Philips TEH1.0E Schematic

Colour Television Chassis

TEH1.0E

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Contents Page

1. Technical Specifications, Connections, and Chassis Overview 2

2. Safety Instructions, Warnings, and Notes 4

3. Directions for Use 5

4. Mechanical Instructions 6

5. Service Modes, Error Codes, and Fault Finding 10

6. Block Diagrams, Test Point Overviews, and

Waveforms

Block Diagram Power Supply 11 Block Diagram SCALER 12 Block Diagram UOCIII 13 Block Diagram Sync Input Multiplexer 14

7. Circuit Diagrams and PWB Layouts Diagram PWB Main Board Overview 15 20-21 Main Board Part 1 16 20-21 Main Board Part 2 17 20-21 Main Board Part 3 18 20-21 Main Board Part 4 18 20-21 Side I/O Board 22 22 Control Board 23 23 IR & LED Board 24 24

8. Alignments 25

9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 30 Abbreviation List 31 IC Data Sheets 32

10. Exploded View 36 Spare Parts List 37

11. Revision List 42

Copyright 2006 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 JH 0672 BG CD Customer Service Printed in the Netherlands Subject to modification EN 3122 785 16500

EN 2 TEH1.0E 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 : 19.7” (50 cm), 4 : 3 Resolution : 640 x 480p Viewing angle : 170 / 170 Brightness : 450 cd/m Contrast ratio : 600 : 1 Response time : 20 ms Tuning system : PLL TV Colour systems : PAL B/G, D/K, I

: SECAM B/G, D/K, L/L’ Video playback : NTSC M/N 3.58, 4.43 Presets/channels : 100 presets Tuner bands : VHF

: UHF

:CATV

: Hyper-band (S1-S41) Picture preset modes : Movie / Sport / Game /

Weak signal / Personal

Picture formats : Compressed (16 : 9) /

Normal (4 : 3) / Auto / Expand

1.2 Connection Overview

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.

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Figure 1-1 Connection overview

1.2.1 Side Connections

Mini Jack: Audio Head phone - Out

Bk - Head phone 32 - 600 ohm / 10 mW ot

Cinch: Video CVBS - In, Audio - In

Ye - Video CVBS 1 V Wh - Audio L 0.5 V Rd - Audio R 0.5 V

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

1.2.2 Rear Connections

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

/ 75 ohm j

P / 75 ohm j

1.1.2 Sound

Sound systems : A2 + NICAM Stereo Equalizer : 5-band graphic

equalizer

Preset equalizer modes : Personal / Music /

Theatre / Voice Sound effects : Spatial stereo Maximum power (W

):2 x 2

RMS

1.1.3 Miscellaneous

Power adapter:

- Mains voltage (V

) : 90 - 264

- Mains frequency (Hz) : 47 - 63

- Output : 12 Vdc, 6.6 A

Ambient conditions:

- Temperature range (°C) : -25 to +70

- Maximum humidity : 5 - 95 % R.H.

Power consumption (values are indicative):

- Normal operation (W) : 75

- Stand-by (W) : 1.8

Dimensions incl. stand (W x H x D, in mm):

- 26PF1000/62 : 610 x 436 x 150

Aerial - In

- - IEC-type Coax, 75 ohm D

EXT1: AV + RGB

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050404

Figure 1-2 SCART connector EXT1

1 - Audio R 0.5 V 2 - Audio R 0.5 V 3 - Audio L 0.5 V

/ 1 kohm k

RMS

/ 10 kohm j

RMS

/ 1 kohm k

RMS

4 - Ground Gnd (audio) H 5 - Ground Gnd H 6 - Audio L 0.5 V 7 - RGB Blue 0.7 V 8 - Function Select 0 - 2 V: INT

/ 10 kohm j

RMS

/ 75 ohm j

4.5 - 12 V: EXT 4:3 j

9 - Ground Gnd H 10 - Res. Clock signals 11 - RGB Green 0.7 V

/ 75 ohm j

12 - Res. Remote control 13 - Ground Gnd H 14 - Ground Gnd (switch RGB) H 15 - RGB Red 0.7 V 16 - Switch RGB j

/ 75 ohm j

17 - Ground Gnd (video) H 18 - Ground Gnd (video out) H

Technical Specifications, Connections, and Chassis Overview

EN 3TEH1.0E LA 1.

19 - Video out 1 VPP / 75 ohm k 20 - Video in 1 V

/ 75 ohm j

21 - Shield Gnd H

Cinch: Audio - In

Wh - Audio L 0.5 V Rd - Audio R 0.5 V

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

Cinch: Video YPbPr - In

Gn - Video Y 1 V Bu - Video Pb 0.7 V Rd - Video Pr 0.7 V

/ 75 ohm jq

VGA: Video RGB - In

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Figure 1-3 VGA Connector

1.3 Chassis Overview

1 - Video Red 0.7 V 2 - Video Green 0.7 V 3 - Video Blue 0.7 V 4 - Self test.

/ 75 ohm j

5 - DDC return 6 - Ground Red Gnd H 7 - Ground Green Gnd H 8 - Ground Blue Gnd H 9-+5V 10 - Ground Sync Gnd H

Supply of DDC circuit j

11 - GND GND H 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

Mini Jack: PC Audio - In

Wh - Audio L 0.5 V Rd - Audio R 0.5 V

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

DC - In

1 - 12 V_dc / 6.6 A / 75 W jr

CONTROL BOARD

SIDE I/O BOARD

IR & LED BOARD

Figure 1-4 PWB locations

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MAIN BOARD

EN 4 TEH1.0E LA2.

Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

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 Mohm and 12 Mohm.

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.

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.

• 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.

• Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the “double-D symbol”, are trademarks of Dolby Laboratories.

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 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 given in micro-farads (μ= x10 nano-farads (n= x10

• 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 Lead-free Solder

Philips CE is producing lead-free sets (PBF) from 1.1.2005 onwards.

-9

), or pico-farads (p= x10

-12

-6

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. Available ESD protection equipment: – Complete kit ESD3 (small tablemat, wristband,

connection box, extension cable and earth cable) 4822 310 10671.

– Wristband tester 4822 344 13999.

• 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

Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 5 and 6 refer to the production year, digits 7 and 8 refer to production week (in example below it is 2006 week 17).

MODEL :

PROD.NO:

Regardless of the special lead-free logo (which is not always indicated), one must treat all sets from this date onwards according to the rules as described below.

32PF9968/10

AG 1A0617 000001

Figure 2-1 Serial number example

MADE IN BELGIUM

220-240V 50/60Hz

VHF+S+H+UHF

BJ3.0E LA

128W

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130606

Figure 2-2 Lead-free logo

Due to lead-free technology some rules have to be respected by the workshop during a repair:

Directions for Use

EN 5TEH1.0E LA 3.

• 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 stabilise 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 stabilised 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.

• Use only original spare-parts listed in the Service-Manuals. Not listed standard material (commodities) has to be purchased at external companies.

• For sets produced before 1.1.2005, containing leaded soldering tin and components, all needed spare parts will be available till the end of the service period. For the repair of such sets nothing changes.

In case of doubt whether the board is lead-free or not (or with mixed technologies), you can use the following method:

• Always use the highest temperature to solder, when using SAC305 (see also instructions below).

• De-solder thoroughly (clean solder joints to avoid mix of two alloys).

2.3.4 Alternative BOM identification

In September 2003, Philips CE introduced a change in the way the serial number (or production number, see Figure 2-1) is composed. From this date on, the third digit in the serial number (example: AG2B0335000001) indicates the number of

the alternative BOM (Bill of Materials used for producing the specific model of TV set). 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 O.E.M.s. By looking at the third digit of the serial number, the service technician can see if there is more than one type of B.O.M. used in the production of the TV set he is working with. He can then consult the At Your Service Web site, where he can type in the Commercial Type Version Number of the TV set (e.g. 28PW9515/12), after which a screen will appear that gives information about the number of alternative B.O.M.s used. If the third digit of the serial number contains the number 1 (example: AG1B033500001), then there is only one B.O.M. version of the TV set on the market. If the third digit is a 2 (example: AG2B0335000001), then there are two different B.O.M.s. Information about 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.

2.3.5 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!

2.3.6 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

EN 6 TEH1.0E LA4.

Mechanical Instructions

4. Mechanical Instructions

Index of this chapter:

4.1 Cable Dressing

4.3 Rear Cover Removal

4.6 Main Board Removal

4.5 IR & LED / Power Switch Board Removal

4.4 Side I/O Board Removal

4.8 LCD Display Panel Removal

4.7 Speaker Removal

4.9 Set Re-assembly

4.1 Cable Dressing

Notes:

• Figures below can deviate slightly from the actual situation.

• Follow the disassemble instructions in the described order.

• The presence of adhesive tape can interfere severely with the described actions!

• The removal of adhesive aluminium tape can interfere severely with the quality of the image!

4.2 Service Position

For easy servicing of flat TV sets, we have created foam bars, which can be used as indicated in the following drawing.

The foam bars (order code 3122 785 90580 for two pieces) can be used for all types and sizes of Flat TVs. By putting 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 4-1 Cable Dressing

Required for sets

42”

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Figure 4-2 Foam bars

Mechanical Instructions

EN 7TEH1.0E LA 4.

4.3 Rear Cover Removal

1. Put the set face down on a table.

2. Remove cable cover [1].

3. Remove fixation screws [2] and the stand.

4. Remove fixation screws [3] and the rear cover.

Figure 4-3 Rear cover removal 1/2

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4.4 Side I/O Board Removal

1. Remove the rear cover, as described earlier.

2. Unplug connectors [1].

3. Remove screws [2].

4. Remove the side I/O board.

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Figure 4-4 Rear cover removal 2/2

Before you assemble the rear cover:

1. Place all cables in their original position (see figure “Cable dressing”).

Figure 4-5 Side I/O board removal

4.5 IR & LED / Power Switch Board Removal

1. Remove the rear cover, as described earlier.

2. De-solder wire [1].

3. Remove fixation screws [2].

4. Unplug connector [3].

5. Remove the IR & LED/ Power Switch board.

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Figure 4-6 IR & LED / power switch board removal

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EN 8 TEH1.0E LA4.

4.6 Main Board Removal

1. Remove the rear cover, as described earlier.

2. Remove the subframe, as described earlier.

3. Unplug connectors [1].

4. Carefully unplug the fragile LVDS connector [2].

5. De-solder wires [3].

6. Remove fixation screws [4].

7. Remove the main board.

Mechanical Instructions

4.7 Speaker Removal

Figure 4-7 Main board removal

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1. Remove the rear cover, as described earlier.

2. De-solder the wires [1] from the speaker contacts.

3. Remove screws [2].

4. Remove the speaker.

5. At installation of a new speaker, also glue a new piece of foam [3] to the speaker.

Figure 4-8 Speaker removal

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Mechanical Instructions

EN 9TEH1.0E LA 4.

4.8 LCD Display Panel Removal

1. Remove the rear cover, as described earlier.

2. Unplug connectors [1].

3. De-solder wire [2] from the backlight inverter board.

4. Remove fixation screws [3].

5. Move the plastic subframe with the main board to the left, just far enough to have access to connector [4]. Unplug connector [4].

6. Remove fixation screws [5] and bracket [6]

7. Lift the display panel from the front cover, and put it on an appropriate surface (e.g. foam bars).

Figure 4-10 Display panel removal 2/3

3 3 3

Figure 4-9 Display panel removal 1/3

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Figure 4-11 Display panel removal 3/3

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4.9 Set Re-assembly

To re-assemble the whole set, execute all processes in reverse order.

Note:

• While re-assembling, make sure that all cables are placed and connected in their original position. See figure "Cable dressing".

• As the adhesive aluminium tape is crucial for a correct shielding of the set, make sure it is replaced if necessary.

EN 10 TEH1.0E LA5.

Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1 Service Mode

5.2 Error Codes

5.3 Fault Finding and Repair Tips

5.1 Service Mode

The Service Mode is activated by pressing ‘1147’ on the Remote Control, while the set is in the Main User Menu. The software provides menu flexibility and full control to the software. Service persons can adjust the TV in all manners. In the Service Menu, you find a list of parameters.

All functions of the Service Mode, and the default parameter settings, are listed in Chapter “Alignments”.

FAULT TRACING DIAGRAM FOR POWER SUPPLY

Check 12 V DC Adapter Out

YES

Check 12 V on s401

5.2 Error Codes

This set does not generate Error Codes

5.3 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.

Check AC Power Cable If AC is OK Change Adapter

Check Cable

YES

Check +5V

YES

Check 3.3 V STB

YES

Check 3.3 V S_SW & 1V8_SW

YES

POWER IS OK

Check IC U403 and Peripheral Components

Check U500 and and Peripheral Components

Check StandBy Pin, Q400A and and Peripheral Components

LOW HIGH

StandBy Mode

Normal Mode Check Components For 5V

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Figure 5-1 Fault finding power supply

Block Diagrams, Test Point Overviews, and Waveforms

EN 11TEH1.0E LA 6.

6. Block Diagrams, Test Point Overviews, and Waveforms

Block Diagram Power Supply

Power supply

+12V

SMPS

+5V

+5V_SW

On/Off

Linear

regulator

+3V3

Linear

regulator

+3V3

Personal Notes:

+5V

+5V_SW

+3Vstb

+3V3s_SW

+5V_SW

+12V_SW

SMPS

+1V8

Linear

regulator

+8V

On/Off

+1V8s_SW

+8V

+12V_SW

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Block Diagrams, Test Point Overviews, and Waveforms

Block Diagram SCALER

Scaler Block Diagram

EN 12TEH1.0E LA 6.

PC input

UOC P1_2/INT2 (PC auto detect)

From

H,V sync

Sync

detect

I2C

R,G,B

H,V sync

NVM

(DDC)

VGA_TV_SW

Sync input mux

(see separate page)

3x15pin emulator

connectors

VGA I2C

R,G,B

H, V sync

Keyboard

Backlight on/off

interface

KBD[1..0]

6745 “Lithium-C”

brightness

control

GPIO(3), GPIO(4)

LVDS outputs

XTL

Xtal input from UOC

Xtal not mounted on

PCB

Panel interface

connector

UOCIII

HD video

input

External

H-sync

input

connector

R,G,B

HD_Y

YUV_TV_SW

Ext_Hsync

Ext_Hsync_Sel

+3V3s_SW +1V8s_SW

Scaler power

supply voltages

A[17..0]

Flash Rom

D[7..0]

I2C

From UOCIII

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Block Diagrams, Test Point Overviews, and Waveforms

Block Diagram UOCIII

EN 13TEH1.0E LA 6.

UOCIII

Scart

From Sync Detection

(auto PC mode detect)

HD audio in

Xtal output to scaler

Audin5, AudOut5, R,G,B, STATAV1, FBLin

P1_2/INT2

Aud2in

Keyboard interface

XTALin, XTALout

connector

I2SWS, I2SCLK, I2SDO2,

UOCIII

I2S output

connectors

I2SDO1,I2SDI1/O

P1_6, P1_7

YUVin, YUVout

DECDIG

I2C interface

connector

NVM

I2C to scaler

TDA9178

picture booster

(optional)

+5V_SW

+3Vstb

1V8 supply

PC audio in

AV front PCB

CVBS

Y/C

Headphones

Aud3in

Aud4in

y3,c3

Headphone

amplifiers

AudoutHP

Line out

AudoutLS

P2_4

Mute

Speaker

amplifiers

TDA1517

P3_1

Astb

Refo/Refin

FM-

radio

filter

Rout, Gout, Bout

Hout, VDRB Hsync, Vsync

SAW

filter

Tuner UV1316 mk4 UR1316 mk3

P2_0

P1_3 P2_1 P2_2

VIFinSIFin

SAW

filter

Reset

On/Off (to power supply) YUV_TV_SW VGA_TV_SW

R,G,B

Ext_Hsync_selP1_1

Reset circuit not mounted on the PCB, P2_0 reserved

Speaker

connectors

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