Philips Q522.2E Schematic

Colour Television Chassis

MG8

ME8

Q522.2E

MG8

ME8

Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis Overview 2

2. Safety Instructions, Warnings, and Notes 6

3. Directions for Use 7

4. Mechanical Instructions 8

5. Service Modes, Error Codes, and Fault Finding 17

6. Block Diagrams, Test Point Overview, and

Waveforms

Wiring Diagram 32” (ME8) 37 Wiring Diagram 37” (MG8) 38 Wiring Diagram 42” (ME8) 39 Wiring Diagram 47” (ME8) 40 Block Diagram Video 41 Block Diagram Audio 42 Block Diagram Control & Clock Signals 43 SSB: Test Points (Overview Top Side) 44 SSB: Test Points (Overview Bottom Side) 47 I2C IC Overview 50 Supply Lines Overview 51

7. Circuit Diagrams and PWB Layouts Drawing PWB Main Supply Panel (42") 52 n.a. Main Supply Panel (47") (Part 1) 53 n.a. Main Supply Panel (47") (Part 2) 54 n.a. Small Signal Board (B02-B10) 55-85 89-94 SSB: SRP List Explanation 86 SSB: SRP List Part 1 87 SSB: SRP List Part 2 88 Keyboard Control Panel (E) 95 95 IR & LED Panel (J) 96 97

8. Alignments 99

9. IC Data Sheets 109

10. Spare Parts List & CTN Overview 120

11. Revision List 120

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Copyright 2008 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.

Published by TY 0871 BU TV Consumer Care Printed in the Netherlands Subject to modification EN 3122 785 18012

EN 2 Q522.2E LA1.

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1.1 Technical Specifications

1.2 Connections

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 : 32" (82 cm), 16:9

: 37" (94 cm), 16:9 : 42" (107 cm), 16:9 : 47" (120 cm), 16:9

Resolution (H × V pixels) : 1366×768 (32 & 37”)

Light output (cd/m Contrast ratio : 24000:1 (37”)

Viewing angle (H × V degrees) : 176 × 176 Max. response time (ms) : ≈ 5 Tuning system : PLL Colour systems : PAL B/G, D/K, I

Video playback : NTSC

Tuner bands : UHF, VHF, S, Hyper Supported video formats :

- @ 60 Hz : 480i

- @ 60 Hz : 480p

- @ 50 Hz : 576i

- @ 50 Hz : 576p

- @ 50, 60 Hz : 720p

- @ 50, 60 Hz : 1080i

- @ 24, 25, 30, 50, 60 Hz : 1080p Supported computer formats :

- @ 60, 70, 75, 85 Hz : 1 024 × 768

- @ 60, 72, 75, 85 Hz : 800 × 600

- @ 60, 70, 75, 85 Hz : 640 × 480

) : 500

: 1920×1080 (42 & 47”)

: 30000:1 (32, 42 & 47”)

: SECAM B/G, D/K, L/L’ : DVB COFDM 2K/8K

: PAL : SECAM

1.1.4 Miscellaneous

Power supply:

- Mains voltage (V

- Mains frequency (Hz) : 50 / 60

Ambient conditions:

- Temperature range (°C) : +5 to +35

Power consumption (values are indicative)

- Normal operation (W) : 130 (32”)

- Stand-by (W) : < 0.15

Dimensions (W × H × D in mm) : 819 × 518 × 92 (32")

Weight (kg) : 13 (32")

) : 220 - 240 ± 10%

: 170 (37”) : 200 (42”) : 260 (47”)

: 930 × 611 × 99 (37") : 1046 × 644 × 88 (42") : 1163 × 712 × 104 (47")

: 17.5 (37") : 21 (42") : 27.5 (47")

1.1.2 Sound

Maximum power (W

1.1.3 Multimedia

Supported file formats : JPEG

USB input : USB2.0

):2× 15

RMS

:MP3 : Slideshow (.alb)

Technical Specifications, Connections, and Chassis Overview

1.2 Connections

EN 3Q522.2E LA 1.

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.

1.2.1 Rear Connections

1 & 2 - EXT1 & 2: Video RGB - In, CVBS - In/Out, Audio - In/ Out

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Figure 1-2 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

/ 1 kohm k

RMS

/ 10 kohm j

RMS

/ 1 kohm k

RMS

5 -Ground Blue Gnd H 6 -Audio L 0.5 V 7 -Video Blue 0.7 V

/ 10 kohm j

RMS

/ 75 ohm jk

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 - n.c. 11 - Video Green 0.7 V

/ 75 ohm j

12 - n.c.

Figure 1-1 Connection overview

13 - Ground Red Gnd H 14 - Ground P50 Gnd H 15 - Video Red 0.7 V 16 - Status/FBL 0 - 0.4 V: INT

17 - Ground Video Gnd H 18 - Ground FBL Gnd H 19 - Video CVBS/Y 1 V 20 - Video CVBS 1 V 21 - Shield Gnd H

3 - EXT3: Cinch: Video YPbPr - In, Audio - In

Gn - Video Y 1 V Bu - Video Pb 0.7 V Rd - Video Pr 0.7 V Rd - Audio - R 0.5 V Wh - Audio - L 0.5 V

4 - Cinch: S/PDIF - Out

Bk - Coaxial 0.4 - 0.6V

Service Connector (UART)

1 -Ground Gnd H 2 -UART_TX Transmit k 3 -UART_RX Receive j

5 - Cinch: Audio - Out

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

6 - Aerial - In

- - IEC-type (EU) Coax, 75 ohm D

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/ 75 ohm j

1 - 3 V: EXT / 75 ohm j

/ 75 ohm k

/ 75 ohm j

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

/ 75 ohm kq

/ 10 kohm kq

RMS

/ 10 kohm kq

RMS

EN 4 Q522.2E LA1.

Technical Specifications, Connections, and Chassis Overview

7 - HDMI 1, 2 & 3 Digital Video, Digital Audio - In

18 2

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Figure 1-3 HDMI (type A) connector

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

8 - Mini Jack: HDMI/DVI Audio - In

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

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

1.2.2 Side Connections

10 - Cinch: Audio - In

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

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

11 - Cinch: Video CVBS - In

Ye - Video CVBS 1 V

/ 75 ohm jq

12 - 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

13 - USB2.0

1 2 3 4

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Figure 1-4 USB (type A)

1-+5V k 2 - Data (-) jk 3 - Data (+) jk 4 - Ground Gnd H

14 - HDMI: Digital Video, Digital Audio - In (see connector 7)

15 - Common Interface

68p - See diagram B09A jk

9. Head phone (Output)

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

1.3 Chassis Overview

MAIN

SUPPLY PANEL

KEYBOARD CONTROL

PA NE L

IR & LED PANEL

Figure 1-5 PWB locations 32”

SMALL SIGNAL

BOARD

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MAIN

SUPPLY PANEL

Technical Specifications, Connections, and Chassis Overview

EN 5Q522.2E LA 1.

KEYBOARD CONTROL

PANEL

IR & LED PANEL

MAIN

SUPPLY PANEL

KEYBOARD CONTROL

PA NE L

Figure 1-6 PWB locations 37”

SMALL SIGNAL

BOARD

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SMALL SIGNAL

BOARD

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IR & LED PANEL

MAIN

SUPPLY PANEL

KEYBOARD CONTROL

PANEL

IR & LED PANEL

Figure 1-7 PWB locations 42”

Figure 1-8 PWB locations 47”

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SMALL SIGNAL

BOARD

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EN 6 Q522.2E 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 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

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

MODEL :

PROD.NO:

32PF9968/10

AG 1A0617 000001

220-240V 50/60Hz

VHF+S+H+UHF

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.

EN 7Q522.2E LA 3.

MADE IN BELGIUM

128W

BJ3.0E LA

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3. Directions for Use

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

EN 8 Q522.2E LA4.

Mechanical Instructions

4. Mechanical Instructions

Index of this chapter:

4.1 Cable Dressing

4.2 Service Positions

4.3 Assy/Panel Removal ME8 Styling

4.4 Assy/Panel Removal MG8 Styling

4.5 Set Re-assembly

4.1 Cable Dressing

Notes:

• Figures below can deviate slightly from the actual situation, due to the different set executions.

Tape the LVDS cable to LCD Panel.

Tape the Control knob cable to LCD Panel

Do not dress the control knob cable too tight at IIR panel .

Tape the mains inlet cable to LCD Panel away from the PSU edge

7x Tape

Tapes the terminal and IR cable to LCD Panel

3x Saddle (M)

Saddle for mains inlet, Speaker, Tweeter terminal and IR cable dressing.

Saddle for mains inlet cable dressing. saddle position – away from PSU area.

1x Saddle (S)

Figure 4-1 Cable dressing 32”

Saddle for speaker ferrite ring

Saddle for 8P, 11P and Speaker cable dressing.

Tapes the terminal cables to LCD Panel

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Figure 4-2 Mains inlet & left speaker cables 32”

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Figure 4-3 LVDS & PSU_SSB cables 32”

Mechanical Instructions

EN 9Q522.2E LA 4.

Figure 4-4 Cable dressing 37”

Saddles for High Voltage cable dressing

Saddle for 11P, 8P, speaker and IR cable dressing

Saddle for LVDS cable dressing

Saddle for speaker ferrite

Saddle for 11P cable ferrite ring

Saddle for 8P cable ferrite ring

Saddle for speaker cable dressing

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12x Tape

7x Saddle (M)

Figure 4-5 Cable dressing 42”

Saddles for speaker and IR cable dressing

5x Saddle (S)

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EN 10 Q522.2E LA4.

Figure 4-6 Right speaker cables 42”

Mechanical Instructions

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Figure 4-7 Right speaker cables (with bar mounted) 42”

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Figure 4-8 Felt and tape position for LVDS cable 42”

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Saddle for High Voltage cable dressing

Mechanical Instructions

Saddles for High Voltage cable dressing

EN 11Q522.2E LA 4.

2x Metal bar clamp for dressing High Volta

e cable.

1x Metal bar clamp for dressing Control knob

12x Tape

Saddle for 8P/11P cable dressing

Saddles for IR, Speaker and Mains inlet cables dressing

9x Saddle (M)

Figure 4-9 Cable dressing 47”

Saddles for IR and Speaker cables dressing

8x Saddle (S)

Saddle for LVDS dressing

Saddle for speaker ferrite

Saddle for 11P cable ferrite ring and Left Speaker cable dressing

3x Not used

cable

ring

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Figure 4-10 Dressing details for HV cable 47”

EN 12 Q522.2E LA4.

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

Required for sets

42"

4.3.3 IR & LED Board

Refer to next figure for details.

1. Unplug connectors [1].

2. Use a flat screw driver to release the clip by pushing in the indicated direction [2].

3. Lift the board and take it out.

When defective, replace the whole unit.

Figure 4-12 IR & LED Board

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Figure 4-11 Foam bars

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.

4.3 Assy/Panel Removal ME8 Styling

4.3.1 Rear Cover

Warning: Disconnect the mains power cord before you remove

the rear cover. Note: it is not necessary to remove the stand while removing the rear cover.

1. Remove all screws of the rear cover.

2. Lift the rear cover from the TV. Make sure that wires and flat coils are not damaged while lifting the rear cover from the set.

4.3.4 Key Board

1. Unplug the key board connector from the IR & LED board.

2. Remove the screws [1].

3. Lift the unit and take it out of the set. When defective, replace the whole unit.

4.3.5 Main Supply Panel

1. Unplug all connectors.

2. Remove the fixation screws.

3. Take the board out. When defective, replace the whole unit.

4.3.6 Small Signal Board (SSB)

Caution: It is mandatory to remount screws at their original

position during re-assembly. Failure to do so may result in damaging the SSB.

1. Unplug the LVDS connector. Caution: be careful, as this is a very fragile connector!

2. Unplug all other connectors.

3. Remove all screws that hold the board.

4. The SSB can now be taken out of the set, together with the front shield and the side cover.

5. To remove the shield, remove the screws and lift it of.

6. To remove the side cover, remove the screws and pull the cover sidewards from the SSB.

4.3.2 Speakers

Remove the screws [1] and lift the whole unit from the rear cover. Take the speakers out together with their casing. When defective, replace the whole unit.

Mechanical Instructions

EN 13Q522.2E LA 4.

4.3.7 LCD Panel

Refer to next figure for details. As every screen size has a (slightly) different mechanical construction (some have the boards directly mounted on the LCD display, others use brackets), we only describe one model. Disassembly method of other LCD panels is similar to the one described below.

1. Unplug the LVDS connector [1]. Caution: be careful, as this is a very fragile connector!

2. Unplug the connectors [2].

3. Release the wiring tape [3].

4. Release the speaker connectors [4].

5. Remove the fixation screws from the SSB support bracket and take the SSB out together with the bracket.

6. Do the same for the PSU.

7. Remove the fixation screws and the clamps [7].

8. Remove the fixation screws [8], that hold the subframe and the fixation screws [9], that hold the LCD panel.

9. Lift out the sub frame.

10. The LCD panel can now be lifted from the front cabinet.

8 8

(

4x)

Figure 4-13 LCD Panel removal (photo from Q522.1E chassis)

4.4 Assy/Panel Removal MG8 Styling

4.4.1 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.

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Figure 4-14 Stand

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EN 14 Q522.2E LA4.

4.4.2 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 [1] that secure the rear cover. The screws are located at the sides. Be careful: 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.

4. 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!

5. Remove the screw [3].

6. Now the rear cover can be lifted to gain access to the speaker cables and the IR/LED panel cable. Release the connectors [4].

Mechanical Instructions

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Figure 4-17 Speaker and IR/LED panel cable release

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1 1

Figure 4-15 Rear cover

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Figure 4-16 LVDS release

Mechanical Instructions

EN 15Q522.2E LA 4.

4.4.3 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

Figure 4-18 Keyboard control board

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4.4.5 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.

4.4.4 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.

22 22

1 1

Figure 4-19 IR/LED Board and Speakers

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4 4

Figure 4-20 Power Supply Unit(s)

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EN 16 Q522.2E LA4.

4.4.6 Inverter Board

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

Figure 4-21 Inverter Board

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Figure 4-23 SSB

4.5 Set Re-assembly

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

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 in the set. Ensure that EMC foams are mounted correctly.

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4.4.7 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. Gently lift the board from the rear cover.

5. Now unplug the LVDS connector [3]. Caution: be careful, as this is a very fragile connector! Unplug the rest of the cables [4].

1 1

Figure 4-22 SSB connector plate

I_17930_047.eps

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5. Service Modes, Error Codes, and Fault Finding

EN 17Q522.2E LA 5.

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Stepwise Start-up

5.4 Service Tools

5.5 Error Codes

5.6 The Blinking LED Procedure

5.7 Protections

5.8 Fault Finding and Repair Tips

5.9 Software Upgrading

5.1 Test Points

As most signals are digital, it will be difficult to measure waveforms with a standard oscilloscope. However, several key ICs are capable of generating test patterns, which can be controlled via ComPair. In this way it is possible to determine which part is defective.

Perform measurements under the following conditions:

• Service Default Mode.

• Video: Colour bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 Service Modes

Service Default mode (SDM) and 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 read-out for all chassis. (see also paragraph “ComPair”).

– Picture mute (blue mute or black mute). – Automatic volume levelling (AVL). – Skip/blank of non-favourite pre-sets.

How to Activate SDM

For this chassis there are two kinds of SDM: an analogue SDM and a digital SDM. Tuning will happen according table “SDM Default Settings”.

• Analogue SDM: use the standard RC-transmitter and key in the code “062596”, directly followed by the “MENU” button. Note: It is possible that, together with the SDM, the main menu will appear. To ;switch it “off”, push the “MENU” button again.

• Digital SDM: use the standard RC-transmitter and key in the code “062593”, directly followed by the “MENU” button. Note: It is possible that, together with the SDM, the main menu will appear. To switch it “off”, push the “MENU” button again.

• Analogue SDM can also be activated by shorting for a moment the two solder pads [1] (see figure “Service mode pads”) on the SSB, with the indication “SDM”. Activation can be performed in all modes, except when the set has a problem with the Stand-by Processor.

SDM

SDMSPI

5.2.1 Service Default Mode (SDM)

Purpose

• To create a pre-defined setting, to get the same measurement results as given in this manual.

• To override SW protections detected by stand-by processor and make the TV start up to the step just before protection (a sort of automatic stepwise start up). See paragraph “Stepwise Start Up”.

• To override SW protections detected by MIPS. See also paragraph “Error codes”.

• To start the blinking LED procedure (not valid for protections detected by stand-by software).

Specifications

Table 5-1 SDM default settings

Region Freq. (MHz)

Europe, AP(PAL/Multi) 475.25 PAL B/G

Europe, AP DVB-T 546.00 PID

Video: 0B 06 PID PCR: 0B 06 PID Audio: 0B 07

• All picture settings at 50% (brightness, colour, contrast).

• All sound settings at 50%, except volume at 25%.

• All service-unfriendly modes (if present) are disabled, like: – (Sleep) timer. – Child/parental lock.

Default system

DVB-T

I_18010_068.eps

Figure 5-1 Service mode pads

After activating this mode, “SDM” will appear in the upper right corner of the screen (if you have picture).

How to Navigate

When you press the “MENU” button on the RC transmitter, the set will toggle between the SDM and the normal user menu (with the SDM mode still active in the background).

How to Exit SDM

Use one of the following methods:

• Switch the set to STAND-BY via the RC-transmitter.

• Via a standard customer RC-transmitter: key in “00”sequence.

5.2.2 Service Alignment Mode (SAM)

Purpose

• To perform (software) alignments.

• To change option settings.

• To easily identify the used software version.

• To view operation hours.

• To display (or clear) the error code buffer.

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How to Activate SAM

Via a standard RC transmitter: key in the code “062596” directly followed by the “INFO” button. After activating SAM with this method a service warning will appear on the screen, you can continue by pressing the red button on the RC.

Contents of SAM:

• Hardware Info. – A. SW Version. Displays the software version of the

main software (example: Q522E-1.2.3.4 = AAAAB_X.Y.W.Z).

• AAAA= the chassis name.

• B= the region: A= AP, E= EU, L= LatAm, U = US. For AP sets it is possible that the Europe software version is used.

• X.Y.W.Z= the software version, where X is the main version number (different numbers are not compatible with one another) and Y.W.Z is the sub version number (a higher number is always compatible with a lower number).

– B. SBY PROC Version. Displays the software version

of the stand-by processor.

– C. Production Code. Displays the production code of

the TV, this is the serial number as printed on the back of the TV set. Note that if an NVM is replaced or is initialized after corruption, this production code has to be re-written to NVM. ComPair will foresee in a possibility to do this.

• Operation Hours. Displays the accumulated total of operation hours (not the stand-by hours). Every time the TV is switched “on/off”, 0.5 hours is added to this number.

• Errors (followed by maximal 10 errors). The most recent error is displayed at the upper left (for an error explanation see paragraph “Error Codes”).

• Reset Error Buffer. When you press “cursor right” (or the “OK button) and then the “OK” button, the error buffer is reset.

• Alignments. This will activate the “ALIGNMENTS” submenu.

• Dealer Options. Extra features for the dealers.

• Options. Extra features for Service. For more info regarding option codes, see chapter 8 “Alignments”. Note that if you change the option code numbers, you have to confirm your changes with the “OK” button before you store the options. Otherwise you will loose your changes.

• Initialise NVM. The moment the processor recognizes a corrupted NVM, the “initialize NVM” line will be highlighted. Now, you can do two things (dependent of the service instructions at that moment): – Save the content of the NVM via ComPair for

development analysis, before initializing. This will give the Service department an extra possibility for diagnosis (e.g. when Development asks for this).

– Initialize the NVM.

Note: When you have a corrupted NVM, or you have replaced the NVM, there is a high possibility that you will not have picture anymore because your display code is not correct. So, before you can initialize your NVM via the SAM, you need to have a picture and therefore you need the correct display option. Refer to chapter 8 for details. To adapt this option, you can use ComPair (the correct HEX values for the options can be found in chapter 8 “Alignments”) or a method via a standard RC (described below). Changing the display option via a standard RC: Key in the code “062598” directly followed by the “MENU” button and “XXX”, where XXX is the 3 digit decimal display code (see table “Option code overview” in chapter 8 “Alignments”, or sticker on the side/bottom of the cabinet). Make sure to key in all three digits, also the leading zero’s. If the above action is successful, the front LED will go out as an indication that the RC sequence was correct. After the display option is changed in the NVM, the TV will go to the Stand-by mode. If the NVM was corrupted or

empty before this action, it will be initialized first (loaded with default values). This initializing can take up to 20 seconds.

Display Option

Code

39mm

040

PHILIPS

MODEL:

32PF9968/10

27mm

PROD.SERIAL NO:

AG 1A0620 000001

(CTN Sticker)

E_06532_038.eps

240108

Figure 5-2 Location of Display Option Code sticker

• Store. All options and alignments are stored when pressing “cursor right” (or the “OK” button) and then the “OK”-button.

• SW Maintenance. – SW Events. Not useful for Service purposes. In case

of specific software problems, the development department can ask for this info.

– HW Events. Not useful for Service purposes. In case

of specific software problems, the development department can ask for this info.

• Test settings. For development purposes only.

• Upload to USB. To upload several settings from the TV to a USB stick, which is connected to the Side I/O. The items are “Channel list”, “Personal settings”, “Option codes”, “Display-related alignments” and “History list”. First you have to create a directory “repair” in the root of the USB stick.To upload the settings you have to select each item separately, press “cursor right” (or the “OK button), confirm with “OK” and wait until “Done” appears. In case the download to the USB stick was not successful “Failure” will appear. In this case, check if the USB stick is connected properly and if the directory “repair” is present in the root of the USB stick. Now the settings are stored onto your USB stick and can be used to download onto another TV or other SSB. Uploading is of course only possible if the software is running and if you have a picture. This method is created to be able to save the customer’s TV settings and to store them into another SSB.

• Download from USB. To download several settings from the USB stick to the TV. Same way of working as with uploading. To make sure that the download of the channel list from USB to the TV is executed properly, it is necessary to restart the TV and tune to a valid preset if necessary. Note: The “History list item” can not be downloaded from USB to the TV. This is a “read-only” item. In case of specific problems, the development department can ask for this info.

How to Navigate

• In SAM, you can select the menu items with the “CURSOR UP/DOWN” key on the RC-transmitter. The selected item will be highlighted. When not all menu items fit on the screen, move the “CURSOR UP/DOWN” key to display the next/previous menu items.

• With the “CURSOR LEFT/RIGHT” keys, it is possible to: – (De) activate the selected menu item. – (De) activate the selected sub menu.

• With the “OK” key, it is possible to activate the selected action.

How to Exit SAM

Use one of the following methods:

• Press the “MENU” button on the RC-transmitter.

• Switch the set to STAND-BY via the RC-transmitter.

Service Modes, Error Codes, and Fault Finding

EN 19Q522.2E LA 5.

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. When in this chassis CSM is activated, a colour bar test pattern will be visible for 5 seconds. This test pattern is generated by the Pacific3. So if you see this test pattern you can determine that the back end video chain (Pacific3, LVDS, and display) of the SSB is working. In case of a set with DFI panel, an extra test picture is generated. So you will see the Pacific3 test picture for 3 seconds and then the DFI EPLD test picture for another 3 seconds. With this extra test picture you can determine if the DFI board is working properly. Also new in this chassis: when you activate CSM and there is a USB stick connected to the TV, the software will dump the complete CSM content to the USB stick. The file (Csm.txt) will be saved in the root of your USB stick. This info can be handy if you do not have picture. Another new item in this chassis is when CSM is activated, the complete error-buffer content will be shown via the blinking LED procedure.

How to Activate CSM

Key in the code “123654” via the standard RC transmitter.

Note: Activation of the CSM is only possible if there is no (user) menu on the screen!

How to Navigate

By means of the “CURSOR-DOWN/UP” knob on the RCtransmitter, you can navigate through the menus.

Contents of CSM

• Set Type. This information is very helpful for a help desk/ workshop as reference for further diagnosis. In this way, it is not necessary for the customer to look at the rear of the TV-set. Note that if an NVM is replaced or is initialized after corruption, this set type has to be re-written to NVM. ComPair will foresee in a possibility to do this.

• Production Code. Displays the production code (the serial number) of the TV. Note that if an NVM is replaced or is initialized after corruption, this production code has to be re-written to NVM. ComPair will foresee a in possibility to do this.

• Code 1. Gives the last five errors of the error buffer. As soon as the built-in diagnose software has detected an error, the buffer is adapted. The last occurred error is displayed on the leftmost position. Each error code is displayed as a 2-digit number. When less than 10 errors occur, the rest of the buffer is empty (00). See also paragraph “Error Codes” for a description.

• Code 2. Gives the first five errors of the error buffer. See also paragraph “Error Codes” for a description.

• Options 1. Gives the option codes of option group 1 as set in SAM (Service Alignment Mode).

• Options 2. Gives the option codes of option group 2 as set in SAM (Service Alignment Mode).

• 12NC SSB. Gives an identification of the SSB as stored in NVM. Note that if an NVM is replaced or is initialized after corruption, this identification number has to be re-written to NVM. ComPair will foresee in a possibility to do this. This identification number consists of 14 characters and is built up as follows:

- Seven last characters of the 12NC of the SSB itself.

- the serial number of the SSB, which consists of seven digits. Both can be found on a sticker on the PWB of the

SSB itself. The format of the identification number is then as follows: <last seven characters of 12NC of SSB><serial number of SSB> (total fourteen characters).

• Installed date. Indicates the date of the first installation of the TV. This date is acquired via time extraction.

• Digital Natural Motion. Gives the status of the Digital Natural Motion setting as set by the customer. Remark: a customer can choose between “OFF”, “MINIMUM” and “MAXIMUM”, but in CSM this item will only show “OFF” or “ON” (“ON” in case the customer has chosen “MINIMUM” or “MAXIMUM”)

• Pixel Plus. Gives the last status of the Perfect Pixel HD setting, as set by the customer. Possible values are “ON” and “OFF”. See DFU on how to change this item.

• DNR. Gives the last status of the Noise reduction setting, as set by the customer. Possible values are “OFF”, “MINIMUM”, “MEDIUM” and “MAXIMUM”. See DFU on how to change this item.

• Noise Figure. Gives an indication of the signal quality for the selected transmitter. Possible values are “BAD”, “AVERAGE”, “GOOD“ and “DIGITAL”. In case of a digital channel, this item will never indicate: “BAD”, “GOOD” or “AVERAGE” but only displays “DIGITAL”.

• 12NC Display. Shows the 12NC of the display.

• Head phone Volume. Gives the last status of the head phone volume, as set by the customer. The value can vary from 0 (volume is minimum) to 100 (volume is maximum). See DFU on how to change this item.

• Surround Mode. Indicates the by the customer selected sound mode (or automatically chosen mode). Possible values are “STEREO” and “VIRTUAL DOLBY SURROUND”. It can also have been selected automatically by signalling bits (internal software). See DFU on how to change this item.

• AVL. Indicates the last status of AVL (Automatic Volume Level) as set by the customer: See DFU on how to change this item.

• Delta Volume. Indicates the last status of the delta volume for the selected preset as set by the customer: from “-12” to “+12”. See DFU on how to change this item.

• Volume. Indicates the last status of the volume for the selected preset as set by the customer: from “0” to “100”. See DFU on how to change this item.

• Balance. Indicates the last status of the balance for the selected preset as set by the customer: from “-10” to “+10”. See DFU on how to change this item.

• Preset Lock. Indicates if the selected preset has a child lock: “LOCKED” or “UNLOCKED”. See DFU on how to change this item.

• Child Lock. Indicates the status of the Child lock. See DFU on how to change this item.

• Lock After. Indicates at what time the channel lock is set: “OFF” or e.g. “18:45” (lock time). See DFU on how to change this item.

• Parental Rating Lock. Indicates the “Parental rating” as set by the customer. See DFU on how to change this item.

• Parental Rating Status. Indicates the “Parental rating” as transmitted by the broadcaster (if applicable). If the parental rating status is indicating a higher age then the parental rating lock as set by the customer, you will need to enter the child lock code.

• TV Ratings Lock. Only applicable for US.

• Movie Ratings Lock. Only applicable for US.

• On timer. Indicates if the “On timer” is set “ON” or “OFF” and when it is set to “ON”, also start time, start day and program number is displayed. See DFU on how to change this item.

• Location. Gives the last status of the location setting as set via the installation menu. Possible values are “SHOP” and “HOME”. If the location is set to “SHOP”, several settings are fixed. So for a customer location must be set to “HOME”. Can be changed via the installation menu (see also DFU).

• HDMI Key Validity. Indicates if the HDMI keys (or HDCP keys) are valid or not. In case these keys are not valid and

EN 20 Q522.2E LA5.

Service Modes, Error Codes, and Fault Finding

the customer wants to make use of the HDMI functionality, the SSB has to be replaced.

• Tuner Frequency. Indicates the frequency the transmitter is tuned to.

• TV System. Gives information about the video system of the selected transmitter. In case a DVBT signal is received this item will also show ATSC. – BG: PAL BG signal received – DK: PAL DK signal received – L/La: SECAM L/La signal received – I: PAL I signal received – M: NTSC M signal received – ATSC: ATSC signal received – DVB: DVBT signal received

• 12NC One Zip SW. Displays the 12NC number of the onezip file as it is used for programming software in production. In this one-zip file all below software versions can be found.

• Initial Main SW. Displays the main software version which was initially loaded by the factory.

• Current Main SW. Displays the built-in main software version. In case of field problems related to software, software can be upgraded. As this software is consumer upgradable, it will also be published on the Internet. Example: Q582E_1.2.3.4.

• Flash Utils SW. Displays the software version of the software which contains all necessary components of the download application. To program this software, EJTAG tooling is needed. Example: Q582E_1.2.3.4.

• Stand-by SW. Displays the built-in stand-by processor software version. Upgrading this software will be possible via ComPair or via USB (see chapter Software upgrade). Example: STDBY_3.0.1.2.

• MOP SW. Only applicable for US. At the time of release of this manual, there was still a problem with this item, and some rubbish was displayed. Ignore this.

• Pacific 3 Flash SW (if applicable). Displays the Pacific 3 software version.

• NVM Version. Displays the NVM version as programmed by factory.

• Display Parameters. for development purposes only.

• Private PQ Parameters. for development purposes only.

• Public PQ Parameters. for development purposes only.

• Ambilight Parameters. for development purposes only.

• Acoustics Parameters. for development purposes only.

• DFI Software (if applicable). Displays the DFI EPLD software.

• DFI Ambilight software (if applicable). Displays the DFI ambilight EPLD software.

How to Exit CSM

Press “MENU” on the RC-transmitter.

5.3 Stepwise Start-up

There are two possible situations: one for protections detected by the stand-by software and one for protections detected by the main software. When the TV is in a protection state due to an error detected by stand-by software (and thus blinking an error) and SDM is activated via short-circuiting the pins on the SSB, the TV starts up until it reaches the situation just before protection. So, this is a kind of automatic stepwise start-up. In combination with the start-up diagrams below, you can see which supplies are present at a certain moment. Important to know is, that if e.g. the 3V3 detection fails (and thus error 8 is blinking) and the TV is restarted via SDM, the Stand-by Processor will enable the 3V3, but will not go to protection now. The TV will stay in this situation until it is reset (Mains/AC Power supply interrupted). Caution: in case the start up in this mode with a faulty FET 7U08 is done, you can destroy all ICs supplied by the +3V3, due to overvoltage. It is recommended to measure first the FET 7U08 on short-circuit before activating SDM via the service pads. When the TV is in protection state due to an error detected by main software (MIPS protection) and SDM is activated via short-cutting the service pads on the SSB, the TV starts up and ignores the error. In this chassis, only error “63” (power-ok) is a MIPS protection and already displays the failure via blinking LED.

The abbreviations “SP” and “MP” in the figures stand for:

• SP: protection or error detected by the Stand-by Processor.

• MP: protection or error detected by the MIPS Main Processor.

Off

Mains

off

- WakeUp requested

- Acquisition needed

- No data Acquisition required

- Tact SW pushed

- Last status is hibernate after mains ON

Tact sw itch

pushed

- Tact sw itch pushed

- last status is hibernate after mains ON

St by

Hibernate

The Protect ion state and t he Hibernate state are hard ware wise identical to the Standby st ate but have oth er , more limited wake up reasons.

Figure 5-3 Transition diagram

Mains

Semi St by

GoToProtection

WakeUp

requested

- St by requested

- Tact SW pushed

WakeUp

requested

(SDM)

Protection

Active

GoToProtection

I_18010_077.eps

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Service Modes, Error Codes, and Fault Finding

Off/Stby to Semi

EN 21Q522.2E LA 5.

Off

Mains is app lied

Standby Supply starts running.

All standby supply voltages become available .

st-by µ P resets

All I/O lines have a High default state:

- Switch PNX8541 in reset (active LOW).

- Keep the Audio-reset high.

- NVM p ower line is h igh, no NVM co mmunication p ossible.

Initialise I/O pins of the st-by µP, start keyboard scanning, RC

detection. Wake up reasons are off.

Switch ON PSU supply by switching LOW the Standby I/O

Wait 50m s and then star t polling th e DETECT 2

line.

+12V is switched on

every 40ms.

2900 ms

Yes

activate DETECT 2 algorithm

Enable the supply for

+3V3 an d +5V (ENABLE- 3V3)

Start polling the detect 1

every 40ms

Stand by or

Protection

If the protection state was left by short circuiting the

SDM pins, detection of a protection condition during

startup will stall the startup. Protection conditions in a

playing set will be ignor ed. Th e protectio n mode will

not be entered.

- Switch Audio-Reset high.

It is low in the standby mode if the standby

mode lasted longer than 10s.

12V supply” error 6DETECT 2 received within

Restart

DETECT 1 = High

within

250 ms after enable-3V3 toggle?

Yes

Activate DETECT 1 algorithms

Wait 20ms

SUPPLY-F AULT I/O line

is High ?

Yes

Enable the supply fault detection

algorithm

Set I²C slave address

Release AVC system reset

Feed warm boot script

Switch LOW the RESET-NVM_WP-NANDFLASH line. Add a 2ms delay

before trying to address the NVM to allow correct NVM initialization.

of Standby µP to (A0h)

Detect EJTAG debug probe

(pulling pin of the probe interface to

ground by inserting EJTAG probe)

EJTAG probe

connected ?

Cold boot?

Yes

Relea se AVC system r eset

Feed cold boot script

Standby line set to HIGH for 5

Detect 1 = High?

Standby line set to HIGH for 5

seconds

Yes

seconds

This will allow access to NVM and NAND FLASH and can not be done earlier because the FLASH needs to be in Write Protect as long as the supplies are not available.

An EJTAG probe (e.g. WindPower ICE probe) can be connected for Linux Kernel debugging purposes.

Yes

Release AVC system reset Feed initializing boot script

disable alive mechanism

Voltage output error: 8Supply Fault = High? Yes

Supply fault error 9

I_18010_069a.eps

110608

Figure 5-4 “Off” to “Semi Stand-by” flowchart (part 1)

EN 22 Q522.2E LA5.

(pulli

Service Modes, Error Codes, and Fault Finding

ng pin of the probe interface to

ground by inserting EJTAG probe)

EJTAG probe

connected ?

An EJTAG probe (e.g. WindPower ICE probe) can be connected for Linux Kernel debugging purposes.

Yes

Release AVC system reset

Feed warm boot script

Code = 5

Switch AVC PNX85 41

in reset (active lo w)

Wait 10ms

Switch t he NVM re set

line HIGH .

Disable all supply related protections and

switch off the +2V5, +3V3 DC/DC converter.

Code = 53

Cold boot?

Yes

Relea se AVC system r eset

Feed cold boot script

Bootscript ready

in 1250 ms?

Yes

Set I²C slave address

of Standby µP to (60h)

RPC start (comm. protocol)

Flash to RAM image tran sfer succee ded

within 30s?

Yes

SW initializat ion

succeede d within 20s?

Yes

Enable Alive check mechanism

MIPS reads the wake up reason

from standby µP.

Release AVC system r eset Feed initializing boot script

disable alive mechanism

Wait until AVC starts to

commun icate

3-th try?

Yes

Blink Code as

error code

- Channeldecoder type TDA10048 can be reloaded without reset.

Wait 5ms

switch of f the rema ining DC/DC

conver ters

Switch Standby

I/O line high.

Channel decoder

TDA 10048?

Third try?

Yes

Log channel decoder error

Start 4 seconds preheating timer in case of

an LPL scanning backlight LCD set.

Initialize a udio

Download firmware into the channel

decoder

Yes

Downloaded

successfull y?

Initialize tuner , Master IF and chan nel

Wait until Cpipe delivers a stable output

Initialize AutoTV by tr iggering CHS AutoT V Init inter face

Do not enter Semi-- Standby state in case of an LPL scanning backlight LCD set before 4s preheating timer has elapsed.

Yes

decoder

Initialize source selectio n

clock

Semi-Standby

Import ant remark :

Input v ertical frequency

changes (48 /50/60H z)

detect ed during startup

sequence should not be

taken int o account . The

end situat ion should

alway s be safeguarded .

I_18010_069b.eps

110608

Figure 5-5 “Off” to “Semi Stand-by” flowchart (part 2)

Service Modes, Error Codes, and Fault Finding

Constraints taken into account:

- Display may only be started when valid LVDS output clock can be delivered by the AVC .

- Between 5 and 50 ms after power is supplied, display should receive valid LVDS clock.

- Backlight Control PWM output should always keep low until LVDS power is supplied .

- Minimum wait time to switch “on” the lamp after power up is 200ms.

- To have a reliable operation of the backlight, the backlight should be driven with a PWM duty cycle of 100% during the first 2 seconds. Only after this first 2 seconds, the PWM may be set to the required output level (Note that the PWM output should be present before the backlight is switched on). To minimize the artefacts, the picture should only be unblanked after this first second.

EN 23Q522.2E LA 5.

action holder: AVC

action holder: St-by

autonomous action

The assumption h ere is that a fast toggle (<2s)

can only happen during ON->SEMI ->ON. In

these states, the AVC is still active and can provide t he 2s delay. If the t ransition ON-> SEMI>STBY->SEMI->ON can be made in less than 2s,

we have to delay t he semi -> stby transition until

CPipe already generates a valid output

clock in t he semi -standby state: displa y

startup can start immediately when leaving

the semi-standby state.

the requ irement is met.

Rewrite Pacific register 0x03 (output format) with TcuUpdate:

this command is sometimes not processed properly by the

Pacific at initialisation time , resending it here solves the issue.

Switch on the display by switching CTRL1- MIPS_LCD-

Switch off the dimming backlight feature and

Semi Standby

Wait until previous on-state is left more than 2

seconds ago. (to prevent LCD display problems)

Assert RGB video blanking

and audio mute

PWR-ON to low.

Enable Backlight Control PWM output

wait 250ms (m in. = 200ms)

make sure PWM output is set to 100%

Initialize audio and video

processing IC's and functions

according needed use case.

Switch “on” LCD backlight

The higher level requirement is that

audio and video should be demuted

without transient effects and that the

audio should be demuted maximum 1s

before or at the same time as the

unblanking of the video.

Figure 5-6 “Semi Stand-by” to “Active” flowchart (non-DFI)

Wait until valid and stable audio and video, corr esponding to

the requested output is delivered by the AVC AND the

backlight PWM has been on for 2 seconds.

Switch Audio -Reset low and wait 5ms

Release audio mute and wait 100ms before any other audio

handling is done (e.g. volume change).

Restore dimming backlight feature, PWM output and unblank

the video.

Active

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EN 24 Q522.2E LA5.

Service Modes, Error Codes, and Fault Finding

Active

Mute all sound outputs via softmute

Wait 100ms

Set main amplifie r mute (I/O : audio-mute )

Force ext. audio outputs to ground

(I/O: audio reset)

and wait 5ms

Switch “off” LCD backlight

Mute all video outputs

Wait 25 0ms (min. = 200ms)

action holder: AVC

action holder: St-by

autonomous action

Switch “off” the display by sending the

PanelConfig.PanelOff (I²C) command to the Pacific

Switch “off” ambient light

Semi Standby

Figure 5-7 “Active” to “Semi Stand-by” flowchart (non-DFI)

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Semi Stand by

If ambientlight functionality was used in semi -standby (lampadaire mode), switch “off” ambient light

EN 25Q522.2E LA 5.

Delay transition until ramping down of ambient light is

finished. *)

Transfer Wake up reasons to the Stand by µP.

Switch Memories to self-refresh (this creates a more

stable condition when switching “off” the power).

Switch AVC system in reset state

Wait 10ms

Switch the NVM reset line HIGH.

Disable all supply related protections and switch “off”

the DC/DC converter ( via the Enable-3V3 I/O line)

Wait 5ms

*) If this is not performed and the set is switched to standby when the switch “off” of the ambilights is still ongoing , the lights will switch “off” abruptly when the supply is cut.

Import ant remark:

release reset audio 10 sec after

entering standby to save power

Switch “off” the +1V2 DC/DC converters

Switch “off” all supplies by switching HIGH the

standby I/O line..

Stand by

Figure 5-8 “Semi Stand-by” to “Stand-by” flowchart

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action holder: MIPS

action holder: St-by

autonomous action

If needed to speed up this transition,

this block could be omitted. This is

depending on the outcome of the

safety investigations .

Log the appropriate err or and

set stand-by flag in NVM

Redefine wake up reasons for protection

state and transfer to stand-by µP.

Switch “off” LCD lamp supply

Wait 250ms (min. = 200ms)

Switch “off” LVDS signal

Switch “off” 12V LCD supply within a time frame of

min. 0.5ms to max. 50ms after LVDS switch “off”.

Ask stand-by µP to enter protection state

Switch AVC in reset state

Wait 10ms

Switch the NVM r eset line HIGH.

Disable all supply related protections and switch “off”

the +1V8 and the +3V3 DC/DC converter.

Wait 5ms

Switch “off” the +1V2 DC/DC converter

Switch “off” all supplies by switching HIGH the

Flash the Protection-LED in order to indicate

Standby I/O lines.

protection state *

Protection

Figure 5-9 “To Protection” state flowchart

(*): This can be the “Standby” LED or the “On” LED

depending on the availability in the set under discussion.

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supply detection algorithms for DC-DC outputs

EN 27Q522.2E LA 5.

Polling every 40ms

DETECT 1 = Low ?

Yes

Check DETECT1 5 times

( within 500us )

Yes

DETECT 1 = Low ?

5 consecutive times ?

Shutdown ( Active to

Semistdby to standby )

Wait for 5 seconds

Restart

Figure 5-10 “DC-DC output control” flowchart

supply fault detection algorithm

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SUPPLY- FAULT = LOW f or

DETECT1 = High ?

Shutdown ( Active to

Semist dby to sta ndby )

Wait for 5 seconds

Restart

Figure 5-11 “Supply fault detection” flowchart

1ms ?

Yes

Error 9

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+12V supply

detection algorithm.

Polling every 40ms

DETECT 2 = Low ?

Check DETECT2 5 times

( within 500us)

DETECT 2 = Low ?

5 consecutive times ?

Shutdown ( Active to

Semist dby to sta ndby )

Wait for 5 seconds

Restart

Figure 5-12 “+12V fault detection” flowchart

Yes

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EN 29Q522.2E LA 5.

5.4 Service Tools

5.4.1 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).

How to Connect

This is described in the ComPair chassis fault finding database.

TO TV

TO I2C SERVICE CONNECTOR

Multi

function

UART SERVICE

CONNECTOR

ComPair II

RC in

Optional

Switch

Power ModeLink/

Activity

UART SERVICE

RC out

CONNECTOR

C or UART commands

RS232 /UART

5.5 Error Codes

5.5.1 Introduction

The error code buffer contains all detected errors since the last time the buffer was erased. The buffer is written from left to right, new errors are logged at the left side, and all other errors shift one position to the right. When an error occurs, it is added to the list of errors, provided the list is not full. When an error occurs and the error buffer is full, then the new error is not added, and the error buffer stays intact (history is maintained). To prevent that an occasional error stays in the list forever, the error is removed from the list after more than 50 hrs. of operation. When multiple errors occur (errors occurred within a short time span), there is a high probability that there is some relation between them.

Basically there are three kinds of errors:

• Errors detected by the Stand-by software. These errors will always lead to protection and an automatic start of the blinking LED for the concerned error (see paragraph “The Blinking LED Procedure”). In these cases SDM can be used to start up (see chapter “Stepwise Start-up”). Note that it can take up to 90 seconds before the TV goes to protection and starts blinking the error (e.g. error 53)

• Errors detected by main software that lead to protection. In this case the TV will go to protection and the front LED should also blink the concerned error. See also paragraph “Error Codes” -> “Error Buffer” -> “Extra Info”. For this chassis only error 63 is a protection error detected by main software.

• Errors detected by main software that do not lead to protection. In this case the error will be logged into the error buffer and can be read out via ComPair, via blinking LED method, or in case you have picture, via SAM.

ComPair II Developed by Philips Brugge

Optional power HDMI I

C only

5V DC

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Figure 5-13 ComPair II interface connection

Caution: The way of connection for this chassis is different

compared to the other Q52x chassis! This chassis uses UART communication instead of RS232 which means that the voltage levels are different. When you connect this chassis with a ComPair RS232 cable, this might result in damaging the TV!

Therefore, it is compulsory to use ComPair II interface together with the below mentioned Jack/Jack cable.

How to Order

ComPair II order codes:

• ComPair II interface: 3122 785 91020.

• The latest ComPair software can be found on the Philips Service website.

• ComPair Jack/Jack cable: 3138 188 75051.

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

5.4.2 LVDS Tool

Support of the LVDS Tool has been discontinued.

5.5.2 How to Read the Error Buffer

Use one of the following methods:

• On screen via the SAM (only if you have a picture). E.g.: – 00 00 00 00 00: No errors detected – 06 00 00 00 00: Error code 6 is the last and only

detected error

– 09 06 00 00 00: Error code 6 was first detected and

error code 9 is the last detected error

• Via the blinking LED procedure (when you have no picture). See next paragraph.

•Via ComPair.

• Via CSM. when CSM is activated the blinking LED procedure will start and the CSM content will be written to a USB stick (if present).

5.5.3 How to Clear the Error Buffer

Use one of the following methods:

• By activation of the “RESET ERROR BUFFER” command in the SAM menu.

• With a normal RC, key in sequence “MUTE” followed by “062599” and “OK”.

• If the content of the error buffer has not changed for 50+ hours, it resets automatically.

5.5.4 Error Buffer

In case of non-intermittent faults, clear the error buffer before you begin the repair (before clearing the buffer, write down the content, as this history can give you significant information). This to ensure 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

EN 30 Q522.2E LA5.

Service Modes, Error Codes, and Fault Finding

code and not the actual cause (e.g., a fault in the protection detection circuitry can also lead to a protection). There are several mechanisms of error detection:

• Via error bits in the status registers of ICs.

• Via polling on I/O pins going to the stand-by processor.

• Via sensing of analogue values on the stand-by processor or the PNX85xx.

• Via a “not acknowledge” of an I

C communication.

Take notice that some errors need more than 90 seconds before they start blinking or before they will be logged. So in case of problems wait 2 minutes from start-up onwards, and then check if the front LED is blinking or if an error is logged.

Error Description Error/

3 I2C3 E MIPS PNX85xx Error ogged.

5 PNX85xx does not

boot (HW cause)

6 5V, 12V supply P Stby P / Protection +

8 1V2, 1V4, 2V5, 3V3

supply

9 Supply fault P Stby P / Protection +

23 HDMI mux E MIPS AD8190/8191/

26 Master IF E MIPS TDA9898/9897/

34 Tuner E MIPS TD1716 Error logged.

37 Channel decoder E MIPS TDA10060/

53 PNX85xx does not

boot (SW cause)

DetectedbyDevice Result

Prot

E Stby P PNX85xx Error blinking.

Error blinking.

P Stby P / Protection +

8197

9890

TDA10048

E Stby P PNX85xx Error blinking.

Error blinking.

Error logged.

Extra Info

• Rebooting. When a TV is constantly rebooting due to internal problems, most of the time no errors will be logged or blinked. This rebooting can be recognized via a ComPair interface and Hyperterminal (for Hyperterminal settings, see paragraph “Stand-by software upgrade). You will see that the loggings which are generated by the main software keep continuing. In this case (rebooting) diagnose has to be done via ComPair.

• Error 3 (I

C bus 3 blocked). When this error occurs, the TV will constantly reboot due to the blocked bus. The best way for further diagnosis here, is to use ComPair (e.g. read out the NVM content). Instead of error “3” it is possible you will see error “2” in the error buffer.

• Error 5 (PNX85xx doesn’t boot). When this error occurs, the TV main processor was not able to read his bootscript. This error will point to a hardware problem around the PNX85xx (supplies not OK, PNX 8535 completely dead, I2C link between PNX and Stand-by Processor broken, etc...). When error 5 occurs it is also possible that I2C2 bus is blocked (NVM). I2C2 can be indicated in the schematics as follows: SCLUP-MIPS, SDA-UP-MIPS, SCL-SLAVE, SDA-SLAVE, SCL-2 or SDA-2.

• Error 6 (5V, 12V supply). When this error occurs, the TV set shutdown in protection mode and follow with the Error blinking.This error will point to a hardware problem around the DC/DC (B02C) probably 5V supply is under voltage cause the "PROT-DC" (B02C) line activated. Or another possibility is the 12V supply under voltage cause the "DETECT2" (B04A) line activated.

• Error 8 (1V2, 3V3 supply). When this error occurs, the TV set shutdown in protection mode and follow with the Error blinking. This error will point to a hardware problem around

the DC/DC +3V3-STANDBY_+1V2-STANDBY (B02B) probably 1V2 STANDBY and 3V3 STANDBY under voltage cause the "DETECT1" (B04A) line activated.

• Error 9 (Supply fault). When this error occurs, the TV set shutdown in protection mode and follow with the Error blinking. This error will point to a hardware problem around the DC/DC 3V3_1V2 (B02A) probably the CLASS D amplifier output cause the "SUPPLY FAULT" (B10A) line activated.

• Error 23 (HDMI MUX). When this error occurs it means that there is a problem with the I2C communication towards the HDMI MUX IC AD8197. This error will point to a hardware problem around the Digi IO HDMI MUX (B08C). It is possible you will see error "23" logged in the error buffer. The best way for further diagnosis, is to use ComPair (e.g. read out the NVM content).

• Error 26 (Master IF). When this error occurs it means that there is a problem with the I2C communication towards the MASTER IF TDA9898. it is probably will be no picture and sound from tuner input. This error will point to a hardware problem around the Main Tuner (B03A) IF processing IC. It is possible you will see error "26" logged in the error buffer.

• Error 34 (Tuner). When this error occurs it means that there is a problem with the I2C communication towards the Tuner 1716. There probably will be no picture and sound from tuner input.

• This error will point to a hardware problem around the Main Tuner (B03A). As a side effect of error 34, it is possible that error 24 (no existing error) is also logged.

• Error 37 (Channel decoder). When this error occurs, there probably will be no picture and sound from tuner input. As a side effect of error 37 it is possible that error 4 (no existing error) is also logged.

• Error 53. This error will indicate that the PNX85xx has read his bootscript (if this would have failed, error 5 would blink) but initialization was never completed because of hardware problems (NAND flash, ...) or software initialization problems. Possible cause could be that there is no valid software loaded (try to upgrade to the latest main software version). Note that it can take up to 2 minutes before the TV starts blinking error 53.

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