Philips TCM2.0E Schematic

Colour TV Chassis
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TCM2.0E

Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis Overview 2
2. Safety Instructions, Warnings, and Notes 5
3. Directions for Use 6
4. Mechanical Instructions 7
5. Service Modes, Error Codes, and Fault Finding 12
6. Block Diagrams, Test Point Overview, and
Waveforms
Wiring Diagram Of Connector 19", 20", and 22" 19 Wiring Diagram Of Connector 26" 19 Block Diagram MT5335 20
7. Circuit Diagrams and PWB Layouts Diagram PWB Main Power Supply (20") (A)21 22 Main Power Supply (26") (A1)23 25 Standby Power Supply (26") (A2)24 26 SSB v1: Tuner (B01)27 46-47 SSB v1: MCU Standby (B02)28 46-47 SSB v1: DC / DC (B03)29 46-47 SSB v1: Digital Channel Decoder (B04)30 46-47 SSB v1: DVBT/ CI Decoder (B05)31 46-47 SSB v1: Audio Amplifier (B06)32 46-47 SSB v1: MT5335 Video Processor (B07)33 46-47 SSB v1: MT5335 Interface USB/HDMI (B08)34 46-47 SSB v1: Interface LVDS TTL (B09)35 46-47 SSB v1: Flash Memory (B10)36 46-47 SSB v1: SDRAM (B11)37 46-47 SSB v1: MT5335 Interface VGA (B12)38 46-47 SSB v1: D/A Converter (B13)39 46-47 SSB v1: HDMI Switch (B14)40 46-47 SSB v1: I/O Scart (B15)41 46-47 SSB v1: I/O Side AV, S-Video, Audio (B16)42 46-47 SSB v1: MT5335 Interface YPbPr & VGA (B17)43 46-47 SSB v1: I/O VGA (B18)44 46-47 SSB v1: LVDS Receiver (B19)45 46-47
©
Copyright 2009 Koninklijke Philips Electronics N.V. 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.
SSB v2: Tuner (B01)48 67-68 SSB v2: MCU Standby (B02)49 67-68 SSB v2: DC / DC (B03)50 67-68 SSB v2: Digital Channel Decoder (B04)51 67-68 SSB v2: DVBT/ CI Decoder (B05)52 67-68 SSB v2: Audio Amplifier (B06)53 67-68 SSB v2: MT5335 Video Processor (B07)54 67-68 SSB v2: MT5335 Interface USB/HDMI (B08)55 67-68 SSB v2: Interface LVDS TTL (B09)56 67-68 SSB v2: Flash Memory (B10)57 67-68 SSB v2: SDRAM (B11)58 67-68 SSB v2: MT5335 Interface VGA (B12)59 67-68 SSB v2: D/A Converter (B13)60 67-68 SSB v2: HDMI Switch (B14)61 67-68 SSB v2: I/O Scart (B15)62 67-68 SSB v2: I/O Side AV, S-Video, Audio (B16)63 67-68 SSB v2: MT5335 Interface YPbPr & VGA (B17)64 67-68 SSB v2: I/O VGA (B18)65 67-68 SSB v2: LVDS Receiver (B19)66 67-68 Keyboard Control Panel(E) 69 69 Inverter Panel (I)70 71 IR LED Panel (J)72 72
8. Alignments 73
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 74 Abbreviation List 75 IC Data Sheets 78
10. Spare Parts List & CTN Overview 86
11. Revision List 86
Published by JY 0963 BU TV Consumer Care Printed in the Netherlands Subject to modification EN 3122 785 17953
EN 2 TCM2.0E LA1.
Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1.1 Technical Specifications

1.2 Connection Overview
1.3 Chassis Overview
Notes:
Figures can deviate due to the different set executions.
Specifications are indicative (subject to change).
1.1 Technical Specifications

1.1.1 Vision

Display type : LCD Screen size : 19" (48 cm), 16:9
: 20" (51 cm), 4:3 : 22" (56 cm), 16:9 : 26" (66 cm), 16:9
Resolution (H × V pixels) : 640×480 (20")
2
Light output (cd/m
Contrast ratio : 800:1 (20", 26")
Typ. response time (ms) : 12 (20")
Viewing angle (H × V degrees) : 178×178 (20")
Tuning system : PLL Colour systems : PAL, SECAM Video playback : PAL, SECAM, NTSC Tuner bands : UHF, VHF, S, Hyper
) : 300 (19", 20", 22")
: 1 366×768 (26") : 1 440×900 (19") : 1680×1050 (22")
: 500 (26")
: 1000:1 (19", 22")
: 8 (26") : 5 (19", 22")
: 170×160 (19", 22") : 160×160 (26")

1.1.3 Miscellaneous

Power supply
- Mains voltage (V
- Mains frequency (Hz) : 50, 60 Power consumption (W) : ~50 (19")
Stand-by (W) : < 0.3 Dimensions (W × H × D in mm) : 475 × 334 × 71 (19")
Weight (kg) : ? (19")
) : 100 to 240
AC
: ~58 (20") : ~53 (22") : ~120 (26")
: 470 × 406 × 71 (20") : 538 × 375 × 71 (22") : 671 × 458 × 90 (26")
: 5.8 (20") : ? (22") : 7.7 (26")
Supported Computer Formats 60 Hz : 640×480(max.for 20") 60 Hz : 800×600 (all exc.20") 60 Hz : 1 024×768(all exc.20") 60 Hz : 1 280×768 (26" only) 60 Hz : 1 280×1 024 (26" only) 60 Hz : 1 366×768 (26" only) 50 Hz, 75 Hz : 1 440×900 (26", only)
Supported Video Formats 60 Hz : 480i 60 Hz : 480p 50 Hz : 576i 50 Hz : 576p 50 Hz, 60 Hz : 720p 50 Hz, 60 Hz : 1080i 50 Hz, 60 Hz : 1080p (19", 22" only)

1.1.2 Sound

Sound systems : Mono
:Stereo
Maximum power (W) : 2 × 3 (19", 20")
:2 × 5 (22", 26")
Technical Specifications, Connections, and Chassis Overview
TV (75Ω)
EXT 3
HDMI 2 VGA PC EXT 1
VGA
AUDIO SPDIF
LR
YPrPb
COMMON INTERFACE
S-VIDEO
EXT 2
L AUDIO R
CVBS
HDMI 1
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1.2 Connection Overview

EN 3TCM2.0E LA 1.

Figure 1-1 Rear and side I/O 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, and Ye= Yellow.

1.2.1 Side connections

EXT 2: Cinch: Video CVBS - In, Audio - In
Ye - Video CVBS 1 V Wh - Audio L 0.5 V Rd - Audio R 0.5 V
/ 75 ohm jq
PP
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
EXT 2: S-Video (Hosiden): Video Y/C - In
1 -Ground Y Gnd H 2 -Ground C Gnd H 3 -Video Y 1 V 4 -Video C 0.3 V
/ 75 ohm j
PP
P / 75 ohm j
PP
EXT 2: Mini Jack: Audio Head phone - Out
Bk - Head phone 32 - 600 ohm / 10 mW ot
EXT 2: Common Interface
68p - See diagram B05 jk

1.2.2 Rear Connections

USB2.0
1 -D2+ Data channel j 2 -Shield Gnd H 3 -D2- Data channel j 4 -D1+ Data channel j 5 -Shield Gnd H 6 -D1- Data channel j 7 -D0+ Data channel j 8 -Shield Gnd H 9 -D0- Data channel j 10 - CLK+ Data channel j 11 - Shield Gnd H 12 - CLK- Data channel j 13 - n.c. 14 - n.c. 15 - DDC_SCL DDC clock j 16 - DDC_SDA DDC data jk 17 - Ground Gnd H 18 - +5V j 19 - HPD Hot Plug Detect j 20 - Ground Gnd H
VGA PC: Video RGB - In and Service UART
Figure 1-4 VGA Connector
1-+5V k 2 -Data (-) jk 3 -Data (+) jk 4 -Ground Gnd H
HDMI 1 & 2: Digital Video, Digital Audio - In
Figure 1-2 USB (type A)
Figure 1-3 HDMI (type A) connector
1 -Video Red 0.7 V 2 -Video Green 0.7 V 3 -Video Blue 0.7 V 4-n.c. 5 -Ground Gnd H 6 -Ground Red Gnd H 7 -Ground Green Gnd H 8 -Ground Blue Gnd H 9 -+5V_dc +5 V j 10 - Ground Sync Gnd H 11 - n.c. 12 - DDC_SDA DDC data j 13 - H-sync 0 - 5 V j 14 - V-sync 0 - 5 V j 15 - DDC_SCL DDC clock j
/ 75 ohm j
PP
/ 75 ohm j
PP
/ 75 ohm j
PP
EN 4 TCM2.0E LA1.
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I
INVERTER PANEL
(OPTONAL)
B
SMALL SIGNAL BOARD
A(1)
MAIN POWER SUPPLY
E
KEYBOARD
CONTROL PANEL
A2
STANDBY POWER
SUPPLY UNIT
(OPTIONAL)
J
IR LED PANEL
Technical Specifications, Connections, and Chassis Overview
EXT 3: Cinch: Video YPbPr - In, Audio - In
Gn - Video Y 1 V Bu - Video Pb 0.7 V Rd - Video Pr 0.7 V Wh - Audio L 0.5 V Rd - Audio R 0.5 V
EXT 3: Mini Jack: VGA Audio - In
Bk - Audio L/R 0.5 V
EXT 1: Video RGB/YC - In, CVBS - In/Out, Audio - In/Out
Figure 1-5 SCART connector
1 -Audio R 0.5 V 2 -Audio R 0.5 V 3 -Audio L 0.5 V 4 -Ground Audio Gnd H
/ 75 ohm jq
PP
/ 75 ohm jq
PP
/ 75 ohm jq
PP
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
/ 1 kohm k
RMS
/ 10 kohm j
RMS
/ 1 kohm k
RMS

1.3 Chassis Overview

5 -Ground Blue Gnd H 6 -Audio L 0.5 V 7 -Video Blue/C-out 0.7 V 8 -Function Select 0 - 2 V: INT
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3 j 9 - Ground Green Gnd H 10 - Easylink P50 0 - 5 V / 4.7 kohm jk 11 - Video Green 0.7 V 12 - n.c. 13 - Ground Red Gnd H 14 - Ground P50 Gnd H 15 - Video Red/C 0.7 V 16 - Status/FBL 0 - 0.4 V: INT
1 - 3 V: EXT / 75 ohm j 17 - Ground Video Gnd H 18 - Ground FBL Gnd H 19 - Video CVBS 1 V 20 - Video CVBS/Y 1 V 21 - Shield Gnd H
Aerial - In
- - IEC-type (EU) Coax, 75 ohm D
Cinch: S/PDIF - Out
Bk - Coaxial 0.4 - 0.6V
/ 10 kohm j
RMS
/ 75 ohm jk
PP
/ 75 ohm j
PP
/ 75 ohm j
PP
/ 75 ohm k
PP
/ 75 ohm j
PP
/ 75 ohm kq
PP

Figure 1-6 PWB/CBA locations (26" model)

Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

EN 5TCM2.0E LA 2.
Index of this chapter:

2.1 Safety Instructions

2.2 Warnings

2.3 Notes

2.1 Safety Instructions
Safety regulations require the following during a repair:
Connect the set to the Mains/AC Power via an isolation transformer (> 800 VA).
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.
Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points:
Route the wire trees correctly and fix them with the mounted cable clamps.
Check the insulation of the Mains/AC Power lead for external damage.
Check the strain relief of the Mains/AC Power cord for proper function.
Check the electrical DC resistance between the Mains/AC Power plug and the secondary side (only for sets that have a Mains/AC Power isolated power supply):
1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug.
2. Set the Mains/AC Power switch to the “on” position
(keep the Mains/AC Power cord unplugged!).
3. Measure the resistance value between the pins of the
Mains/AC Power 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.
4. Switch “off” the set, and remove the wire between the
two pins of the Mains/AC Power plug.
Check the cabinet for defects, to prevent touching of any inner parts by the customer.
2.2 Warnings
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 same potential.
Be careful during measurements in the high voltage section.
Never replace modules or other components while the unit is switched “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.
2.3 Notes

2.3.1 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 colour 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 stand-by (F). These values are indicated by means of the appropriate symbols.

2.3.2 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 kΩ).
Resistor values with no multiplier may be indicated with either an “E” or an “R” (e.g. 220E or 220R indicates 220 Ω).
All capacitor values are given in micro-farads (μ=× 10 nano-farads (n =× 10
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 Spare Parts List. Therefore, always check this list when there is any doubt.

2.3.3 BGA (Ball Grid Array) ICs

Introduction
For more information on how to handle BGA devices, visit this URL: www.atyourservice.ce.philips.com (needs subscription, not available for all regions). After login, select “Magazine”, then go to “Repair downloads”. Here you will find Information on how to deal with BGA-ICs.
BGA Temperature Profiles
For BGA-ICs, you must use the correct temperature-profile, which is coupled to the 12NC. For an overview of these profiles, visit the website www.atyourservice.ce.philips.com (needs subscription, but is not available for all regions) You will find this and more technical information within the “Magazine”, chapter “Repair downloads”. For additional questions please contact your local repair help desk.

2.3.4 Lead-free Soldering

Due to lead-free technology 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. In general, use of solder paste within workshops should be avoided because paste is not easy to store and to handle.
Use only adequate solder tools applicable for lead-free soldering tin. The solder tool must be able: – To reach a solder-tip temperature of at least 400°C. – To stabilize the adjusted temperature at the solder-tip. – To exchange solder-tips for different applications.
Adjust your solder tool so that a temperature of around 360°C - 380°C is reached and stabilized at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400°C, otherwise wear-out of tips will increase drastically and flux-fluid will be destroyed. To avoid wear-out of tips, switch “off” unused equipment or reduce heat.
Mix of lead-free soldering tin/parts with leaded soldering tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully clear the solder-joint from old tin and re-solder with new tin.
-9
), or pico-farads (p =× 10
-12
-6
),
).
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MODEL :
PROD.NO:
~
S
32PF9968/10
MADE IN BELGIUM
220-240V 50/60Hz
128W
AG 1A0617 000001
VHF+S+H+UHF
BJ3.0E LA

2.3.5 Alternative BOM identification

It should be noted that on the European Service website,
“Alternative BOM” is referred to as “Design variant”.
The third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative B.O.M. (Bill Of Materials) that has been used for producing the specific TV set. In general, it is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different suppliers. This will then result in sets which have the same CTN (Commercial Type Number; e.g. 28PW9515/12) but which have a different B.O.M. number. By looking at the third digit of the serial number, one can identify which B.O.M. is used for the TV set he is working with. If the third digit of the serial number contains the number “1” (example: AG1B033500001), then the TV set has been manufactured according to B.O.M. number 1. If the third digit is a “2” (example: AG2B0335000001), then the set has been produced according to B.O.M. no. 2. This is important for
ordering the correct spare parts!
For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26= 35 different B.O.M.s can be indicated by the third digit of the serial number.
Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 1 and 2 refer to the production centre (e.g. AG is Bruges), digit 3 refers to the B.O.M. code, digit 4 refers to the Service version change code, digits 5 and 6 refer to the production year, and digits 7 and 8 refer to production week (in example below it is 2006 week 17). The 6 last digits contain the serial number.
Directions for Use
Figure 2-1 Serial number (example)

2.3.6 Board Level Repair (BLR) or Component Level Repair (CLR)

If a board is defective, consult your repair procedure to decide if the board has to be exchanged or if it should be repaired on component level. If your repair procedure says the board should be exchanged completely, do not solder on the defective board. Otherwise, it cannot be returned to the O.E.M. supplier for back charging!

2.3.7 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 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.

3. Directions for Use

You can download this information from the following websites:
http://www.philips.com/support http://www.p4c.philips.com

4. Mechanical Instructions

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Mechanical Instructions
EN 7TCM2.0E LA 4.
Index of this chapter:

4.1 Cable Dressing

4.2 Service Positions
4.3 Assy/Panel Removal
4.4 Set Re-assembly
4.1 Cable Dressing
Notes:
Figures below can deviate slightly from the actual situation, due to the different set executions.
Follow the disassemble instructions in described order. They apply mostly to the 26" model unless otherwise specified, but the described method is comparable for the other screen sizes.

Figure 4-1 Cable dressing (20" model)

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Mechanical Instructions

4.2 Service Positions

For easy servicing of this set, there are a few possibilities created:
The buffers from the packaging.
Foam bars (created for Service).

4.2.1 Foam Bars

Figure 4-2 Cable dressing (26" model)

The foam bars (order code 3122 785 90580 for two pieces) can be used for all types and sizes of Flat TVs. See figure “Foam bars” for details. Sets with a display of 42” and larger, require four foam bars [1]. Ensure that the foam bars are always supporting the cabinet and never only the display. Caution: Failure to follow these guidelines can seriously damage the display! By laying the TV face down on the (ESD protective) foam bars, a stable situation is created to perform measurements and alignments. By placing a mirror under the TV, you can monitor the screen.
Figure 4-3 Foam bars

4.3 Assy/Panel Removal

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4.3.1 Stand

1. Refer to next figure.
2. Place the TV set upside down on a table top, using the foam bars (see section “Service Position”).
3. Remove the screws that secure the stand and remove the stand.
Mechanical Instructions
Figure 4-5 Front cover latch location [1/2]
EN 9TCM2.0E LA 4.
Figure 4-4 Stand

4.3.2 Rear Cover

Warning: Disconnect the mains power cord before you remove
the rear cover.
1. Refer to next figures.
2. Place the TV set upside down on a table top, using the foam bars (see section “Service Positions”).
3. Remove the screws that secure the rear cover. The screws are located at the sides. Be careful: Some models (mainly the smaller screen sizes) use latches for securing the rear and front cover together (see figure “Front cover latch location”). These
must be unlocked first before you can open the TV-set!
To open them, use e.g. a (plastic) putty knife. Insert the tool into the gap between the front and rear cover (be extremely careful not to scratch or dent the cabinet when inserting the tool). Gently release the internal latches. Note: You will hear little popping sounds as the latches release and the rear cover moves away from the front cover.
4. Now the rear cover could be lifted but the SSB and power supply panel(s) are mounted in the rear cover and still connected to the LCD panel and other boards. Those
cables should be released first!
5. To release the LVDS cable lift the back cover a few centimetres and move it downwards the set. Now unplug the LVDS connector [2]. Caution: be careful, as this is a very fragile connector!
6. Remove the screw [3].
7. Now the rear cover can be lifted to gain access to the speaker cables and the IR/LED panel cable. Release the connectors [4].
Figure 4-6 Front cover latch location [2/2]
Figure 4-7 LVDS release
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Figure 4-8 Speaker and IR/LED panel cable release

4.3.3 Keyboard Control Board

1. Refer to next figure.
2. Unscrew two screws[1]
3. Unplug connector [2] and remove the board. When defective, replace the whole unit
Mechanical Instructions
Figure 4-10 IR/LED Board and Speakers

4.3.5 Power Supply Board

Due to different set executions this chassis is supplied with one or two power supply boards and figures may differ. Caution: it is absolutely mandatory to remount all different screws and cables at their original position during re-assembly. Failure to do so may result in damaging the power supply.
1. Refer to next figure.
2. Unplug all the connectors [1].
3. Remove the fixation screws [2]
4. Remove the main power supply board.
5. Unplug all the connectors [3].
6. Remove the fixation screws [4]
7. Remove the stand-by power supply board.
Figure 4-9 Keyboard control board

4.3.4 IR/LED Board and Speakers

1. Refer to next figure.
2. Remove the screws [1] and remove the IR/LED board.
3. Remove the screws [2] and remove the speakers. When defective, replace the whole unit.
Figure 4-11 Power Supply Unit(s)

4.3.6 Inverter Board (19", 20", and 22" versions)

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Due to different set executions this chassis some versions are supplied with an inverter board. Figures may differ.
1. Refer to next figure.
2. Unplug all connectors [1].
3. Release the clips [2]
4. Take out the inverter board.
Mechanical Instructions

4.4 Set Re-assembly

To re-assemble the whole set, execute all processes in reverse order.
EN 11TCM2.0E LA 4.
Figure 4-14 SSB
Figure 4-12 Inverter Board

4.3.7 Small Signal Board (SSB)

Caution: it is absolutely mandatory to remount all different
screws at their original position during re-assembly. Failure to do so may result in damaging the SSB.
Removing the SSB
1. See next figures.
2. Remove the screws [1] from the SSB connector plate.
3. Remove the screws [2] from the SSB.
4. On the outside of the set, lift the rear cover near the tuner connector approximately 3 mm in the indicated direction and keep it lifted, while
5. On the inside of the set, slide the metal plate in the indicated direction.
6. Gently lift the board from the rear cover.
7. Now unplug the LVDS connector [3]. Caution: be careful, as this is a very fragile connector! Unplug the rest of the cables [4].
Notes:
While re-assembling, make sure that all cables are placed and connected in their original position. See figure “Cable dressing”.
Pay special attention not to damage the EMC foams at the SB shields. Make sure, that EMC foams are put correctly on their places.
Figure 4-13 SSB connector plate
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Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Error Codes
5.5 Service Tools
5.1 Test Points
This chassis is NOT equipped with test points in the service printing. No test points are mentioned in the service manual.
5.2 Service Modes
The Service Mode feature is split into different parts:
Service Alignment Mode (SAM).
Service Default Mode (SDM).
Customer Service Mode (CSM).
SDM and SAM offer features, which can be used by the Service engineer to repair/align a TV set. Some features are:
Activates the blinking LED procedure for error identification when no picture is available (SDM).
Make alignments (e.g. white tone), (de)select options, enter options codes, reset the error buffer (SAM).
Display information (“SAM” indication in upper right corner of screen, error buffer, software version, options and option codes, sub menus).
The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. In CSM mode, “CSM”, is displayed in the top right corner of the screen. The information provided in CSM and the purpose of CSM is to:
Increase the home repair hit rate.
Decrease the number of nuisance calls.
Solved customers' problem without home visit.

5.2.1 Service Alignment Mode (SAM)

How to Enter
To enter SAM, use the following method:
Press on the remote control the code “062596” directly followed by the “INFO” key.
Figure 5-2 SAM menu, Clear
Figure 5-3 SAM menu, RGB Align
After entering SAM, the following screen is visible, the values can be adjusted according to the requested (see Chapter 8).
Figure 5-1 SAM menu, System Information
Figure 5-4 SAM menu, NVM Editor
Figure 5-5 SAM menu, NVM Update
Service Modes, Error Codes, and Fault Finding
I_17950_020.eps
050808
I_17950_043.eps
080508
I_17950_044.eps
080508
I_17950_045.eps
080508
Figure 5-6 SAM menu, Clear OAD
How to EXIT
Put set in <stand-by> by using the remote control.
EN 13TCM2.0E LA 5.
How to Activate CSM
Key in the code “123654” via the standard RC transmitter.
Contents of CSM

5.2.2 Service Default Mode (SDM)

Purpose
To create a pre-defined setting, to get the same measurements as given in this manual.
To override SW protections.
To start the blinking LED procedure.
How to enter
To enter SAM, use the following method:
Press on the remote control the code “062596” directly followed by the “MENU” key.
After entering SDM, the following screen is visible.
Figure 5-7 SDM menu
From top to bottom, it gives the following information:
Operation hours
Software version
Error buffer display.
Figure 5-8 CSM Menu -1-
Figure 5-9 CSM Menu -2-
Menu Explanation
1. Model Number. Type number and region.
2. Production Serial Number. Product serial no.
3. SW Version. Software cluster and version is displayed (TC = TCL, M2 = MTK2, E = Europe, 0.49 = software version).
4. Codes. Error buffer contents.
5. SSB. SSB serial number.
6. DISPLAY. Display type.
7. NVM Version. NVM version.
8. Key (HDCP) HDMI. Shows valid or invalid HDCP key when HDMI connected. Else blank.
9. Digital Signal Quality. Quality of antenna signal in %.
10. Audio System. Audio system (Mono/Stereo/NICAM)
11. n.a.
12. Video Format. Video format.
13. Stand-by μP SW ID. SW version Stand-by microprocessor.

5.2.3 Customer Service Mode (CSM)

Purpose
When a customer is having problems with his TV-set, he can call his dealer or the Customer Help desk. The service technician can then ask the customer to activate the CSM, in order to identify the status of the set. Now, the service technician can judge the severity of the complaint. In many cases, he can advise the customer how to solve the problem, or he can decide if it is necessary to visit the customer. The CSM is a read only mode; therefore, modifications in this mode are not possible.
How to exit
Press “MENU” on the RC-transmitter.
EN 14 TCM2.0E LA5.
No Picture, no sound, no Black light, Fuse Broken
For Q800,pin5~6
of is 5V & pin7~8
is12V , OK?
Is
U800~U808&U2
01 OK?
Replace the bad
one of
u800~u808&U201
For P804 ,Pin 8~11
is 12V& Pin2~3 of
is 5v
, OK?
Check Pin 10 Of
U810. is it 3.3v?
Check
LQFP jointing of
U203
NO NO
NO
YES YES
YES
Check
X200,C221,C222,C
23,L214 & IIC Bus
YES
Check jointing of
U204,R271~R288,R
248~R260.
YES
Check PSU
I_17950_009.eps
080508
Service Modes, Error Codes, and Fault Finding

5.2.4 Blinking LED Procedure

The software is capable of identifying different kinds of errors. Because it is possible that more than one error can occur over time, an error buffer is available which is capable of storing the last five errors that occurred. This is useful if the OSD is not working properly.
Errors can also be displayed by the blinking LED procedure. The method is to repeatedly let the front LED pulse with as many pulses as the error code number, followed by a period of
1.5 seconds in which the LED is “off”. Then this sequence is repeated. Any RC command terminates the sequence. Error code LED blinking is in white colour.
Example: the contents of the error buffer is “013 007 000 000 000”. After entering SDM, the following occurs:
1 long blink of 5 seconds to start the sequence
1 medium blink of 3 seconds and then 3 short blinks followed by a pause of 1.5 seconds
7 short blinks followed by a pause of 1.5 seconds
1 long blink of 1.5 seconds to finish the sequence.
The sequence starts again with 12 short blinks.

5.4 Fault Finding

5.3 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.
Basically there are six kind of errors:
Code Description Detection method Type
0 no error
3 μP Control I
4 General I
bus Error
7 Tuner I
8 Demodulator I
10 MT8295 I
13 HDMI switch I
2
C-bus Error log +
2
C
I2C-bus Protection +
2
C-bus Error log +
2
C-bus Error log +
2
C-bus Error log +
2
C-bus Error log +
blinking in SDM
spontaneous
blinking in SDM
blinking in SDM
blinking in SDM
blinking in SDM

Figure 5-10 No picture, no sound, no backlight, fuse broken (19", 20", and 22" sets)

Service Modes, Error Codes, and Fault Finding
No Picture, no sound, no Black light, Fuse Broken
pin4~5 is 5V &
pin7~8 is12V of
U505 OK?
Pin 8~11 of P804 is
12V, OK?
Check Pin 4 Of
UM01 is 3.3v
Check
LQFP jointing of
U203
NO NO
NO
YES YES
YES
Pin2~3 of P804 is 5v&Pin 1 is 5v,OK?
Check X200,C221,C222,C 23,L214 & IIC Bus
YES
Check jointing of U204,R271~R288
,R248~R260.
YES
NO
Check sub PSU
for standby
Check Main
PSU
YES
Is
U800~U808&U2
01 OK?
Replace the
bad one of
u800~u808&U2
01
I_17950_010.eps
080508
No Picture, Black light & Sound OK
Check the
output voltage
of Q203. is it
OK?
Check
waveform of
L200~L209 is
OK?
Check the voltage of
C of Q204.
Yes
No
Yes
Is
Pin220,229,238
of U203 shorted
to earth?
Replace Q203
Yes
No
check the
cable to panel
check Pin
221~228&Pin
230~242 of U203
No
I_17950_011.eps
080508
EN 15TCM2.0E LA 5.

Figure 5-11 No Picture, no sound, no backlight, fuse broken (26" sets)

Figure 5-12 No Picture, Backlight & Sound OK

EN 16 TCM2.0E LA5.
Picture OK, No sound
Check the voltage of
Pin 3,13 of u600,is it 12v?
Check Q800
Check the wave of
pin186,185 of
U203,is it OK?
Check
R & L speaker
Check the wave
of Pin of source
input,such as
pin170~177.
Check
Pin 7 of U600 is
6V
No
Check C of Q602 is
5V,B of Q602 is Low
OK?
Yes
No
Check stby
Pin 7 & Mute Pin6 of U600,is it OK?
Yes
Yes
Replace
u203
Yes
NO
Yes
Change the
damage
component
No
No
Yes
Check IF circuit
or Replace
U100
TV source
Check
the input circuit
No
NO
Replace U600
I_17950_012.eps
080508
No colour
Colour system is
Right & another
channel colour is
right ?
Dose the TV
signal too weak?
Check
Pin 17 of U100
OK?
Check
U100
Reset
To
Local system
Check
Tuner Input
cable & antenna
Check E2PROM
U205
Yes
NO
NO
No
YES
YES
Fine Frequency
YES
I_17950_013.eps
080508
Service Modes, Error Codes, and Fault Finding

Figure 5-13 Picture OK, No sound

Figure 5-14 No colour

Service Modes, Error Codes, and Fault Finding
E_06532_036.eps
150208
TO
UART SERVICE
CONNECTOR
TO
UART SERVICE
CONNECTOR
TO I2C SERVICE CONNECTOR
TO TV
PC
HDMI I
2
C only
Optional power
5V DC
ComPair II Developed by Philips Brugge
RC out
RC in
Optional
Switch
Power ModeLink/
Activity
I
2
C
ComPair II
Multi
function
RS232 /UART

5.5 Service Tools

5.5.1 ComPair

Introduction
ComPair (Computer Aided Repair) is a Service tool for Philips Consumer Electronics products. and offers the following:
1. ComPair helps you to quickly get an understanding on how to repair the chassis in a short and effective way.
2. ComPair allows very detailed diagnostics and is therefore capable of accurately indicating problem areas. You do not have to know anything about I yourself, because ComPair takes care of this.
3. ComPair speeds up the repair time since it can automatically communicate with the chassis (when the uP is working) and all repair information is directly available.
4. ComPair features TV software upgrade possibilities.
Specifications
ComPair consists of a Windows based fault finding program and an interface box between PC and the (defective) product. The (new) ComPair II interface box is connected to the PC via an USB cable. For the TV chassis, the ComPair interface box and the TV communicate via a bi-directional cable via the service connector(s).
2
C or UART commands
EN 17TCM2.0E LA 5.
How to Connect
This is described in the ComPair chassis fault finding database.
Figure 5-15 ComPair II interface connection
Caution: It is compulsory to connect the TV to the PC as
shown in the picture above (with the ComPair interface in between), as the ComPair interface acts as a level shifter. If one connects the TV directly to the PC (via UART), ICs will be blown!
How to Order
ComPair II order codes:
ComPair II interface: 312278591020.
For latest software see Philips Service website.
ComPair UART interface cable: 312278591070.
Note: If you encounter any problems, contact your local support desk.
EN 18 TCM2.0E LA5.
User software upgrade flow chart
Power off the set
Plug-in th e USB
stick
Power- on the set
Detect USB
break-in’ and
check autorun fi le
Is USB sw
version > set
sw?
Set re-start &
Proceed with sw
upgrade
Display
upgrade
progress
Prompt user to
remove USB
and restart the
set
Successful?
Prompt user to
try again?
Y
N
N
Y
End
End
Display USB
sw newer than
the TV sw.
Prompt user to
confirm
Proceed?
Display USB
sw equal/older
than TV sw.
Prompt user to
confirm
N
Y
See layout 2
See layout 1
A newer version of software is
detected.
Do you want to upgrade?
YES NO
An equal/older version of software is
detected.
Do you want to proceed?
Note: Should be done on ly if
necessary.
YES NO
See layout 3
Kindly remove the USB stick and
restart the set.
See layout 4
Software update failed!
Would you like to try again?
layout 4
layout 3
layout 2
layout 1
YES NO
Retry?
N
Y
Valid auto-r un
file?
Y
N
Is USB sw
version =< set
sw?
Y
N
I_17920_046.eps
080508
Service Modes, Error Codes, and Fault Finding

5.6 Software Upgrading

5.6.1 Introduction

Software upgrading can be done by ComPair but this feature is a back up solution in case the normal procedure via USB does not work. Please use the USB upgrade method first. When the software is programmed via USB, you need the UPGRADE.PKG file on the USB stick. This file is available for customers on the Consumer Care website. When the software is programmed via ComPair, you need a *.BIN file. This file is only available for service workshops on the Servicer Network Support website.
The software upgrade feature does only work with the ComPairII interface.

5.6.2 Main Software Upgrade

In “normal” conditions, so when there is no major problem with the TV, the main software and the default software upgrade application can be upgraded with the “upgrade.pkg”. This software can be downloaded (as ZIP file) from the Philips Service website (an account is required). If named otherwise, rename the unzipped file always to “upgrade.pkg“.
How to upgrade:
1. Copy the “upgrade.pkg” file to the root of your USB stick.
2. Insert the USB stick in the USB connector on the TV while the TV is in “on” mode. The set will restart, and the upgrading will start automatically (see flowchart below). As soon as the programming is finished, you will get the message that you can remove your USB stick and restart the TV-set.
Figure 5-16 SW upgrade flowchart
Block Diagrams, Test Point Overview, and Waveforms
40-PWL20C-PWI1XG
POWER BOARD
1
NU/SELECT
GND
GND
P800
1 2 3
5 6 7
4
BL ON/OFF
DIMMING
INVERTER_PWR 12V INVERTER_PWR 12V
P805
40-LDMK35-MAE2XG
MAIN BOARD
POWER_ON
1 2 3
5 6
4
5VSB DIIR GND
STANDBY
KEY GND
GND
1 2 3
5 6 7
4
NU 5V-PW 5V-PW
GND GND GND
INVERTER BOARD
CN1
GND
1 2 3
5 6
4
INVERT-SW
DIMMING
GND
INVERTER_PWR 12V
INVERTER_PWR 12V
8 9
5VSB
5V_KEY
GND
1 2 3
5 6
4
GND GND
GND
5V-PW
5V-PW
40-L19PFL-KEC1XG
KEY BOARD
40-L20PFL-IRC1XG
IR BOARD
GND
IR
SB-LCD
ON-LCD
1 2 3
5
4
5V-SB
5VSB-OUT
GND
KEY
1 2 3 4
5VSB-IN
P1
P601
1SP 408P
9 10 11
12V-IN 12V-IN
12V-IN 12V-IN
7 8 9 10
12V-IN 12V-IN
12V-IN 12V-IN
I_17951_001.eps
050808
_
_
19TCM2.0E LA 6.

6. Block Diagrams, Test Point Overview, and Waveforms

Wiring Diagram Of Connector 19", 20", and 22"

Wiring Diagram Of Connector 26"

P800
GND GND GND GND GND +24V +24V +24V +24V +24V
BL ON/OFF NU/SELECT DIMMING GND GND INVERTER INVERTER
1
PWR 12V PWR 12V
P5
40-1PL37C-PWF1XG
MAIN POWER
9 11 13 15 17 19 21 23 25 27
40-LDMK35-MAE2XG
MAIN BOARD
1 2 3 4 5 6 7
P805
1 2 3 4 5 6
8 9
5VSB DIIR GND STANDBY POWER_ON KEY GND 5VSB 5V_KEY
P804
1 2 3 4 5 6 7
9 10 11
NU 5V-PW 5V-PW GND GND GND GND
12V-IN 12V-IN
12V-IN 12V-IN
+24V +24V +24V +24V +24V GND GND GND GND GND VDIM VBLON PDIM GND
ON-LCD
SB-LCD
GND
IR
5V-SB
KEY
GND
5VSB-OUT
5VSB-IN
+12V +12V GND GND +12V +12V GND +12V GND
GND
+5V GND ON/OFF
P1
P601
P4
P5
PANEL INVERTER CONNECTOR
1 2 3 4 5 6 7 8 9 10 11 12 13 14
40-L20PFL-IRC1XG
IR BOARD
1 2 3 4 5
40-L19PFL-KEC1XG
KEY BOARD
1 2 3 4
40-1PL37C-PWF1XG
1
MAIN POWER
2 3 4 5 6 7 8 9
10
40-PWL01B-STE1XG
STB POWER
1 2 3
I_17951_002.eps
050808
CEC
COMMAND
VCC
+5V/
Standby+5v
+12V
VIF
SIF
SAW-D9453D
Broken line is option for TTL
interface panel!
OFF
ON
MT5335
MT5335
HDMI1
HDM2
HDMI SWITCH
SI8195
EDID EDID
VGA
EDID
YPbPr
62 OSCL1 63OSDA1
73 HDMI_5V
79 RX0_CB 80 RX0_C
81 RX0_0B 82 RXO_0
83 RX0_1B 84RXO_1
85 RX0_2B 86 RX0_2
205 DDC_SCL
204 DDC_SDA
104 R
98 B
102 G
96 VSYNC
97 HSYNC
120 Y_IN
121 Pb_IN
123 Pr_IN
173 YPbPr_L
174 YPbPr_R
176 VGA_R
177 VGA_L
SCART
170 SCT_R_IN
171 SCT_L_IN
116 SCT_R
108 SCT_G
114 SCT_B
149 SCT_FS
107 SCT_FB
187 SCT_R_OUT
189 SCT_L_OUT
O/P
AV
129 CVBS
172 R_IN
173 L_IN
126 SY
125 SC
SPDIF
201
SPDIF
_OUT
HEAD PHONE
185
HP_R_OUT
186
HP_L_OUT
PANEL
LVDS
To
TTL
386
LVDS
TTL
TUNER
TDQG4-601A
SAW-K7270M
TD
A98
86T
MT5133
MT8295
IF+/IF-
PARALLEL TS
SERIAL TS
AUDIO
AMP
LV
DS
DDR
32Mb
x16
FLASH
32Mbit
PRE AUDIO
AMP
R
/
L
132 TV_CVBS
CI
CARD
PARALLEL TS
PARALLEL TS
R
L
205 SCL
206 SDA
I2C
8051 WT6702F
15 KEY 9 POWERON
11 STANDBY 14 IR
KEY BOARD
152 KEY
93 IR
EEPROM
M24C16MN
DC-DC
12V to 5V RT8110
POWER
SUPPLY CONNECTOR
V0.1
I_17950_042.eps
080508
Block Diagrams, Test Point Overview, and Waveforms

Block Diagram MT5335

20TCM2.0E LA 6.
Circuit Diagrams and PWB Layouts
I_17930_024.eps
220408
A A
MAIN POWER SUPPLY 19” & 20

7. Circuit Diagrams and PWB Layouts

Main Power Supply (20")

21TCM2.0E LA 7.
Circuit Diagrams and PWB Layouts
I_17930_025.eps
220408
I_17930_026.eps
220408

Layout Main Power Supply (20") (Top Side)

22TCM2.0E LA 7.

Layout Main Power Supply (20") (Bottom Side)

Main Power Supply (26")

I_17930_027.eps
220408
A1 A1
MAIN POWER SUPPLY 26
Circuit Diagrams and PWB Layouts
23TCM2.0E LA 7.
Circuit Diagrams and PWB Layouts
I_17930_028.eps
220408
A2 A2
STANDBY POWER SUPPLY 26”

Standby Power Supply (26")

24TCM2.0E LA 7.
Circuit Diagrams and PWB Layouts
I_17930_029.eps
220408
I_17930_030.eps
220408

Layout Main Power Supply (26") (Top Side)

25TCM2.0E LA 7.

Layout Main Power Supply (26") (Bottom Side)

I_17930_075.eps
250408
Personal Notes:
E_06532_012.eps
131004
Circuit Diagrams and PWB Layouts

Layout Standby Power Supply (26") (Top Side)

26TCM2.0E LA 7.
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