signal; "high" for SVHSmode, "low" for non-SVHS mode

Operating keys (pins 10-11-12); There are 3 operating keysconnected to pins 10-11-12. The status of the pins is checkedevery 16 msec. When pressing a key the level of a pin is pulled"low" which will be translated to the required command by theuC.

AGC threshold (pin 13); DC input signal from the IF-detectorIC7015-6B to the uC which reads the value of the AGC control.This input pin is only used by the factory during production fora timely increase of the tuning speed. Outside the factory thispin will not be used any more.

Smart Loader -Enable (pin 9); Switching signal used forswitching the Smart Loaader "high" and "low".

System switching voltages L/L' - BG/L - BG/I (pins 36-37-38);Pins 36, 37 and 38 are used for system switching in the soundand video decoding part. The signals on pins 36, 37 and 38 areinverted and set to the correct level by TS7672 and TS7654respectively. By then they are called the switching signals L/L',BG/L and BG/I (see table).

The uC makes BG/L "low" in case EUROPE or UK is selected,and "high" in case FRANCE is selected. The uC makes BG/I"low" in case UK is selected, and "high" in case EUROPE orFRANCE is selected.

In case FRANCE is selected and the tuning is in the lower partof the VHF1 band, the uC makes L/L' "high". In case FRANCEis selected and the tuning is in the upper VHF1 or VHF3 or UHFband, the uC makes L/L' "low". Also in case EUROPE and UKthe secondary-side of the LOT there is a circuit consisting ofTS7423, R3422, R3433, R3434, C2431 and C2432. This circuitcreates a pulse when TS7422 switches off. This pulse indicatesthat horizontal flyback takes place. This information is fed toIC7015-6E to blank the picture.

is selected the uC. makes L/L' "low".

On Screen Display (OSD) (pins 27-26-23-29-28-25); Using theOSD generator, informa-tion is displayed on the screen aboutthe tuned band, the position in the tuning range (tuning bar),

9 Circuit description28 A7H.1system selected, sleep timer, programme number and the vari-ous picture and sound setting adjustments.

In order to synchronise the OSD information with the pic-turesignal, the SANDCASTLE signal is used. From this horizontalflyback a vertical flyback pulse is derived via C2662 and C2663and inverted fed to pin 27. The SANDCASTLE signal is fed topin 26. The OSD generator is controlled by C2677, C2678 andL5677. The OSD FAST BLANK-ING signal is available on pin25. The OSD-G signal is present on pin 23.

4.194 MHz oscillator (pin 31-32); The frequency of the oscil-lator (4.194 MHz) of the uC is determined by the crystal acrosspins 31 and 32.

SERVICE and uP INT/EXT (pin 7); If during mains switch "on"pin 7 is shorted to earth, the Service Default Mode is activated(see chapter 8). Pin 7 is also used for internal or external audioand video switching ("low" for internal, and "high" for external).This uP INT/EXT signal together with pin 8 of the scart makesthe switching signal STATUS (see diagram C).

EEPROM memory and I2C (pins 39-40); The uC is connectedto a non-volatile memory IC7685 (2k-bit EEPROM) via the I2Cbus. The PP and programme data are stored in this memory.The system has a facility to store 69 preferred programmes(can be reduced to 39 via options) together with their tuning,band voltage and system data (the uC itself has 16k ROMinternal for its software program).

Stand-by (pin 19); The STANDBY switching signal is presenton pin 19 of the uC. In case the status signal STANDBY is"low", the power supply will be switched into stand-by mode.

Picture and sound settings (pins 2-3-4-5); There are 4 analogsettings available: volume (pin 2), bright-ness (pin 3),saturation (pin 4) and contrast (pin 5). The RC networks areused to make a DC voltage level from the pulse widthmodulated output signal.

A certain adjustment of these settings can be preprogrammedin the EEPROM memory as personal preference for allprogrammes at once (PP). Sound suppression (mute) takesplace internally in the uC during the automatic transmittersearch or when the received signal is interrupted (detected viathe IDENT signal on pin 16).

Tuning (pins 16-17-18-41-14-1); both a VST or a PLL tuner canbe applied:

For VST the tuning to a transmitter in the tuner isperformed via a linear variation of the tuning voltage V-vari.This tuning voltage on pin 1 of the uC (0V2 to 5V) is set tothe correct level (V-vari varies between 0V and 33V) byTS7605 and the +100V from the power supply (this +100Vis taken to a stabilised 33V by R3601, R3602 and D6602).The AFC (Automatic Frequency Control) signal from the IF-detector is added to the tuning voltage V-vari via R3612 tocompensate tuner drift. During transmitter search pin 41 ismade "high" by the uC, as a result the AFC voltage will notbe added to the V-vari.If during the transmitter search an IDENT signal (from theIF-detector) is received on pin 16, the uC will checkwhether the tuning is correct (micro search) and whetherthe AFC can be switched on again via the input pin 14.For bandswitching of the 2 to 3 decoder IC7702 twoswitching voltages on pin 17 and 18 are used.

For PLL the tuning is performed via the I2C (the V-vari also

whether the tuning is correct (micro search) and whetherthe AFC can be switched on again via the input pin 14.

Pin 1 and pin 41 of the uC and the bandswitch IC7702 are notused for PLL.

9.6 Deflection :

9.6.1 Horizontal deflection:

The voltage over capacitor C2422 is the same as the voltageover C2515 (96V, see Diagram A1). When TS7422 isconducting this voltage is placed over the horizontal deflectioncoil. This causes a linear increasing current through this coil. Inthis way deflection is created. When TS7422 switches offlyback takes place and it starts all over again. L5424 is usedfor linearity correction.

9.6.2 Vertical deflection:

Vertical deflection is based on a balance amplifier. Or TS7401or TS7402 is conducting. This depends on the signal V-drive. IfV-drive is high TS7401 conducts and the voltage of C2401 isplaced over the deflection coil. Now the picture is written. WhenV-drive is low, TS7402 conducts and the +40V supply voltageminus the voltage over C2401 is placed over the deflection coil.Flyback takes now place. In this way deflection is generated.

R3407 is used to adjust the vertical shift. With this resistor thelevel of the signal VFB is adjusted. R3402 and C2404 are usedto damp oscillation of the deflection coil with his parasiticcapacitance.

The signal NIL from the uC is used to create a non-interlacedmode. This is done by creating a small DC current through thedeflection coil.

9.7 Description of diagram A7

9.7.1 General:

IC7015 (TDA836X) is a single-chip video processor with built inIF-detector, luminance and chrominance separator, PALchroma deco-der, video controller, horizontal & vertical sync.proces-sor and FM sound-decoder. IC7015 has 3 possibleexecutions:

TDA8360 is for PAL-only sets without external switch (noscart + cinches)

TDA8361 is for PAL-only sets with external switch (withscart + cinches)

TDA8362 is for PAL/SECAM multi sets with external switch(with scart + cinches)

9.7.2 Chrominance decoding IC7015-6C (and IC7250)

Chrominance signal originates from IC7015-6B (see diagramA6) and internally applied to the PAL chroma decoder IC7015-6C. For SECAM chroma decoding IC7250 is used whichobtains its chroma signal via pin 27 IC7015-6C (see pin 27description). The PAL chroma signal is fed via a pre-amplifi-erand a burst demodulator to the PAL R-Y and B-Y demodulator(all in IC7015-6C). The 4.43 MHz reference crystal for lockingthe chrominance oscillator of both chrominance decodersIC7015-6C and IC7250 is present on pin 35 of IC7015-6C.varies between 0 and 33V, but by now is only internallydetermined by the tuner).If during the transmitter search an IDENT signal (from theIF-detector) is received on pin 16, the uC will check

Pin 27 has 2 functions; PAL only mode or PAL/SECAM mode(DC controlled) and chroma output for feeding the chroma-signal to the SECAM chroma decoder IC7250:

9 Circuit description 29A7H.1 For PAL/SECAM sets pin 27 should be > 5V5 (via R3243)

to put IC7015-6C in the PAL/SECAM mode; by thenIC7015-6C is in PAL decoding mode and via pin 27 feedsthrough the chroma signal to the SECAM chroma decoderIC7250 (so IC7015-6C searches for PAL and IC7250searches for SECAM).

For PAL only sets pin 27 should be < 5V5 (via jumpers4201 and 4202) to put IC7015-6C in the PAL-only mode.

Bidirectional com-munication line between pin 32 of IC7015-6Cand pin 1 of IC7250 both IC7015-6C and IC7250 "know"whether a PAL or a SECAM signal is detected:

On AC level there is a 4.43 MHz calibration signal forcalibration of the PLL and chroma cloche filter of IC-7250.

On DC level there is a PAL/SECAM switching line enablingautomatic selection of IC7015-6C or IC7250 to supply R-Yand B-Y to the delay line IC7271. If IC7015-6C has detected a PAL signal, pin 32

IC7015-6C becomes 1V5 (test point V7 is 1V5 DC). Bythen the demodulated R-Y and B-Y will be fed to theoutput pins 30 and 31 of IC-7015-6C and so to thedelay line IC7271.

If IC7015-6C has not detected a PAL signal, pin 32IC7015-6C becomes 5V (test point V7 is 5V DC). Bythen the demodulated R-Y and B-Y will not be fed tothe output pins 30 and 31 of IC7015-6C.

If IC7250 has detected a SECAM signal pin 1 IC7250becomes "low" (test point V7 is 3V5 DC). This "low" pin1 IC7250 sinks a typical 150 A from the high (5V) pin32 IC-7015--6C via R3291. Only in case the currentsinked from pin 32 IC7015-6C to pin 1 IC7250 is typical150 A, only by then IC7015-6C "knows" that IC7250has detected a SECAM signal. The SECAMdemodulated R-Y and B-Y are fed to the delay lineIC7271 via output pins 9 and 10 of IC7250.

SECAM VCR identifier panel; this panel is only used in sets forSECAM LL" and SECAM DK and is used to force IC7015-6C inSECAM mode (so select IC7250) at playback of a SECAMVCR tape.

In PAL mode test point V7 1V5 DC, in SECAM mode testpoint V7 is 3V5 DC; For both these modes TS7263conduct, TS7262 does not conduct. In case TS7262 doesnot conduct the PLL frequency is determined by C2261and C2264 only.

In case of no correct SECAM decodification (e.g. black andwhite signal or SECAM VCR playback), test point V7 is 0V7DC; TS7263 does not conduct and so TS7262 conduct.The time constant of the PLL filter is shifted as by nowC2262 is switched in parallel to C2261-2264. In this wayIC7015-6C is forced in the SECAM mode.

9.7.3 Video controller IC7015-6D

RGB-dematrixing dematrixes the -(R-Y), -(B-Y) and the Y sig-nals to RGB signals; the sandcastle pulse coming internallyfrom IC7015-6E synchronises the RGB dematrixing and sup-presses the RGB signals during line and frame flyback. Analogcontrols by the uC for contrast (0-4V5), brightness (0-5V) andsatura-tion (0-2V5).

Fast blanking and RGB-source select; Via the FASTBLANKING signal on pin 21 of IC7015-6D both the fastblanking and the RGB source select is realised:

OSD FAST BL from the OSD generator; this signal is "high"

switch into external mode for displaying RGB from scart(via pins 22, 23 and 24 IC7015-6D)

F. BL. TXT fast blanking signal from teletext; this signal is"high" (> 1V) to switch the RGB source select switch intoexternal mode to display teletext (via pins 22, 23 and 24IC7015-6D).

BCI; If the beam current increases, the BCI-signal (BeamCurrent Info) decreases. If beam current is too high theCONTRAST is pulled down to reduce contrast.

9.8 CRT panel (Schematic B1)

RGB amplification by TS7300,TS7310 - TS7320,TS7330 -TS7340,TS7350 respectively. Cut off point adjustment foradjusting the R, G and B guns to start and stop emitting at thesame correct level. Via R3310, R3330 and R3346 the DC levelof the collec-tors TS7350, 7230 and 7310 and so the DC levelof the guns are adjusted.

White D adjustment for adjusting the correct balance betweenR, G and B signal.

Via R3310 and R3320 the amplitude of R and B signal canbe adjusted to the amplitude of GThe base DC-voltage of the RGB-ampli-fiers is equal to theblack level of the RGB signals

Picture tube flash protection:Spark gaps in the PWB of the picture tube panel (built-in inthe picture tube holder)

Resistors in series with the RGB electrodes 3315, 3335and 3355 limiting the current through the guns

Diodes 6314, 6334 and 6354 conduct at flashover and sodo not allow a higher voltage at the guns as approx. 160V

Peak beam current limiter; If the beam current is too high, thecurrent though resp. R3314, 3334 and 3339 is high. The diodes6310, 6330 and 6350 conduct and so TS7205, 7218 and 7227can not supply more current to the guns and so the beamcurrent is limited.

9.9 Sound processing (See schematic A7).

Two sound paths can be determined:

For BG, I and DK systems FM modulated intercarriersound (sound extracted from baseband CVBS from IFdetector)

For LL' systems AM modulated quasi-split sound (soundextracted directly from the tuner).FM demodulation; For FM modulated sound the soundsignal is filtered through filter 1135 or 1136 from thebaseband CVBS signal.

For BGILL' sets the switching signal BG/I is used to selectthe correct crystals: For BG reception BG/I is "high":

sound path via 1135 (5.5 MHz) is selected asD6171 conducts

sound path via 1136 (6.0 MHz) is blocked asTS7170 conducts and so D6170 does not conduct

For I reception BG/I is "low": sound path via 1135 (5.5 MHz) is blocked as

D6171 does not conduct sound path via 1136 (6.0 MHz) is selected as

TS7170 does not con-duct and so D6170 conduct(> 1V) to insert the OSD characters (green or red OSDdepending on the version).

F. BL. SCART fast blanking signal from pin 16 of the scart;this signal is "high" (> 1V) to switch the RGB source select

For PAL BG or PAL I only sets only 1135 is used (resp 5.5 MHzor 6.0 MHz).

9 Circuit description30 A7H.1For PAL BG / SECAM DK sets the 5.5 MHz (1135) and 6.5 MHz(1136) are both used in parallel (no switching possibility).

FM-mono sound demodulation IC7015-6F FM mono sounddemodulation takes place in IC7015-6F. No ad-just-ment isrequired for BG or I demodulation as automatic PLL tuning (4.2to 6.8 MHz).

Pin 1 of IC7015-6F is used as:

Input for defining the sound frequency characteristic by de-emphasis C2112

Input for positive / negative switching of IC7015 (AFC andAGC) via the status signal BG/L from Y/C

Output for feeding the FM demodulated sound to IC7140source select.

Source select between FM sound or AM / AUDIO IN sound (pin6 IC7015-6F) is done via pin 16 IC7015-6B (diagram A6).

AM demodulation; Via the double bandpass characteristic ofSAW-filter 1101 the required fre-quency spectrum is fed to theAM demodulator IC7125. The double characteristic isnecessary because for the L system the sound is at 32.4 MHzand for L' at 40.4 MHz controlled by switching signal L/L'.

For AM sound system L' the SAW filter 1101 should passesthough 40.4 MHz. For L' reception L/L' is "high", so TS7126conduct: sound path via input pin 2 of 1101 is blocked as D6116

blocks sound path via input pin 1 of 1101 is selected; as

TS7126 conducts TS7127 does not conduct, pin 11101 is "high", so D6115 conducts

For AM sound system L the SAW filter should passesthough 32.4 MHz. For L reception L/L' is "low", so TS7126does not conduct: sound path via input pin 2 of 1101 is selected as D6116

conducts sound path via input pin 1 of 1101 is blocked; as

TS7126 blocks TS7127 conducts, pin 1 1101 is "low",so D6115 not conduct

The demodulated signal on pin 6 of IC7125 is supplied to thesource selection switch in IC7140 via TS7142 (TS7142 onlyconducts if the IDENT_MUTE AM signal is "high" so CVBSdetected). C2126 and 2127 are AGC related storagecapacitors.

9.10 Source selection IC7140

STATUS is "high" for internal and "low" for external mode. BG/L is "low" for FM sound (BGIDK) and "high" for AM sound (LL').

Top switch in IC7140 selects between AM sound (pin 5)and AUDIO in from SCART + audio cinch (pin 3) controlledby pin 9. Pin 9 is controlled by the inverted STATUS signal(TS7141), so "low" for internal AM-sound and "high" forexternal SCART + AV sound. D6141 and R3144 are usedto keep the IDENT.VCR status signal "high" in externalmode as otherwise the TV would switch "off" after 15minutes (normally if 15 minutes no IDENT then the uC willswitch off the set). The output of this selector (pin 4IC7150) is fed to input pin 6 of the FM-demodulatorIC7015-6F. Here selection is made between FM sound and"pin 6 AM or EXT sound" by pin 16 IC7015-6B (INT/EXT-

Bottom switch in IC7140 selects CVBS-INT (pin 12) orCVBS-EXT (pin 13) by the same control voltage as on pin9 IC7140 ("low" for internal and "high" for external). Theoutput signal on pin 14 will be fed to the teletext decoder.

Amplification and volume control IC7157; IC7157 (TDA7056A)amplifies the LF audio signal to nominal 3W output between pin6 (+ signal) and pin 8 (- signal). Volume control on pin 5 ofIC7120 varies between 0V4 and 1V5.

Anti switch-off plop; When the set is switched "on" C2157 willbe charged to approx. +12V via R3157 and D6113. When theset is switched "off", the +12B drops very fast. As a result theanode of D6112 also decreases very fast up to approx. -13V(C2157 tries to hold its voltage); volume control signal on pin 5IC7157 is pulled down too via zener D6112, so no sound plopcan be heard at switch "off" (D6110 prevents the VOLUMEcontrol signal becoming negative).

9.11 TXT (schematic A9):

For teletext there are two possibilities:

Teletext on board of the main-chassis (1 page only). Teletext on the system card.

OPTIONAL!

In sets with a system card there is an additional panel present(schematic G). This extra panel is present due to the fact thatsending TXT-information from systemcard to the teletext-decoder takes too much time (Too much time of the I2C-bus ).The uP of the main-chassis is the master of the I2C-bus. Toovercome the problem that the system card, whichcommunicates with the teletext-decoder over the I2C-bus,uses too much time of the bus, the mP of the system card andthe teletext decoder are released from the bus.

See the picture 9.3:

To release the system card from the bus of the set, the REL-BUS signal comming from pin 41 of IC7600 is used. This signalis used as an input of IC7990 of the FAST TEST panel.

9.12 Smart loader panel (schematic A6a):

The smartloader is an adapter which can be used to programthe settings of a set. Once a set is programmed, thisinformation can be stored in the smart-loader. Now the smart-loader is ready to program all the other sets. If information froma set is written in the smart-loader, the information in the smart-loader is checked if the transfer of the data happend correctly.This is done to prevent that all the other sets are programmedwrongly.

The smart-loader panel is an analog switch (IC7930) toconnect the signals SCL, SDA ,GND and +5V to the smart-loader. This switch is controlled by pin9 of IC7600 (uC).

9.13 The clock panel (schematic E1):

The clock-panel is fully controlled by the I2C-bus. The four 7-segment digits are driven multiplexed two by two. The MX1 andthe MX2 signal are used to select the correct display. If MX1 ishigh then TS7954 and TS7955 are conducting. Display 7957and display 7959 are now supplied. The information, to display,signal).

Middle switch in IC7140 selects between AM (pin 1) andFM sound (pin 2) for the AUDIO OUT signal which is usedfor the SCART + AV sound output. This switch is controlledby pin 10 (BG/L is "high" for AM pin 1, "low" for FM pin 2).

are on P1..P7 and on P9..P15 of IC7951. If MX2 is high thenthe other two displays are selected. MX1 and MX2 are neverhigh at the same time. P8 of IC7951 is used to activate the leds

9 Circuit description 31A7H.1alarm and message. P16 of IC7951 is used to activate decimalpoint.

IC7951 is supplied by +5V on Pin13.

9.14 The radio module (schematic E2): IF PRESENT !!

The radio-tuner is fully controlled by the I2C-bus. The input isat the antenna plug and the low frequency outputs are at pin 5

and pin 6. These outputs are added by R3904 and R3905 tocreate a mono signal. This signal is fed to pin 2 of IC7901. Atpin 2 of these IC is the audio signal of the tv-signal. With thesignal SEL-RADIO it is possible to select the sound of the TVor of the radio-tuner. If SEL-RADIO is "high" then transistorTS7902 is conducting. Pin 10 of IC7901 becomes "low" and theradio-signal is selected.

Figure 9-3

UC-TV

Tuner

EEPROM

UCsystem

card

TXTon system

card

SDA

SCL

IC 7600

1001

IC 7990

IC 7685 7700 orTXT on system

cardCL 66532013_015.AI

280296

REL-BUS

Signals Connectors TV-side

pin SmartconnectorSM1 systemside

Electrical specification

SCL_DCM FSE1 1 1 Clock signal: See I2C specification

SDA_DCM FSE1 3 2 Data signal: See I2C specification

GND_I2C FSE1 2 3 Ground I2C

GND PS1 4 4 Ground Power

+12E PS1 5 5 +12Vdc+/- 5% ripple < %. Iomax = 100mA

+5E PS1 6 6 +5Vdc +/- 5% ripple < 2%. Iomax = 600mA

Audio_Alarm MR1 single pin 7 Audio input low frequency. Vin< 500mV rms. Input imp > 10K

POR PS1 7 8 Reset signal from TV to DCM micro controller. Low (0V) =active; High (5V) = Not active.

Status MS12 single pin 9 Active = 0 V. Disactive = 12V.

9 Circuit description32 A7H.1

DISPL

AY/CL

OCK

MAIN

CHAS

SIS101

0

SECO

ND LS

+5E

1(

SCL

2(SD

A 3

() 1

GND

) 2 S

DA) 3

SCL

GND

4(

) 4 +5

E

SOUN

D-OUT

1 1(

SOUN

D-OUT

2 2(

) 1 S

OUND-

OUT 1

) 2 S

OUND-

OUT 2

SCL

1(GN

D-12C

2(

SDA

3(

+5V

4(

1( 2( 3(GN

D

4(

RESE

T

7(+5

V

6(

+12A

5(

AUDIO

-ALAR

M

3( STA

TUS

4

(

) 1SC

L) 2

SDA

) 3GN

D-12C

) 4GN

D) 5

+12E

) 6+5

E) 7

AUDIO

-ALAR

M) 8

RESE

T) 9

STAT

US) 10

NC) 11

NC) 12

NC) 13

NC) 14

NC) 15

NC) 16

NC) 17

NC) 18

NC) 19

NC) 20

NC

SMART LOADER

+5V

1(

SCL

2(SD

A 3

(GN

D 4

(

SCL-S

L 7(

SDA-S

L 6(

SL-EN

5(

+5SL

8(

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

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SCART PLUG

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MS1Figure 9-4

10 Directions for use. 33A7H.110 Directions for use.

10 Directions for use.34 A7H.1

10 Directions for use. 35A7H.1

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STYLING 198.AI280598

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11 List of Abbreviations36 A7H.111 List of Abbreviations+183V (+163V) +183V/163V supply voltage from the LOT to

the picture tube panel+29V +29V supply voltage from the LOT to the frame

amplifier IC7400+12E +12V supply voltage from the extra power

supply to radio-module+12S +12V supply voltage from the SMPS to the

sound output amplifier and the line drivecircuitry

+8A +8V supply voltage from the SMPS for thewhole small signal part

+8L +8V supply voltage from the LOT to the supplyvoltages +5C and +5D for teletext processing

+5A +5V supply voltage from the SMPS to the mCand periphery.

+5C +5V supply voltage from +8L to teletextprocessing

+5D +5V supply voltage from +8L to teletextprocessing

+5E +5V supply voltage from the extra powersupply to the clock

+5F +5V supply voltage from +8L to teletextprocessing

+5G +5V supply voltage from the SMPS for the LEDand the keyboard

mC Microcomputer16/9 Switching signal from the mC to the frame

amplifier used for switching the frame outputstage in 16/9 mode; "high" for 4/3, "low" for 16/9

AFC Automatic Frequency ControlAGC THR DC input signal from the IF-detector IC7015-

6B to the mC which gives the value of the AGCcontrol (only used by the factory to timelyincrease the tuning speed)

AGC Automatic Gain ControlAM SOUND/AUDIOIN AM demodulated sound signal or AUDIO-IN

signal from scart or audio cinch; this signal isfed to IC7015-6F for source select

AQUA Aquadag on the rear side of the picture tube topin 8 of the LOT

ATS Automatic Table Setting (auto install systemfor Germany only)

AUDIO-IN Incoming audio signal from pin 2 and 6 fromscart or the audio cinch. Both signals go tosource select IC7140

AUDIO-OUT Outgoing audio signal from pin 15 IC7140 topin 1 and 3 from scart

AV+C AV switching signal (0V aerial, 4V SVHS, 8Vscart) with chrominance part of the SVHSsignal (C) superimposed on it.

B-SCART Blue input signal from the scart to the videocontroller IC7015-6D

B-TXT Blue input signal from the teletext decoder tothe video controller IC7015-6D

BAND-1 Switching signal from mC for bandswitching tothe 2 to 3 decoder IC7002

BAND-2 Switching signal from mC for bandswitching tothe 2 to 3 decoder IC7002

BASEBAND CVBS Baseband CVBS signal from the IF-detectorIC7015-6B to the FM-demodulator IC7015-6F

BCI Beam Current Info; If beam current increasesthe BCI signal decreases. BCI is used forcontrast reduction (if beam current is too high)and picture correction (if beam currentincreases (more white), EHT decreases sopicture will become too big, BCI decreases and

BG/L Switching signal from mC; "low" for BGIDKreception (negative modulation, FM sound),"high" for LL' reception (positive modulation,AM sound). The mC makes BG/L "low" in caseEUROPE or UK is selected, and "high" in caseFRANCE is selected.

BG/I Switching signal from mC; "low" for I reception(6.0 MHz FM sound), "high" for BG reception(5.5 MHz FM sound). The mC makes BG/I"low" in case UK is selected, and "high" in caseEUROPE or FRANCE is selected.

BRIGHTNESS Control signal (from mC, but on DC level viaRC network) for brightness control of the videocontroller IC7015-6D (0-5V)

C Chrominance part of the video signal; thissignal is also directly input at the SVHS plug

CCT Computer Controlled TeletextCONTRAST Control signal (from mC, but on DC level via

RC network) for contrast control of the videocontroller IC7015-6D and the teletext decoder(0-4V5)

CVBS Colour Video Blanking SynchronisationCVBS-EXT Incoming CVBS signal from pin 20 of scart to

the external input pin 15 IC7015-6BCVBS-INT Outgoing CVBS signal from sound trap on pin

7 IC7015-6A (IF detector) to output pin 19 ofscart

CVBS-TXT CVBS signal coming from the CVBS-INT orCVBS-EXT (IC7140 source select) to theteletext decoder

EEPROM Electrical Erasable Programmable Read OnlyMemory

ESD Electrical Static DischargeEXTERNAL 2 (SVHS) Switching signal from mC to input circuitry

IC7015-6B; "high" for SVHS mode, "low" fornon-SVHS mode

External power supply Separate supply to supply the clock, buzzerand the system card

Extra power supply Separate supply to supply the clock and theradio module in a non system set

FAST BLANKING Fast blanking signal made by adding the OSD,TXT and SCART fast blanking signals.

FAST-BL-SCART Fast blanking input signal from scart which isadded to the other fast blanking signals tocontrol the video controller IC7015-6D

FAST-BL-TXT Fast blanking signal from teletext which isadded to the other fast blanking signals tocontrol the video controller IC7015-6D

ff Filament (heater voltage) from LOT to thepicture tube

FLOF Full Level One FeatureFM FM demodulated sound from the FM-

demodulator IC7015-6F to source selectIC7140

G-SCART Green input signal from the scart to the videocontroller IC7015-6D

G-TXT Green input signal from the teletext decoder tothe video controller IC7015-6D

H.DRIVE Horizontal drive signal from IC7015-6E to lineoutput stage

HOR FLYBACK Horizontal flyback pulse (15625 Hz) used forlocking the horizontal oscillator in IC7015-6E

I2C Digital control bus of the microcomputerIDENT.VCR Status signal which is "high" in external mode;

this signal overrides the IDENT from IC7015-6A as otherwise the TV would switch "off" after15 minutes (normally if 15 minutes no IDENTthe mC will switch off the set).the picture will be corrected)BG/I/DK/LL' Sound system BG/I/DK/LL' indicates

frequency distance between sound and picturecarriers (5.5 MHz for BG, 6.0 MHz for I, 6.5MHz for DK and LL')

IDENT1 IDENT signal coming from IC7015-6A used formuting the AM sound signal in case no CVBSis detected. IDENT1 is "high" in case CVBS isdetected and so TS7142 only conducts in caseCVBS is detected by IC7015.

11 List of Abbreviations 37A7H.1IDENT2 Status signal from IC7015-6B; "low" for no

CVBS signal (horizontal sync not present),"high" in case CVBS signal is present(horizontal sync present) from the IF-detectorIC7015-6B to the mC.

IF Intermediate frequency signal from the tuner tothe AM-demodulator IC7125

IVT Integrated Video input processor and Teletextdecoder

L/L' Switching signal from mC; "low" for BGIDKL(picture at 38.9 MHz) reception, "high" for L'reception (picture at 33.4 MHz).In case FRANCE is selected and the tuning isin the lower part of the VHF1 band, the mCmakes L/L' "high"In case FRANCE is selected and the tuning isin the upper VHF1 or VHF3 or UHF band, themC makes L/L' "low". Also in case EUROPEand UK is selected the mC makes L/L' "low".

NIL Non Inter Lace; 25 Hz block-shaped signalfrom teletext to the frame amplifier forcoinciding the odd & even frames

OSD FAST BL Fast blanking info from OSD generator in mCto video controller IC7015-6D for blanking theRGB info to enable OSD-G insertion which isadded to the other fast blanking signals tocontrol video controller IC7015-6D

OSD-G Green info from OSD generator in mC to thevideo controller IC7015-6D for inserting greenOSD info on the screen

POR Power On Reset; ensures the mC starts up itssoftware only if the power supply of the mCitself is high enough

PP Personal PreferencePROT Protection signal from frame IC7400; in case

the vertical flyback generator in IC7400 is notactivated, the voltage on pin 8 IC7400becomes < 2V. By then the protection circuit inIC7400 will make pin 7 "high" overriding theHOR FLYBACK and SANDCASTLE. Theconstant "high" sandcastle is fed to thechrominance decoders (IC7015-6D andIC7250) and so the picture will become "black"

PT1/PT2 Pin reserved for pay-tv applications in thefuture

R-SCART Red input signal from the scart to the videocontroller IC7015-6D

R-TXT Red input signal from the teletext decoder tothe video controller IC7015-6D

RAM Random Access MemoryREL-BUS Release bus signal.ROM Read Only MemorySANDCASTLE1 Sandcastle signal from IC7015-6F to delay line

IC7271 and SECAM chroma decoder IC7250SANDCASTLE2 Sandcastle signal from IC7015-6F to mC.SATURATION Control signal (from mC, but on DC level via

RC network) for saturation control of the videocontroller IC7015-6D (0-2V5)

SAW Surface Acoustic Wave; high precisionbandpass filter

SC-OVER Scart overrule signal.SCL Clock line of the I2C-busSDA Data line of the I2C-busSDAM Service Default Alignment Mode; predefined

mode for faultfinding (see chapter 8)SHARPNESSCONTROL Control signal on DC level (0-5V) from mC to

IF-detector IC7015-6B) for sharpness control

Smart-loader Module which can be placed on the scartconnector to upload or download data from/tothe TV- set

SMPS Switched Mode Power SupplySTANDBY Switching signal from mC; "low" for standby

(power supply will be switched to stand-bymode), "high" for normal operation

STATUS Switching signal; "high" for internal CVBS,"low" for external CVBS; "low" in case uP INT/EXT is "high" and/or pin 8 of the scart is "high")

System-module Module to communicate to a central station tocommunicate messages etc.

TOP Table Of PagesuP INT/EXT Switching signal from the mC for internal or

external audio + video switching ("low" forinternal and "high" for external). This uP INT/EXT signal together with pin 8 of the scartmakes the switching signal STATUS

VB Supply voltage from the SMPS to the lineoutput stage

V.DRIVE Vertical drive signal from IC7015-6E to frameamplifier IC7400

VERT FEEDBACK 50 Hz vertical flyback pulse used for lockingthe vertical oscillator in IC7015-6E

Vg2 Voltage on grid 2 of the picture tubeVIP Video Input ProcessorVOLUME Control signal (from mC, but on DC level via

RC network) for volume control of soundprocessing in IC7015-6F

WST World System TeletextY Luminance part of the video signal; this signal

is also directly input at the SVHS plugSL-EN Signal to select the smart-loader. (smart loaderenable)

SM Service Menu

12 Spare parts list38 A7H.112 Spare parts listMain carrier

Various

4822 492 71655 (FRAME+AUDIO)4822 267 40699 4.FOLD

4822 256 92053 FUSE HOLDERCLICK (PROM)

4822 276 12597 SWITCH.MAINS4822 276 13307 CONTROL4822 404 31451 BRACKET TFK4822 492 70871 SPRING GR24822 256 91918 BI-LED4822 402 10178 BRACKET RADIO-

TUNER4822 402 10524 BRACKET TUNER4822 492 70871 SPRING GR24822 264 40207 3P MALE FOR BTB-

WTB 4822 265 30389 2P MALE 4822 267 60243 21 POLE

4822 265 30378 4P MALE FOR BTB-WTB

4822 290 40295 7P 4822 265 40596 2P MALE 4822 265 30389 2P MALE

4822 265 30899 5 P. 4822 265 20709 2PIN HEADER

2.5X3.814822 265 31138 BTB-4W4822 267 51452 7 WAY4822 264 40207 3P MALE FOR BTB-

WTB 4822 265 30389 2P MALE

4822 492 70871 SPRING GR24822 492 11528 SPRING4822 492 11528 SPRING4822 492 11528 SPRING4822 492 11528 SPRING

4822 255 70261 CRT SOCKET FL1 4822 255 70306 CON BM CRT V 8P F

M-NECK B1001 4822 210 10715 FL2477/85 PLL1015 4822 242 70936 OFWJ19521015 4822 242 72197 OFWK2950M1015 4822 242 81737 B39389-G1965-

M1001032 4822 242 81712 TPWA04B1033 4822 153 30025 TPS6,0MB1033 4822 242 81301 TPS6,5MB-TF211033 4822 242 81572 TPS6,0MB-TF211101 4822 242 81423 B39389-L9453-

M1001135 4822 242 70714 SFT5,5MA1135 4822 242 71841 SFT6,0MA1136 4822 242 10316 SFSF6,5MHz B-

TF211136 4822 242 70279 6,0MHz +/- 30KHZ1501 4822 070 33152 2183.15(3.15A)1502 4822 252 51185 19398E1(0,630A)1679 4822 242 10328 8MHz . 20P. HC49/U1685 4822 218 11745 TSOP17361701 4822 242 81246 27MHz 20P HC49/

UT1801 4822 212 10424 SMART LOADER

INTERFACE.4822 265 10457 PIN STRIP 8 CONN.4822 290 61234 1 P RED HOUSING

g

2001 4822 124 40201 1000F 20% 16V2007 4822 126 12944 47nF 10% 50V2008 5322 122 32967 5.6pF 10% 63V2010 4822 126 10326 180pF 5% 63V2011 4822 126 13693 56pF 1% 63V2012 4822 124 40252 33F 20% 63V2013 5322 122 31944 3.9pF 5% 50V2014 5322 126 10343 1.8pF 5% 63V2015 4822 124 81029 100F 20% 25V2016 4822 126 10002 100nF 20% 25V2017 4822 124 41579 10F 20% 50V2018 4822 126 13693 56pF 1% 63V2022 4822 126 10002 100nF 20% 25V2023 4822 124 80791 470F 16V 20% 85C

DXH=8X11.52025 4822 124 40763 2.2F 100 V2025 4822 124 40769 4.7F 20% 100V2030 4822 126 13482 470nF 80/20% 16V2034 4822 126 12944 47nF 10% 50V2037 4822 126 13061 220nF 20% 25V2041 5322 126 10223 4.7nF 10% 63V2043 5322 126 10223 4.7nF 10% 63V2044 5322 126 10223 4.7nF 10% 63V2045 4822 122 32139 12pF 2% 63V

2101 5322 126 10223 4.7nF 10% 63V2104 4822 124 11529 16V 47F 20%2109 4822 121 41738 270nF 5% 63V2112 4822 122 33891 3.3nF 10% 63V2113 4822 122 33891 3.3nF 10% 63V2117 5322 126 10223 4.7nF 10% 63V2120 4822 122 33175 2.2nF 20% 50V2120 4822 122 33891 3.3nF 10% 63V2122 5322 122 31865 1.5nF 10% 63V2122 5322 122 34123 1nF 10% 50V2123 4822 122 31644 2.2nF 10% 63V2124 4822 124 41579 10F 20% 50V2125 5322 122 32654 22nF 10% 63V2126 4822 124 40769 4.7F 20% 100V2127 4822 124 40763 2.2F 100 V2128 5322 122 32531 100pF 5% 50V2129 4822 124 41579 10F 20% 50V2152 4822 124 40763 2.2F 100 V2153 5322 122 32531 100pF 5% 50V2154 4822 122 33175 2.2nF 20% 50V2155 5322 121 42661 330nF 5% 63V2156 4822 126 13061 220nF 20% 25V2158 5322 126 10223 4.7nF 10% 63V2161 4822 124 40201 1000F 20% 16V2162 4822 122 33575 220pF 5% 50V2163 4822 124 40756 1F 20% 100V2169 4822 126 13695 82pF 1% 63V2170 4822 122 33177 10nF 20% 50V2171 5322 126 10223 4.7nF 10% 63V2180 4822 124 41579 10F 20% 50V2194 4822 122 33175 2.2nF 20% 50V2196 4822 124 80927 3.3F 20% 50V2197 4822 126 12944 47nF 10% 50V2198 4822 126 12944 47nF 10% 50V2239 4822 126 13296 100nF 10% 16V2248 4822 124 41579 10F 20% 50V2261 4822 122 33891 3.3nF 10% 63V2262 4822 126 10002 100nF 20% 25V2265 4822 126 13689 18pF 1% 63V2267 4822 126 13296 100nF 10% 16V2268 4822 121 42408 220nF 5% 63V2271 5322 122 32654 22nF 10% 63V2272 5322 122 34123 1nF 10% 50V2273 5322 122 34123 1nF 10% 50V2274 4822 126 13296 100nF 10% 16V2275 4822 126 13296 100nF 10% 16V2279 4822 126 13296 100nF 10% 16V2280 4822 126 13296 100nF 10% 16V2290 4822 126 13296 100nF 10% 16V2291 4822 122 33177 10nF 20% 50V2292 4822 122 33177 10nF 20% 50V2293 4822 122 33177 10nF 20% 50V2295 4822 124 40756 1F 20% 100V2297 4822 124 41751 47F 20% 50V2298 4822 126 13692 47pF 1% 63V2301 4822 124 80791 470F 16V 20% 85C

DXH=8X11.52304 5322 116 80853 560pF 5% 63V2304 5322 122 31863 330pF 5% 50V2324 4822 122 33216 270pF 5% 50V2324 5322 122 32268 470pF 10% 50V2340 5322 121 42386 100nF 5% 63V2344 5322 116 80853 560pF 5% 63V2344 5322 122 31863 330pF 5% 50V2345 4822 126 13473 220nF 80-20% 50V2350 5322 126 10223 4.7nF 10% 63V2351 4822 124 40756 1F 20% 100V2354 4822 126 12105 33nF 5% 63V2354 4822 126 13473 220nF 80-20% 50V2366 4822 122 33177 10nF 20% 50V2370 4822 124 40756 1F 20% 100V2371 5322 122 32654 22nF 10% 63V2373 4822 121 41926 33nF 5% 630V2374 4822 124 81107 4.7F 20% 250V2400 5322 122 32268 470pF 10% 50V2401 4822 124 80065 1000F 20% 50V2402 4822 124 40756 1F 20% 100V2404 4822 126 12944 47nF 10% 50V2405 4822 122 33175 2.2nF 20% 50V2408 5322 122 32654 22nF 10% 63V2415 4822 121 41856 22nF 5% 250V2415 4822 121 70162 10nF 5% 400V2420 4822 121 10514 1KV 10nF 5%2421 4822 121 51319 1F 10% 63V2422 4822 121 42376 470nF 5% 250V2423 4822 126 12269 680pF 10%) 2KV2424 4822 124 42105 1000F 20% 50V2425 4822 124 40214 1000F 20% 25V2425 4822 124 80064 680F 20% 50V2426 4822 124 80676 4.7F 20% 160V2427 5322 121 42489 33nF 5% 250V2428 4822 121 51319 1F 10% 63V2429 5322 121 42661 330nF 5% 63V2430 4822 121 42047 180nF 10% 250V2431 5322 126 10223 4.7nF 10% 63V2432 4822 122 33893 18nF 10% 63V2433 4822 124 80676 4.7F 20% 160V

2508 4822 126 14153 2.2nF 10%B 1KV2509 4822 126 14153 2.2nF 10%B 1KV2510 4822 121 70162 10nF 5% 400V2511 4822 124 81151 22F 50V2512 4822 124 40201 1000F 20% 16V2513 4822 126 13694 68pF 1% 63V2514 4822 124 40201 1000F 20% 16V2515 4822 124 81257 47F 50/10% 200V2516 4822 124 11532 400V 47F 20%2516 4822 124 11831 68F 20% 400V2517 5322 122 34123 1nF 10% 50V2519 4822 126 14153 2.2nF 10%B 1KV2520 4822 126 14153 2.2nF 10%B 1KV2521 4822 124 12126 10F 20% 400V2522 4822 126 13599 3.3nF 10% 500V2525 5322 121 42386 100nF 5% 63V2526 4822 124 40433 47F 20% 25V2527 4822 126 13597 330pF 10% 500V2528 4822 121 42408 220nF 5% 63V2529 4822 124 40756 1F 20% 100V2531 5322 121 42498 680nF 5% 63V2532 4822 124 40201 1000F 20% 16V2533 4822 124 40201 1000F 20% 16V2534 4822 124 81029 100F 20% 25V2535 5322 121 42386 100nF 5% 63V2536 5322 121 42498 680nF 5% 63V2537 4822 124 81151 22F 50V2538 5322 121 42489 33nF 5% 250V2539 4822 124 40433 47F 20% 25V2540 4822 121 42408 220nF 5% 63V2602 4822 124 41579 10F 20% 50V2604 4822 124 41579 10F 20% 50V2615 5322 122 32531 100pF 5% 50V2623 4822 124 40756 1F 20% 100V2624 4822 124 40769 4.7F 20% 100V2625 4822 122 32535 680pF 10% 63V2629 4822 124 40763 2.2F 100 V2630 4822 124 40763 2.2F 100 V2651 4822 122 32535 680pF 10% 63V2658 4822 126 13694 68pF 1% 63V2662 4822 122 33175 2.2nF 20% 50V2663 5322 126 10223 4.7nF 10% 63V2666 4822 124 40255 100F 20% 63V2667 5322 122 32531 100pF 5% 50V2668 4822 124 40255 100F 20% 63V2669 5322 122 32448 10pF 5% 50V2676 4822 126 13692 47pF 1% 63V2677 5322 122 32448 10pF 5% 50V2678 5322 122 32448 10pF 5% 50V2680 5322 122 32658 22pF 5% 50V2681 5322 122 32658 22pF 5% 50V2682 5322 122 34123 1nF 10% 50V2685 4822 124 81029 100F 20% 25V2686 4822 126 13482 470nF 80/20% 16V2689 4822 122 32535 680pF 10% 63V2701 5322 122 33244 8.2pF 5% 50V2702 4822 126 13486 15pF 2% 63V2703 5322 126 10511 1nF 5% 50V2704 4822 126 10002 100nF 20% 25V2705 4822 126 10002 100nF 20% 25V2706 4822 124 41579 10F 20% 50V2707 4822 126 13296 100nF 10% 16V2711 4822 126 10002 100nF 20% 25V2715 4822 126 10002 100nF 20% 25V2732 4822 126 13296 100nF 10% 16V2734 4822 124 41579 10F 20% 50V2848 4822 124 41579 10F 20% 50V2849 5322 122 32268 470pF 10% 50V2850 4822 122 33575 220pF 5% 50V2852 4822 122 33575 220pF 5% 50V2860 5322 126 10223 4.7nF 10% 63V2877 4822 126 13061 220nF 20% 25V2900 4822 121 40434 330nF 10% 100V2901 4822 121 40434 330nF 10% 100V2902 4822 124 40242 1F 20% 63V2903 4822 122 33642 150pF 5% 50V2904 4822 124 81151 22F 50V2905 4822 124 41538 220F 35V2906 4822 124 40246 4.7F 20% 63V

DXH=5X112907 4822 124 80064 680F 20% 50V2910 4822 121 70637 8.2nF 5% 1600V2912 4822 126 12267 470pF 10%) 2KV2915 4822 121 51612 330nF 5% 250V2916 4822 124 42105 1000F 20% 50V2917 4822 122 33177 10nF 20% 50V

f

3001 4822 052 10278 27 5% 0.33W3005 4822 051 10102 1k 2% 0.25W3008 4822 051 20399 39 5% 0.1W3009 4822 051 20399 39 5% 0.1W3010 4822 051 20829 82 5% 0.1W3011 4822 051 20154 150k 5% 0.1W3012 4822 051 20332 3k3 5% 0.1W

3023 4822 051 20182 1k8 5% 0.1W3030 4822 116 52175 100 5% 0.5W3031 4822 051 20331 330 5% 0.1W3032 4822 051 20121 120 5% 0.1W3032 4822 117 10353 150 1% 0.1W3033 4822 051 20182 1k8 5% 0.1W3035 4822 051 20104 100k 5% 0.1W3036 4822 051 20104 100k 5% 0.1W3043 4822 117 10833 10k 1% 0.1W3044 4822 117 10833 10k 1% 0.1W3049 4822 051 20683 68k 5% 0.1W3051 4822 051 10102 1k 2% 0.25W3100 4822 051 20184 180k 5% 0.1W3110 4822 116 83881 390 5% 0.5W3111 4822 051 20561 560 5% 0.1W3112 4822 051 20822 8k2 5% 0.1W3115 4822 116 83883 470 5% 0.5W3116 4822 117 11449 2k2 1% 0.1W3117 4822 117 10833 10k 1% 0.1W3118 4822 117 10833 10k 1% 0.1W3119 4822 117 10833 10k 1% 0.1W3120 4822 117 10833 10k 1% 0.1W3121 4822 051 10104 100k 2% 0.25W3124 4822 052 10109 10 5% 0.33W3125 4822 117 11149 82k 1% 0.1W3126 4822 116 52289 5k6 5% 0.5W3127 4822 051 20223 22k 5% 0.1W3134 4822 053 11339 33 5% 2W3134 4822 053 11479 47 5% 2W3134 4822 053 11569 56 5% 2W3140 4822 051 20332 3k3 5% 0.1W3141 4822 051 10472 4k7 2% 0.25W3142 4822 116 83864 10k 5% 0.5W3143 4822 051 20223 22k 5% 0.1W3144 4822 116 52264 27k 5% 0.5W3145 4822 051 20224 220k 5% 0.1W3146 4822 116 52234 100k 5% 0.5W3147 4822 050 11002 1k 1% 0.4W3148 4822 051 20224 220k 5% 0.1W3149 4822 051 10223 22k 2% 0.25W3150 4822 116 52269 3k3 5% 0.5W3151 4822 051 10332 3k3 2% 0.25W3152 4822 117 11139 1k5 1% 0.1W3153 4822 117 10833 10k 1% 0.1W3154 4822 051 20273 27k 5% 0.1W3155 4822 051 20332 3k3 5% 0.1W3156 4822 051 20182 1k8 5% 0.1W3157 4822 051 10102 1k 2% 0.25W3158 4822 116 83864 10k 5% 0.5W3159 4822 051 20822 8k2 5% 0.1W3163 4822 116 52283 4k7 5% 0.5W3164 4822 117 11449 2k2 1% 0.1W3165 4822 051 10103 10k 2% 0.25W3169 4822 116 83864 10k 5% 0.5W3170 4822 116 83884 47k 5% 0.5W3171 4822 117 11449 2k2 1% 0.1W3172 4822 051 10102 1k 2% 0.25W3173 4822 117 10833 10k 1% 0.1W3198 4822 050 26808 68 1% 0.6W3243 4822 117 10833 10k 1% 0.1W3245 4822 051 20223 22k 5% 0.1W3246 4822 117 10833 10k 1% 0.1W3248 4822 117 10833 10k 1% 0.1W3259 4822 051 20182 1k8 5% 0.1W3284 4822 116 52202 82 5% 0.5W3285 4822 116 52202 82 5% 0.5W3286 4822 116 52202 82 5% 0.5W3288 4822 051 20008 0 jumper . (0805)3291 4822 051 20008 0 jumper . (0805)3292 4822 117 10833 10k 1% 0.1W3293 4822 051 20822 8k2 5% 0.1W3294 4822 051 20104 100k 5% 0.1W3295 4822 117 10833 10k 1% 0.1W3296 4822 116 83872 220 5% 0.5W3297 4822 117 10353 150 1% 0.1W3298 4822 117 10353 150 1% 0.1W3299 4822 117 10353 150 1% 0.1W3300 4822 100 12226 2k2 30% LIN0.1W3301 4822 116 83872 220 5% 0.5W3303 4822 116 52219 330 5% 0.5W3304 4822 116 52197 56 5% 0.5W3310 4822 100 12227 4k7 30% LIN0.1W3311 4822 116 52207 1k2 5% 0.5W3312 4822 116 52175 100 5% 0.5W3313 4822 116 83868 150 5% 0.5W3314 4822 053 11123 12k 5% 2W3315 4822 050 21502 1k5 1% 0.6W3316 4822 051 20562 5k6 5% 0.1W 08053317 4822 117 12955 2k7 1% 0.1W 08053318 4822 116 52244 15k 5% 0.5W3320 4822 100 12226 2k2 30% LIN0.1W3321 4822 116 83881 390 5% 0.5W3322 4822 116 52243 1k5 5% 0.5W3323 4822 051 20331 330 5% 0.1W3324 4822 116 52197 56 5% 0.5W3325 4822 051 20562 5k6 5% 0.1W 08053330 4822 100 12227 4k7 30% LIN0.1W2045 4822 126 13689 18pF 1% 63V2050 4822 126 13296 100nF 10% 16V2053 4822 126 13296 100nF 10% 16V2080 5322 122 32654 22nF 10% 63V2082 4822 124 40763 2.2F 100 V2084 4822 126 13296 100nF 10% 16V

2500 4822 126 13597 330pF 10% 500V2501 4822 126 11524 1.5nF 10% 1KV2502 4822 121 43856 4.7nF 5% 250V2503 5322 121 42489 33nF 5% 250V2505 4822 126 14037 2.2nF 20% 250V2506 4822 121 43343 4.7nF 10% 400V2507 4822 121 10512 275V 220nF 20%

3014 4822 117 11449 2k2 1% 0.1W3016 4822 051 10102 1k 2% 0.25W3017 4822 117 10833 10k 1% 0.1W3018 4822 051 20333 33k 5% 0.1W3020 4822 116 52231 820 5% 0.5W3021 4822 101 11204 4.7k 30%3022 4822 051 20822 8k2 5% 0.1W

3331 4822 116 52207 1k2 5% 0.5W3332 4822 116 52234 100k 5% 0.5W3332 4822 116 83878 270k 5% 0.5W3333 4822 116 83868 150 5% 0.5W3334 4822 053 11123 12k 5% 2W3335 4822 050 21502 1k5 1% 0.6W3336 4822 116 52175 100 5% 0.5W

12 Spare parts list 39A7H.13339 4822 053 11123 12k 5% 2W3340 4822 051 20275 2M7 5% 0.1W3341 4822 116 81223 1M 2 5% 0.5W3342 4822 050 11002 1k 1% 0.4W3343 4822 051 20331 330 5% 0.1W3344 4822 116 52197 56 5% 0.5W3345 4822 052 10151 150 5% 0.33W3346 4822 100 12227 4k7 30% LIN0.1W3347 4822 116 52207 1k2 5% 0.5W3348 4822 116 83868 150 5% 0.5W3351 4822 051 20153 15k 5% 0.1W3352 4822 116 52175 100 5% 0.5W3353 4822 051 20474 470k 5% 0.1W3354 4822 100 11483 10k 30% 0.1W3355 4822 050 21502 1k5 1% 0.6W3357 4822 051 20562 5k6 5% 0.1W 08053360 4822 117 11504 270 1% 0.1W3361 4822 051 20332 3k3 5% 0.1W3362 4822 051 20681 680 5% 0.1W3363 4822 052 10109 10 5% 0.33W3368 4822 116 83884 47k 5% 0.5W3369 4822 051 20224 220k 5% 0.1W3370 4822 051 20684 680k 5% 0.1W3371 4822 052 10228 22 5% 0.33W3371 4822 052 11108 1 5% 0.5W3372 4822 052 10228 22 5% 0.33W3373 4822 050 21502 1k5 1% 0.6W3374 4822 050 21502 1k5 1% 0.6W3400 4822 051 20333 33k 5% 0.1W3401 4822 051 20154 150k 5% 0.1W3402 4822 051 20681 680 5% 0.1W3403 4822 052 10689 68 5% 0.33W3404 4822 052 10158 15 5% 0.33W3405 4822 052 11228 22 5% 0.5W3406 4822 053 10182 1k8 5% 1W3407 5322 100 11588 220 30%lin 0.1W3408 4822 051 20472 4k7 5% 0.1W3409 4822 051 10102 1k 2% 0.25W3410 4822 051 10008 0 5% 0.25W3410 4822 051 20393 39k 5% 0.1W3411 4822 116 52243 1k5 5% 0.5W3412 4822 117 11449 2k2 1% 0.1W3415 4822 053 12279 27 5% 3W3415 4822 053 12399 39 5% 3W3417 4822 116 52272 330k 5% 0.5W3419 4822 116 52303 8k2 5% 0.5W3420 4822 116 83882 39k 5% 0.5W3420 4822 116 83884 47k 5% 0.5W3421 4822 116 52244 15k 5% 0.5W3422 4822 117 12955 2k7 1% 0.1W 08053423 4822 051 20561 560 5% 0.1W3424 4822 052 10109 10 5% 0.33W3425 4822 053 11129 12 5% 2W3426 4822 116 52283 4k7 5% 0.5W3426 4822 116 52289 5k6 5% 0.5W3427 4822 052 10228 22 5% 0.33W3427 4822 052 11108 1 5% 0.5W3428 4822 052 11108 1 5% 0.5W3430 4822 052 10821 820 5% 0.33W3431 4822 052 11471 470 5% 0.5W3432 4822 051 20105 1M 5% 0.1W3432 4822 051 20225 2M2 5% 0.1W3433 4822 051 20393 39k 5% 0.1W3434 4822 051 20223 22k 5% 0.1W3436 4822 052 10151 150 5% 0.33W3437 4822 053 11103 10k 5% 2W3440 4822 116 52213 180 5% 0.5W3440 4822 116 83868 150 5% 0.5W3500 4822 051 20471 470 5% 0.1W3503 4822 116 83864 10k 5% 0.5W3504 4822 116 52219 330 5% 0.5W3505 4822 116 52175 100 5% 0.5W3505 4822 116 52213 180 5% 0.5W3506 4822 117 12094 5% PR013507 4822 050 21202 1k2 1% 0.6W3507 4822 050 21302 1k3 1% 0.6W3508 4822 117 12095 6k8 5%3509 4822 116 52271 33k 5% 0.5W3510 4822 117 12096 22k 1%3511 4822 053 10272 2k7 5% 1W3512 4822 116 52297 68k 5% 0.5W3513 4822 053 10334 330k 5% 1W3514 4822 052 10108 1 5% 0.33W3515 4822 052 10108 1 5% 0.33W3516 4822 116 40137 PTC 36 365V3518 4822 117 12952 120k 5% 1W3519 4822 051 20105 1M 5% 0.1W3521 4822 117 11504 270 1% 0.1W3523 4822 052 10108 1 5% 0.33W3524 4822 052 11108 1 5% 0.5W3525 4822 116 83876 270 5% 0.5W3526 4822 116 83883 470 5% 0.5W3527 4822 116 52271 33k 5% 0.5W3528 4822 050 24702 4k7 1% 0.6W3529 4822 116 83872 220 5% 0.5W3530 4822 050 23902 3k9 1% 0.6W3531 4822 116 83883 470 5% 0.5W

3540 4822 116 52207 1k2 5% 0.5W3543 4822 051 20101 100 5% 0.1W3544 4822 117 11504 270 1% 0.1W3547 4822 117 10833 10k 1% 0.1W3550 4822 051 20681 680 5% 0.1W3601 4822 116 52303 8k2 5% 0.5W3602 4822 116 52303 8k2 5% 0.5W3605 4822 051 20332 3k3 5% 0.1W3605 4822 117 10833 10k 1% 0.1W3608 4822 051 20472 4k7 5% 0.1W3612 4822 116 52257 22k 5% 0.5W3615 4822 117 10834 47k 1% 0.1W3617 4822 051 20472 4k7 5% 0.1W3618 4822 051 10332 3k3 2% 0.25W3619 4822 050 11002 1k 1% 0.4W3620 4822 116 83864 10k 5% 0.5W3621 4822 051 20223 22k 5% 0.1W3621 4822 051 20333 33k 5% 0.1W3623 4822 117 10833 10k 1% 0.1W3624 4822 051 20104 100k 5% 0.1W3625 4822 051 20333 33k 5% 0.1W3628 4822 051 20333 33k 5% 0.1W3630 4822 117 12345 360k 1% 0.1W3631 4822 050 21504 150k 1% 0.6W3632 4822 051 10102 1k 2% 0.25W3648 4822 116 52195 47 5% 0.5W3649 4822 116 52195 47 5% 0.5W3650 4822 050 11002 1k 1% 0.4W3651 4822 117 10833 10k 1% 0.1W3652 4822 051 20472 4k7 5% 0.1W3653 4822 051 20472 4k7 5% 0.1W3654 4822 117 11449 2k2 1% 0.1W3655 4822 117 12955 2k7 1% 0.1W 08053656 4822 116 52283 4k7 5% 0.5W3658 4822 117 12955 2k7 1% 0.1W 08053659 4822 051 20182 1k8 5% 0.1W3659 4822 117 11449 2k2 1% 0.1W3660 4822 116 52175 100 5% 0.5W3661 4822 050 11002 1k 1% 0.4W3662 4822 051 20333 33k 5% 0.1W3663 4822 117 10353 150 1% 0.1W3664 4822 051 20683 68k 5% 0.1W3665 4822 051 20683 68k 5% 0.1W3666 4822 116 83868 150 5% 0.5W3667 4822 116 83864 10k 5% 0.5W3668 4822 051 20433 43k 5% 0.1W3669 4822 117 10833 10k 1% 0.1W3670 4822 116 83864 10k 5% 0.5W3671 4822 051 10103 10k 2% 0.25W3672 4822 117 11449 2k2 1% 0.1W3673 4822 117 10833 10k 1% 0.1W3674 4822 117 11449 2k2 1% 0.1W3675 4822 051 20008 0 jumper . (0805)3676 4822 116 83864 10k 5% 0.5W3677 4822 117 12955 2k7 1% 0.1W 08053679 4822 117 11449 2k2 1% 0.1W3680 4822 051 20101 100 5% 0.1W3681 4822 051 20472 4k7 5% 0.1W3682 4822 051 20101 100 5% 0.1W3683 4822 051 20101 100 5% 0.1W3684 4822 051 20332 3k3 5% 0.1W3685 4822 051 20332 3k3 5% 0.1W3691 4822 050 11002 1k 1% 0.4W3694 4822 051 20472 4k7 5% 0.1W3695 4822 051 20153 15k 5% 0.1W3696 4822 051 20153 15k 5% 0.1W3697 4822 051 20153 15k 5% 0.1W3698 4822 051 20333 33k 5% 0.1W3702 4822 051 20332 3k3 5% 0.1W3704 4822 051 20562 5k6 5% 0.1W 08053705 4822 051 20273 27k 5% 0.1W3706 4822 051 20331 330 5% 0.1W3707 4822 117 11449 2k2 1% 0.1W3709 4822 051 20333 33k 5% 0.1W3713 4822 051 20223 22k 5% 0.1W3714 4822 117 10833 10k 1% 0.1W3716 4822 117 10353 150 1% 0.1W3718 4822 117 10353 150 1% 0.1W3719 4822 117 11454 820 1% 0.1W3720 4822 050 11002 1k 1% 0.4W3722 4822 051 20472 4k7 5% 0.1W3723 4822 051 20333 33k 5% 0.1W3724 4822 051 20332 3k3 5% 0.1W3728 4822 117 10833 10k 1% 0.1W3729 4822 117 11503 220 1% 0.1W3731 4822 051 20471 470 5% 0.1W3732 4822 051 10102 1k 2% 0.25W3733 4822 051 10102 1k 2% 0.25W3736 4822 117 10834 47k 1% 0.1W3737 4822 051 10102 1k 2% 0.25W3738 4822 117 10834 47k 1% 0.1W3740 4822 051 20122 1k2 5% 0.1W3740 4822 117 11139 1k5 1% 0.1W3741 4822 051 20122 1k2 5% 0.1W3741 4822 117 11139 1k5 1% 0.1W3742 4822 051 20122 1k2 5% 0.1W3742 4822 117 11139 1k5 1% 0.1W

3769 4822 051 20472 4k7 5% 0.1W3770 4822 051 20472 4k7 5% 0.1W3781 4822 051 10822 8k2 2% 0.25W3781 4822 117 11449 2k2 1% 0.1W3786 4822 051 10102 1k 2% 0.25W3850 4822 051 20562 5k6 5% 0.1W 08053851 4822 116 80747 75 5% 0.125W3852 4822 051 20562 5k6 5% 0.1W 08053853 4822 116 80747 75 5% 0.125W3855 4822 116 80747 75 5% 0.125W3860 4822 051 20471 470 5% 0.1W3862 4822 051 20471 470 5% 0.1W3865 4822 116 80747 75 5% 0.125W3871 4822 117 11503 220 1% 0.1W3875 4822 116 80747 75 5% 0.125W3876 4822 051 10332 3k3 2% 0.25W3878 4822 117 10965 18k 1% 0.1W3879 4822 051 10473 47k 2% 0.25W3880 4822 051 20562 5k6 5% 0.1W 08053881 4822 117 10833 10k 1% 0.1W3887 4822 051 20471 470 5% 0.1W3888 4822 117 11139 1k5 1% 0.1W3889 4822 051 10751 750 2% 0.25W3890 4822 117 11507 6k8 1% 0.1W3891 4822 117 10833 10k 1% 0.1W3892 4822 116 52269 3k3 5% 0.5W3895 4822 116 80747 75 5% 0.125W3900 4822 051 20225 2M2 5% 0.1W3901 4822 051 20225 2M2 5% 0.1W3902 4822 116 52257 22k 5% 0.5W3903 4822 101 11187 1k 30%LIN 0.1W3904 4822 116 52291 56k 5% 0.5W3905 4822 116 52175 100 5% 0.5W390