Philips l91a_473 Datasheet

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Page 1

Colour Television Chassis

L9.1A

CL 86532104_006.eps

300399

ServiceManual

Table of contents Page

1. Technical specifications 2

2. Connection facilities and chassis overview 3

3. Safety and maintenance instructions 5

4. Mechanical instructions 7

5. Faultfinding and repair tips 8

6. Fault finding trees 15 Supply voltages diagram 19 Blockdiagram 20 Testpoint overviews 21

7. Electrical Diagrams and print lay-outs

Diagram PWB

Power supply diagram A1 22 30,32 Diversity tables 23 30,32 Horizontal deflection diagram A2 24 30,32 Vertical deflection diagram A3 25 30,32 Synchronisation diagram A4 26 30,32 Tuner and VIF diagram A5 27 30,32

Published by JR9964 TV Service DepartmentPrinted in The NetherlandsCopyright reserved 1999 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 permision of Philips.Subject to modification5 4822 727 21704

Video processing diagram A6 28 30,32 Control diagram A7 29 30,32 Front Control diagram A8 31 30,32 BTSC Decoder diagram A9 34 30,32 NICAM/2CS diagram A10 35 30,32 Smart Sound diagram A11 37 30,32 Audio amplifier diagram A12 36 30,32 Headphone diagram A13 37 30,32 Rear IO Cinch diagram A14 38 30,32 CRT panel diagram B 39 40 Side AV diagram E 33 33

8. Alignments 41

9. Circuit description new circuits 46

10. Directions for use 52

11. List of abbreviations 61

12. Spare parts list 63

Copyright reserved 1999 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored ina retrievalsystem ortransmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permision of Philips.

Published by JR9964 TV Service Department Printed in The Netherlands Subject to modification 5 4822 727 21704

Page 2

2 L9.1A

1 Technical Specifications

Mains voltage : 90V - 276Vac; Mains frequency : 50 - 60Hz Maximum power consumption : 25" : 75W +/- 10%

Standby power consumption : 7W +/- 10% Colour Synchronisation : Sub-carrier pull in range : +/- 300Hz for NTSC : +/- 250Hz Horizontal Synchronisation : Catching range : +/- 600 Hz Holding range : +/- 1200 Hz Vertical Locking Range : 49 Hz - 61Hz Tuners : UV 1316/AI-2 (PAL)

1 Technical Specifications

: 29" : 90W +/- 10%

: UV 1316/AIU-2 (PAL) : UV1356C/AI ( PAL) : TEDH9X001 (NTSC)

Page 3

2 Connection facilities and chassis overview

2.1 Specification of the terminal sockets

Video

S-Video

IN OUTIN

L Audio R

3L9.1A

Figure 2-1

2.1.1 Inputs (AV1, AV2 and Side AV)

- Cinch CVBS (yellow)(1Vpp +/- 3dB 75Ω) q

- Cinch Audio R (red) (0.2-2VRMS 10kΩ) q

- Cinch Audio L (white) (0.2-2VRMS 10kΩ) q

2.1.2 Outputs (MONITOR out)

- Cinch CVBS (yellow) (1Vpp +/- 3dB 75Ω) q

- Cinch Audio R (red) (0.5VRMS < 1kΩ) q

- Cinch Audio L (white) (0.5VRMS < 1kΩ) q

SIDE AV PANEL

Figure 2-2

CL 86532104_069.AI

290399

2.1.3 Headphone

- Jack 8-600Ω (4mW) t

2.1.4 SVHS

1- Ground v 2- Ground v 3- Y (1Vpp +/- 3dB 75Ω) p 4- C (0.3Vpp +/- 3dB 75Ω) p

2.2 PCB location drawing

CRT PANEL

POWER SUPPLY

MAIN

CHASSIS

PANEL

HOR.DEFLECTION VERT. DEFLECTION SYNCHRONISATION TUNER + VIDEO IF VIDEO PROCESSING CONTROL (µC) FRONT CONTROLS BTSC DECODER (RES) NICAM + 2CS DECODER SMART SOUND AUDIO AMPLIFIER HEADPHONE I/O CINCH

CL 86532104_004ap.eps

B A1 A2 A3 A4 A5 A6 A7 A8 A9

A10 A11 A12 A13 A14

010499

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4 L9.1A

3 Safety and maintenance instructions

3.1 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 to the original ones;

– when replacing the CRT, safety goggles must be worn.

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

solder joints through which the horizontal deflection current 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 bad connections due to metal fatigue in solder joints and is therefore only necessary for television sets older than 2 years. The wire trees and EHT cable should be routed correctly and fixed with the mounted cable clamps.

– The insulation of the mains lead should be checked for

external damage.

– The mains lead strain relief should be checked for its

function in order to avoid touching the CRT, hot components or heat sinks.

– The electrical DC resistance between the mains plug

and the secondary side should be checked (only for sets which have a mains isolated power supply). This check can be done as follows:

• unplugthe 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 tuner or the aerial connection on the set. The reading should be between 4.5 MΩ and 12 MΩ;

• switch off the TVand remove the wire between the two pins of the mains plug.

– The cabinet should be checked for defects to avoid

touching of any inner parts by the customer.

3.2 Maintenance instruction

It is recommended to have a maintenance inspection carried out by a qualified service employee. The interval depends on the usage conditions:

– When the set is used under normal circumstances, for

example in a living room, the recommended interval is 3 to 5 years.

– When the set is used in circumstances with higher dust,

grease or moisture levels, for example in a kitchen, the recommended interval is 1 year.

– The maintenance inspection contains thefollowing actions:

• Execute the above mentioned 'general repair instruction'.

• Clean the power supply and deflection circuitry on the chassis.

• Cleanthepicturetubepanelandthe neck of the picture tube.

3.3 Warnings

1. ESD All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this same potential. – complete kit ESD3 small table mat, wristband,

connectionbox, extensioncable and earthcable 4822 310 10671

– wristband tester 4822 344 13999

2. In order to prevent damage to ICs and transistors, all highvoltage flashovers must be avoided. In order to prevent damage to the picture tube, the method shown in Fig. 3.2 should be used to discharge the picture tube. Use a highvoltageprobe and a multimeter (positionDC-V). Discharge until the meter reading is 0V (after approx. 30s).

3. Togetherwith the deflection unit and anymultipole unit, the flat square picture tubes used from an integrated unit. The deflection and the multipole units are set optimally at the factory.Adjustmentofthisunit during repair is therefore not recommended.

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

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

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

7. Wearsafety goggles during replacement ofthe picture tube

3.4 Notes

1. The direct voltages and oscillograms should be measured with regard to the tuner earth , or hot earth as this is called (see fig. 3.3)

2. The direct voltages and oscillograms shown in the diagrams are indicative and should be measured in the Service Default Mode (see chapter 8) with a colour bar signal and stereo sound (L:3 kHz, R:1 kHz unless stated otherwise) and picture carrier at 475.25 MHz.

3. Wherenecessary, the oscillograms and directvoltages are measured with and without aerial signal. Voltages in the power supply section are measured both for normal operation and in standby . These values are indicated by means of the appropriate symbols (see fig. 3.3).

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

5. The semiconductors indicated in the circuit diagram and in the parts lists are completely interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors.

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3 Safety and maintenance instructions

CL 26532098/042

140792

Figure 3-2

5L9.1A

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 señal de antena

normal condition

normaal bedrijf fonctionnement normal

normaler Betrieb funzionamento normale funcionamiento normal

hot earth

hete aarde la terre directe heißen Erde

massa calda

tierra caliente

without aerial signal

zonder antenne signaal

sans signal d'antenne

.ohne Antennensignal senza segnale d'antenn sin la señal de antena

stand by

position de veille

in Bereitschaft modo di attesa posición de espera

Figure 3-3

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6 L9.1A

4 Mechanical instructions

4.1 Service positions

See figure 4.1 for the service position.

1. Disconnect the connecting cable feeding the right-hand speaker, also disconnect the degaussing cable.

2. The mono-carrier is removed by pushing the two centre clips (1) at both chassis brackets outwards and pulling the panel forward. (2)

3. Flip the mono-carrier over so that the component side of the board faces towards the CRT.

4. Slide the metal heat sink underneath the left chassis bracket (3) until the carrier is locked in position.

Figure 4-1

CL 86532104_007.ai

170299

Page 7

5 Fault finding and repair tips

This chapter includes information covering:

5.1 Test points

5.2 Service Modes and Dealer Service Tool (DST)

5.3 The menus and submenus

5.4 Error code buffer and error codes

5.5 The "blinking LED" procedure

5.6 Trouble shooting tips

5.7 Customer Service Mode ( CSM )

5.8 Computer Aided Repair ( ComPair )

5.9 Ordering ComPair

5.1 Test points

The L9 chassis is equipped with easily identifiable test points. These are clearly marked on the PCB. The test points refer to specific functional blocks, these are:

• A1-A2-A3, etc.: Test points for the BTSC decoder (A9), Nicam + 2CS decoder (A10) and Audio Amplifier (A12)

• C1-C2-C3, etc.: Test points for the control circuit (A7)/ front control ( A8 )

• F1-F2-F3, etc.: Test points for the vertical deflection circuit (A3)

• I1-I2-I3, etc.: Test points for the tuner + Video IF circuit (A5)

• L1-L2-L3, etc.: Test points for the horizontal deflection circuit (A2)

• P1-P2-P3, etc.: Test points for the power supply (A1)

• S1-S2-S3, etc.: Test points for the synchronisation circuit (A4)

• V1-V2-V3, etc.: Test points for the video processing circuitry (A6) / CRT panel (B)

Measurements are performed under the following conditions:

Video: colour bar signal; audio: 3kHz left, 1kHz right

5.2 Service modes and Dealer Service Tool (DST)

7L9.1A

• Used to provide a pre-defined situation (pre-defined parameters), so that the same measurements can be obtained as per the service manual.

• Overrides the 5V protection when the internal method of SDM is used (connecting together pin M24 and pin M25).

• starts the LED flashing procedure

• Setting up of options codes

• Inspect the error buffer

Entering the SDM:

– Bytransmitting the "DEFAULT" command with the RC7150

Dealer Service Tool (this works both while the set is in normal operation mode or in the SAM)

– Standard RC sequence 062596 followed by the key

"MENU"

– By connecting test-pins M25 and M24 together (on the

mono-carrier)while switching on the set. Afterswitchingon the set the link should be removed ( Caution!! By entering the SDM mode you override the 5V protections ).

Exit the SDM:

Switch the set to Standby or press EXIT on the DST (the error buffer is also cleared).

Note: When the mains power is switched off while the set is in SDM, the set will switch to SDM immediately when the mains is switched on again. ( The error buffer will not be cleared ).

The SDM sets the following pre-defined conditions:

• Pal/Secam sets: tuning at 475.25 PAL

• NTSC sets : tuning channel 3 at 61.25MHz

Volume level is set to 25% (of the maximum volume level). Other picture and sound settings are set to 50%. The following functions are "ignored" in SDM since they interfere with diagnosing/repairingaset. "Ignoring" means that the event that is triggered is not executed, the setting remains unchanged.

For easy installation and diagnosis, the dealer service tool (DST) RC7150 can be used. When there is no picture (to accesstheerrorcodebuffer via the OSD). The DST can enable to set to display the entire contents of the error code buffers by using the flashing LED procedure.

Important Note: The L9 does not incorporate two way Infra red communication.

The part number for the DST (RC7150) is 4822 218 21232.

5.2.1 Installation features for the dealer

The dealer can use the RC7150 for programming the TV-set with presets. 10 Different program tables can be programmed into the DST via a GFL TV, MD or MG set (downloading from the TV to the DST; for example see the GFL service manuals). For an explanation of the installation features of the DST, please see the directions of use for use of the DST (for the L9 chassis, download code 4 should be used).

5.2.2 Diagnosis features for the servicer

L9 models can be put into either of the two available service modes by using the RC7150. These are the Service Default Mode (SDM) and the Service Alignment Mode (SAM).

5.2.3 Service Default Mode (SDM)

The purpose of the SDM is:

• (Sleep)Timer

• Blue mute

• Auto switch off

• Hotel or Hospitality Mode

• Child lock or Parental lock

• Skipping, blanking of "Not favourite" present/channels

• Automatic storing of Personal Preset settings

• Automatic user menu time-out

All other controls operate normally.

5.2.4 Special functions in SDM

Access to normal user menu

Pressing the "MENU" button on the remote control will enter thenormal user menu (TV lock, Installation, Brightness, colour andcontrast)while"SMD"remainsdisplayed intopofscreen). Pressing the "MENU" key again will return to the last SDM status.

Error buffer

Pressingthe"OSD" button of the remote control shows all OSD (incl. error buffer).

Access to SAM

By pressing the "CHANNEL DOWN" and "VOLUME DOWN" buttons on the local keyboard simultaneously the set switches from SDM to SAM or pressing "ALIGN" on the DST

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8 L9.1A

5 Fault finding and repair tips

In the SDM the following information is displayed on the screen:

LLLL L90BBC X.Y SDM OP VALUE OB1 OB2 OB3 OB4 OB5 OB6 OB7

ERR xx xx xx xx xx

SDM

TV LOCK

INSTALLATION BRIGHTNESS COLOUR CONTRAST

llllll llllll llllll

CL 86532104_015.eps

Figure 5-1 : Service Default Mode screens and

structure

Explanation notes/references:

(1) "LLLL" Operation hours timer (hexadecimal)

(2)Softwareidentificationofthemainmicrocontroller(L90BBC X.Y)

• L90 is the chassis name for L9.0E

• BBC is a 2 letter and 1 digit combination that indicates the software type and the supported languages:

• X = (main version number)

• Y = (subversion number) BB = (range specification )

......

SDM

31 31 31

160299

5.2.5 Service Alignment Mode (SAM)

The SAM allows adjustment of the Demodulator I.F, align the white tone, adjust the picture geometry and sound adjustments.

For easy identification of the SAM mode, "SAM" is displayed in the top of the right side of the screen

Entering SAM:

– By transmitting the "ALIGN" command with the RC7150

Dealer Service Tool

– By pressing the "CHANNEL DOWN" and "VOLUME

DOWN" key on the local keyboard simultaneously when

the set is in SDM – Standard RC sequence 062596 followed by the key "OSD" – By shorting test-pins M28 and M29 on the mono-carrier

while switching on the set. After switching on the set the

short-circuit can be removed. ( Caution!! Override of 5V

protections ).

Exiting the SAM:

Switch the set to standby or press EXIT on the DST (the error buffer is cleared).

Note: When the mains power is switched off while the set is in SAM, the set willswitch to SAM immediatelywhen the mains is switched on again. ( The error buffer will not be cleared ).

Inthe SAM the followinginformation is displayed on thescreen:

(3) "SDM" To indicate that the TV set is in de service mode

(4) "OP" Options Code consist of 2 characters. It is possible to change each option code

"VALUE" The value of the selected option ( ON/OFF or a combination of 2 letters )

"XXX" Value of the options bytes ( OB1 .. OB7)

"ERR" The last five detected errors; The left most number indicates the most recent error detected.

The MENU UP or MENU DOWN command can be used to select the next/previous option; The MENU LEFT and MENU RIGHT command can be used to change the option value.

Remark: When the option-code RC = OFF, theP+ and the Pkey have the same functions as the MENU UP/DOWN keys while the VOL+ and the VOL- key have the same function as the MENU LEFT/RIGHT keys. It is not possible to change the channel pre-set or to adjust the volume when in SAM/SDM menu when the option RC = OFF.

Using a L9 remote control, option-code RC = ON, the P+, P-, VOL- and VOL+ can be used to change the pre-set and/or to adapt the volume, while the menu-cursor keys are used to select the option and to change its value.

For an extended overview of the option codes see Chapter 8 Options

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5 Fault finding and repair tips

9L9.1A

TV LOCK INSTALLATION BRIGHTNESS COLOUR CONTRAST

AKB VSD TUNER WHITE TONE GEOMETRY AUDIO

llllll llllll llllll

......

SAM

31 31 31

SAMAAABBC X.Y

L90 BBC X.Y

TUNER IF-PLL IF-PLL POS AFA AFB

L90 BBC X.Y

SAM

192

1 1

SAM

A-FM AT STEREO

L90 BBC X.Y SOUND

SAM

232

NORMAL RED

SAM

L90 BBC X.Y

VAM

Figure 5-2 : Service Alignment Mode screens and

structure

CL 86532104_016.eps

030399

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10 L9.1A

5 Fault finding and repair tips

Access to normal user menu

Pressing the "MENU" button on the remote control will enter the normal user menu ( TVlock, installation, brightness, colour and contrast ) while "SAM" remains displayed in top of screen. Pressing the "MENU" key again will return to the last SAM status.

Pressing the "OSD" button of the remote control shows only "SAM" in the top of screen

Access to SDM

Pressing the "DEFAULT" button on the DST

SAM menu control

Menu items (AKB, VSB, Tuner, White tone, Geometry and Sound) can be selected with the MENU Up or MENU DOWN key. Entry into the selected items (sub menus) is done by the MENU LEFT or MENU RIGHT key. The selected item will be highlighted.

With the cursor LEFT/RIGHT keys, it is possible to increase/ decease the value of the selected item.

5.3 The menus and submenus

5.3.1 Tuner sub menu

The tuner sub menu contains the following items:

– – IF_PLL: PLL Alignment for all PAL/SECAM systems – AFW: AFC Window – AGC: AGC take-over point – YD: Default value = 12 ; Do not align – CL: Default value = 4 ; Do not align – AFA – AFB

The items AFA and AFB can not be selected, they are for monitoring purposes only.

The commands MENU UP and MENU DOWN are used to select the next/previous item.

The commands MENU LEFT and MENU RIGHT are used to increase/decreasethe value of the selected item. Thechanged values will be send directly to the related hardware.

The item values are stored in NVM if this sub menu is left.

The commands MENU LEFT and MENU RIGHT are used to increase/decreasethe value of the selected item. Thechanged values will be send directly to the related hardware.

The item values are stored in NVM if this sub menu is left.

The Contrast Plus feature (black stretch) is set to OFF when the white tone submenu is entered.

5.3.3 Audio sub menu

The tuner sub menu contains the following items:

– AF-M: Default value = 232 ; Do not align – AT: Default value = 4 ; Do not align – STEREO: Default value = 15 ; Do not align – DUAL: Default value = 12 ; Do not align

The sound adjustments sub menu is not available in Mono sets.

The presence of an item in the menu is dependent on the selected soundboard (option SB).

The commands MENU UP and MENU DOWN are used to select the next/previous item.

The commands MENU LEFT and MENU RIGHT are used to increase/decreasethe value of the selected item. Thechanged values will be sent directly to the related hardware.

The item values are stored in NVM if this sub menu is left.

5.3.4 Geometry sub menu

The geometry sub menu contains the following items:

– SBL : Service blanking – VSL : Vertical slope – VAM : Vertical amplitude – VSH : Vertical shift – HSH : Horizontal shift – VSC : Vertical S correction – H60 : Default value = 10 ; Do not align – V60 : Default value = 12 ; Do not align – EWC : E-W corner – EWT : E-W trapezium – EWP : E-W parabola – EWW : E-W width

5.3.2 White tone sub menu

The white tone sub menu contains the following items:

– NORMAL RED – NORMAL GREEN – NORMAL BLUE – DELTA COOL RED – DELTA COOL BLUE – DELTA COOL GREEN – DELTA WARM RED – DELTA WARM BLUE – DELTA WARM GREEN

OSD is kept to a minimum in this menu, in order to make white tone alignment possible.

The commands MENU UP and MENU DOWN are used to select the next/previous item.

5.4 Error code buffer and error codes

5.4.1 Error code buffer

The error code buffer contains all errorsdetected since thelast time the buffer was erased. The buffer is written from left to right.

– whenanerroroccursthat is not yet in the error code buffer,

the error is written at the left side and all other errors shift one position to the right

– the error code buffer will be cleared in the following cases:

1. exiting SDM or SAM with the "Standby" command on the remote control

2. transmitting the commands "EXIT" with the DST (RC7150)

3. transmitting the commands "DIAGNOSE-9-9-OK" with the DST.

– By leaving SDM or SAM with the mains switch, the error

buffer is not reset.

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5 Fault finding and repair tips

11L9.1A

Examples:

ERROR: 0 0 0 0 0 : No errors detected

ERROR: 6 0 0 0 0 : Error code 6 is the last and only detected error

ERROR: 5 6 0 0 0 : Error code 6 was first detected and error code 5 is the last detected (newest) error

5.4.2 Error codes

In the case of non-intermittent faults, clear the error buffer before starting the repair to prevent "old" error codes being present. If possible check the entire contents of the error buffers.In some situations an errorcode is only the RESULT of another error code (and not the actual cause).

Note: a fault in the protection detection circuitry can also lead to a protection.

Error 0 = No error

Error 1 = X-ray ( Only for USA sets )

Error 2 = High beam current protection and E/W Horizontal protection

Highbeam protection active; set is switchedto protection; error code 2 is placed in the error buffer; the LED will blink 2 times ( repeatedly ).

As the name implies, the cause of this protection is a too high beam current (bright screen with flyback lines). Check whether the +200V supply to the CRT panel is present. If the voltage is present, the most likely cause is a fault on the CRT panel. DisconnecttheCRTpaneltodetermine the cause. If the +200V voltage is not present, check R3340 ( CRT panel - B ), R3485 and D6485 ( Horizontal Deflection - A2 )

EW protection:

If this protection is active, the causes could be one of the following;

Sound processor does not respond to the micro controller

Error 5 = Bimos start-up error ( POR bit )

Bimos start-up register is corrupted or the I2Cline to the Bimos is always low or no supply at pin 12 of the Bimos). This error is usually detected during start-up and hence will prevent the set from starting up.

Error 6 = Bimos (TDA884x) I2C error

Note that this error may also be reported as a result of error codes 4 (in that case the Bimos might not be the actual problem)

Error 7 = General I2C error. This will occur in the following cases:

• SCL or SDA is shorted to ground

• SCL is shorted to SDA

• SDA or SCL connection at the micro controller is open circuit.

Error 8 = Microprocessor internal RAM error

The micro controller internal RAM test indicated an error of the micro controller internal memory (tested during start-up);

Error 9 = EEPROM Configuration error ( Checksum error ); EEPROM is corrupted.

Error 10 = I2C error EEPROM error. NV memory (EEPROM) does not respond to the micro controller

Error 11 = I2C error PLL tuner. Tuner is corrupted or the I2C line to the Tuner is low or no supply voltage present at pin 9, pin 6 or pin 7 of the tuner.

Error 12 = Black current loop instability protection. The black current could not be stabilised. The possible cause could be a defect in one or moreof the RGB amplifiers,RGB guns or RGB driving signals.

5.5 The "blinking LED" procedure

– horizontal deflection coil 5445 – linearity coil 5457 – S-correction capacitor 2466/2468 – flyback capacitor 2465 – line output stage – short circuit of: – flyback diode 6460 – EW transformer (bridge coil) 5465/5470 or 5463/5471

(version dependent) – S-correction capacitor 2457 – EW power-transistor 7460 or driver-transistor 7461

Error 3 = Vertical / Frame protection

There are no pulses detected at pin 47 of the main microprocessor 7600 ( panel A7 ).

If this protection is active, the causes could be one of the following items;

– IC 7401 is faulty – Open circuit of vertical deflection coil – Vlotaux +11V not present and/or Vlotaux -11V not present – Resistor 3409

Error4 = Sound processor I2C error (MSP3415Dor MSP3435 or BSP3501 )

The contents of the error buffer can also be made visible via the "blinking LED" procedure. This is especially useful when there is no picture. There are two methods of access:

1. When the SDM is entered, the LED will blink thenumber of times, equal to the value of the error codes in the errorbuffer, starting with the first error-code, pause, second error-code, pause etc. (repeatedly).

2. With the DST all error codes in the error buffer can be made visible. Transmit the command: "DIAGNOSE x OK" where x is theposition in the error buffer to be made visible x ranges from 1, (thelast (actual) error) to6 (the first error). TheLEDwill operate in the same way as in point1, butnow for the error code on position x.

Example:

Error code position: 1 2 3 4 5

Error buffer: 8 9 5 0 0

• after entering SDM: blink (8x) - pause - blink (8x) - etc.

• after transmitting "DIAGNOSE- 2- OK" with the DST blink (9x) - pause - blink (9x) - etc.

• after transmitting "DIAGNOSE- 3- OK" with the DST blink(5x) - pause - blink(5x) - etc.

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12 L9.1A

5 Fault finding and repair tips

• after transmitting "DIAGNOSE- 4- OK" with the DST nothing happens

5.6 TROUBLE SHOOTING TIPS

In this paragraph some trouble shooting tips for the deflection and power supply circuitry are described. For detailed diagnostics, use the fault finding tree or use ComPair.

5.6.1 THE DEFLECTION CIRCUIT:

1. Check that the +VBATT ( 140V) is present across 2551 ( A1 POWER SUPPLY ). If the voltage is not present, disconnect coil 5551 ( A1 Power Supply) (Horizontal deflection stage is disconnected). If the voltage is present then the fault might be caused by the deflection circuit. Possible Candidates Are: – Transistor 7460 is faulty – The driver circuit around transistor 7461 is faulty – No horizontal drive signal coming from the BIMOS

7250-D pin 40 ( A4 - Synchronisation )

2. Note: If the Collector of 7460 is shorted to the Emitter, a tripping noise will be heard from the power supply circuit.

3. To determine whether the fault is present in the horizontal deflection circuit or in the E/W circuit ( A2 - Horizontal Deflection ), de-solder jumper 9465 and insert a jumper into position number 9461. This disables the E/W protection.Ifthe basic deflection stage now works correctly ( parabolic picture) then the fault is present in the E/W circuit. If there is still no horizontal deflection, then the fault is present in the basic deflection circuitry.

4. Also don't forget the protection circuits in the line output stage. If any of these circuits are activated, the setwill shut down. Depending on the protection, the led will blink according to the fault defined. In order to determine which protection circuit is active, isolationof each separate circuit is necessary. These protection circuits are: – High beam current protection ( LED blinks repetitively

2 times ) - CRT panel ( B )

– E/W Horizontal protection ( LED blinks repetitively 2

times ) - Horizontal deflection ( A2 )

– Vertical protection ( LED blinks repetitively 3 times ) -

Vertical deflection ( A3 )

5.6.2 THE POWER SUPPLY

5.7 Customer Service Mode (CSM)

All L9.1 sets are equipped with the "Customer Service Mode" (CSM). CSM is a special service mode that can be activated and deactivated by the customer, following a request from the service technician/dealer perhaps during a telephone conversation to identify the status of the set. This CSM is a 'read only' mode, therefore modifications or changes while the set is in this mode are not possible.

Entering the Customer Service Mode. The Customer Service Mode can be switched on by pressing simultaneously the button (MUTE) on the remote control and any key on the control buttons (P+, P-, VOL +, VOL -) on the TV for at least 4 seconds.

When the CSM is activated:

• picture and sound settings are set to nominal levels

• "Service unfriendly modes" are ignored

Exit the Customer Service Mode.

The Customer Service Mode will switch off after:

– pressing any key on the remote control handset (except

"P+" or "P-")

– switching off the TV set with the mains switch.

All settings that were changed when CSM was activated are set back to the initial values

5.7.1 The Customer Service Mode information screen

The following information is displayed on screen:

• Line number for every line (to make CSM language independent)

• Operating hours

• Software version L90BBC X.Y)

• Text "CSM" on the first line

• Error buffer contents

• Option code information

• Configuration information

• Service unfriendly modes

To trouble shoot the L9 SMPS, first check the Vaux voltage on C2561. If this voltage is not present, check fuse F1572 and D6560.IfF1572orD6560is not open circuit, the problem might be caused on the primary side of the switching supply. Check theoutputofthe bridge rectifier on the C2508 for approximately 300V DC. If this voltage is missing, check the bridge rectifier 6505 and the fuse 1500. If fuse F1500 is found to be open circuit, check MOSFET 7518 to make sure that there is no short circuit present and check R3518. If the 300V DC is present on C2508, check for a start-up voltage of approx. 13V on pin 1 of IC7520. If no start-up voltage is present, check if R3510 is open; zener 6510 is a short-circuit. It is necessary to have a feedback signal from the hot primary side of switch modetransformerT5545at pin 8 and pin 9 for the power supply to oscillate. If this start-up voltage ispresent on pin 1 of IC7520 and the supply is not oscillating, check R3529 and D6540.

Check for a drive signal at the gate of MOSFET 7518, square wave signal - P2. Check pin 3 of IC7520, R3525 and D6514

To determined whether OVP is active, check whether Vaux is present at C2561.

1 HHHH L90BBC-X.Y CSM 2 CODES xx xx xx xx xx 3 OP xxx xxx xxx xxx xxx xxx xxx 4 SYS: xxxxxxxxxxx 5 NOT TUNED 6 TIMER 7 LOCKED 8 (HOSPITAL) (HOTEL) 9 VOL LIM <value>

CL 86532104_014.eps

080299

Figure 5-3 : Screen lay-out Customer Service Mode

SYS:xxxxxx = xxxxxx is the SYSTEMTHAT IS SET FOR THIS PRESET

NOT TUNED = no ident signal present

TIMER = (SLEEP) TIMER is activated

LOCKED = Channel/preset locked via parental lock, child lock

Page 13

5 Fault finding and repair tips

13L9.1A

HOTEL = HOTEL mode activated; HOSPITAL = HOSPITAL mode activated

VOL LIM > = Volume limiter activated and set to >

5.7.2 Exit

Any key (RC or local keyboard) except "channel up" / "channel down" (standby switched to standby, mains OFF switches set off, other keys switch to normal operation)

5.8 ComPair

5.8.1 Introduction

ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further developmenton the DST service remote control allowingfaster and more accurate diagnostics. ComPair has three big advantages:

• ComPair helps you to quickly get an understanding how to repair the L9.1A in short time by guiding you step by step through the repair procedures.

• ComPair allows very detailed diagnostics (on I2C level) and is therefore capable of accurately indicating problem areas. You do not have to know anything about I2C commands yourself; ComPair takes care of this.

• ComPair speeds up the repair time since it can automaticallycommunicatewiththe L9.1A (when the micro processor is working) and all repair information is directly available. When ComPair is installed together with the SearchMan L9.1A electronic manual, schematics and PCBs are only a mouse-click away.

ComPair consists of a Windows based fault finding program and an interface box between PC and the (defective) product. The ComPair interface box is connected to the PC via a serial or RS232 cable. In case of the L9.1A chassis, the ComPair interface box and the L9 communicate via an I2C cable (bidirectional) and via infra red communication (uni-directional; from ComPair interface box to L9.1A)

The ComPair fault finding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in 2 ways:

1. Communication to the television (automatic)

2. Asking questions to you (manually)

ComPair combines this information with the repair information in its database to find out how to repair the L9.1A.

Automatic information gathering

Reading out the error buffer, ComPair can automatically read out the contents of the entire error buffer.

Diagnosis on I2C level. ComPair can accessthe I2C busof the television. ComPair can send and receive I2C commands to themicrocontroller of the television. In this wayit ispossible for ComPair to communicate (read and write) to devices on the I2C busses of the L9.1A.

Manual information gathering

Automatic diagnosis is only possible if the micro controller of the television is working correctly and only to a certain extend. When this is not the case, ComPair will guide you through the fault finding tree by asking you questions and showing you examples. You can answer by clicking on a link (e.g. text or an waveform pictures) that will bring you to the next step in the faultfinding process.

A question could be: Do you see snow? (Click on the correct answer)

YES / NO

An example can be: Measure testpoint I7 and click on the correct oscillogram you see on the oscilloscope

I7 B7502

1V / div DC

10µs / div

Figure 5-4

By a combination of automatic diagnostics and an interactive question/answer procedure, ComPair will enable you to find most problems in a fast and effective way.

Additional features

Beside fault finding, ComPair provides some additional features like:

• Uploading/downloading of presets

• Managing of preset lists

• Emulation of the Dealer Service Tool

SearchMan ( Electronic Service Manual )

If both ComPair and SearchMan are installed, all the Schematics and PCBs of the faulty set are available when clicking on the hyper-link of a schematic or a PCB in ComPair

Example: Measure the DC-voltage on capacitor C2568 ( Schematic/Panel ) at the Monocarrier.

Clicking on the PCB hyper-link, automatically shows the PCB with a high-lighted capacitor C2568. Clicking on the schematic hyper-link, automatically shows the position of a high-lighted capacitor at the schematic.

5.8.2 Connecting the ComPair interface

The ComPair Browser software should be installed and setup before connecting ComPair to the L9.1A. (See the ComPair Browser Quick Reference Card for installation instructions.)

1. ConnecttheRS232interfacecable to a free serial (COMM) port on the PC and the ComPair interface PC connector (connector marked with "PC").

2. Place the ComPair interface box straight in front of the television with the infrared window (marked "IR") directed to the television LED. The distance between ComPair interface and television should be between 0.3 and 0.6 meter. (Note: make sure that (also) in the service position, the ComPair interface infra red window is pointed to the standby LED of the television set (no objects should block the infra red beam)

3. Connect the mains adapter to the connector marked "POWER 9V DC" on the ComPair interface

4. Switch the ComPair interface OFF

5. Switch the television set OFF with the mains switch

6. Remove the rear cover of the television set

7. Connect the interface cable (4822 727 21641) to the connector on the rear side of the ComPair interface that is marked "I2C" (See Figure 5.6)

Page 14

14 L9.1A

5 Fault finding and repair tips

8. Connect the other end of the interface cable to the ComPair connector on the monocarrier (see figure 5.7)

9. Plug the mains adapter in the mains outlet and switch ON the interface. The green and red LEDs light up together. The red LED extinguishes after approx. 1 second (the green LED remains lit).

10. Start-up ComPair and select "File" menu, "Open...:; select "L9.1A Fault finding" and click "OK"

11. Click on the > icon to switch ON the communication mode (the red LED on the ComPair interface wil light up)

12. Switch on the television set with the mains switch

13. When the set is in standby. Click on "Start-up in ComPair mode from standby" in the ComPair L9.1A fault finding tree, otherwise continue.

Figure 5-5

• ComPair interface (excluding transformer): 4822 727 21631

• ComPair transformer (continental) Europe: 4822 727 21632

• ComPair transformer United Kingdom: 4822 727 21633

• Starterkit ComPair software: 4822 727 21634

• Starterkit SearchMan software: 4822 727 21635

• Starterkit ComPair+SearchMan software: 4822 727 21636

• ComPair CD (update): 4822 727 21637

• SearchMan CD (update): 4822 727 21638

• ComPair interface cable (for L9): 4822 727 21641

COMPAIR

PC VCR I2CPower

Figure 5-6

The set has now started up in ComPair mode. Follow the instruction in the L9.1A fault finding tree to diagnose the set. Note that the OSD works but that the actual user control is disabled

5.8.3 Preset installation

Presets can be installed in 2 ways with the L9.1A.

• Via infra red – only sending TO the television – the rearcover does NOT have to be removed

Click on "File" "Open" and select "TV - use ComPair as DST" to use infra red

• Via cable – sending TO the television and reading FROM the

television

– the rearcover has to be removed

Clickon "File" "Open" and select "L9.1A faultfinding" tousethe cable

9V DC

86532027_003.EPS

050898

0267

TUNER

CL 96532017_001.EPS

Figure 5-7

190299

Presets can be installed via menu "Tools", "Installation", "Presets".

5.9 Ordering ComPair

ComPair order codes:

• Starterkit ComPair+SearchMan software + ComPair interface (excluding transformer): 4822 727 21629

Page 15

8 Alignments

General: the Service Default Mode (SDM) and Service Alignment Mode (SAM) are described in chapter 5.

8.1 Alignment conditions

All electrical adjustments should be performed under the following conditions:

• Supply voltage : 220V - 240V ( 10% ) for 230V sets and 100V - 110V ( 10% ) for 110V sets.

• Warm-up time: 10 minutes

• The voltages and oscillograms are measured in relation to the tuner earth.

• Test probe: Ri > 10MΩ Ci < 2,5 pF.

41L9.1A

• The VG2 adjustment has now been completed; Switch the set to Standby. The values used for the BRIGHTNESSand the CONTRAST-during the alignment, will revert back to their original values.

8.2.2 Focusing

Set the pattern generator (e.g. PM5418) so that the Circle and Small Squares pattern is visible. Connect via the RF input with an RF signal amplitude of 10mv. Adjust focus potentiometer (positioned on the LOT 5445 ) for maximum sharpness of the picture.

8.3 SOFTWARE ADJUSTMENT

8.1.1 Selection of the SDM-menu

– Bytransmitting the "DEFAULT" command with the RC7150

Dealer Service Tool (this works both while the set is in normal operation mode or in the SAM)

– Standard RC sequence 062596 ( within OSD time-out )

– By connecting test-point M25 and M24 together on the

mono-carrier while switching on the set. After switching on the set connection can be removed. ( Caution!! This also overrides all the 5V protections .

8.1.2 Selection of the SAM-menu

– By transmitting the "ALIGN" command with the RC7150

Dealer Service Tool

– By pressing the "CHANNEL DOWN" and "VOLUME

DOWN" key on the local keyboard simultaneously when the set is in SDM

– Standard RC sequence 062596 ( within OSD time-out )

OSD

– By connecting together test-points M28 and M29 on the

mono-carrier while switching on the set. After switching on the set the short-circuit can be removed. ( Caution!! Overrides 5V protections ).

8.2 Electrical Alignments

8.2.1 VG2

• Use a pattern generator to display a blank raster.

• Program the pattern generator with a frequency of 475.25 MHz for PAL/SECAM or 61.25 MHz for NTSC.

• Switch on the TV set.

• Select the SDM-MENU. The tuner is set to a frequency of

475.25 MHz for PAL/SECAM or 61.25 MHz for NTSC.

• Select the" SAM-MENU".

• Press the "MENU" key on the RC to leave the SAM-MENU and go to the normal user menu ( "SAM" remains displayed at the top of the screen). Select with the MENU UP/DOWN command the sub-menu BRIGHTNESS. Change the default value from 31 to 50 with the MENU LEFT/RIGHT keys. Select the CONTRAST sub-menu and change the value from 31 to 0.

• Leave the normal user menu to return to the SAM-MENU, by pressing the MENU key on the RC.

• Select sub-menu VSB and change thevalue from 0 to 1 by pressing the MENU LEFT key. CAUTION!! Depending on the position of the VG2 potentiometer, the raster will turn completely black because the Vertical deflection stage has been disabled.

• Adjust with VG2 potentiometer (located on the LOT 5445) so that the blue line in the middle of the screen is only just visible.

8.3.1 Geometry adjustments

• Set the pattern generator (e.g. PM5418) so that the Circle and Small Squares pattern is visible. Use an R.F frequency of 475.25 MHz for PAL/SECAMand connect the generator to the RF input. Use a signal amplitude of 10mV, France select L'-signal.

• First enter the SDM mode to set the tuner at 475.25 MHz.

• Enter the SAM mode andthen select GEOMETRY with the up/down keys buttons on the RC, the respective items can now be selected. Use the left/right buttons to adjust the selected items so that the correct the picture geometry is achieved.

Vertical Amplitude and Position

• Select Vertical Slope "VSL"and shift the testpattern to the top. The text VSL and its value should be above the upper half of the screen

• Select Service Blanking "SBL" and set it to 1. The lower half of the picture will be blanked.

• Press the up button once to select Vertical Slope "VSL". Now align "VSL" to start the blanking exactly at the horizontal white line at the centre of the test circle. "VSL" has the correct value now and should not be adjusted any further.

• Press the down button once to select "SBL" and set it back to 0. The full picture now reappears.

• Now select Vertical Amplitude "VAM" and align the picture height to the top of the screen, so that the top horizontal linejust disappears. This corresponds with an overscan of approx. 6%.

• Select Vertical Shift "VSH" and align for vertical centring of the picture on the screen.

• Repeat the last two steps if necessary.

Select Vertical S-correction "VSC" to align the top/bottom squares till they have the same size as the squares in the middle of the screen.

Page 16

42 L9.1A

8 Alignments

TV LOCK INSTALLATION BRIGHTNESS COLOUR CONTRAST

AKB VSD TUNER WHITE TONE GEOMETRY AUDIO

llllll llllll llllll

......

SAM

31 31 31

SAMAAABBC X.Y

L90 BBC X.Y

TUNER IF-PLL IF-PLL POS AFA AFB

L90 BBC X.Y

SAM

192

1 1

SAM

A-FM AT STEREO

L90 BBC X.Y SOUND

SAM

232

NORMAL RED

SAM

L90 BBC X.Y

VAM

Figure 8-1 : Service Alignment Mode screens and

structure

CL 86532104_016.eps

030399

Page 17

8 Alignments

43L9.1A

Horizontal Amplitude and Phase

• Select Horizontal Shift "HSH" to horizontally centre the picture on the screen

For sets with E/W correction follow the instructions below:

• Select East-West Width "EWW" and align the picture with substantial over scan.

• Select East-West Trapezium "EWT" and align for a rectangle if necessary

• Select East-West Parabola "EWP" and align for straight vertical lines.

• Select East-West Corner "EWC" and align the corners.

• Repeat if necessary.

• Option code "H60" and "V60" do not need any alignment. Default value H60 and V60 = 10.

To return to the main SAM-menu , press the MENU key on the RC.

To exit the SAM-menu and store the alignments in the NVM, press the STANDBY-key on the RC.

8.3.2 AGC

Set pattern generator (e.g. PM5418) with colour bar pattern and connect to aerial input with RF signal amplitude - 10mV and set frequency for PAL/SECAM to 475.25 MHz. For France select the L'-signal.

• Select the" SAM-MENU".

• Select the TUNER sub-menu and select the AFW option. Set this to a value of 80kHz.

• Select the AGC subsub-menu

• Connect a DC multi-meter to pin 1 of the tuner IC 1000.

• Adjusting the AGC until the voltage at pin 1 of the tuner is

1.0V +/- 0.1V.

• The value can be incremented or decremented by pressing the right/left MENU-button on the RC.

• Switch the set to standby.

8.3.5 White tone

• Connect a pattern generator (e.g. PM5418) and set it to colour bar and circle pattern.

• Set the frequency and output for PAL 475.25MHz with RF signal amplitude of 10mv and connectto tuner (aerial) input

• Enter the SAM -MENU.

• Enter the WHITE TONE menu and then select either NORMAL, DELTAWARM, or DELTACOOL depending on the item which needs to be aligned. Only one of the three items (R, G or B) will be displayed on the screen.

The default values for the colour temperature as displayed in the table below:

NORMAL 10500K R = 40 G = 40 B = 40 (DELTA)COOL 14000K R = -2 G = 0 B = 6 (DELTA)WARM 8200K R = 2 G = 0 B = -7

Switch the set to standby.

8.3.6 Audio

NO ADJUSTMENTS NEEDED FOR SOUND.

The default values for the audio alignments, with option code ND for the soundboard option "SB" - the most extended version, are displayed in the table below:

AUDIO Alignment Options A-FM 232 AT 4 STEREO 15

8.3.3 IF-PLL

Connect a pattern generator (e.g. PM5418) and select colour bar pattern and connect to the aerial input with RF signal amplitude of 10mV and set frequency to 475.25 MHz for PAL/ SECAM or 61.25 MHz for NTSC.

• Select the " SAM-MENU".

• Select at the TUNER sub-menu and set the AFW at its lowest value.

For the IF-PLL option the following should be done:

• Select at the TUNER menu the IF-PLL subsubmenu

• Adjust the IF-PLL value until AFA becomes "1" and AFB alternates between "0" and "1"

• Switch the set to Standby.

8.3.4 Tuner options CL and YD

NO ADJUSTMENTS NEEDED FOR THESE ALIGNMENTS. The default values for these option codes are:

– CL : 4 – YD : 12

DUAL 15

The presence of an item in the menu is dependent on the selected soundboard (option SB).

8.4 Options

Options are used to control the presence / absence of certain features and hardware. There are two ways to change the option settings. The various option configurations and the descriptions of the two character-codes are explained below.

Changing a single option:

A single option can be selected with the MENU UP/DOWN keys and its setting can be changed with the MENU LEFT/ RIGHT keys.

Changing multiple options by changing option byte values:

Option bytes make it possible to align very all the options. An optionbyte represents a number of different options. All options applicableto the L9 are controlled via 7optionbytes. Select the option byte (OB1, OB2, OB3, OB4, OB5,OB6 or OB7) and key in the new value.

Changes in the options and option bytes settings are saved when the set is switched to standby. Some changes will only

Page 18

44 L9.1A

8 Alignments

take affect after the set has been switched OFF and ON with the mains switch (cold start).

The following options in SDM can be identified:

OP OPTION (ON=enabled / present). Explanation /

Remark

AC Alternate Channel. Alternate channel function

(SWAP between last presets) enabled AM Animated Menu 2X External 2AS. Autostart up/Micro controller start up

Default value is On (ON = start up via micro

controller, OFF = auto start up BIMOS BM Blue mute (ON = enabled). Enabled: blue mute

background in case of no video ident/poor signal

conditionsBSBIMOS standby mode Default value =

ON BL Balance . Enabled: menu item BALANCE available BT Bass/Treble Control. Menu controls for BASS and

TREBLE available when enabled CH Child lock. Menu item Child lock when enabled CK Clock (Volatile). Clock function available when

enabled CL Child Lock. Menu item Child Lock/Parental control

when enabled CP Contrast Plus. Menu item Contrast Plus available

when enabled CX 16:9 Compress. Menu item 16:9 compress when

enabled DM Demo Mode Demonstration of TV functions on

screen when enabled DU Dual I/II. Possibility of language selection when

enabled EW East-West Control. East-West Alignment in SAM

GEOMETRY menu available when enabled EX 4:3 Expand. 4:3 expand mode available when

enabled FQ Frequency display. Frequency displayed when

enabled HS Hospital Mode. Possibilityto block the local keyboard

when enabled IS Incredible Surround. Incredible surround function

available when enabled MS Message . Menu item Message when enabled NI NoIdent Auto Standby .Setswitches to standby after

10min. when NI enabled NR Noise Reduction . Menu item Noise Reduction when

enabled

SA Spatial (Incredible stereo). Menu item Incredible

Stereo when enabled

SB Sound Board (Set the sound hardware configuration)

MA = Mono All 60= Mono All with stereo playback MM= Multi Mono IT = 2CS stereo processor MSP3400 (German or

Korean stereo) NB = Nicam/2CS processor MSP3410B ND = Nicam/2CS processor MSP3410D

SP SmartPicture. Smart picture command is processed

when enabled

SS Smart Sound. Smart sound command is processed

when enabled

ST Sound systems supported

SS = BG, I, DK, M AD = BG/I, BG/DK, I/DK

SY Systems supported

SS = Single system AD = AP Dual AM = AP-Multi AF = AP-Full Multi

TN Tuner (OFF: Philips tuner, ON: ALPS tuner) Default

value = OFF

TW Channel Select Time Window (OFF: 2 seconds, ON:

5 seconds) Time interval for entering a second digit for channel selection

UB Ultra Bass. Ultra bass function available when

enabled

VI Virgin ModeOSD at very first installation when

enabled

(*)Remark: When the option RC= OFF, the P+ and the P- key on the remote control have the same functions as the MENU UP/DOWN keys while the VOL+ and the VOL- key have the same function as the MENU LEFT/RIGHT keys. When RC=OFF, it is not possible to change the channel pre set or to adjust the volume in SAM/SDM with the remote control.

RC = OFF for use with L7-based remote control (only cursor keys). RC = ON for use with A8-based remote control (cursor keys, P+/P- and Volume+/Volume-).

8.5 Option bits/bytes

OB1 bits 8, 7, ..., 1: DP, FQ, AM, HS, HT, DM, GM, VI

OB2 bits 8, 7, ..., 1: CK, CL, AT, CI, FV, HC, SS, SP

RC (*) Separate preset/volume control on remote control

(ON = separate control (A8 RC); OFF = combined control (L7 RC))See note below table. Default value is OFF

OB3 bits 8, 7, ..., 1: RC, CH, (res), (res), TW, AC, SF, VM

OB4 bits 8, 7, ..., 1: TN, FT, XT, 2X, XS, CD, BM, NI

OB5 bits 8, 7, ..., 1: EX, CX, NR, CP, CT, EW, BS, AS

Page 19

8 Alignments

OB6 bits 8, 7, ..., 1: BT, IS, VL, DV, UB, LV, DU, AO

OB7 bits 8, 7, ..., 1: ST, ST, SB, SB, SB, SY, SY, SY

An option byte value is calculated in the following way:

value "option bit 1" x 1 =

value "option bit 2" x 2 =

value "option bit 3" x 4 =

value "option bit 4" x 8 =

value "option bit 5" x 16 =

value "option bit 6" x 32 =

value "option bit 7" x 64 =

value "option bit 8" x 128 =

Total : value "option byte" =

45L9.1A

Page 20

46 L9.1A

9 Circuit description new circuits

Power supply (diagram A1)

9 Circuit description new circuits

9.1 Introduction

9.1.1 General

The switch mode power supply (SMPS) is mains isolated. The control IC7520 (MC44603A) produces pulses for driving FET

7518. Power supply regulation is achieved by using duty cycle control at a fixed frequency of nominal 40 kHz in normal operation. In stand-by, slow-start and overload situations the SMPS runs at frequencies other than 40 kHz.

Basic characteristics of this SMPS :

– Mains Isolated flyback Converter type – Input range : 90 - 276 Volts AC – Secondary Sensing by Opto-coupler – IC7520 is Featured with Slow-Start circuitry – Protection Circuits – Degaussing circuit

9.1.2 Output voltages

• Audio Supply ( +16.5V ) for the AUDIO AMPLIFIER ( Diagram A12 )

• Mains Supply ( +140V ) for the HORIZONTAL DEFLECTION stage (A2) and the CRT discharge circuit (A3)

• Vaux ( +11.3V ) for the Video IF (A5), Video processing (A6) and Control circuit (A7)

9.1.3 The switching periods of TS7518

The power supply duty cycle is dependent on the T-on of FET

7518.The FET is driven by pin 3of IC7520.ThisIC controls the

secondary voltage (VBATT via opto-coupler 7581 and regulator 7570. The switching period of TS7518 can be divided into three main phases: Duty cycle T-on, T-off and T-dead.

• During T-on, FET 7518 conducts.

• Energyis stored in the primarywinding (2-5)of transformer T5545 by using a linear increasing primary current. The slope depends on the rectified mains-voltage present across C2508. The T-on period is varied to provide regulation of the drive waveform at pin 3 of IC7520. By controlling the duty cycle of the SMPS in this way the (VBATT is controlled.

• During T-off, FET 7518 is switched off and therefore does not conduct. The energy is now transferred to the secondary side of the transformer and then supplied to the load via the secondary diodes (D6550, D6560 and D6570,D6590). The current through the secondary side of the transformer decreases until it reaches zero.

• During T-dead FET 7518 does not conduct .The voltage at the drain of the FET decays and eventually reaches the input voltage of approximately 300V.

9.2 Primary side

9.2.1 Mains input and degaussing

initial power on. The PTC will then heat up due to the high current involved and becomes high-ohmic which reduces the degaussing-current. During normal operation, the degaussing current is zero, because relay 1580 is open due to the absence of the (P - Reset signal.

9.2.2 Start up and take over

– Start-up : The start-up circuitry consisting of 3510, 3530

and 3529 use the voltage coming from the 230V AC mains to start-up IC7520 via the supply pin 1. The output drive waveform (pin 3) is blocked by using the ICs internal logic until the voltage on pin 1 reaches 14.5 Volts however with less than 14.5 volts on Pin 1 the IC only consumes 0.3mA. Once pin 1 reaches the 14.5 Volts threshold, IC7520 will start up (FET 7518 will conduct) and pin 1 sinks a typical supply current of about 17 mA. This supply current cannot be delivered by the start-up circuitry, so a take-over circuit must be present. If take-over does not occur then the voltage on pin 1 will decrease below 9V and IC7520 will switch off. The supply begins a new Start-up cycle, seetop of this paragraph. This cycle will repeat itself and can be noticed by an audible hick-up sounding noise.

– Take for IC7520: During start-up a voltage across winding

8- 9 is gradually builtup. At the moment thevoltage across winding 8 - 9 reaches approx. (14.5 Volts, D6540 start conducting and takes over the supply voltage Vpin 1 of IC7520 (take over current is approx. 17mA).

Note: This power supply is a SMPS (= Switched Mode Power Supply) and not a SOPS (= Self Oscillating Power Supply).

9.3 Control circuitry

9.3.1 IC7520 control mechanisms

IC7520 controls the T-on time of FET 7518 in four different ways:

• "Secondary-output-sensing"controls the secondary output voltages via the feedback voltage pin 14

• "Primary current sensing" control due to the mains voltage via the current sense voltage pin 7

• "Demagnetization control" prevents the transformer T5545 from going into saturation via the so-called "DEMAG" function at pin 8

• Mains voltage control via R3514 and R3516

9.3.2 Secondary voltage sensing (pin 14 of IC7520)

When the output voltage +VBATT increases (due to a reduction in the load ) the current through the led in the optocoupler 7581 will increase due to the fact that the seriesresistor in regulator 7570 decreases. An increase in optocoupler led-current (7581) results in a decrease in the Vce of transistor 7581, therefore the voltage across capacitor 2576 increases. This will reduce the on-time of FET 7518 due to an increase of the voltage present on pin 14.

In the event of an increase of the load (decrease of output voltage +VBATT ), the control circuit will work in the opposite way to the explanation above.

– Mains voltage: this voltage is filtered by L5500 and L5502,

rectified by a diode bridge rectifier 6505 and then smoothed by C2508 which provides a DC input voltage of 300V DC for an ac input voltage of 230V.

– Degaussing : R3503 is a PTC. When switching "on" the

set,thePTCiscold and has a low-ohmic value. Relay 1580 is activated while the Reset signal, coming from the (P is present. This allows a very high degaussing current at

9.3.3 Primary sensing (pin 7 of IC7520)

The current sense voltage at pin 7 is used to measure the primary current through FET7518. The primary current is converted into a voltage by R3518. R3514. 3516. couples a partof the main voltage to the samepin7 of IC 7520 by dividing this sample of the voltage.

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9 Circuit description new circuits

47L9.1A

Hencethehighertheinputvoltagethemoretheprimarycurrent is limited. In this way the maximum output power of the powersupply is limited.

9.3.4 Demagnetization control (pin 8 of IC7520)

Winding 8 - 9 has the same polarity as the secondary winding that supplies the load. WhenFET 7518 is turned offthe voltage at winding 9 becomes positive. The power supply transfers the stored energy at the secondary side. Until the transformer is demagnetized the voltage on the winding remains positive. At the moment that the energy is fully transferred to the load, the voltage at pin 9 of the transformer becomes negative. Additionally with a certain dead time the voltage at control pin 8 of IC 7520 also drops below zero which releases the output buffer (pin 3) and a new cycle starts.

9.3.5 Peak current limiting

An internal clamp at pin 7 allows peak current limiting to be achieved . This pin can never exceed 1V DC and so the maximum primary current through FET 7518, and also the maximum output power is determined. In case of an output being short-circuited or loaded excessively, the I-prim becomes too high which is detected by pin 7. As a result the primary current is limited to its maximum value and the secondary voltages will drop. The voltage at pin 1, which is coupled with the output voltage, will also drop. When the voltage at pin 1 drops below the 9V, IC7520 will stop functioning and the output voltage will rapidly drop to zero.

Via start-up circuitry 3510, 3530 and 3529 the voltage originating from the 230V AC mains is used to start-up IC7520 viathe supply pin 1. Assoon as this voltage reachesthe 14.5V, IC7520 starts functioning. If the load is still too much or the output is short-circuited the same cycle willhappen again. This fault condition can be clearly identified as the power supply will be loudly tripping.

9.3.6 Slow-start

As soon as Vpin 1 > 14.5V the SMPS will start-up. During the slow-start procedure both the frequency and the duty cycle will be built up slowly. The duty cycle will initially slowly increase commencing with the absolute lowest possible duty cycle. The maximum duty cycle is determined by C2530 at pin 11 of IC7520, as C2530 is uncharged at start-up.

9.3.7 Standby mode

In standby mode the SMPS switches to the so-called "reduced frequencymode" and runs at about20 kHz. During standby the SMPS only has to deliver a minimal level of output power. The minimal load threshold level is determined by R3532 at pin 12. In the L9 chassis the SMPS does not have a burst mode in standbybut only a reduced frequency mode ofabout20 kHz as stated above. In normal operation mode the internal oscillator is around 40 kHz. This frequency is controlled by C2531 at pin 10 of IC7520 and by R3537 at pin 16 of IC7520. In standby modethe frequency of operation isdetermined byR3536 at pin 15 of IC7520.

9.3.8 Protections

Over voltage protection of the secondary voltages.

After start-up the supply voltage pin 1 will be "taken over" by winding8 - 9. Pin1 of IC 7520 isused to detect an over voltage situation on the secondary side of the transformer. If this voltage exceeds 17V (typically the output buffer is disabled, and IC 7520 goes into over voltage protection and a complete

restart sequence is required. Check in this case IC7520, IC7581 and the secondary voltage +VBATT ( +140V ).

REMARK: In the event of the over voltage situation remaining present, the SMPS will go in protection, start up cycle, protection, etc. The standby led on the front of the set starts flashing.

Under voltage protection of the secondary voltages

If the supply voltage at pin 1 of IC 7520 drops below 9V because of a short-circuit or excessive load, the drive pulse present at pin 3 will be disabled and IC7520 will switch off the complete SMPS. Capacitor C2450 is charged up via start-up resistors 3510, 3530 and 3529, however once the voltage exceeds 14.5V start up threshold, the SMPS will once again commence a re start cycle.

Intheeventof the under voltage situation remaining, the SMPS will again go in protection mode, startup cycle, protection, etc. and so the cycle repeats. This effect is highly audible.

9.4 Audio processing

The following systems are available:

• BASIC : MONO/AV STEREO ( M,BG, I and DK : single or dual system )

• NICAM: FM STEREO / NICAM L/L',NICAM I, NICAM B/G, NICAM DK

• 2CS: FM STEREO / FM MONO ( allstandards4.5, 5.5, 6.5 MHz )

• BTSC : MONO/STEREO/STEREO-AP

MONO/AV STEREO, BTSC DBX incorporating 2CS (two carrierstereo) use a TDA8844/43 BIMOS device(built-in Mono FM Demodulator circuit).

NICAMLL',/BG, /I versions use a TDA8845 BIMOS (AMsound demodulator & QSS-IF circuit ; built-in)

The Audio Module incorporates for each system a different multi digital sound processor.

• MONO /AV STEREO: BSP3501 & TDA884x

• NICAM / 2CS : MSP3415D

• BTSC : MSP3535G

These IC's have an incorporate digital audio processing for volume, bass, treble, balance, mute, spatial sound, incredible sound, smart sound andsource selection (SIF-signal, EXT1 or EXT2).

9.4.1 MONO / AV STEREO

This set does have the digital sound processor BSP3501, IC7833.

MONO/AV STEREO

7250-A

TDA 8844

AUDIO OUT

7833

BSP3501

52 53 49 50

EXT. 1 AUDIO

EXT. 2 AUDIO

28 29 36

LEFT OUT

RIGHT OUT

REAR

Figure 9-1: "MONO / AV STEREO SETS"

7952/7951 3 5

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48 L9.1A

9 Circuit description new circuits

The video IF output is present at pin 11 of the tuner 1000. This signalgoes through a sound SAW filter and isfed tothe BIMOS via pins 48 and 49, where the signal is demodulated. . At pin 6 of BIMOS IC 7250-A, the CVBS + SIF signal is fed to another SAW filter. Signal P3Duall/Mono selects either SAW filter 1001 or SAW filter 1002.

The system hardware configuration, option code SY, is set at AD - Dual Mono for a Dual configuration, while option code SY is set at SS for the Mono configuration ( BG,I, DK, M ). Via P3Duall/Mono, a signal coming from the Micro-processor IC7600, it possible to switch between two Mono configurations (BG/DK or BG/I or DK/I).

This signal goes back to pin 1 of the BIMOS , for further demodulation. The demodulated FM signal or the REAR I/O audiosignal,ExtAudioMonoatpin 2, is switched by the BIMOS and is present at pin 15.

The signal at pin 15 is fed to pin 55 of IC 7833 - BSP3501C - at panel A10 . IC 7833performs source selection as well as audio processing such as volume, bas, treble, balance, tone control and spatial stereo. The audio output from IC 7833, pin 28 and pin 29, is fed to the power amplifier IC 7950 or IC7951. Pin 36 and 37 pass the same selected signal through to the Audiocinches.

Signal P10MuteVolume enables the output of the sound amplifier.

9.4.2 NICAM

Thishigh quality digital audio formatis usedin Eastern Europe, France, and UK, while NICAM LL' is being used in France. The figure below shows the AUDIO path for NICAM..

P2LLP/MTRAP

1000

7701 7702

1003

124

1204

NICAM

7250-A

4548

VIF

258

TDA 8845

55 56

FILTER

SELECTION

REAR

EXT 1 AUDIO

MSP 3415

36 37

EXT 2 AUDIO

7833

9.4.3 2CS

This analogue F.M stereo audio standard is predominately used in Germany and The Netherlands. It is used on some cable television networks. The diagram below indicates the AUDIO path for 2CS.

The CVBS + SIF signals present at pin 6 from BIMOS, TDA8844-, are passed through a high pass filter and are then fed back into pin 58 of IC 7833 (MSP3415D) for further demodulation. All variants of 2CS are demodulated in this IC.

2CS

7952/7951 3 5

7250-A

TDA 8844

(CVBS+SIF)

7833

MSP3415

52 53 49 50

EXT. 1 AUDIO

EXT. 2 AUDIO

28 29 36

LEFT OUT

RIGHT OUT

REAR

CL 86532104_071.eps

300399

Figure 9-3: "2CS"

Audio signals coming from the rear I/O panel are connected to pin 49/50 of IC7833 for the Ext1Audio signals, while pin 52/53 of IC 7833 are used for the Ext2Audio signals. IC 7833 performs source selection as well as audio processing such as volume, balance, tone control, mute, spatial stereo, incredible surround sound and SMART sound. The audio output from IC 7833, pin 28 and pin 29, is fed to the power amplifier IC 7950 or IC7951. Pin 36 and 37 pass the same selected signal through to the audio-cinches. Signal P10MuteVolume enables the output of the sound amplifier.

7950

R-OUT

L-OUT

TDA 7057

7951

TDA 7053

L+/L

R+/R

9.4.4 BTSC DBX

The CVBS + SIF signals from the BIMOS are passed through a high pass filter and are then fed back into pin 58 of IC 7833 (MSP3435G)for further demodulation. This signalis present at pin 2 of BIMOS -TDA8845- for NICAML and present at pin 6 of BIMOS - TDA8844 - for all other NICAM/2CS applications.

CL 86532104_010.eps

080299

Figure 9-2: "NICAM"

The video IF output is present at pin 11 of the tuner. Signal P2LlpMono is used to switch between NICAM L or L'. Depending on the required Tuner frequency band, the appropriate SAW filter is selected. The filtered signal is fed to SIF (sound I.F amplifier) input pin 55 and 56 of the BIMOS TDA8845. Output pin 15 - AM Audio output-, is connected to ground via jumper 4002.

The QSS signal at pin 2 passes throughthe selected high pass filter, depending on the system used, and is fed to sound processor 7833. Audio signals coming from the rear I/O panel areconnectedtopin 49/50 of IC7833 for the Ext1Audio signals, while pin 52/53 of IC 7833 are used for the Ext2 Audio signals.

The QSS-signal, Ext1Audio or Ext2Audio is switchedinternally tothe output pins 28 and 29of the sound processor. Pin 36and 37 pass the same selected signal throughto the audio-cinches.

The audio output of the MSP3415 is fed to the power amplifier IC 7950 or IC7951. Signal P10MuteVolume enablesthe output of the sound amplifier.

BTSC DBX

7250-A

TDA 8844

(CVBS+SIF)

7833

MSP3435

52 53 49 50

EXT. 1 AUDIO

EXT. 2 AUDIO

28 29 36

LEFT OUT

RIGHT OUT

REAR

Figure 9-4: "BTSC DBX"

7952/7951 3 5

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9 Circuit description new circuits

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9.5 Tuner and Video IF (see circuit diagram A5)

9.5.1 Introduction:

In Figure 9.4 a simplified block diagram of the video path is shown. The main item in the block diagram shown in Fig.9.5 is the video processor item 7250. The IC performs the following functions,video IF demodulation, chroma processing and RGB processing. Additionally synchronisation processing, mono IF audio demodulation and audio selection takes place.

IC 7250-4A TDA 8845

56 15

IC 7250-4A TDA 8844

34 5

IF AMPLIFIER

PLL VIDEO DEMO.

AGC

SOUND

AMPL.

AGC

34 5

IF AMPLIFIER

PLL VIDEO DEMO

AGC

PLL-

AUDIO

FM DEMO.

AMPL. MUTE

LIMITER

AFC

VIDEO AMPL.

AFC

VIDEO AMPL.

AFC

VIDEO-

BASEBAND

OUTPUT

QSS MIXER

SOUND

AM DEM.

AFC

VIDEO-

BASEBAND

OUTPUT

OUTPUT VOLUME

CONTROL

7250-4B TDA 8844/45

7250-4C TDA 8844/45

7250-4D TDA 8844/45

VIDEO IDENT

CD MATRIX

SATURATION

CONTROL

+ SKIN TINT

SYNC.

SEPARATOR

VERT. SYNC.

SEPARATOR

Two versions of video processors are used:

• TDA8844 N2 for SW CENELEC BG/DK, CENELEC I NICAM, CENELEC BG NICAM

• TDA8845 N1 for CENELEC BG,LL',I

For a detailed block diagram of the TDA8844/8845 see Figure

9.5.

Y (TO SYNC PART)

LUM.

DELAY

PEAKING

CORING

CHROMA

BANDPASS

RGB

MATRIX

BLACK

STRETCH

RGB1

INPUT

41 42 37

VCO

HORIZONTAL

CONTROL

52514439

PAL/NTSC/

SECAM

DEMODULATOR

169 36353433

IIC BUS

CONTROL

RGB

OUTPUT

CATH.

CALIB.

2223 24 25 26

OUTPUT

VERTICAL

OUTPUT

E/W

OUTPUT

BASE-

BAND

DELAY

LINE

RGB OUTPUT

SYNC

INPUT SELECT Y + CHROMA

PROCESSING

CL 86532104_021.EPS

220299

Figure 9-5 :Bimos

9.5.2 Tuner

The PLL tuner (item 1000) is digitally controlled via the I2Cbus.The tuner is suitable toreceive off-air,S-(cable) and hyper band channels.

Tuner pin description:

• Pin 1: AGC, Automatic gain control voltage input (0.3 -

4.0V)

• Pin 2: VT, tuning voltage input (not connected)

• Pin 3: AS, address select (not connected)

• Pin 4: SCL, IIC-bus serial clock

• Pin 5: SDA, IIC-bus serial data

• Pin 6: not connected

• Pin 7: Vs, PLL supply voltage +5V

• Pin 8: not connected

• Pin 9: Vst, tuning voltage +33V

• Pin 10: ground

• Pin 11: IF, asymmetrical IF output

Note: The +5V supply voltage and the +33V tuning voltage is derived from the line output stage, see diagram A2).

9.5.3 IF band pass filter (SAW FILTER)

Between the tuner output and the video IF input of the video processor the IF band pass filtering take place. Filter 5002 is tuned at 40.4MHz and serves as an extra suppression of the neighbour channel. For the IF band pass filtering SAW filters are used (item 1003 or 1004). 5 Types of SAW filters are used depending of the version of the set.

9.5.4 Video IF

General: Video IF-demodulation is achieved in combination with reference circuit L5006 connected at pin 3 and 4 of IC7250-A. The AGC control for the tuner is applied via pin 54 of IC7250-A. Internally the IC uses the top sync level as a reference for AGC control. The AGC adjustment can be readjusted via the SAM (service alignment menu). C2201 connected to pin 53 determines the time constant of the AGC. The Base band CVBS signal is present at pin 6 of IC7250-A (normal amplitude 3.2Vpp). From here the signal is fed via

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50 L9.1A

9 Circuit description new circuits

transistor7266tothesoundtrap filters and then on to the video source selection circuit.

The main functions of the video IF partare (see also figure 9.5):

• IF- amplifier

• PLL-demodulator

• Video buffer

• AFC

• IF-AGC

• Tuner AGC

9.5.5 IF- amplifier

The IF-amplifier incorporates symmetrical inputs (pins 48 and

49). By using IIC bus control (IFS) the AGC attenuation can be adjusted by up to -20db.

Remark: If the BIMOS is replaced the AGC value should be adjusted as part of the repairprocess. (see software alignment adjustments).

9.5.6 PLL-demodulator

The IF-signal is demodulated with the assistance of the PLL detector. The video IF-demodulator can handle both negative and positively modulated IF signals; selection is achieved via the IIC bus (bit MOD).

9.5.7 Video buffer

The video buffer is present to provide a lowohmic video output with the required signal amplitude. Additionally, it provides protection against (pin 6) the occurrence of noise peaks. The video buffer stage also contains a level shifterand a gain stage for both the positive and negative video modulation formats, so that the correct video amplitude and DC level are always present at pin 6 regardless of the input signal.

9.5.8 Video-IF AGC

An AGC system controls the gain of the IF amplifier such that thevideo output amplitude is constant.The demodulated video signal is supplied, via a low pass filter inside the IC to an AGC detector. External AGC de coupling is provided by capacitor 2201 at pin 53. The AGC detector voltage directly controls the IF amplification stages.

9.5.9 The tuner AGC

Tuner AGC is provided to reduce the tuner gain and thus the tuner output voltage when receiving to strong RF signal. The tuner AGC starts working when the video-IF input reaches a certain input level. This level can be adjusted via the IIC bus. The tuner AGC signal is applied to the tuner via the open collector output pin 54 of the BIMOS.

9.5.10 AFC

The AFC output information is available for search tuning. The AFCoutputisavailable via the I2C bus ( AFA and AFB signals). For alignment purposes it is displayed in the TUNER submenu of the SAM (See chapter 8).

9.6 Video Signal Processing (see circuit diagram A6)

9.6.1 Introduction:

The video signal processing can be divided in the following parts:

• CVBS/Y/C input selection

• Luminance and chrominance signal processing

• PAL/NTSC and SECAM demodulation /Auto system manager

• YUV/RGB processing/ black stretcher

• Second RGB insertion

• RGB processing

• Black current calibration loop

• Beaming current limiting

Above mentioned processing circuits are integrated in the TVprocessor (parts B and C). The surrounding components are for the adaptation of the selected application. The I2C bus is used for defining and controlling the signals.

TDA 8844/8845

OSD/TXT/SCART

RGBFBL

242326

RGB

PROCESSING

+SWITCH

MATRIX

Y U V

CL 86532104_017.eps

3238

160299

SOUND

BPF

SIF

(to sound proc..)

YC/CVBS EXT YC/CVBS EXT YC/CVBS EXT

CVBS_MON

V_PATH1.PPT 20/3/98

SWITCH

TUNER

SOUND

TRAP

CVBS + SIF

CVBS_INT CVBS_EXT

48/49 25

TDA884X

CHROMA

PROCESSING

30 29 28 27 31

Figure 9-6: "Videopath"

9.6.2 CVBS/Y/C selection

The input switches are used for selection of the input signal. Three input signals can be selected:

• Pin 13: terrestrial CVBS input.

• Pin 17: external AV1 input.

• Pin10/11: external AV2-Y, CVBS/C input

Whenpin 11 is in the CVBS input mode thenpin 10 is not used. When pin 11 is in the Y/C input mode then both pins are used and the CHROMA filter in the Y signal path is switched off.

9.6.3 Luminance / Chroma signal processing

Once the signal source has been selected, CHROMA filter calibration is performed. The received colour burst-sub-carrier frequency is used for the calibration. Correspondingly, the CHROMA band-pass filter for PAL/NTSC processing or the cloche filter for SECAM processing is switched on. Pins 34, 35 have the crystals connected to them. These crystals are used for multi-purpose calibration of the burst sub-carrier. The selected luminance signal is then supplied to the Horizontal and Vertical synchronisation processing circuits and to the luminance processing circuits. In the Luminance processing block, the luminance signal is applied to the CHROMA trap. This trap is switched on or off depending upon on the colour burst detection of the CHROMA calibration circuit. Before the luminance signal is applied to pin 28 of the TV-processor the signal is applied to a "peaking" and "coring" circuit. In these

TO CRT

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9 Circuit description new circuits

51L9.1A

circuits the sharpness and noise level of the signal can be influenced via the remote control (control menu in the user menu ).

9.6.4 PAL, NTSC and SECAM demodulation via the Auto system manager

The colour decoder circuit detects whether the signal is a PAL or NTSC signal. The result is made known to the auto system manager. The base-band delay line is activated whena PAL or SECAM signal is detected. For the SECAM colour standard a reference voltage is generated at pin16 of the TV-processor.

Connected at Pin 9 of the TV-processor, is the band-gap decoupling circuit, which consists of (2214,2215). The band-gap circuit provides a very stable and temperature independent reference voltage. It ensures optimal performance of the TVprocessorandis used by almost all functional blocks insidethe processor. The Y signal and the demodulator outputs R-Y and B-Y are present at pin28, 29, 30 ofthe TV-processor. The auto system manager identifies PAL, NTSC and SECAM colour standards and is controllable via the IICbus. Connected on pin 36 of the TV-processor is the LoopFilter for the phase detector Thefilterchosenprovidesanoptimaltransientresponse,which ensures both an optimum for noise bandwidth and colour acquisition time.

9.6.5 YUV / RGB processing/ black stretching

The signal Y, R-Y and B-Y presenton pins 27, 31, 32 of the TVprocessor are used as the input signals forthe colour decoding section of the BiMOS (IC7520-C). The YUVprocessor enables the colour saturation control and also converts the Y, B-Y and B-Y signals to the R, G, B signal format via the colour matrix circuit. The black stretcher circuit , initial stage of the matrix circuit, extends the Grey signal level towards the actual black level. The amount of extension depends upon the difference between actual black level andthe darkest part of theincoming video signal level. This feature is fully integrated. The user can switch this circuit on or off by using the Contrast Plus option in the user menu.

9.6.6 Second RGB insertion

Pins 23, 24, 25 are used as the inputs for the second R, G, B signals insertion. Pin 26 of the TV-processoris the inputfor the insertion control signal which is called "FBL". When the FBL signal level becomes higher than0.9V (but less than 3V)the R, G, B signals at pins 23,24,25 are inserted into the picture by using the internal switches incorporated in the TV-processor. This second insertion possibility is used for insertion of the on screen display signals , TXTor R. G. Bsignals from the CINCH socket..

9.6.7 RGB processing

skipped. By means of the inserted measuringpulses, the black current calibration loop, tracks the beam current feed back of the RGB signals at the cathodes ofthe picture tube. As a result of this calibration, the individual black level of the RGB output signals is shifted to a level which allocates around 10uAof beam current to each of the RGB signals. Pin 18 (BC_info) of the BIMOS is used as the feed back input from the CRT base panel.

9.6.9 Beam current limiting

A beam current limiting circuit inside the BiMOS handles the contrast and brightness control for the RGB signals. This prevents the CRT tube being over driven, which may cause seriousdamageinthelineoutputstage.Thereferenceusedfor this purpose is the DC voltage on Pin 22 (BLCIN) of the TVprocessor. Contrast and brightness reduction of the RGB output signals is therefore proportional to the voltage present on this pin. Contrast reduction starts when the voltage on pin 22 is lower than 3.0 V. Brightness reduction starts when the voltage on pin 22 is less than 2.0 V.

The voltage on pin 22 is normally 3.3V (limitor not active). To enable correct operation however, an external adaptation to the circuit is required for the correct functioning of the limiting function. This is connected to Pin 22, the circuit therefore ensures that correct peak white limiting and the average beam current limiting takes place. Components 6212, 2227, 3253, 3246 are for the average beam current limiting and the items connected to 7263 are for the peak white limiting. As a reference for the average beam current control the signal EHT_info is used. This signal is a measurement of the picture contents. It is filtered by 3253, 2227. As the time constant of the filter is much bigger than the frame period time, the DC at the anode of 6212 represents the average value of the picture content. Via 6212 and 2226 the DC voltage at pin 22 is slowly 'clamped'. For peak white limiting transistor 7263 is utilised. When peak white occurs, the DC voltage at the base of 7263 drops rapidly. 7263 starts conducting,which providesa path to discharge the capacitor 2226 very fast. The voltage bias at the base of 7263 is fixed via voltage divider 3251 and 3249. The RGB output signals are appliedto the CRT panel viaconnector

0243. Via diodes 6263, 6264 and 6265 and series resistor 3253, the RGB signals are also connected to the CRT_discharge signal. The level of this signal is only high during the time the set is switched off. And id due to the cathodes of the CRT are driven fullynegative. That meansthat the beam current is increased. and consequently the CRT quickly discharged.

9.6.10 CRT panel (see circuit diagram B)

On the CRT panel the output amplifiers for the RGB signals ( IC T7330, DA6107Q) are located. Viathe outputs 9, 8 and 7 of the IC the cathodes of the CRT are driven. The supply voltage for the IC is +200VA and is derived from the line output stage.

The RGB processing circuit enables the picture parameters to be adjusted by using a combination of the user menus and the remote control. Additionally automatic gain control forthe RGB signals via cut-off stabilisation is achieved in this functional block..

The block also inserts the cut off point "measuring pulses" into the RGB signals during vertical retrace period.. From outputs 19,20 and 21 the RGB signals are then applied to the output amplifiers on the CRT panel.

9.6.8 Black current calibration loop

The black current calibration loop ensures that the white balance at low signal levels and low light white balance is

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11 List of Abbreviations

2CS 2 Carrier Stereo A/P AsiaPacific; schematic/PCB information (only)

applicable for Asia Pacific sets AFC Automatic Frequency Control AQUADAG Aquadagcoatingonthe(outsideofthe)picture

tube AudioOutR Audio signal at Right output channel. AudioOutL/Mono Audio signal at Left output channel / Mono

output channel. AV_MUTE Signal to mute the sound on the Audio-out of

Cinch / Scart (Combined with RBG_Blanking) Ext2Fun_SW (AV_Mute/ Ext2Fun_SW) Switching signal from Scart2 to micro

controller indicating the presence and type of

signal on Scart2. (no signal / CVBS 16:9 /

CVBS 4:3) AV Audio Video signal AVL Automatic Volume Level B_TXT_OSD Blue TXT or OSD signal from uC to the video

controller IC7250 (BIMOS) BASS Control signal for BASS BCI Beam Current information BTSC Broadcast Television Standard Committee;

sound standard for America and Asia Pacific Buzzer Buzzer (only used in L9-ITV) CRT DISCHARGE Fast drop of VBATT during after switch off the

set. Which result in EHT voltage reducing to

less than 18 kv within 5 sec. CTI Colour Transient Improvement CVBS ColourVideo BlankingSynchronisation. Video

signal containing colour, black/white, blanking

and synchronisation information. CVBS_EXT CVBS external = CVBS signal form external

source (VCR, DVD etc.) CVBS_INT CVBS internal = CVBS signal from the tuner CVBS_MON CVBS monitor (CVBS) signal to Cinch or Scart CVBS_Terr CVBS Terrestrial output signal CVBS_TXT CVBS for TXT processing in micro controller Din Digital input signal only used in L9-ITV) Dout Digital output signal (only used in L9-ITV) DBX Dynamic Bass Expander (only used for BTSC

sound system) DNR Dynamic Noise Reduction EAR Earth (ground layer) EEPROM Electrically Erasable Programmable Read

Only Memory (also called NVM; non-volatile

memory) EHT-INFO Extra high tension information; Beam current

related signal from CRT to BIMOS. Ext1 B RGB External 1 Blue input signal. Ext1 FB RGB External 1 Fast-blanking input signal. Ext1 G RGB External 1 Green input signal. Ext1 R RGB External 1 Red input signal. Ext1 Video RGB External 1 Video input signal. Ext2 AudioL/Mono External 2 Audio Left input signal / Mono input

signal. Ext Audio/Mono ExternalAudio input signal/ Mono input signal. Ext2 AudioR External 2 Audio Right input signal. Ext2C Exterial2 SVHS Chrominance (C) input signal. Ext2Video/Y External 2 Video input signal or SVHS

Luminance (Y) input signal. ESD Electrostatic Discharge EURO Europe; schematic/PCB information (only)

applicable for European sets EWD_dyn Dynamic East-West correction to compensate

for variations in EHT EWDRIVE East-West drive correction FB_TXT_OSD Fast blanking signal from micro controller to

IC7250 (BIMOS) for inserting or displaying

TXT and OSD information (generated by the

micro processor) Filament Filament (heater voltage) from LOT to CRT

61L9.1A

FBL Fast Blanking FFBL Full screen Fast Blanking FM/AM/ Ext_VC_AudioMono FM, AM or external mono signal from BiMOS

to audio processor input (only used in Mono and Nicam L sets)

Front/Ext1AudioL Front audio Left input signal / External 1 Audio

Left input signal.

Front/Ext1AudioR Front audio Right input signal / External 1

Audio Right input signal. GND Ground GND_LOT Ground of LOT G_TXT_OSD Green TXT or OSD signal from micro

processor to the video controller IC7250

(BIMOS) HD Horizontal pulse derivation HDRIVE Horizontal output drive HEW_protn Switching signal to (de)activate the XRAY

protection which is measured via pin 50 of the

BIMOS (only for USA sets) Hflybk Horizontal flyback pulse used to monitor the

horizontal oscillator IF Intermediate Frequency signal from the tuner 12C (or IIC) 2Wire communication protocol between micro

controller and integrated circuits IC Integrated Circuit I/O Input/Output INT Audio internal output IR Output signal from infrared receiver to micro

controller. KeyBd1 Local keyboard control signal to micro

controller KeyBd2 Local keyboard control signal to micro

controller (In protection mode KeyBd2 is

Ground) KeyBd3 Local keyboard control signal to micro

controller L- Power amplifier output to headphone and

speaker L+ Power amplifier output to speaker LED LEDcontrol signal from micro controllerto LED LATAM Latin America; schematic/PCB information

(only) applicable for Latin American (incl.

Brazilian) sets LeftOut Audio Left signal output LTI Luminance Transient Improvement (=

steepness) MainAudioL/Mono AudioLeft/Mono signal toinput power amplifier MainAudioR Audio Right signal to input power amplifier MON Audio monitor output NICAM Near Instantaneous Companded Audio

Muliplex (digital audio) NR Noise Reduction NTSC NTSC colour system OSD On Screen Display P0Sys1/AM Switching signal with several functions:

BiMOS crystal selection (only for Latam

sets)Selection of AM or FM signal (used in

combination with P1Sys2/AMFM_ExtSel)

(only for Europe) P1Sys2/ AMFM_ExtSel Switching signal with several functions:

BIMOS crystal selection (only for Latam

sets)Selection of internal AM/FM signal or an

external signal (used in combination with

P0Sys1/AM) P2LLp/Mtrap Switchingsignal with severalfunctions: M-trap

(sound filtering) switching (only for A/P Pal

Multi sets)BiMOS crystal selection (only for

Latamsets)Selectionof L or L' system (only for

Europe sets) P3Dual/Mono Switching signal to select the sound filter in

dual-system Mono sets (BG/I, BG/DK or I/DK).

Page 36

62 L9.1A

P4ScartPin8/SVHS Switching signal from I/O to micro controller

with several functions:Scart1 I/O: detects signal type connected to Scart 1 (no signal, 16:9 signal, 4:3 signal) (only for Europe)Cinch I/O: detects signal type connected to cinch: SVHS or CVBS (not for Europe)

P5BassSw Bass switching signal (only for some mono

sets)

P6TrebleSw Treble switching signal (only for some mono

sets) P7Ext1/2 Used in L9-ITV sets (Hotel TV) P9stbyon+protn Signal from E-W and LOT output to micro

controller to (de)activate the protection mode P10Mute/Volume Audio mute / Volume control signal pin POR/CLK Power on reset (only used in L9-ITV sets) R- Power amplifier output " R- " to speaker R+ Power amplifier output " R+ " to headphone

and speaker RAM Random Access Memory RESET Reset signal to micro controller RF_AGC Automatic gain control signal from BiMOS

output to tuner input. RGB Red-Green-Blue RGB_Blanking Red Green Blue Blanking signal (combined

with AV_MUTE) RightOut Audio right signal output R_TXT_OSD Red TXT or OSD signal from uC to the video

controller IC7250 (BIMOS) ROM Read Only Memory SAM Service Alignment Mode. Service mode for

alignments and error buffer display SAP Second audio program (only for USA & A/P

sets) SCL Clock line of the I2C-bus SCL2 2nd Clock line of the IIC-bus (only used in L9-

ITV sets) SDA Data line of the I2C-bus SDA2 2nd Data line of the I2C-bus (only used in L9-

ITV sets) SDM Service Default Mode. Service mode with

predefined settings for waveform and voltage

measurements, error buffer displayand option

(byte) setting. SIF Sound IF signal for FM audio demodulator SMPS Switching Mode Power Supply STANDBY Switchingsignal from micro controller; "low" for

standby (power supply will be switched to

stand-by mode), "high" for normal operation SW_OUT Selected Output signal from source SYNC Synchronisation TBD To Be Defined TREBLE Control signal for treble TXT Teletext uC Micro controller USA United States; schematic/PCB information

(only) applicable for North American sets V_TUNE Tuning voltage for tuner Vdrive - Negative Vertical drive pulse signal Vdrive + Positive Vertical drive pulse signal VD Vertical pulse derivation VFL Verticalflyback pulse used to inform the micro

controller that flyback is occurring. This is

critical for the correct OSD and TXT Vflybk Vertical flyback pulse VG2 Voltage on grid 2 of the picture tube (screen

control) VideoOut CVBS output signal VOLUME Control signal (from micro controller, but on

DClevelvia RC network) for sound processing

in sound IC XRAY-PROT XRAY protection (only for USA sets) YC Luminance (Y) and Chrominance (C)

11 List of Abbreviations

Page 37

12 Spare parts list

63L9.1A

12 Spare parts list

Mono carrier [A]

Various

0127∆ 4822 256 92053 FUSE HOLDER 0151 4822 256 10336 LED HOLDER 0189∆ 4822 402 10844 PCB BRACKET 0211∆ 4822 265 20723 2P male (vert.) 0213∆ 4822 267 10775 2P MALE (Bl) 0224 4822 267 10676 Conn. 1P 0228 4822 267 10676 Conn. 1p 0231∆ 4822 276 14024 Mains switch 0232∆ 4822 267 31014 Headphone socket 0232∆ 4822 267 51391 F PHONE 3.5MM

0267 4822 267 31673 Headphone plug 1000∆ 4822 210 10852 Tuner TEDH9X007A 1000∆ 4822 210 10854 Tuner TEDH9X001A 1001 4822 242 10314 filter 5,5MHz 1003 4822 242 10357 filter 6,0MHz 1003 4822 242 10874 filter 47,5 MHz 1003 4822 242 81964 SAW filter

1200 4822 242 10315 cer. flt 5,5/5,7/ 1200 4822 242 81712 cer. flt TPWA04B

1200 4822 242 81978 filter 4,5MHz 1201 4822 242 81572 filter 6,0MHz 1203 4822 242 81978 filter 4,5MHz 1206 4822 242 10705 cristal 3 583 056

1207 4822 242 10706 cristal 3 575 011 1208 4822 242 10776 cristal 3 579 545 1208 4822 242 81967 cristal 3 579 545 1500 4822 070 34002 Fuse (4A)

1572∆ 4822 071 51002 Fuse (1A) 1573∆ 4822 071 52502 Fuse (2.5A) 1580∆ 4822 280 10367 Relay 1600 4822 276 13775 SWITCH 1601 4822 276 13775 SWITCH 1602 4822 276 13775 SWITCH 1603 4822 276 13775 SWITCH 1660 4822 242 10694 cristal 12MHz 1822 4822 242 10769 cristal 18,432MHz

STEREO

OFWG1984M 6,5Mhz

MHz MHz MHz MHz

2001 4822 126 13751 47nF 10% 63V 2002 4822 124 40255 100µF 20% 63V 2003 4822 124 40255 100µF 20% 63V 2004 5322 122 32654 22nF 10% 63V 2005 4822 122 33575 220pF 5% 63V 2006 4822 126 13695 82pF 1% 63V 2008 4822 122 33177 10nF 20% 50V 2009 5322 122 33861 120pF 10% 50V 2010 4822 122 33926 12pF 5% 50V 2011 4822 124 41579 10µF 20% 50V 2013 4822 126 10002 100nF 20% 25V 2014 4822 122 33177 10nF 20% 50V 2101 5322 122 31863 330pF 5% 63V 2102 5322 122 31863 330pF 5% 63V 2103 5322 122 31863 330pF 5% 63V 2104 5322 122 31863 330pF 5% 63V 2107 5322 122 31863 330pF 5% 63V 2109 5322 122 31863 330pF 5% 63V 2111 4822 124 41579 10µF 20% 50V 2112 4822 124 41579 10µF 20% 50V 2115 4822 126 13836 1µF 16V 2173 5322 122 31863 330pF 5% 63V 2174 4822 124 81029 100µF 20% 25V 2176 5322 122 31863 330pF 5% 63V 2177 4822 124 81029 100µF 20% 25V 2201 4822 124 40242 1µF 20% 63V 2202 5322 126 10465 3.9nF 10% 50V 2203 4822 124 41579 10µF 20% 50V 2204 5322 122 32531 100pF 5% 50V 2205 4822 122 33177 10nF 20% 50V 2205 4822 126 10002 100nF 20% 25V 2206 4822 126 10002 100nF 20% 25V 2207 4822 124 81029 100µF 20% 25V 2208 4822 124 81029 100µF 20% 25V 2209 4822 126 13482 470nF 20% 16V 2211 4822 126 13482 470nF 20% 16V 2212 4822 126 13482 470nF 20% 16V 2213 4822 126 13482 470nF 20% 16V 2214 5322 122 32654 22nF 10% 63V 2215 4822 124 41576 2.2µF 20% 50V 2216 4822 126 13561 220nF 10% 16V 2217 4822 122 33575 220pF 5% 63V 2217 4822 126 13689 18pF 1% 63V 2218 4822 126 13486 15pF 2% 63V 2219 4822 126 13486 15pF 2% 63V 2220 4822 122 33575 220pF 5% 63V 2220 4822 126 13486 15pF 2% 63V 2221 5322 126 10511 1nF 5% 50V 2222 4822 126 10002 100nF 20% 25V 2225 4822 126 13061 220nF 20% 25V 2226 4822 124 23489 33µF 20% 25V

2227 4822 124 40242 1µF 20% 63V 2247 4822 126 13751 47nF 10% 63V 2248 4822 126 13751 47nF 10% 63V 2249 4822 126 13751 47nF 10% 63V 2401 5322 121 42386 100nF 5% 63V 2402 5322 121 42386 100nF 5% 63V 2403 4822 124 40255 100µF 20% 63V 2404 4822 121 42408 220nF 5% 63V 2405 5322 122 32268 470pF 10% 50V 2407 5322 122 32268 470pF 10% 50V 2409 4822 121 42408 220nF 5% 63V 2420 5322 126 10223 4.7nF 10% 63V 2426 5322 121 42386 100nF 5% 63V 2428 4822 122 33175 2.2nF 20% 50V 2429 4822 124 40242 1µF 20% 63V 2430 4822 124 41579 10µF 20% 50V 2431 4822 126 10002 100nF 20% 25V 2437 4822 126 13061 220nF 20% 25V 2438 4822 126 13836 1µF 16V 2440 5322 126 10511 1nF 5% 50V 2441 5322 126 10511 1nF 5% 50V 2448 4822 122 31173 220pF 10% 500V 2450 4822 124 11575 47µF 20% 160V 2451 4822 121 41935 12nF 5% 250V 2451 4822 121 51305 15nF 10% 50V 2456 4822 121 43526 47nF 5% 250V 2457∆ 4822 121 10518 390nF 5% 250V 2457∆ 4822 121 43888 360nF 5% 250V 2458 4822 124 42127 10µF 20% 100V 2459 4822 126 13185 680pF 10% 500V 2461 4822 122 31175 1nF 10% 500V 2462 4822 121 43526 47nF 5% 250V 2463∆ 4822 126 14053 1nF 10% 2KV 2463∆ 4822 126 14138 680pF 10% 2KV 2463∆ 4822 126 14184 820pF 10% 2KV 2464 4822 121 10739 2.2µF 5% 160V 2465∆ 4822 121 70617 10nF 5% 1.6KV 2465∆ 4822 121 70649 9.1nF 5% 1.6KV 2466 4822 121 40483 10nF 10% 400V 2467∆ 4822 121 40488 22nF 10% 400V 2468∆ 4822 121 40488 22nF 10% 400V 2468 5322 121 44151 33nF 10% 400V 2469 4822 121 51319 1µF 10% 63V 2470 4822 122 31177 470pF 10% 500V 2471 4822 121 51252 470nF 5% 63V 2472 5322 124 41379 2.2µF 20% 50V 2473 4822 124 41751 47µF 20% 50V 2475 4822 126 14096 560nF 5% 250V 2481 4822 121 51252 470nF 5% 63V 2482 4822 121 40482 68nF 10% 250V 2484 5322 121 42386 100nF 5% 63V 2485 4822 124 81107 4.7µF 20% 250V 2486 4822 124 80791 470µF 20% 16V 2487 4822 124 40255 100µF 20% 63V 2488 4822 124 80791 470µF 20% 16V 2489 4822 124 80791 470µF 20% 16V 2490 4822 122 31177 470pF 10% 500V 2491 4822 122 31177 470pF 10% 500V 2492 4822 126 10326 180pF 5% 63V 2500∆ 4822 126 13589 470nF 275V 2501 4822 121 70141 33nF 5% 400V 2502∆ 4822 126 14153 2.2nF 10% 1KV 2504∆ 4822 126 14153 2.2nF 10% 1KV 2505∆ 4822 126 14153 2.2nF 10% 1KV 2507∆ 4822 126 11524 1.5nF 10% 1KV 2508 4822 124 12415 220µF 20% 400V 2508 4822 124 12442 330µF 20% 450V 2508∆ 4822 124 42159 330µF 20% 400V 2511∆ 4822 122 50116 470pF 10% 1KV 2517 5322 122 32331 1nF 10% 100V 2518∆ 4822 122 50116 470pF 10% 1KV 2520 4822 126 13695 82pF 1% 63V 2521 4822 122 33891 3.3nF 10% 63V 2522 4822 122 33891 3.3nF 10% 63V 2524 5322 122 31863 330pF 5% 63V 2529 4822 126 10002 100nF 20% 25V 2530 4822 124 11571 1µF 20% 50V 2531 4822 121 10738 1nF 2% 50V 2532 5322 122 32268 470pF 10% 50V 2533 4822 122 33175 2.2nF 20% 50V 2540 4822 124 80059 100µF 20% 25V 2541 4822 124 12416 3.3µF 20% 160V 2542 4822 124 40433 47µF 20% 25V 2545∆ 4822 126 14049 1.5nF 20% 250V 2550∆ 4822 122 50116 470pF 10% 1KV 2551 4822 124 42336 47µF 20% 160V 2561 4822 124 40784 3300µF 20% 16V 2562∆ 4822 126 13337 220pF 10% 1KV 2564 5322 122 34123 1nF 10% 50V 2565 5322 122 34123 1nF 10% 50V 2571 4822 124 12417 2200µF 20% 25V 2573 4822 126 12105 33nF 5% 50V 2575 4822 126 10002 100nF 20% 25V 2576 5322 122 31866 6.8nF 10% 63V 2586 4822 124 22263 220µF 20% 25V 2604 4822 124 81151 22µF 50V 2609 5322 126 10511 1nF 5% 50V 2613 5322 121 42386 100nF 5% 63V 2615 4822 126 10002 100nF 20% 25V 2616 5322 122 32658 22pF 5% 50V 2617 5322 122 32658 22pF 5% 50V 2618 5322 122 32531 100pF 5% 50V 2619 4822 124 40242 1µF 20% 63V 2620 5322 122 32658 22pF 5% 50V

2621 5322 122 32658 22pF 5% 50V 2622 4822 124 22263 220µF 20% 25V 2623 4822 122 33177 10nF 20% 50V 2624 4822 126 13694 68pF 1% 63V 2625 4822 122 33172 390pF 5% 50V 2626 4822 122 33172 390pF 5% 50V 2627 4822 122 33172 390pF 5% 50V 2628 4822 122 33172 390pF 5% 50V 2629 4822 122 30103 22nF 20% 63V 2630 4822 126 10002 100nF 20% 25V 2631 4822 126 13836 1µF 16V 2633 4822 122 33177 10nF 20% 50V 2679 4822 126 10002 100nF 20% 25V 2681 4822 124 22263 220µF 20% 25V 2697 5322 126 10511 1nF 5% 50V 2843 4822 124 81029 100µF 20% 25V 2850 4822 126 10326 180pF 5% 63V 2850 4822 126 13693 56pF 1% 63V 2851 5322 126 10511 1nF 5% 50V 2852 5322 126 10511 1nF 5% 50V 2853 5322 126 10511 1nF 5% 50V 2854 5322 126 10511 1nF 5% 50V 2855 5322 122 32286 3.3pF 5% 50V 2856 5322 122 32286 3.3pF 5% 50V 2857 4822 126 13836 1µF 16V 2858 4822 126 13692 47pF 1% 63V 2859 4822 126 13486 15pF 2% 63V 2860 4822 124 41579 10µF 20% 50V 2861 4822 126 10002 100nF 20% 25V 2862 4822 126 10002 100nF 20% 25V 2863 4822 124 41579 10µF 20% 50V 2864 4822 126 13061 220nF 20% 25V 2865 4822 126 13061 220nF 20% 25V 2866 4822 126 13061 220nF 20% 25V 2867 4822 126 13061 220nF 20% 25V 2868 4822 124 40769 4.7µF 20% 100V 2869 4822 126 10002 100nF 20% 25V 2870 4822 126 10002 100nF 20% 25V 2871 4822 124 41579 10µF 20% 50V 2874 4822 126 13692 47pF 1% 63V 2875 4822 126 13692 47pF 1% 63V 2877 4822 126 10002 100nF 20% 25V 2882 5322 126 10511 1nF 5% 50V 2883 4822 124 41579 10µF 20% 50V 2884 5322 126 10511 1nF 5% 50V 2887 4822 122 33575 220pF 5% 63V 2887 4822 126 10326 180pF 5% 63V 2888 4822 124 81029 100µF 20% 25V 2889 4822 126 10002 100nF 20% 25V 2891 4822 126 13691 27pF 1% 63V 2891 5322 122 32659 33pF 5% 50V 2950 4822 124 81029 100µF 20% 25V 2952 4822 126 13836 1µF 16V 2954 4822 126 13482 470nF 20% 16V 2955 4822 122 33177 10nF 20% 50V 2956 4822 126 13836 1µF 16V 2958 4822 126 13482 470nF 20% 16V 2959 4822 122 33177 10nF 20% 50V 2960 4822 124 11908 2200µF 20% 25V 2961 4822 124 11947 10µF 20% 16V 2962 5322 122 32448 10pF 5% 63V 2963 5322 122 32448 10pF 5% 63V

3000 4822 116 52175 100Ω 5% 0.5W 3001 4822 116 52175 100Ω 5% 0.5W 3010 4822 116 52228 680Ω 5% 0.5W 3013∆ 4822 051 20008 jumper (0805) 3014∆ 4822 051 20472 4k7 5% 0.1W 3015 4822 051 20223 22k 5% 0.1W 3016 4822 116 52228 680Ω 5% 0.5W 3021 4822 051 10102 1k 2% 0.25W 3023 4822 116 52243 1k5 5% 0.5W 3024 4822 116 52257 22k 5% 0.5W 3026 4822 051 20562 5k6 5% 0.1W 3100 4822 116 83868 150Ω 5% 0.5W 3101 4822 117 13579 220k 1% 0.1W 3103 4822 116 52303 8k2 5% 0.5W 3104 4822 117 10833 10k 1% 0.1W 3105 4822 116 83868 150Ω 5% 0.5W 3108 4822 116 52303 8k2 5% 0.5W 3109 4822 117 10833 10k 1% 0.1W 3122 4822 117 13579 220k 1% 0.1W 3123 4822 051 20759 75Ω 5% 0.1W 3125 4822 116 52199 68Ω 5% 0.5W 3131 4822 116 52303 8k2 5% 0.5W 3132 4822 117 10833 10k 1% 0.1W 3134 4822 116 52195 47Ω 5% 0.5W 3136 4822 116 52303 8k2 5% 0.5W 3137 4822 117 10833 10k 1% 0.1W 3140 4822 116 52201 75Ω 5% 0.5W 3141 4822 116 52175 100Ω 5% 0.5W 3142 4822 116 52201 75Ω 5% 0.5W 3155∆ 4822 051 20471 470Ω 5% 0.1W 3156 4822 116 52206 120Ω 5% 0.5W 3157 4822 116 52206 120Ω 5% 0.5W 3161 4822 117 10834 47k 1% 0.1W 3162 4822 117 10834 47k 1% 0.1W 3200 4822 051 20561 560Ω 5% 0.1W 3201 4822 051 20182 1k8 5% 0.1W 3201 4822 051 20391 390Ω 5% 0.1W 3203 4822 051 20331 330Ω 5% 0.1W

3204 4822 116 52249 1k8 5% 0.5W 3205 4822 051 10102 1k 2% 0.25W 3206 4822 051 20561 560Ω 5% 0.1W 3206 4822 117 10353 150Ω 1% 0.1W 3208 4822 116 52175 100Ω 5% 0.5W 3209 4822 051 20223 22k 5% 0.1W 3210∆ 4822 051 20472 4k7 5% 0.1W 3211∆ 4822 051 20472 4k7 5% 0.1W 3212 4822 051 20391 390Ω 5% 0.1W 3213 4822 051 20561 560Ω 5% 0.1W 3215 4822 051 20223 22k 5% 0.1W 3216∆ 4822 051 20008 jumper (0805) 3216 4822 117 10353 150Ω 1% 0.1W 3218∆ 4822 051 20101 100Ω 5% 0.1W 3219 4822 051 20561 560Ω 5% 0.1W 3220∆ 4822 051 20101 100Ω 5% 0.1W 3222 4822 116 52303 8k2 5% 0.5W 3223 4822 116 52303 8k2 5% 0.5W 3224 4822 116 52303 8k2 5% 0.5W 3225 4822 051 20104 100k 5% 0.1W 3228∆ 4822 051 20101 100Ω 5% 0.1W 3243∆ 4822 051 20472 4k7 5% 0.1W 3246 4822 117 11149 82k 1% 0.1W 3247 4822 116 52175 100Ω 5% 0.5W 3248 4822 116 52175 100Ω 5% 0.5W 3249 4822 051 20334 330k 5% 0.1W 3250∆ 4822 051 20008 jumper (0805) 3251 4822 051 20104 100k 5% 0.1W 3251 4822 051 20274 270k 5% 0.1W 3251 4822 051 20474 470k 5% 0.1W 3251 4822 051 20684 680k 5% 0.1W 3252 4822 117 11449 2k2 1% 0.1W 3253 4822 117 11449 2k2 1% 0.1W 3257∆ 4822 051 20101 100Ω 5% 0.1W 3258∆ 4822 051 20101 100Ω 5% 0.1W 3259∆ 4822 051 20101 100Ω 5% 0.1W 3265 4822 051 20104 100k 5% 0.1W 3401 4822 111 31051 3Ω3 5% 3402 4822 111 31051 3Ω3 5% 3403 4822 111 31051 3Ω3 5% 3405 4822 050 22002 2k 1% 0.6W 3405 4822 050 22202 2k2 1% 0.6W 3406 4822 050 11002 1k 1% 0.4W 3407 4822 050 22002 2k 1% 0.6W 3407 4822 050 22202 2k2 1% 0.6W 3408 4822 050 11002 1k 1% 0.4W 3409∆ 4822 052 10158 1Ω5 5% 0.33W 3410 4822 116 83872 220Ω 5% 0.5W 3411 4822 116 83872 220Ω 5% 0.5W 3420 4822 051 20474 470k 5% 0.1W 3421 4822 116 52256 2k2 5% 0.5W 3422 4822 116 52256 2k2 5% 0.5W 3423 4822 051 20684 680k 5% 0.1W 3424 4822 051 20106 10M 5% 0.1W 3425 4822 051 20124 120k 5% 0.1W 3425 4822 051 20154 150k 5% 0.1W 3425 4822 117 11148 56k 1% 0.1W 3426 4822 051 20393 39k 5% 0.1W 3428 4822 051 20223 22k 5% 0.1W 3429 4822 051 20273 27k 5% 0.1W 3431∆ 4822 051 20332 3k3 5% 0.1W 3432∆ 4822 051 20101 100Ω 5% 0.1W 3436 4822 051 10102 1k 2% 0.25W 3437 4822 117 10833 10k 1% 0.1W 3438 4822 116 52271 33k 5% 0.5W 3442 4822 116 52276 3k9 5% 0.5W 3448 4822 116 52303 8k2 5% 0.5W 3449 4822 116 52269 3k3 5% 0.5W 3452 4822 053 12229 22Ω 5% 3W 3452∆ 4822 053 12339 33Ω 5% 3W 3453 4822 117 12822 4Ω7 5% 5W 3454 4822 053 11333 33k 5% 2W 3458 4822 050 11002 1k 1% 0.4W 3461 4822 116 52283 4k7 5% 0.5W 3462 4822 117 12514 6k8 5% 5W 3463 4822 116 52195 47Ω 5% 0.5W 3465∆ 4822 052 10109 10Ω 5% 0.33W 3468 4822 050 11002 1k 1% 0.4W 3470 4822 116 52271 33k 5% 0.5W 3471 4822 116 83874 220k 5% 0.5W 3472 4822 116 52234 100k 5% 0.5W 3472 4822 116 52304 82k 5% 0.5W 3473 4822 050 11002 1k 1% 0.4W 3474 4822 050 24708 4Ω7 1% 0.6W 3474 4822 111 31051 3Ω3 5% 3475 4822 050 24708 4Ω7 1% 0.6W 3475 4822 111 31051 3Ω3 5% 3477 4822 116 52175 100Ω 5% 0.5W 3478 4822 116 83874 220k 5% 0.5W 3479 4822 116 52219 330Ω 5% 0.5W 3480 4822 050 22703 27k 1% 0.6W 3481 4822 050 21004 100k 1% 0.6W 3481 4822 050 22703 27k 1% 0.6W 3481 4822 117 13667 32k4 1% 0.5W 3481 4822 117 13672 35k7 1% 0.6W 3482∆ 4822 050 24703 47k 1% 0.6W 3482 4822 050 25603 56k 1% 0.6W 3483 4822 116 52257 22k 5% 0.5W 3484 4822 116 83864 10k 5% 0.5W 3485∆ 4822 052 11478 4Ω7 5% 0.5W 3486 4822 052 11108 1Ω 5% 0.5W 3487 4822 052 11108 1Ω 5% 0.5W 3488∆ 4822 052 11478 4Ω7 5% 0.5W 3490 4822 052 11108 1Ω 5% 0.5W

Page 38

64 L9.1A

12 Spare parts list

3491 4822 052 11108 1Ω 5% 0.5W 3492 4822 052 11108 1Ω 5% 0.5W 3495 4822 117 11507 6k8 1% 0.1W 3496 4822 117 10833 10k 1% 0.1W 3497 4822 117 10833 10k 1% 0.1W 3501 4822 117 12181 470Ω 20% 0.5W 3502∆ 4822 053 21225 2M2 5% 0.5W 3503 4822 116 10105 9Ω 220V PTC 3505∆ 4822 252 11215 Surge prot.

3507 4822 116 82776 2Ω2 3508 4822 117 13473 22k 5% 2.5W PR03 3510∆ 4822 116 82107 68k 5% 3W 3510 4822 117 11488 33k 5% 3W 3511 4822 117 12568 1k 10% 7W 3512∆ 4822 051 20153 15k 5% 0.1W 3513 4822 117 11719 180k 3514 4822 050 28204 820k 1% 0.6W 3515 4822 116 30451 NTC 3516 4822 051 10102 1k 2% 0.25W 3517 4822 050 11002 1k 1% 0.4W 3518∆ 4822 116 83027 R22 5% 3W 3520 4822 116 52304 82k 5% 0.5W 3521 4822 051 20331 330Ω 5% 0.1W 3525∆ 4822 052 10339 33Ω 5% 0.33W 3528 4822 116 52175 100Ω 5% 0.5W 3529 4822 116 52199 68Ω 5% 0.5W 3530 4822 116 52269 3k3 5% 0.5W 3532 4822 116 83961 6k8 5% 3534∆ 4822 051 20153 15k 5% 0.1W 3536 4822 116 52251 18k 5% 0.5W 3537 4822 116 83864 10k 5% 0.5W 3542∆ 4822 053 21475 4M7 5% 0.5W 3543 4822 116 83874 220k 5% 0.5W 3544 4822 051 20273 27k 5% 0.1W 3545 4822 116 52271 33k 5% 0.5W 3546 4822 117 10834 47k 1% 0.1W 3547 4822 051 10102 1k 2% 0.25W 3570∆ 4822 051 20153 15k 5% 0.1W 3570 4822 117 10833 10k 1% 0.1W 3571 4822 050 21504 150k 1% 0.6W 3571 4822 050 21604 160k 1% 0.6W 3573 4822 117 11951 2k 1% 0.1W 3574 4822 051 20333 33k 5% 0.1W 3575 4822 116 52175 100Ω 5% 0.5W 3577 4822 116 83864 10k 5% 0.5W 3578 4822 051 10102 1k 2% 0.25W 3579 5322 117 12487 1k 1% 0.125W 3585 4822 116 52175 100Ω 5% 0.5W 3592 4822 117 10833 10k 1% 0.1W 3594 4822 051 20223 22k 5% 0.1W 3595 4822 116 52297 68k 5% 0.5W 3596 4822 116 83864 10k 5% 0.5W 3597∆ 4822 051 20101 100Ω 5% 0.1W 3598 4822 117 10833 10k 1% 0.1W 3599 4822 051 20223 22k 5% 0.1W 3607 4822 116 90884 8k2 x10 3608 4822 117 12168 2k2 x6 3609 4822 117 13649 2k2 5% 7X 3611 4822 051 10102 1k 2% 0.25W 3612 4822 117 10833 10k 1% 0.1W 3613 4822 117 10833 10k 1% 0.1W 3617 4822 051 20822 8k2 5% 0.1W 3618 4822 116 52175 100Ω 5% 0.5W 3619∆ 4822 051 20472 4k7 5% 0.1W 3629∆ 4822 051 20471 470Ω 5% 0.1W 3630 4822 116 83883 470Ω 5% 0.5W 3631 4822 051 20273 27k 5% 0.1W 3632 4822 053 12479 47Ω 5% 3W 3633 4822 116 52231 820Ω 5% 0.5W 3634 4822 117 11449 2k2 1% 0.1W 3635 4822 051 20223 22k 5% 0.1W 3636 4822 051 20223 22k 5% 0.1W 3651 4822 116 52175 100Ω 5% 0.5W 3652 4822 116 52175 100Ω 5% 0.5W 3653 4822 116 83864 10k 5% 0.5W 3654∆ 4822 051 20101 100Ω 5% 0.1W 3655∆ 4822 051 20101 100Ω 5% 0.1W 3657 4822 116 83876 270Ω 5% 0.5W 3661 4822 116 52175 100Ω 5% 0.5W 3662∆ 4822 051 20472 4k7 5% 0.1W 3663 4822 051 20822 8k2 5% 0.1W 3664 4822 051 20822 8k2 5% 0.1W 3665∆ 4822 051 20472 4k7 5% 0.1W 3666 4822 051 20562 5k6 5% 0.1W 3667 4822 051 20273 27k 5% 0.1W 3672∆ 4822 051 20472 4k7 5% 0.1W 3673 4822 117 10833 10k 1% 0.1W 3674 4822 051 20182 1k8 5% 0.1W 3675 4822 117 10353 150Ω 1% 0.1W 3676 4822 117 10353 150Ω 1% 0.1W 3677 4822 117 10353 150Ω 1% 0.1W 3680 4822 051 20681 680Ω 5% 0.1W 3681∆ 4822 051 20472 4k7 5% 0.1W 3682 4822 051 20822 8k2 5% 0.1W 3683∆ 4822 051 20101 100Ω 5% 0.1W 3684∆ 4822 051 20332 3k3 5% 0.1W 3686 4822 051 20822 8k2 5% 0.1W 3841 4822 116 52175 100Ω 5% 0.5W 3842 4822 116 52175 100Ω 5% 0.5W 3843 4822 117 10834 47k 1% 0.1W 3844∆ 4822 051 20471 470Ω 5% 0.1W 3845∆ 4822 051 20471 470Ω 5% 0.1W 3850 4822 117 11449 2k2 1% 0.1W

DSP301N-A21F

3950 4822 116 52228 680Ω 5% 0.5W 3951∆ 4822 051 20332 3k3 5% 0.1W 3952 4822 116 52175 100Ω 5% 0.5W 3953 4822 117 11507 6k8 1% 0.1W 3954 4822 117 11139 1k5 1% 0.1W 3955 4822 116 52283 4k7 5% 0.5W 3956 4822 117 11139 1k5 1% 0.1W 3957 4822 116 52283 4k7 5% 0.5W 4xxx 4822 051 10008 0Ω 5% 0.25W 4xxx 4822 051 20008 0Ω 5% 0.25W

5000 4822 157 51216 5.6µH 5002 4822 157 70439 Adj. coil 5004 4822 157 62411 0.82µH 20% 5101 4822 157 11867 5.6µH 5% 5201 4822 157 50961 22µH 5202 4822 157 11139 6.8µH 5% 5445∆ 4822 140 10666 LOT (pow. slot)29" 5445∆ 4822 140 10667 LOT 25" 5451 4822 157 11869 33µH 10% 5451 4822 157 71266 27µH 5457 4822 157 11671 lin. drum coil 5457 4822 157 11883 42µH 20% 5461∆ 4822 142 40351 LINE DRIVE TRAFO 5463 4822 157 11884 BRIDGE COIL 5465 4822 157 11886 BRIDGE COIL 5470 4822 157 11887 11000µH 15% 5471 4822 157 11885 1000µH 5% 5480 4822 156 20966 47 µH 5480 4822 157 70468 56µH 5480 4822 157 70698 27µH 5500∆ 4822 157 11523 5mH 5502 4822 157 10476 DMF-2820H 5502 4822 157 11538 10mH 5516 4822 157 60171 BEAD EMI 100MhZ

5518 4822 526 10704 100mH 5521 4822 157 62552 2.2µH 5540 4822 157 11835 4.7µH 5% 5545∆ 4822 146 11152 Transformer 5550 4822 157 60171 Bead EMI 100MHz

5551 4822 157 71401 27µH 5552 4822 526 10704 100mH 5572 4822 157 60171 Bead EMI 100MHz

5573 4822 157 60171 Bead EMI 100MHz 5575 4822 157 60171 Bead EMI 100MHz 5576 4822 157 60171 Bead EMI 100MHz 5577 4822 526 10704 100mH

5600 4822 157 62767 8.2µH 5601 4822 157 62767 8.2µH 5620 4822 157 11139 6.8µH 5% 5821 4822 157 50964 100µH 5831 4822 157 50943 12µH 5832 4822 157 50943 12µH 5833 4822 157 11743 12µH 5%

83R

83R 83R 83R 83R

6007 5322 130 34955 BA482 6008 4822 130 34142 BZX79-B33 6113 4822 130 10852 BZX284-C6V8 6122 4822 130 10852 BZX284-C6V8 6124 4822 130 10852 BZX284-C6V8 6125 4822 130 10852 BZX284-C6V8 6211 4822 130 30621 1N4148 6212 4822 130 30621 1N4148 6213 4822 130 30621 1N4148 6401 4822 130 42488 BYD33D 6402 4822 130 31024 BZX79-B18 6402 4822 130 34142 BZX79-B33 6403 4822 130 42488 BYD33D 6404 4822 130 42488 BYD33D 6449 4822 130 30621 1N4148 6450 4822 130 30621 1N4148 6460 4822 130 41275 BY228 6461 4822 130 41602 BYW95C 6463 4822 130 30621 1N4148 6465 4822 130 42606 BYD33J 6466 4822 130 42606 BYD33J 6470 4822 130 30862 BZX79-B9V1 6471 4822 130 30621 1N4148 6472 4822 130 30621 1N4148 6473 4822 130 34145 BZX79-B39 6480 4822 130 34379 BZX79-B27 6481 4822 130 30621 1N4148 6485 4822 130 42606 BYD33J 6486 4822 130 10256 EGP20DL-5300 6487 4822 130 42488 BYD33D 6488 4822 130 10871 SBYV27-200 6490 4822 130 10871 SBYV27-200 6500 4822 130 34328 BZX79-B30 6501 4822 130 34328 BZX79-B30 6505 4822 130 10741 GBU6J 6505 4822 130 83794 GBU4K 6507 4822 130 42606 BYD33J

6508 4822 130 42606 BYD33J 6510 4822 130 34499 BZX79-B20 6511 4822 130 41487 BYV95C 6512 4822 130 31083 BYW55 6513 4822 130 31083 BYW55 6514 4822 130 31024 BZX79-B18 6540 4822 130 30842 BAV21 6542 4822 130 30842 BAV21 6543 4822 130 83757 BAS216 6550 4822 130 10218 BY229X-800 6560 4822 130 10256 EGP20DL-5300 6570 4822 130 10256 EGP20DL-5300 6582 4822 130 10256 EGP20DL-5300 6584 4822 130 30621 1N4148 6585 4822 130 30621 1N4148 6590 4822 130 10256 EGP20DL-5300 6591 4822 130 83757 BAS216 6601 4822 130 31981 BZX79-B3V9 6606 4822 130 34174 BZX79-B4V7 6607 4822 130 34278 BZX79-B6V8 6663 4822 130 82223 LTL307E 6831 4822 130 83757 BAS216 6951 4822 130 83757 BAS216 6961 4822 130 83757 BAS216

7134 4822 130 40959 BC547B 7250 4822 209 17221 TDA8844/N2/S1 7250 4822 209 17464 TDA8843/N2/S1 7250 4822 209 17539 TDA8841/N2/S1 7250 4822 209 17543 TDA8847/N2/S1 7251∆ 4822 209 80591 LM317T 7252 5322 130 60508 BC857B 7253 5322 130 60508 BC857B 7254 4822 130 60511 BC847B 7256 4822 130 60511 BC847B 7257 5322 130 42718 BFS20 7258 4822 130 60511 BC847B 7259 5322 130 42718 BFS20 7261 5322 130 42718 BFS20 7263 5322 130 60508 BC857B 7266 4822 130 60511 BC847B 7401 4822 209 13176 TDA9302H 7401 4822 209 16352 STV9379FA 7460 4822 130 63569 BU1508DX 7461 4822 130 42159 BF819 7470 4822 130 11336 STP16NE06FP 7480 4822 209 90008 L78M05CP 7481 4822 130 44568 BC557B 7482 5322 130 60508 BC857B 7518 4822 130 63698 STH8NA60FI 7520 4822 209 15684 MC44603AP 7542 5322 130 60508 BC857B 7570 4822 209 81397 TL431CLPST 7581∆ 4822 209 71634 TCDT1101G 7590 4822 130 60511 BC847B 7591 4822 130 60511 BC847B 7592 4822 130 60511 BC847B 7600 4822 209 17537 SAA5563/M2A/0018 7600 4822 209 17538 SAA5542PS/M2A/

7600 4822 209 17542 SAA5543PS/M2A/ 7601∆ 4822 209 15546 ST24W08B6

7601 4822 209 15822 ST24W04B6 7603∆ 4822 130 41344 BC337-40 7604 4822 130 60511 BC847B 7605 4822 130 60511 BC847B 7608 4822 130 60511 BC847B 7609 4822 130 60511 BC847B 7680 4822 218 12055 TSOP2836UH1 7833 4822 209 17461 MSP3415D-PP-A2 7833 4822 209 17544 MSP3435G-PP-A4 7833 4822 209 17545 BSP3505D-PP-A2 7950 4822 209 13646 TDA7057AQ/N2

0017 0019

CRT panel [B]

Various

0141 4822 492 70788 IC fixation 0254∆ 4822 267 20466 CON 9P fem 1013 4822 212 11999 CRT PANEL

2330 4822 121 51473 470nF 20% 63V 2340 4822 124 11565 10µF 20% 250V 2341 4822 126 13599 3.3nF 10% 500V 2343∆ 4822 126 12278 3300pF 10% 2KV 2345 4822 122 31175 1nF 10% 500V

3331 4822 116 52175 100Ω 5% 0.5W 3332 4822 117 11635 1k 10% 0.5W 3333 4822 116 52175 100Ω 5% 0.5W

3334 4822 117 11635 1k 10% 0.5W 3335 4822 116 52175 100Ω 5% 0.5W 3336 4822 117 11635 1k 10% 0.5W 3340∆ 4822 052 10109 10Ω 5% 0.33W 3341∆ 4822 052 10108 1Ω 5% 0.33W 3342∆ 4822 052 10108 1Ω 5% 0.33W 3343 4822 117 11896 1k5 20% 0.5W 3344 4822 116 52186 22Ω 5% 0.5W 3345 4822 117 13016 VDR 50-115V 3346 4822 116 52186 22Ω 5% 0.5W

5342 4822 157 50961 22µH

6331 4822 130 30842 BAV21 6333 4822 130 30842 BAV21 6335 4822 130 30842 BAV21

7330∆ 4822 209 16321 TDA6107Q/N1

SIDE AV [E]

Various

0021∆ 4822 402 11334 SIDE AV BRACKET 0250 4822 265 11606 Conn. 3P 0251 4822 267 10735 Conn. 3P 0252 4822 267 10565 Conn. 4P 0253 4822 267 10735 Conn. 3P 1040 4822 212 11997 Side AV panel

2171 4822 126 13512 330pF 10% 50V 2172 4822 126 13512 330pF 10% 50V

3150 4822 116 83864 10k 5% 0.5W 3151 4822 116 52303 8k2 5% 0.5W 3152 4822 116 83864 10k 5% 0.5W 3153 4822 116 52303 8k2 5% 0.5W 3155 4822 116 52201 75Ω 5% 0.5W

6161 4822 130 34278 BZX79-B6V8