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Colour Television

Chassis

L04E
AA

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Contents

Page

Contents
Top Control Panel (FL-13) Power Supply PIP Panel Tuner IF and Demodulator PIP Linearity & Panorama Panel LTI/CTI Interface Panel Front Interface Panel (FL-13) Front Interface Panel (PV2) Front Interface and Keyb. Panel Alignments Circuit Descriptions Abbreviation List IC Data Sheets Spare Parts List Revision List (Diagram E) (Diagram F1) (Diagram F2) (Diagram G) (Diagram H) (Diagram J) (Diagram J) (Diagram J)

Page
53 54 55 58 59 61 62 63 65 73 82 84 86 90 53 56-57 56-57 58 60 61 62 64

1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety and Maintenance Instructions, Warnings, and Notes 4 3. Directions for Use 6 4. Mechanical Instructions 7 5. Service Modes, Error Codes, and Faultfinding 9 6. Block Diagrams, Testpoint Overviews, and Waveforms Wiring Diagram 19 Block Diagram Supply and Deflection 20 Testpoint Overview Mono Carrier 21 Block Diagram Video 22 Testpoint Overview CRT, LTI & PIP Panel 23 Block Diagram Audio/Control 24 I2C and Supply Voltage Overview 25 7. Circuit Diagrams and PWB Layouts Diagram Power Supply (Diagram A1) 26 Diversity Table for A1 (Power Supply) 27 Deflection (Diagram A2) 28 Diversity Table for A2 (Deflection) 29 Tuner IF (Diagram A3) 30 Hercules (Diagram A4) 31 Features & Connectivities (Diagram A5) 32 Class D - Audio Amplifier (Diagram A6) 33 Audio Amplifier (Diagram A7) 34 Rear I/O Scart (Diagram A8) 35 Front Control (Diagram A9) 36 DVD Power Supply (Diagram A10)37 CRT Panel (Diagram B1) 44 ECO Scavem Panel (Diagram B2) 45 Side AV + HP Panel (PV2) (Diagram D) 48 Side AV + HP Panel (FL-13) (Diagram D) 50 Top Control Panel (PV2) (Diagram E) 52


8. 9.

10 11

PWB 38-43 38-43 38-43 38-43 38-43 38-43 38-43 38-43 38-43 38-43 38-43 38-43 46-47 46-47 49 51 52

Copyright 2004 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 otherwise without the prior permission of Philips. Published by BB 0466 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 14480

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L04E AA

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview
Notes: Described specifications are valid for the whole product range. Figures below can deviate slightly from the actual situation, due to different set executions. 1.2.1 Side Connections

SIDE I/O
S-Video (optional) Video L Audio R

1.1
1.1.1

Technical Specifications
Vision Display type : : : : : : : : : : : : : : : : : : DV-CRT-RF DV-CRT-FSQ DV-CRT-SF 21" (55 cm), 4:3 24" (61 cm), 16:9 25" (63 cm), 4:3 28" (70 cm), 4:3 29" (72 cm), 4:3 32" (82 cm), 16:9 PLL PAL B/G, B/H, D/K, I SECAM SECAM B/G, D/K, L/L' NTSC 100 presets UVSH 75 ohm, Coax IEC-type 1.2.2

E_14480_111.eps 060504

Screen size

Figure 1-1 Side I/O SVHS: Y/C - In (Hosiden) (optional) 1 - Ground Gnd 2 - Ground Gnd 3 -Y 1 V_pp / 75 ohm 4 -C 0.3 V_pp / 75 ohm Audio / Video In Ye - Video (CVBS) 1 V_pp / 75 ohm Wh - Audio - L 0.5 V_rms / 10 kohm Rd - Audio - R 0.5 V_rms / 10 kohm Bk - Headphone 8 - 600 Ohm / 4 mW Rear Connections

Tuning system TV Colour systems

H H j j

Video playback Channel selections Aerial input

jq jq jq ot

1.1.2

Sound Sound systems Maximum power : NICAM Stereo : 2x10/ 2x5 W_rms (int.)

75 Ohm

AUDIO OUT S

1.1.3

Miscellaneous Power supply: - Mains voltage - Mains frequency Ambient conditions: - Temperature range - Maximum humidity Power consumption - Normal operation - Standby

L R
: 220 - 240 V_ac : 50/60 Hz

EXTERNAL 2

SERVICE CONNECTOR

EXTERNAL 1
CL 36532058_080.eps 101003

: +5 to +40 deg. C : 90 % R.H. Aerial In - F-type : from 60 W (21") : to 91 W (32") : <1W

Figure 1-2 Rear connections

Coax, 75 ohm

D

1.2

Connections
Note: The following connector colour abbreviations are used (acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, Ye= Yellow.

Audio Out 1 - Subwoofer Wh - Audio - L Rd - Audio - R

Var. level (optional) 0.5 V_rms / 1 kohm 0.5 V_rms / 1 kohm

kq kq kq

Technical Specifications, Connections, and Chassis Overview
External 1: RGB/YUV - In and CVBS - In/Out
20 2

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External 2: CVBS- In and SVHS - In
20 2

21

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21

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1

Figure 1-3 SCART connector 1 2 3 4 5 6 7 8 - Audio - R 0.5 V_rms / 1 kohm - Audio - R 0.5 V_rms / 10 kohm - Audio - L 0.5 V_rms / 1 kohm - Audio - gnd Ground - Blue - gnd Ground - Audio - L 0.5 V_rms / 10 kohm - Blue/U - in 0.7 V_pp / 75 ohm - CVBS - status 0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 - Green - gnd Ground - n.c. - Green/Y - in 0.7 V_pp / 75 ohm - n.c. - Red - gnd Ground - FBL - gnd Ground - Red/V - in 0.7 V_pp / 75 ohm - Status/FBL 0 - 0.4 V: INT 1 - 3 V: EXT / 75 ohm - Video Ground - Video Ground - CVBS - out 1 V_pp / 75 ohm - CVBS - in 1 V_pp / 75 ohm - Shielding Ground k j k H H j j 1 2 3 4 5 6 7 8

Figure 1-4 SCART connector - Audio - R 0.5 V_rms / 1 kohm - Audio - R 0.5 V_rms / 10 kohm - Audio - L 0.5 V_rms / 1 kohm - Audio - gnd Ground - Blue - gnd Ground - Audio - L 0.5 V_rms / 10 kohm - n.c. - CVBS - status 0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 - Green - gnd Ground - n.c. - n.c. - n.c. - Red - gnd Ground - FBL - gnd Ground - YC-C - in 0.7 V_pp / 75 ohm - n.c. - Video Ground - Video Ground - CVBS - out 1 V_pp / 75 ohm - Y/CVBS - in 1 V_pp / 75 ohm - Shielding Ground k j k H H j

9 10 11 12 13 14 15 16 17 18 19 20 21

H j H H j j H H k j H

9 10 11 12 13 14 15 16 17 18 19 20 21

H

H H j H H k j H

1.3

Chassis Overview

B1 B2 D H F1 F2

CRT ECO SCAVEM CRT PANEL

SIDE AV PANEL + HEADPHONE

TOP CONTROL PANEL

E J

LTI/CTI INTERFACE PANEL POWER SUPPLY TUNER IF & DEMODULATION PIP PANEL

FRONT INTERFACE PANEL

POWER SUPPLY LINE DEFLECTION TUNER IF HERCULES FEATURES & CONNECTIVITIES CLASS D AUDIO AMPLIFIER MONO CARRIER AUDIO AMPLIFIER REAR I/O CINCH FRONT CONTROL DVD POWER SUPPLY

A1 A2 A3 A4 A5 A6 A7 A8 A9 A10
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G

LINEARITY & PANORAMA PANEL

Figure 1-5 PWB location

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Safety and Maintenance Instructions, Warnings, and Notes

2. Safety and Maintenance Instructions, Warnings, and Notes
2.1 Safety Instructions
Safety regulations require that during a repair: Due to the chassis concept, a very large part of the circuitry (incl. deflection) is 'hot'. Therefore, connect the set to the mains via an isolation transformer. Replace safety components, indicated by the symbol h, only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard. Wear safety goggles when you replace the CRT. Safety regulations require that after a repair, you must return the set in its original condition. Pay, in particular, attention to the following points: General repair instruction: as a strict precaution, we advise you to re-solder the solder connections through which the horizontal deflection current is flowing. In particular this is valid for the: 1. Pins of the line output transformer (LOT). 2. Fly-back capacitor(s). 3. S-correction capacitor(s). 4. Line output transistor. 5. Pins of the connector with wires to the deflection coil. 6. Other components through which the deflection current flows. Note: This re-soldering is advised to prevent bad connections due to metal fatigue in solder connections, and is therefore only necessary for television sets more than two years old. Route the wire trees and EHT cable correctly and secure them with the mounted cable clamps. Check the insulation of the mains cord for external damage. Check the strain relief of the mains cord for proper function, to prevent the cord from touching the CRT, hot components, or heat sinks. Check the electrical DC resistance between the mains plug and the secondary side (only for sets that have an isolated power supply). Do this as follows: 1. Unplug the mains cord and connect a wire between the two pins of the mains plug. 2. Turn on the main power switch (keep the mains cord unplugged!). 3. Measure the resistance value between the pins of the mains plug and the metal shielding of the tuner or the aerial connection of the set. The reading should be between 4.5 M and 12 M. 4. Switch the TV 'off' and remove the wire between the two pins of the mains plug. Check the cabinet for defects, to prevent the possibility of the customer touching any internal parts.

2.3

Warnings
In order to prevent damage to ICs and transistors, avoid all high voltage flashovers. In order to prevent damage to the picture tube, use the method shown in Fig. 2-1, to discharge the picture tube. Use a high voltage probe and a multi-meter (position V_dc). Discharge until the meter reading is 0 V (after approx. 30 s).

V

E_06532_007.eps 250304

Figure 2-1 Discharge picture tube All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD, w). Careless handling during repair can reduce life drastically. Make sure that, during repair, 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 potential. Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and ground cable) 4822 310 10671. Wristband tester 4822 344 13999. Together with the deflection unit and any multi-pole unit, flat square picture tubes form an integrated unit. The deflection and the multi-pole units are set optimally at the factory. We do not recommend adjusting this unit during repair. Be careful during measurements in the high voltage section and on the picture tube. Never replace modules or other components while the unit is 'on'. When you align the set, use plastic rather than metal tools. This will prevent any short circuits and the danger of a circuit becoming unstable.





2.4
2.4.1

Notes
General Measure the voltages and waveforms with regard to the chassis (= tuner) ground (H), or hot ground (I), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode (see chapter 5) with a color bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or 61.25 MHz for NTSC (channel 3). Where necessary, measure the waveforms and voltages with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in standby (F). These values are indicated by means of the appropriate symbols.

2.2

Maintenance Instructions
We recommend a maintenance inspection carried out by qualified service personnel. The interval depends on the usage conditions: When a customer uses the set under normal circumstances, for example in a living room, the recommended interval is three to five years. When a customer uses the set in an environment with higher dust, grease, or moisture levels, for example in a kitchen, the recommended interval is one year. The maintenance inspection includes the following actions: 1. Perform the 'general repair instruction' noted above. 2. Clean the power supply and deflection circuitry on the chassis. 3. Clean the picture tube panel and the neck of the picture tube.





Safety and Maintenance Instructions, Warnings, and Notes
The picture tube panel has printed spark gaps. Each spark gap is connected between an electrode of the picture tube and the Aquadag coating. The semiconductors indicated in the circuit diagram and in the parts lists, are interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors.

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2.4.2

Schematic Notes All resistor values are in ohms and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 kohm). Resistor values with no multiplier may be indicated with either an "E" or an "R" (e.g. 220E or 220R indicates 220 ohm). All capacitor values are expressed in micro-farads (= x 10^-6), nano-farads (n= x 10^-9), or pico-farads (p= x 10^-12). Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF). An "asterisk" (*) indicates component usage varies. Refer to the diversity tables for the correct values. The correct component values are listed in the Electrical Replacement Parts List. Therefore, always check this list when there is any doubt.

Adjust your solder tool so that a temperature around 217 - 220 deg. C is reached at the solder joint. Do not mix lead-free soldering tin with leaded soldering tin; this will lead to unreliable solder joints! Use only original spare parts listed in this manual. These are lead-free parts! On the website www.atyourservice.ce.philips.com you can find more information on: Aspects of lead-free technology. BGA (de-)soldering, heating-profiles of BGAs used in Philips sets, and others







2.4.3

Practical Service Precautions It makes sense to avoid exposure to electrical shock. While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard. Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions - reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution. Before powering up the TV set with the back cover off (or on a test fixture), attach a clip lead to the CRT DAG ground and to a screwdriver blade that has a well insulated handle. After the TV is powered "on" and high voltage has developed, probe the anode lead with the blade, starting at the case of the High Voltage Transformer (flyback - IFT). Move the blade to within two inches of the connector of the CRT. If there is an arc, you found it the easy way, without getting a shock! If there is an arc to the screwdriver blade, replace the part that is causing the problem: the High Voltage Transformer or the lead (if it is removable).





2.4.4

Lead Free Solder This set is manufactured with lead-free production technology. This is also indicated on the PWB by the PHILIPS lead-free logo (either by a service-printing or by a sticker).

P

b

Figure 2-2 Lead-free logo This set is produced with lead-free solder alloy as well as with lead-free sub-parts. It can be considered as lead-free. Due to this fact, some rules have to be respected by the workshop during a repair: Use only lead-free soldering tin Philips SAC305 with order code 0622 149 00106. If lead-free solder paste is required, please contact the manufacturer of your soldering equipment. Use only adequate solder tools applicable for lead-free soldering tin.

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Directions for Use

3. Directions for Use
You can download this information from the following website: http://www.philips.com/support 1. Click on "Downloads and Troubleshooting" [1]. 2. Fill in the TV model/type number in the field "Which Model/ Type?" [2] and click on "Search" [3]. Note: The correct model/typenumber can be found on the rear cover of the set. If you do not have the complete model/typenumber, just fill in e.g. "32PW95" or "PW95" (do not use wildcards). 3. When results are returned, click on the desired model/ typenumber under "Model" [4]. 4. Now, click on the "Owner's manual" [5] in the desired language. To read/open the PDF files you can download and install the free Acrobat Reader http://www.adobe.com/products/acrobat/readstep2.html

1

3

2

4

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Figure 3-1 Screenshot DFU website (1)

5

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Figure 3-2 Screenshot DFU website (2)

Mechanical Instructions

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4. Mechanical Instructions
Index of this chapter: 1. Set Disassembly 2. Service Position 3. Assies/Panels Removal 4. Set Re-assembly Note: Figures below can deviate slightly from the actual situation, due to different set executions. 1. Disconnect the degaussing coil [1]. 2. Release the two fixation clamps (at the mid left and mid right side of the bracket), and remove the bracket from the bottom tray, by pulling it backwards [2]. 3. Turn the chassis tray 90 degrees counter clockwise. 4. Move the panel bracket somewhat to the left and flip it 90 degrees [3], with the components towards the CRT. 5. Turn the panel bracket with the rear I/O toward the CRT. 6. Place the hook of the tray in the fixation hole of the cabinet bottom [4] and secure it.

4.1

Set Disassembly
Warning: Be sure to disconnect the AC power from the set before opening it.

4.3
4.3.1

Assies/Panels Removal
Front Interface Assy/Panel Removal

4.1.1

Rear Cover 1. Remove all fixation screws of the rear cover (do not forget the screws that hold the rear connection panel). 2. Pull the rear cover backwards to remove it.

4.2

Service Position
Before placing the Mono Carrier in its service position, remove the Front Interface assy/panel (see paragraph "Front Interface Assy/Panel removal"), the Side AV assy/panel (see paragraph "Side AV Assy/Panel removal") and the PIP assy/panel (if exists) (see paragraph "PIP Assy/Panel removal").
2

1 1

3 3
E_14480_049.eps 110204

Figure 4-2 Front interface assy/panel removal 1. Remove the complete module from the bottom plate, by pulling the two fixation clamps upward [1], while sliding the module away from the CRT [2]. Note: these clamps are difficult to access. 2. Release the two fixation clamps [3] at the side of the bracket, and lift the panel out of the bracket (it hinges at one side).
1

4.3.2

Side AV Assy/Panel Removal

2

A

3

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4

Figure 4-3 Side AV assy/panel removal
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B

Figure 4-1 Service position Mono Carrier

1. Remove the two fixation screws, and remove the complete Side AV assembly. 2. Release the two fixation clamps, and lift the panel out of the bracket.

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4.3.3

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Mechanical Instructions

LTI/CTI Interface Panel Removal Remove the LTI/CTI Interface panel from the Mono Carrier, by disconnecting it from connector 1212.

4.3.4

Top Control Assy/Panel Removal Notes: PV02 styling: assy is mounted in the front cabinet; FL13B styling: assy is mounted in the rear cover. 1. Remove the two fixation screws. 2. Push the assy a little bit upwards, and then pull it backwards to release it from the front hinge. 3. Lift the panel from its bracket, while releasing the four fixation clamps.

4.3.5

Linearity Assy/Panel Removal

2

1 1

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Figure 4-4 Linearity assy/panel removal 1. Release the two fixation clamps [1] to lift the panel out of the bracket [2]. 4.3.6 PIP Assy/Panel Removal 1. Release the two fixation clamps to lift the panel out of the bracket.

4.4

Set Re-assembly
To re-assemble the whole set, do all processes in reverse order. Note: before you mount the rear cover, perform the following checks: 1. Check whether the AC power cord is mounted correctly in its guiding brackets. 2. Check whether all cables are replaced in their original position

Service Modes, Error Codes, and Fault Finding

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5. Service Modes, Error Codes, and Fault Finding
Index: 1. Test Points. 2. Service Modes. 3. Problems and Solving Tips (related to CSM). 4. ComPair. 5. Error Codes. 6. The Blinking LED Procedure. 7. Protections. 8. Repair Tips. Table 5-2 Software cluster overview
SW Clusters SW Version L4LEF1 L04EF11.0 First Mask TDA12020H1/N1B11 TDA12021H1/N1B11 TDA12020H1/N1B11 TDA12021H1/N1B11 TDA12020H1/N1B11 TDA12021H1/N1B11 TDA12020H1/N1B11 TDA12021H1/N1B11 TDA12020H1/N1B11 TDA12021H1/N1B11 TDA12020H1/N1B11 TDA12021H1/N1B11 TDA12020H1/N1B11 Remarks Western Europe Radio 4:3 set only. Eastern Europe Radio 4:3 set only. Western Europe PIP Eastern Europe PIP Western Europe Radio & PIP. Eastern Europe Radio & PIP. ICON UI

L4LEF2

L04EF21.0

L4LEF3

L04EF31.0

5.1

Test Points
The chassis is equipped with test points printed on the circuit board assemblies. These test points refer to the functional blocks: Table 5-1 Test point overview
L4LEF6 Test point Circuit Diagram A1 L4LEF7 A2 L04EF71.0 F508, F535, F536, F537, F552, F561, F563, Power supply F573, F664,I513, I518, I519, I524, I531, I533, I546 F401, F412, F413, F414, F418, F452, F453, F455, F456, F458, F459, F460, F461, I408, I416, I417, I420, I462, I468 F003, F004, I001, I002 F201, F203, F205, F206 F240, F241, F242 F952, F955, I951, I952 F692 F331, F332, F333, F338, F339, F341, F351, F353, F354 F361, F362, F381, F382 Line + Frame Deflection Tuner IF Hercules Features & Connectivities Audio Amplifier Front Control CRT Panel ECO Scavem L04EF61.0 L4LEF4 L04EF41.0

L4LEF5

L04EF51.0

5.2.1
A3 A4 A5 A7 A9 B1 B2

Service Default Mode (SDM) Purpose To create a predefined setting for measurements to be made. To override software protections. To start the blinking LED procedure. Specifications Tuning frequency: 475.25 MHz. Colour system: PAL/SECAM. All picture settings at 50% (brightness, colour contrast, hue). Bass, treble and balance at 50 %; volume at 25 %. All service-unfriendly modes (if present) are disabled. The service unfriendly modes are: Timer / Sleep timer. Child / parental lock. Blue mute. Hotel / hospital mode. Auto shut off (when no 'IDENT' video signal is received for 15 minutes). Skipping of non-favourite presets / channels. Auto-storage of personal presets. Auto user menu time-out. Auto Volume Levelling (AVL). How to enter To enter SDM, use one of the following methods: Press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the 'MENU' button (do not allow the display to time out between entries while keying the sequence). Short jumper wires 9252 and 9275 on the family board (see Fig. 8-1) and apply mains. Then press the power button (remove the short after start-up). Caution: Entering SDM by shorting wires 9252 and 9275 will override the +8V-protection. Do this only for a short period. When doing this, the service-technician must know exactly what he is doing, as it could damage the television set. Or via ComPair (with the ComPair `Tools', it should be possible to enter SDM via the ComPair interface). After entering SDM, the following screen is visible, with SDM in the upper right corner of the screen to indicate that the television is in Service Default Alignment Mode.

Perform measurements under the following conditions: Television set in Service Default Alignment Mode. Video input: Colour bar signal. Audio input: 3 kHz left channel, 1 kHz right channel.

5.2

Service Modes
Service Default mode (SDM) & Service Alignment Mode (SAM) offers several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the call centre and the customer. This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the abilities of structured troubleshooting, error code reading, and software version readout for all these chassis. Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD-ROM drive (see "ComPair" section).

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Service Modes, Error Codes, and Fault Finding

00028 L04EF30.10 SDM ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000

00028 L04EF30.10 ERR 0 0 0 0 0

SAM

OP 000 057 140 032 120 128 000 . Clear . Options . AKB . Tuner . 2 Tuner PIP* . White Tone . Geometry . Audio . NVM Editor . ComPair Clear ? On

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Figure 5-1 SDM menu How to navigate Use one of the following methods: When you press the MENU button on the remote control, the set will switch on the normal user menu in the SDM mode. On the TV, press and hold the 'VOLUME down' and press the 'CHANNEL down' for a few seconds, to switch from SDM to SAM and reverse. How to exit Switch the set to STANDBY by pressing the POWER button on the remote control transmitter or the television set. If you turn the television set off by removing the Mains (i.e., unplugging the television) without using the POWER button, the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared. 5.2.2 Service Alignment Mode (SAM) Purpose To change option settings. To display / clear the error code buffer. To perform alignments. Specifications Run timer (maximum five digits displayed) Software version, Error & Option Bytes display Clear error buffer. Option settings AKB switching Software alignments (Tuner, 2 Tuner PIP, White Tone, Geometry & Audio) NVM Editor ComPair Mode switching How to enter To enter SAM, use one of the following methods: Press the following key sequence on the remote control transmitter: '0 6 2 5 9 6' directly followed by the "On Screen Display icon "i +" button (do not allow the display to time out between entries while keying the sequence). Or via ComPair. After entering SAM, the following screen is visible, with SAM in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.

on
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* optional
Figure 5-2 SAM menu

Menu explanation 1. LLLLL. This represents the run timer. The run timer counts normal operation hours, but does not count standby hours (maximum four digits displayed). 2. AAABCD-X.Y. This is the software identification of the main microprocessor: A = the project name (L04). B = the region: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM. C = the software diversity: Europe: T = 1 page TXT, F = Full TXT, V = Voice control. LATAM and NAFTA: N = Stereo non-dBx, S = Stereo dBx. Asian Pacific: F = Full TXT, N = non TXT, C = NTSC. ALL regions: M = mono, D = DVD, Q = Mk2. D = the language cluster number. X = the main software version number (updated with a major change that is incompatible with previous versions). Y = the sub software version number (updated with a minor change that is compatible with previous versions). 3. SAM. Indication of the Service Alignment Mode. 4. Error Buffer. Shows all errors detected since the last time the buffer was erased. Five errors possible. 5. Option Bytes. Used to set the option bytes. See 'Options' in the Alignments section for a detailed description. Seven codes are possible. 6. Clear. Erases the contents of the error buffer. Select the CLEAR menu item and press the MENU RIGHT key. The content of the error buffer is cleared. 7. Options. Used to set the option bits. See 'Options' in the Alignments section for a detailed description. 8. AKB. Used to disable (Off) or enable (On) the 'black current loop' (AKB = Auto Kine Bias). 9. Tuner. Used to align the tuner. See 'Tuner' in the Alignments section for a detailed description. 10. 2 Tuner PIP. Used to align the tuner PIP (optional) 11. White Tone. Used to align the white tone. See 'White Tone' in the Alignments section for a detailed description. 12. Geometry. Used to align the geometry settings of the television. See 'Geometry' in the Alignments section for a detailed description. 13. Audio. No audio alignment is necessary for this television set.

Service Modes, Error Codes, and Fault Finding
14. NVM Editor. Used to change the NVM data in the television set. 15. ComPair Mode. Used to switch on the television to ISP mode (for uploading software) How to navigate In SAM, select menu items with the MENU UP/DOWN keys on the remote control transmitter. The selected item will be highlighted. When not all menu items fit on the screen, use the MENU UP/DOWN keys to display the next / previous menu items. With the MENU LEFT/RIGHT keys, it is possible to: Activate the selected menu item. Change the value of the selected menu item. Activate the selected submenu. In SAM, when you press the MENU button twice, the set will switch to the normal user menus (with the SAM mode still active in the background). To return to the SAM menu press the MENU or STATUS/EXIT button. When you press the MENU key in while in an SDAM submenu, you will return to the previous menu. How to store SAM settings To store settings changed in SAM leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. How to exit Switch the set to STANDBY by pressing the POWER button on the remote control transmitter or the television set. If you turn the television set off by removing the mains (i.e., unplugging the television) without using the POWER button, the television set will remain in SAM when mains is re-applied, and the error buffer is not cleared. 5.2.3 Customer Service Mode (CSM) Purpose The Customer Service Mode shows error codes and information on the TV operation settings. The call centre can instruct the customer to enter CSM by telephone and read off the information displayed. This helps the call centre to diagnose problems and failures in the TV set before making a service call. The CSM is a read-only mode; therefore, modifications are not possible in this mode. How to enter To enter CSM, press the following key sequence on the remote control transmitter: '1 2 3 6 5 4' (do not allow the display to time out between entries while keying the sequence). Upon entering the Customer Service Mode, the following screen will appear:

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1 00028 L04EF30.10 CSM 2 CODES 0 0 0 0 0 3 OP 000 057 140 032 120 128 000 4 nnXXnnnn/nnX 5 P3C-1 6 NOT TUNED 7 PAL 8 STEREO 9 CO 50 CL 50 BR 50 HU 0 0 AVL Off BS 50

E_14480_141.eps 250504

Figure 5-3 CSM menu Menu explanation 1. Indication of the service mode (CSM = Customer Service Mode). 2. Reserved item. 3. Software identification of the main microprocessor (see 'Service Default Alignment Mode' for an explanation) 4. Reserved item for P3C call centres (AKBS stands for Advanced Knowledge Base System). 5. Indicates the type of TV system or whether or not the television is receiving an 'IDENT' signal on the selected source. If no 'IDENT' signal is detected, the display will read 'NOT TUNED' 6. Displays the last five errors detected in the error code buffer. How to exit To exit CSM, use one of the following methods: Press the MENU, STATUS/EXIT, or POWER button on the remote control transmitter. Press the POWER button on the television set.

5.3
5.3.1

Problems and Solving Tips Related to CSM
Picture Problems Note: The problems described below are all related to the TV settings. The procedures used to change the value (or status) of the different settings are described. Picture too dark or too bright If: The picture improves when you have press the AUTO PICTURE button on the remote control transmitter, or The picture improves when you enter the Customer Service Mode Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys (if necessary) to select BRIGHTNESS. 6. Press the MENU LEFT/RIGHT keys to increase or decrease the BRIGHTNESS value. 7. Use the MENU UP/DOWN keys to select PICTURE.

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Service Modes, Error Codes, and Fault Finding
Menu text not sharp enough If: The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter. Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select PICTURE. 6. Press the MENU LEFT key to decrease the PICTURE value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored.

8. Press the MENU LEFT/RIGHT keys to increase or decrease the PICTURE value. 9. Press the MENU button on the remote control transmitter twice to exit the user menu. 10. The new PERSONAL preference values are automatically stored. White line around picture elements and text If: The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select SHARPNESS. 6. Press the MENU LEFT key to decrease the SHARPNESS value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored. Snowy picture To enter CSM, press the following key sequence on the remote control transmitter: '123654' (do not allow the display to time out between entries while keying the sequence). Check CSM line 5. If this line reads 'Not Tuned,' check the following: Antenna not connected. Connect the antenna. No antenna signal or bad antenna signal. Connect a proper antenna signal. The tuner is faulty (in this case line 6, the Error Buffer line, will contain error number 10). Check the tuner and replace/ repair the tuner if necessary. Black and white picture If: The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu (if necessary). 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select COLOR. 6. Press the MENU RIGHT key to increase the COLOR value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored.

5.4
5.4.1

ComPair
Introduction ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development on the European DST (service remote control), which allows faster and more accurate diagnostics. ComPair has three big advantages: ComPair helps you to quickly get an understanding on how to repair the chassis in a short time by guiding you systematically 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 because ComPair takes care of this. ComPair speeds up the repair time since it can automatically communicate with the chassis (when the microprocessor is working) and all repair information is directly available. When ComPair is installed together with the SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away.

5.4.2

Specifications ComPair consists of a Windows based faultfinding 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 this chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector. The ComPair faultfinding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: Automatic (by communication with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I2C level. ComPair can access the I2C bus of the television. ComPair can send and receive I2C commands to the micro controller of the television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I2C busses of the TV-set. Manually (by asking questions to you): 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 faultfinding tree by asking you questions (e.g. Does the screen give a picture? Click on the correct answer: YES /

Service Modes, Error Codes, and Fault Finding
NO) and showing you examples (e.g. Measure test-point I7 and click on the correct waveform you see on the oscilloscope). You can answer by clicking on a link (e.g. text or a waveform picture) that will bring you to the next step in the faultfinding process. 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. Beside fault finding, ComPair provides some additional features like: Up- or downloading of pre-sets. Managing of pre-set lists. Emulation of the Dealer Service Tool (DST). If both ComPair and SearchMan (Electronic Service Manual) are installed, all the schematics and the PWBs of the set are available by clicking on the appropriate hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Mono-carrier. Click on the 'Panel' hyperlink to automatically show the PWB with a highlighted capacitor C2568. Click on the 'Schematic' hyperlink to automatically show the position of the highlighted capacitor. 5.4.3 How To Connect ComPair 1. First, install the ComPair Browser software (see the Quick Reference Card for installation instructions). 2. Connect the RS232 interface cable between a free serial (COM) port of your PC and the PC connector (marked with 'PC') of the ComPair interface. 3. Connect the mains adapter to the supply connector (marked with 'POWER 9V DC') of the ComPair interface. 4. Switch the ComPair interface "off". 5. Switch the television set "off" with the mains switch. 6. Connect the ComPair interface cable between the connector on the rear side of the ComPair interface (marked with 'I2C') and the ComPair (or Service) connector at the rear side of the TV (for its location see figure 8-1 in chapter "Alignments"). 7. Plug the mains adapter in a mains outlet, and switch the interface "on". The green and red LEDs light up together. The red LED extinguishes after approx. 1 second while the green LED remains lit. 8. Start the ComPair program and read the 'Introduction' chapter.

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SearchMan32 CD (update): 3122 785 60080 (year 2002), 3122 785 60120 (year 2003). ComPair interface cable: 3122 785 90004. Transformer (non-UK): 4822 727 21632. Transformer UK: 4822 727 21633.

Note: If you encounter any problems, contact your local support desk.

5.5

Error Codes
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right.

5.5.1

How To Read The Error Buffer You can read the error buffer in 3 ways: On screen via the SDAM (if you have a picture). 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: 9 6 0 0 0 : Error code 6 was detected first and error code 9 is the last detected (newest) error Via the blinking LED procedure (when you have no picture). See 'The Blinking LED Procedure'. Via ComPair.

5.5.2

How To Clear The Error Buffer The error code buffer is cleared in the following cases: By using the CLEAR command in the SDAM menu: To enter SAM, press the following key sequence on the remote control transmitter: '062596' directly followed by the "OSD" icon button (do not allow the display to time out between entries while keying the sequence). Make sure the menu item CLEAR is highlighted. Use the MENU UP/DOWN buttons, if necessary. Press the MENU RIGHT button to clear the error buffer. The text on the right side of the 'CLEAR' line will change from 'CLEAR?' to 'CLEARED' If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically. Note: If you exit SAM by disconnecting the Mains from the television set, the error buffer is not reset.

TO SERVICE CONNECTOR

5.5.3

Error Codes In case of non-intermittent faults, write down the errors present in the error buffer and clear the error buffer before you begin the repair. This ensures that old error codes are no longer present. If possible, check the entire contents of the error buffer. In some situations, an error code is only the result of another error and not the actual cause of the problem (for example, a fault in the protection detection circuitry can also lead to a protection).

PC

VCR

Power 9V DC

I2C

E_06532_008.eps 190204

Figure 5-4 ComPair connection 5.4.4 How To Order ComPair order codes: Starter kit ComPair32/SearchMan32 software and ComPair interface (excl. transformer): 3122 785 90450. ComPair interface (excluding transformer): 4822 727 21631. Starter kit ComPair32 software (registration version): 3122 785 60040. Starter kit SearchMan32 software: 3122 785 60050. ComPair32 CD (update): 3122 785 60070 (year 2002, 3122 785 60110 (year 2003).

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Service Modes, Error Codes, and Fault Finding

Table 5-3 Error codes overview Error 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Device Error description Check item Diagram

Not applicable No Error Not applicable X-Ray / over-voltage protection (US only) Not applicable High beam (BCI) protection Not applicable Vertical guard protection Tuner UA1316/A I2C bus I2C error while communicating with 2nd tuner 2411, 2412, 2413, 6404, 6411, A2 6412. 3404, 7405 1000, 5010 (PIP Module) 7604, 7605 7200, 3207, 3214 7601, 3604, 3605 1000, 5001 7330, 3351, CRT 7242 (PIP Module) DVD Interface module 7610 7201 A2 F2 A5 A4 A5 A3 B1 F1 DVD Loader H F2 A4 A4 3466, 7451, 7452, 7453, 7454 A2

Not applicable +5v protection General I2C error Not applicable Not applicable 24C16 Tuner TDA6107/A SDA9488X DVD Loader TDA9887 I2C error while communicating with the EEPROM = I2C error while communicating with the PLL tuner Black current loop instability protection I2C error while communicating with the PIP processor I2C error while communicating with the DVD Interface module I2C error while communicating with PIP_Demodulator

Not applicable TDA9178T/N1 I2C error while communicating with LTI module Not applicable Not applicable TDA1200 TDA1200

I2C error while communicating with SSD stereo sound decoder 7200 I2C error while communicating with video cosmic in Hercules IC 7200

Note: Errors 7, 8, 13, 17, 18 are not applicable.

5.8

Fault Finding and Repair Tips
Notes: It is assumed that the components are mounted correctly with correct values and no bad solder joints. Before any fault finding actions, check if the correct options are set.

5.6

The Blinking LED Procedure
Using this procedure, you can make the contents of the error buffer visible via the front LED. This is especially useful when there is no picture. When the SDM is entered, the LED will blink the contents of the error-buffer: When all the error-codes are displayed, the sequence finishes with an 'on' LED blink of 1.5 seconds, The sequence starts again. Example of error buffer: 12 9 6 0 0 After entering SDM, the following occurs: 1 long 'on' blink of 5 seconds to start the sequence, 12 short blinks followed by a pause of 1.5 seconds, 9 short blinks followed by a pause of 1.5 seconds, 6 short blinks followed by a pause of 1.5 seconds, 1 long 'on' blink of 1.5 seconds to finish the sequence, The sequence starts again at 12 short blinks. 5.8.1

NVM Editor In some cases, it can be handy if one directly can change the NVM contents. This can be done with the "NVM Editor" in SAM mode. In the next table, the default NVM values are given.

5.7

Protections
If a fault situation is detected, an error code will be generated; and, if necessary, the television set will go into protection mode. Blinking of the red LED at a frequency of 3 Hz indicates the protection mode. In some error cases, the microprocessor does not put the set in protection mode. The error codes of the error buffer and the blinking LED procedure can be read via the Service Default Menu (SDM), or via ComPair. To get a quick diagnosis the chassis has three service modes implemented: The Customer Service Mode (CSM). The Service Default Mode (SDM). The Service Alignment Mode (SAM). For a detailed description, see the "Customer Service Mode, Service Default mode" and "Service Alignment Mode" sections.

Service Modes, Error Codes, and Fault Finding
Table 5-4 NVM default values Address (dec) 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 36 37 38 39 40 41 Value (hex) 25 0A 1A 1F 1F 1E 28 1A 25 1E 1C 1A 19 20 20 1E 20 1 9 0A 0F 5.8.2 Power Supply Set Not Working
Check Power Supply Mains Switch

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EW (EW width) PW (EW parabola width) HS (Horizontal shift) HP (Horizontal parallelogram) HB (Horizontal Bow) UCP (EW upper corner parabola) LCP (EW lower corner parabola) TC (EW trapezium) VS (Vertical slope) VA (Vertical amplitude) SC (S-Correction) VSH (Vertical Shift) VX (Vertical Zoom) VSL (Vertical scroll) VL (Vertical linearity) AGC (AGC Takeover) OIF (IF-PLL Offset) AGC10 (AGC 10) H60 (60 Hz Horizontal Shift) PF_SC_PWL (Peaking Frequency, Soft Clipper, Peak White Limit) COR (Phase 1 time constant, Video Dependant Coring, Ratio & White stretch) 60 Hz Vertical amplitude YD & CL RGB amplitude for full teletext mode NVM_TABLE_VERSION OPTION_TABLE_VERSION CVI_BLOR CVI_BLOG TXT Brightness V60 offset (60Hz Vertical Amplitude) FOAB, CHSE SPR, WS VMA, SVM NVM_SOC_SMD CCC_Preset_Gain_Red CCC_Preset_Gain_Green CCC_Preset_Gain_Blue NVM_FMWS NVM_ASD_SC1_THR NVM_CRYSTAL_ALIGN Last Brightness (VID PP others) Last Color (VID PP others) Last Contrast (VID PP others) Last Sharpness (VID PP others) Last Hue (VID PP others) Last Colour Temperature (VID PP others) White-D Cool Red White-D Cool Blue White-D Normal Red White-D Normal Green White-D Normal Blue White-D Warm Red White-D Warm Blue Last Volume Last Balance Last Treble (AUD PP others) Last Bass (AUD PP others)

Bridge Rectifier circuit 6500

Not Ok

Check fusible resistor 3510 & circuit before it

Ok

Check DC voltage at 2505/2507

Not Ok

Ok

Check fusible resistor 3532

Check 7512

Check IC7511 & IC7531

Ok Check other fusible resistor and capacitor in the circuit

Set able to start-up

No

Yes

42 43 46 60 61 62 63 64 66 139 140 141 142 143 144 145 149 150 208 264 265 266 267 268 269 294 296 297 298 299 300 302 343 344 345 346

40 2 0C 26 11 1E 1C 0F FE 3 0 31 33 1F 1F 1F 2 10 4F 34 2C 4B 37 32 0D FD 8 22 20 1B 2 FA 19 32 32 32

End
E_14480_057.eps 190204

Figure 5-5 Fault finding tree "Set not working" Set Does Not Start Up
Set Unable to Start

Software loaded?

No

Fuse Blown?

Yes

Change Fuse

Yes

Load Software Check voltage across 2552

Is Vbatt approximately 140V

No

Check Power Supply circuit

Yes Check voltage 2562 &2563 No 16V

Yes

Check 3V across 2535 Yes Check 6V across 2535

Yes

Set able to Start

No

Check Line Transistor 7405

Yes

End

E_14480_058.eps 170204

Figure 5-6 Fault finding tree "Set does not start up"

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5.8.3

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Service Modes, Error Codes, and Fault Finding
Blank Screen
Blank Screen

Deflection One Thin Vertical Line Quick check: Set in protection mode. LED blinking with error "3".

Check Vg2 (fine tune)

Ok

Picture appears?

One Thin Vertical Line LED Blinking
Not Ok Picture not appearing

Check all connection and peripheral at Deflection Circuit in place

Check Beam Current Limit (voltage is 1.8V-2V when brightness and contrast is set to the maximum

Not Ok

Check deflection circuit

Ok

Check Line Transistor 7405

Check heater voltage (measure pin 9&10 at the CRT socket)

Picture not appearing

Ok

Not Ok Check video supply (2457) is approximately 180V

Is VBE between 200mV to 30mV & VCB approximately 500mV

Yes

Check Horizontal Deflection Circuitry

Ok

Picture appears?

Ok

Replace transistor
E_14480_059.eps 170204

End
E_14480_061.eps 170204

Figure 5-7 Fault finding tree "One thin vertical line" One Thin Horizontal Line Quick check: Set in protection mode. LED blinking with error "2".

Figure 5-9 Fault finding tree "Blank screen" 5.8.4 Source Selection Set is not able to go into AV or any missing AV is encountered E.g. AV1 is available but not able to enter to AV1: Check if the option setting is correct. Set is able to go to AV, but no audio is heard. 1. Check that continuity of signal is there from the SCART/ Cinch input to the input of the Hercules. 2. If continuity is there and still no audio, check that option settings are correct. 3. If logic setting is correct and still no audio, proceed to Audio Decoder/Processor troubleshooting section. Set is able to go into AV but no video is available: 1. Check continuity from AV input to HERCULES depending on the input. 2. If continuity is available and yet no video, proceed to Video Processor troubleshooting section.

One Horizontal Thin Line LED Blinking

Check all connection and peripheral at Deflection Circuit in place

Check transistor (7451, 7523, 7543) at Vertical Deflection Circuitry

Replace transistor

5.8.5

Tuner and IF No Picture 1. Check that the Option settings are correct. 2. If correct, check that supply voltages are there. 3. If supply voltages are present, check whether picture is present in AV. 4. If picture is present in AV, check with the scope the Tuner IF output signal by manual storage to a known channel.

Check Vertical Deflection Circuit
E_14480_060.eps 170204

Figure 5-8 Fault finding tree "One thin horizontal line"

Service Modes, Error Codes, and Fault Finding
5. If IF output is present, Tuner is working fine. If no IF output, I2C data lines may be open, check continuity of I2C lines. If I2C lines are ok, Tuner may be defect, replaced Tuner. 6. If Tuner IF is present and yet still no picture in RF mode, go to Video Processing troubleshooting section. No Picture, No Sound
No Picture, No Sound, Raster Ok Check tuning supply voltage, pin 9 of tuner
Check IF output of tuner, pin 11

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Picture Ok, No Sound
Picture Ok, No Sound

Check AGC Voltage, pin 1 of tuner Yes

>30V & <35V

No

Check VT Supply Section

CVBS present?

No

Refer to fig. "Power Supply: Set not working"

Yes

AGC voltage changes with different signal strength

Check supply voltage, pin 7 of tuner

Check SAW filter output (pin 4&5) EU/AP/CH (QSS)- 1001 NA/LA/AP INT - 1002

5V No Yes Check AGC circuit section

No

Check Power Supply

Output Ok?

No

Replace SAW filter

Check Tuner pin 4 & 5 I2C Bus
Yes

Ok

No

Check other functional area

Check other functional area
E_14480_063.eps 170204

Yes

Figure 5-11 Fault finding tree "Picture ok, no sound"
Replace Tuner
E_14480_062.eps 170204

Unable To Perform Tuning
Unable to perform tuning

Figure 5-10 Fault finding tree "No picture, no sound"

Enter SDM check optionbyte 1

Incorrect

Enter SDM and change to the appropriate byte

Correct

Check if tuner Supply Voltage pin 7

5V

No

Check Power Supply

Check I2C circuit

Replace Tuner

Yes

No

Check Tuner Supply Voltage Yes Check I2C at pin 4 & 5 and tuner

33V

Not Ok

Not Ok

Not Ok Ok I2C Check other functional area Not Ok
E_14480_064.eps 170204

Tuner

Figure 5-12 Fault finding tree "Unable to perform tuning" 5.8.6 Controller Below are some guidelines for troubleshooting of the Micro Controller function. Normally Micro Controller should be checked when there is a problem of startup. 1. Check that both +3.3 V_dc and +1.8 V_dc are present. 2. Check that crystal oscillator is working.

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Service Modes, Error Codes, and Fault Finding
5.8.8 Audio Processing No Sound
Picture Ok, No Sound

3. Check that Power Good signal is at "high" logic, normal operation. 4. Check that HERCULES is not in standby mode. Pin 15 of HERCULES should be 0 V_dc. 5. Make sure H-drive pulse is there. This can be checked at resistor R3239. If H-drive does not exist, remove resistor R3239 to check if there is loading. Note: When the set shuts down after a few second after power "on", the main cause is that Vg2 not aligned properly, try adjusting Vg2 during the few seconds of power "on". 5.8.7 Video Processing No Picture When "no picture in RF", first check if the microprocessor is functioning ok in section "Controller". If that is ok, follow the next steps. When "no picture in AV", first check if the video source selection is functioning ok in section "Source Selection". If that is ok, follow the next steps. 1. Check that normal operating conditions are met. 2. Check that there is video signal at pin 81. If no video, demodulator part of the HERCULES is faulty, replace with new HERCULES. 3. If video signal is available at pin 81, check pin 56, 57, and 58 for the RGB signal. 4. If signal is not available, try checking the BRIGHTNESS and/or CONTRAST control, and make sure it is not at zero. 5. If still with the correct settings and no video is available, proceed to the CRT/RGB amplifier diagram. For sets with TDA9178, follow steps below: 1. Put Option Byte 2 bit 4 to "0"; if video signal is not available, then check fault finding section "Controller", Section "Source Selection", and steps above. 2. If video is available but not correct, put Option Byte 2 bit 4 to "1", then check if LTI panel is present. If not, put LTI panel in the main chassis (connector 1221). 3. If LTI panel is in main chassis, check cable between LTI panel and main chassis (position is 1206). If it is connected, then the LTI panel is faulty, replace it. For sets with Scavem, and Scavem does not work, follow steps below: 1. Check Scavem coil connector (position is 1361) if connected; if not, connect it. 2. If connected, check NVM "bit storage" byte 1 bit 7; if it is not "1", set it to "1". 3. If it is "1", then check the data of the NVM addresses as in the next table. If the data is not correct, then set these addresses to diagram values. 4. If it still not works, track Scavem output from pin64 of HERCULES to CRT panel. Table 5-5 NVM default values for Scavem Description SPR, WS VMA, SVM NVM_SOC_SMD Address Address (hex) (dec) 140 141 142 8C 8D 8E Value (hex) 00 31 33

Tuner IF Ok

Not Ok

Check Tuner/IF

Ok

Check AUDOUTLSL & AUDOUTLSR pin at Hercules

Not Ok

Check Hercules IC

Ok

Check Audio Amplifier

Not Ok

Check Audio Power Supply

Check Power Supply

Ok

Check Audio Amplifier Circuit and loud speaker

Not Ok

Replace Audio Amplifier

Ok

Check NVM
E_14480_065.eps 170204

Figure 5-13 Fault finding tree "No sound" No RF audio for QSS/Inter-Carrier stereo sets. 1. Check pin 99 and 100 for SIF signal (for QSS) or pin 104 and 105 for video with SIF (for Inter-Carrier) 2. If signal is not present, check for the QSS/FMI bit settings. Check also the NVM data. 3. If signals are present and still no audio, check the audio supply voltage +8V are present. 4. If still no audio signal at Hercules output, Hercules is faulty. No AV audio. 1. Check troubleshooting methods in section "Source Selection". 2. Check the output of the Hercules to see if there is signal available. If no, check the normal operating condition and also the NVM data. 3. If still no audio signal at Hercules output, Hercules is faulty. Note: If there is audio signal at Hercules output and no audio at loudspeaker, proceed to Audio Amplifier troubleshooting methods. 5.8.9 Audio Amplifier No RF as well as AV audio at the loudspeaker: 1. Check that the normal operation condition of the amplifier is met. 2. If normal operation conditions are met, check the continuity from Hercules output to input of the amplifier. 3. If continuity is there and still no audio, check speaker wire connections. If still no audio, amplifier IC might be faulty.

Block Diagrams, Testpoint Overviews, and Waveforms

L04E AA

6.

19

6. Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
DEGAUSSING COIL

E
1010 3P

TOP CONTROL PANEL
AQUADAG

CRT 16:9

EHT CRT

(component view)

FRAME ROTATION COIL YELLOW

B
RIGHT SPEAKER

CRT PANEL
5P 1351 1361 3P

ORANGE BLUE

RED SCAVEM COIL

1332 1352
7P
RED BLACK

LEFT SPEAKER

CRT SOCKET
1381 3P

B
CRT PANEL

BLACK RED

D

SIDE A/V PANEL + HEADPHONE
1252 7P

J
1693 6P

FRONT INTERFACE

1693
6P

MAINS SWITCH

CVBS (YELLOW)
1504

LEFT (WHITE) RIGHT (RED)
1279 3P

1254 5P

1505 2P

2P

MAINS CORD 1212 1211
2P
E_14480_080.eps 170504

1278 4P

2P

HEADPHONE

to SUB WOOFER
(OPTIONAL)

5P 1280

A
1682

MONO CARRIER

F
1212 9P 9 1

PIP

(track view)
3P

3P

G
1221 1404 2P 7P 1204

LINEARITY& PANORAMA

H
NC 1215 4P

LTI/CTI INTERFACE
1214 1216 4P 5 5P
1

1206 7P

1462 3P

1464 2P 1461 2P

1220 5P

H
12P

LTI/ CTI

5401

1219 4P

1212 7P 1206

12P

1212 1207 7P

1401 5P

1219 1

1451 2P LOT

NC 1206 4P 1214 4P

TUNER

1005 3P COMPAIR CONNECTOR

TUNER

9

9P

Block Diagrams, Testpoint Overviews, and Waveforms

L04E AA

6.

20

Block Diagram Supply and Deflection
SUPPLY AND DEFLECTION
SUPPLY

G

J
1211 1

FRONT INTERFACE
1231 1212 1

ONLY FOR: 28"WSRF LA/NA 32" WSRF LA/NA 28" WS-SF LA

LINEARITY & PANORAMA 7460 ACTIVATING CIRCUIT
7462

2 MAINS SWITCH (not USA)

2 1404 4 1

2466

2464 2467

1461 4 LINEARITY AND PANORAMA CORRECTION
2474 2475

1 HOR. DEFL. COIL

1462 1 TO 1221

+9V

1463

A5
CONNECTIONS

2 3 I2SD/1

7463

DEFLECTION

A1 POWER SUPPLY
1504 Degaussing Coil 3
3507

A4 HERCULES
2240
3232
4 1 1503 7541 ENERGIZING CIRCUIT (optional) V_DG 7200-H (SYNC) 2

A2
EHTinfo

A2
Vguard

A2 LINE + FRAME DEFLECTION
+6VA Vbatt

1505

t
5500 : 5502

112

113

116

LINE
7408
F402

1506

1500 T4E

6500
AC F508

VIDEO IDENT

VERTICAL GUARD DETECTOR

HD R.G.B. BLANKING TO RGB PROC.
-9V

F412

6401 5445
F414
I433

6486 3 1 5402 7405 BU4508DX

OR 1505

EHT

DC

2505 7404 5520 9 17 18
F563 F552

TO CRT

7401 : 7403 3411 7480 : 7483 POWER-DOWN

A1
FRAME_FB

MAINS SWITCH (not USA)

B1

5551 6551

5552

MAIN SUPPLY
I513

Vbatt

PHI 1 DETECTOR

HORIZONTAL OSC.

PHI 2 DETECTOR

HORIZONTAL OUTPUT

62

HDRIVE
OR
F418

+Vbatt

8 4

HD 5562 6563 1543 -Vaudio
F561

FOCUS VG2

7511 TEA1506T
DRAIN

3513 14 11 9 3514
G

13 14

7512

I516

7207

D S

5 3 2

63 +Vaudio INTF_Y GREEN_IN 56

SANDCASTLE

E/W
+8V +8V
3497

A5
3291 HD_PIP

DRIVER I511

I519

2 2511 6

Vcc

SENSE

3532 3516

7514

10

5561 6562

6571

A5

CONTROL IC
CTRL DEMAG

+6VA 11 3571 7571 REFERENCE CIRCUIT 3575

MAIN SYNC SEPARATOR

SANDCASTLE GENERATOR

LINE OUTPUT CIRCUIT + E/W CORR.

1404 1 10 2 HOR. DEFL. COIL

3442

3451 3481 3410 2403

EHTb EHTb + EHTinfo + EHTinfo BCL PROC.

A4

6481

BCL

A5
SEE BLOCK DIAGRAM VIDEO E/W + GEOMETRY 7410
3420
I417

A4
1454

3440

7

3517

108

EW_DRIVE

7406

6

6452 6483 6453 6484
3458 3484

F452

-12V Vbatt
F453

6511 4
3518

7484 5

1 7515 TCET1103 7573 2 6573

+3V3 STANDBY CIRCUIT

3576

VIDEO/SUPPLY
F455

3498

Stdby_Con

3

A4
I573

7 7411 8 6456

FILAMENT
3485 1452

+9V
3457 2456

STANDBY SUPPLY
6512 7531 TEA1620 3 6533
3530
Vcc DRAIN

1532 1A

3532

9 EHTinfo 5531 4 6564
7561 6565 2564 6566 3565

6454 6455

POWER-DOWN A4 2x
F564

A2

97

EHTo

X-RAY PROTECTION

FRAME
+9V

3455

6459

3519

I533

14

5 6535

CONTROL IC
6
REG SOURCE

2534

10 9

2535
F536

6676 5537

+3V +6VA +6VA +6V

VERTICAL SYNC SEPARATOR

VERTICAL DIVIDER

VERTICAL SAWTHOOTH

7532
I531

12 3538

1 2

8

6536 2536

VERTICAL OUTPUT + GEOMETRY

106 107

VDRA VDRB

F460

3462

SEE BLOCK DIAGRAM VIDEO
VD 7451
3474

A5
Vguard

EHTb

1401 5 4

F461

7455

7456

3465 7454 3466

A4
F458

FILAMENT VIDEO/SUPPLY
Vbatt

3 2 1

TO 1351

B1
CRT

F537

11

AUX

6 6532
3534 3531

6537
S

D 7535 G I548 7536

Vaux 7452

7453

1491 1 2

3463

VER. DEFL. COIL
F459

3401

VT_SUPPLY
F401

F412 F508 F511 F531 F537 268V / div DC 15V5 / div DC 2V7 / div DC 0V (N.A.) F552 F561 F564 F573 130V / div DC 15V9 / div DC 9V4 / div DC 0V (N.A.) F401 F402
For IDTV only

F414

F418 F452 F453 -13V4 / div DC 190V8 / div DC
-12V
3461

A4

130V / div DC 32V8 / div DC

FRAME_FB
3471

2V / div DC 20s / div I513 I516 I519 I533 F455 F458

200V / div DC 20s / div F459

5V / div DC 20s / div F460 F461 I416 I417 I423 I433 I462 I468

100V / div DC 5s / div

100V / div DC 5s / div

2V / div DC 5s / div

100V / div DC 5s / div
HOT GROUND COLD GROUND

5V / div DC 20s / div

20 V / div DC 5ms / div

1V / div DC 5ms / div

500mV / div DC 5ms / div

500mV / div DC 5ms / div

20V / div DC 20s / div

500mV / div DC 20s / div

10V / div DC 20s / div

10V / div DC 20s / div

10V / div DC 5ms / div

5V / div DC 5ms / div

E_14480_081.eps 060504

Block Diagrams, Testpoint Overviews, and Waveforms

L04E AA

6.

21

Testpoint Overview Mono Carrier
F001 F002 F003 F004 F005 F006 F007 F008 F009 A8 A7 A7 A7 A8 A6 A8 A8 B4 F010 F011 F200 F201 F202 F203 F204 F205 F206 A7 A8 B4 C5 B5 B5 C5 C5 C6 F207 F208 F209 F210 F211 F212 F213 F214 F215 B5 B6 A5 A4 A4 A5 A5 B5 B6 F216 F217 F218 F219 F220 F221 F222 F223 F224 C6 C6 C6 B7 B7 B7 C7 B7 C6 F225 F226 F227 F228 F229 F230 F232 F233 F237 C6 B6 A4 C5 C5 B5 B5 B5 B5 F238 F239 F240 F241 F242 F243 F244 F245 F247 B4 B5 C5 C6 B6 C6 B5 C6 A6 F248 F249 F250 F251 F270 F401 F402 F404 F407 A6 A7 C6 B5 B5 C4 D6 D6 D6 F412 F414 F415 F416 F417 F418 F419 F420 F451 C6 E7 E6 E6 E5 D6 D6 D7 C8 F452 F453 F454 F455 F456 F457 F458 F459 F460 C7 D7 C7 D7 E7 E7 C7 C7 C7 F461 F462 F463 F464 F465 F466 F500 F501 F502 C7 E7 D8 E5 E5 E8 C2 D2 D2 F503 F504 F505 F506 F507 F508 F509 F510 F535 E2 E2 E2 E2 E2 E3 E4 D5 C4 F536 F537 F541 F542 F551 F552 F561 F562 F563 C5 C3 C3 C3 C5 D5 C4 D4 C4 F564 F573 F581 F582 F583 F682 F683 F685 F691 C5 C5 B3 B4 C4 B1 B1 B1 C1 F692 F693 F694 F695 F696 F697 F698 F699 F701 D1 E1 C1 C1 D1 E1 C1 D1 C8 F702 F703 F704 F705 F706 F707 F708 F709 F710 C8 C8 C8 B8 C8 B8 B8 B8 B8 F711 F712 F713 F714 F715 F716 F717 F718 F719 C8 B8 B8 B8 B7 A8 A8 A8 B8 F731 F732 F733 F734 F735 F736 F737 F738 F739 C8 C8 C8 C8 B8 B7 B8 B7 B8 F751 F752 F901 F903 F904 F905 F910 F911 F950 A7 A7 B3 B2 B1 B2 B3 B3 B3 F951 F952 F953 F955 I001 I002 I003 I004 I005 B3 A3 A3 A3 A8 A8 A7 A7 A5 I006 I007 I008 I009 I010 I011 I012 I013 I014 A5 A7 A5 A5 A5 A7 A7 A6 A8 I015 I016 I017 I201 I203 I204 I205 I206 I207 A8 A7 B5 A5 A5 A5 A5 A5 B6 I208 I209 I210 I211 I212 I213 I214 I215 I216 C5 B6 B6 B6 B6 A5 A5 A6 B6 I217 I218 I219 I222 I223 I224 I225 I226 I227 B7 B6 B6 B5 B5 B4 B5 B6 A5 I228 I229 I230 I231 I232 I233 I234 I235 I236 B5 C5 B5 B5 A7 B7 A4 B5 B5 I240 I241 I401 I402 I403 I404 I405 I406 I407 A4 A4 E7 E6 E7 E7 E7 E7 E8 I409 I410 I412 I413 I414 I415 I416 I417 I418 E8 E6 E6 C6 D6 C6 C5 D5 D6 I419 I421 I422 I423 I424 I425 I426 I427 I428 I429 I430 I431 I432 I433 I434 I443 I444 I445 I446 I448 I449 I451 I452 I453 I455 I456 I457 I458 I459 I460 I461 I462 I463 I464 I465 I466 I467 I468 I469 I470 I471 I472 I473 I474 I475 I501 I502 I503 I504 I505 I506 I507 I511 I513 I514 I515 I516 I517 I518 I519 I520 I521 I523 I524 I527 I529 I531 I532 I533 I535 I536 I537 I538 I539 I540 I541 I542 I543 I544 I545 I546 I547 I548 I551 I552 I553 I554 I555 I556 I557 I561 I562 I565 I571 I572 I573 C6 D7 D7 D5 E8 C6 D7 D5 D6 E8 E6 C7 D6 E6 C5 E7 E7 E7 C5 E7 D8 D7 E8 D7 D7 D8 D7 D7 D7 C8 C8 C8 D8 C8 E7 D7 E8 D7 E8 D8 C8 C7 E5 E6 D8 E3 E3 E2 E2 D1 E3 D3 E5 E5 D4 E4 E4 E4 E5 E5 E5 E4 E5 E5 E5 D3 D3 D3 D3 D3 D3 C4 C3 D3 D4 D4 C3 C2 D3 C3 C3 C3 C3 D5 D5 D3 D4 D4 D4 D3 D4 D4 C4 D5 C5 D5 I574 I575 I576 I577 I578 I579 I582 I583 I584 I585 I587 I588 I681 I682 I683 I686 I687 I688 I689 I691 I693 I701 I702 I704 I705 I707 I709 I710 I711 I713 I714 I715 I716 I717 I718 I719 I720 I721 I722 I727 I728 I729 I730 I731 I732 I733 I734 I735 I736 I739 I909 I910 I911 I913 I914 I915 I916 I918 I919 I920 I921 I922 I924 I925 I926 I927 I928 I930 I934 I935 I936 I937 I938 I939 I940 I941 I942 I943 I944 I945 I946 I948 I951 I952 I953 I954 I955 I956 I957 I958 I959 D5 D5 D5 D5 D5 D4 B4 B4 B4 B4 C4 B4 E1 B1 B1 C1 D1 C1 D1 E1 D1 C7 C8 C8 B8 C8 B7 B7 B8 A7 B7 C7 C8 C7 C7 B7 A7 B8 B7 A7 B7 C7 C7 C7 B7 B7 C7 B7 B7 B7 B3 C3 C3 C3 C2 C3 C2 C3 C2 B3 C2 C2 B3 B3 B2 C2 B1 C2 B2 B1 B2 C2 B2 B2 B2 B2 C3 B2 C3 C2 B3 B3 B3 A3 A3 A3 B3 A3 A3 B4 B4

SERVICE TESTPOINT

3139 123 5676.1

E_14480_095.eps 270504

Block Diagrams, Testpoint Overviews, and Waveforms

L04E AA

6.

22

Block Diagram Video
VIDEO PIP
F2
PIP TUNER IF MULTISTANDARD VIDEO DEMODULATION

1201

F1
19
7202

PIP-PROC.

+5VA 1000 UV1316/A 7 5001 9 VST IF
ERR 4 F002

7242 SDA9488X

H
1214 1212 18
INTF_PrRED_OUT

LTI/CTI

7611 TDA8601T

1002 1003

7201 TDA9887
VIF_1 VIF_2 1 2

7630 7635
3-STATE

7610 TDA9178T

A5
1212 1212 4 6 8
YOUT 19 17 16 Y_2 Pb_2 Pr_2

CONN.
F216

15

INTF_Y_OUT 2 INTF_Y 6

CL