Philips LC8.1U LA Service Manual

Color Television Chassis

ME8

LC8.1U

ME8

H_17740_000.eps

170108

Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis Overview 2

2. Safety Instructions, Warnings, and Notes 5

3. Directions for Use 6

4. Mechanical Instructions 7

5. Service Modes, Error Codes, and Fault Finding 13

6. Block Diagrams, Test Point Overview, and

Waveforms

Wiring Diagram 42” & 47” (ME8) 27 Block Diagram Video 28 Block Diagram Audio 29 Block Diagram Control & Clock Signals 30 SSB: Test Points (Bottom Side) 31 I2C IC Overview 31 Supply Lines Overview 31

7. Circuit Diagrams and PWB Layouts Diagram PWB SSB: DC / DC Converter (B1) 34 51-60 SSB: Tuner & Demodulator (B2) 35 51-60 SSB: Class-D & Muting (B3) 36 51-60 SSB: MT5382-Power & Tuner (B4A) 37 51-60 SSB: MT5382-DDR2 SDRAM (B4B) 38 51-60 SSB: MT5382-Flash & NVM (B4C) 39 51-60 SSB: MT5382-LVDS (B4D) 40 51-60 SSB: MT5382-HDMI & Mux (B4E) 41 51-60 SSB: MT5382-Analog I/Os (B4F) 42 51-60 SSB: MJC MT8280-Power (B5P) 43 51-60 SSB: MJC MT8280-DDR2 (B5Q) 44 51-60 SSB: MJC MT8280-LVDS (B5R) 45 51-60 SSB: FPGA-AmbiLight (B6K) 46 51-60 SSB: ITV-Channel Decoder (B7L) 47 51-60 SSB: ITV-Proidiom (B7M) 48 51-60 SSB: SRP List Explanation 49 SSB: SRP List Part 1 50

Keyboard Control Panel (E) 61 61 IR & LED Panel (J) 62 63

8. Alignments 65

9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 69 Abbreviation List 79 IC Data Sheets 81

10. Spare Parts List 85

11. Revision List 91

Copyright 2008 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 WS 0861 BU CD Consumer Care Printed in the Netherlands Subject to modification EN 3122 785 17740

EN 2 LC8.1U 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 : 42" (107 cm), 16:9

Resolution (H × V pixels) : 1920 × 1 080 Dyn. contrast ratio : 29000:1 Min. light output (cd/m Typ. response time (ms) : 2 (4xPFL7x03/27)

Viewing angle (H × V degrees) : 176 × 176 Tuning system : PLL Presets/channels : 100 presets Tuner bands : VHF, UHF, S, H TV Color systems : ATSC

Video playback : NTSC Cable : Unscrambled digital

Supported computer formats : 640 × 480 @ 60 Hz

Supported video formats : 1080i @ 60 Hz

) : 500

: 47" (120 cm), 16:9

: 8 (4xPFL5603D/27)

:NTSC

data - QAM

: 800 × 600 @ 60 Hz : 1024 × 768 @ 60 Hz : 1280 × 1024 @ 60 Hz : 1280 × 768 @ 60 Hz : 1360 × 768 @ 60 Hz : 1920 × 1080i @ 60 Hz : 1920 × 1080p@ 60 Hz

: 1080p @ 60 Hz : 480i @ 60 Hz : 480p @ 60 Hz : 720p @ 60 Hz

1.1.3 Miscellaneous

Power supply:

- Mains voltage (V

- Mains frequency (Hz) : 50 / 60

Ambient conditions:

- Temperature range (°C) : +5 to +40

- Maximum humidity : 90% R.H.

Power consumption (values are indicative)

- Normal operation (W) : ≈ 240

- Stand-by (W) : < 1

Dimensions (W × H × D inch)

- 42PFL5603D/27 : 41.2 × 25.4 × 3.5

- 42PFL7403D/27 : 41.2 × 25.4 × 3.5

- 42PFL7603D/27 : 41.2 × 25.4 × 4.26

- 47PFL5603D/27 : 45.8 × 28.0 × 4.1

- 47PFL7403D/27 : 45.8 × 28.0 × 4.1

- 47PFL7603D/27 : 45.8 × 28.0 × 4.5

Weight incl. packaging (lb.)

- 42PFL5603D/27 : 68.92

- 42PFL7403D/27 : 68.92

- 42PFL7603D/27 : 68.92

- 47PFL5603D/27 : 101.60

- 47PFL7403D/27 : 101.60

- 47PFL7603D/27 : 103.73

) : 90 - 240

: ≈ 250

(4xPFL7603/27)

1.1.2 Sound

Sound systems : Stereo

Maximum power (W

) : 2 × 30

RMS

: BBE : Dolby Digital

:2 × 25

(4xPFL5603D/27)

Technical Specifications, Connections, and Chassis Overview

EN 3LC8.1U LA 1.

1.2 Connection Overview

Figure 1-1 Side and rear I/O connections

Note: The following connector color abbreviations are used

(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, and Ye= Yellow.

1.2.1 Side Connections

Head phone - Out

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

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

HDMI: Digital Video, Digital Audio - In

18 2

Figure 1-2 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

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

/ 75 ohm j

E_06532_017.eps

250505

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USB2.0

1234

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300904

Figure 1-3 USB (type A)

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

1.2.2 Rear Connections

HDMI1, 2 & 3: Digital Video, Digital Audio - In

HDMI3: Cinch: DVI Audio - In

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

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

Aerial - In

- - F-type (US) Coax, 75 ohm D

AV1 & 2: Cinch: Video YPbPr - In, Audio - In

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

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

AV3: Cinch: Video CVBS - In, Audio - In

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

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

AV3: 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

P / 75 ohm j

Service Connector (UART)

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

Cinch: S/PDIF - Out

Bk - Coaxial 0.4 - 0.6V

/ 75 ohm kq

EN 4 LC8.1U LA1.

1.3 Chassis Overview

MAIN

SUPPLY PANEL

Technical Specifications, Connections, and Chassis Overview

KEYBOARD & CONTROL

PA NE L

IR & LED PANEL

MAIN

SUPPLY PANEL

KEYBOARD & CONTROL

PANEL

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Figure 1-4 PWB/CBA locations (42" models, 60 Hz 1080p, without AmbiLight)

SMALL SIGNAL

BOARD

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SMALL SIGNAL

BOARD

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IR & LED PANEL

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Figure 1-5 PWB/CBA locations (42" models, 120 Hz 1080p, with AmbiLight)

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Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

EN 5LC8.1U LA 2.

Index of this chapter:

2.1 Safety Instructions

2.2 Warnings

2.3 Notes

2.1 Safety Instructions

Safety regulations require the following during a repair:

• Connect the set to the Mains/AC Power via an isolation transformer (> 800 VA).

• Replace safety components, indicated by the symbol h, only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard.

Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points:

• Route the wire trees correctly and fix them with the mounted cable clamps.

• Check the insulation of the Mains/AC Power lead for external damage.

• Check the strain relief of the Mains/AC Power cord for proper function.

• Check the electrical DC resistance between the Mains/AC Power plug and the secondary side (only for sets that have a Mains/AC Power isolated power supply):

1. Unplug the Mains/AC Power cord and connect a wire

between the two pins of the Mains/AC Power plug.

2. Set the Mains/AC Power switch to the “on” position

(keep the Mains/AC Power cord unplugged!).

3. Measure the resistance value between the pins of the

Mains/AC Power plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 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.

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 color bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or

61.25 MHz for NTSC (channel 3).

• Where necessary, measure the waveforms and voltages

with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in stand-by (F). These values are indicated by means of the appropriate symbols.

• 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= × 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

-9

), or pico-farads (p= × 10

-12

-6

EN 6 LC8.1U LA3.

avoid mixed regimes. If this cannot be avoided, carefully

clear the solder-joint from old tin and re-solder with new tin.

2.3.5 Alternative BOM identification

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 center (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:

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.

• Always respect voltages. While some may not be

32PF9968/10

AG 1A0617 000001

Figure 2-1 Serial number (example)

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.

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.

MADE IN BELGIUM

220-240V 50/60Hz

VHF+S+H+UHF

BJ3.0E LA

E_06532_024.eps

128W

130606

3. Directions for Use

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

4. Mechanical Instructions

Mechanical Instructions

EN 7LC8.1U LA 4.

Index of this chapter:

4.1 Cable Dressing

4.2 Service Positions

4.3 Assy/Panel Removal ME8 Styling

4.4 Set Re-assembly

4.1 Cable Dressing

Notes:

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

• Follow the disassemble instructions in described order.

Figure 4-1 Cable dressing (42" models, 60 Hz 1080p, without AmbiLight)

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Figure 4-2 Cable dressing (42" models, 120 Hz 1080p, with AmbiLight)

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EN 8 LC8.1U LA4.

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"

E_06532_018.eps

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Mechanical Instructions

Figure 4-3 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.

4.2.2 Service Stands

The MkII aluminium Service Stands are not suitable for this chassis. Use the stands that come with the set instead.

Mechanical Instructions

EN 9LC8.1U LA 4.

4.3 Assy/Panel Removal ME8 Styling

4.3.1 Back Cover

Warning: Disconnect the mains power cord before you remove

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

Warning: Most sets have an additional hatch located in the back cover. These are meant for disconnecting the flat cables to the AmbiLight units in the back cover, before the back cover is lifted from the set. The hatches are not always located at the

same place for all sets, therefore the figures below are only meant as indication. It is mandatory to locate these hatches first, open them, and unplug connectors behind. Lifting the back cover without having done so, could result in damaging the connectors inside!

Refer to next figures for details.

1. First remove the screws [1] from the back cover hatch and remove the hatch.

2. Then unplug connector(s) [3].

3. Remove the screws [2], gently lift the back cover from the set. Make sure that wires and flat coils are not damaged while lifting the back cover from the set.

2222

Figure 4-4 Back Cover Removal [1/2]

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Figure 4-5 Back Cover Removal [2/2]

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EN 10 LC8.1U LA4.

Mechanical Instructions

4.3.2 Ambilight (if present)

Refer to next figure for details.

1. Unplug the connectors [1].

2. Remove the screws [2].

3. Pull the unit sidewards from the back cover. When defective, replace the whole unit.

Figure 4-6 Ambilight Unit

4.3.3 Woofers

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4.3.5 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 it in the indicated direction [2].

3. Lift the board and take it out of the set.

When defective, replace the whole unit.

H_17650_098.eps

Figure 4-9 IR & LED Board

4.3.6 Key Board

180108

Refer to next figure for details.

1. Remove the screws [1] and [2] and lift the whole unit from the back cover.

Take the speakers out together with their casing. When defective, replace the whole unit.

Figure 4-7 Woofer

4.3.4 Tweeters

Refer to next figure for details. Warning: The speakers should never be connected or disconnected when the set is playing! This can damage the amplifiers on the SSB.

1. Remove the screws [1] and lift the whole unit from the back cover.

When defective, replace the whole unit.

H_17740_023.eps

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Refer to next figure for details.

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.

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Figure 4-10 Key Board

Figure 4-8 Tweeter

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Mechanical Instructions

EN 11LC8.1U LA 4.

4.3.7 Display Supply Panel

Refer to next figure for details.

1. Unplug connectors [1].

2. Remove the fixation screws [2].

3. Take the board out.

4.3.8 Small Signal Board (SSB)

Refer to below figure for details. Caution: it is mandatory to remount all different screws at their original position during re-assembly. Failure to do so may result in damaging the SSB. Refer to next figures or details.

H_17740_021.eps

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

2. Unplug the connectors [2].

3. Remove the screws [3].

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 [4] and lift it of while releasing clips [5].

6. Release clip [6] and slide the cover sidewards from the SSB.

Figure 4-11 Display Supply Panel

OPTIONAL

4 4 4 4 4 4

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Figure 4-12 Small Signal Board

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EN 12 LC8.1U LA4.

4.3.9 LCD Panel

Refer to next figures for details.

1. Remove the stand.

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

3. Unplug the connectors [2].

4. Remove the fixation screws [3] from rim.

5. Take the rim from the set.

6. Remove the fixation screws [4] and [5].

7. Lift the subframe from the set.

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

Mechanical Instructions

4.4 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 on the SSB shields. Ensure that EMC foams are mounted correctly.

H_17740_020.eps

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Figure 4-13 LCD Panel

Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

EN 13LC8.1U LA 5.

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Service Tools

5.4 Error Codes

5.5 The Blinking LED Procedure

5.6 Fault Finding and Repair Tips

5.7 Software Upgrading

5.1 Test Points

In the chassis schematics and layout overviews, the test points are mentioned. In the schematics, test points are indicated with “Fxxx” or “Ixxx”, in the layout overviews with a “half-moon” sign. As most signals are digital, it will be difficult to measure waveforms with a standard oscilloscope. 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: Color bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 Service Modes

The Service Mode feature is split into four parts:

• Service Default Mode (SDM).

• Service Alignment Mode (SAM).

• Customer Service Mode (CSM).

• Computer Aided Repair Mode (ComPair).

SDM and SAM offer features, which can be used by the Service engineer to repair/align a TV set. Some features are:

• A pre-defined situation to ensure measurements can be made under uniform conditions (SDM).

• Activates the blinking LED procedure for error identification when no picture is available (SDM).

• The possibility to overrule software protections when SDM is entered via the Service pins.

• Make alignments (e.g. White Tone), (de)select options, enter options codes, reset the error buffer (SAM).

• Display information (“SDM” or “SAM” indication in upper right corner of screen, error buffer, software version, operating hours, options and option codes, sub menus).

The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. In CSM mode, “CSM”, is displayed in the top right corner of the screen. The information provided in CSM and the purpose of CSM is to:

• Increase the home repair hit rate.

• Decrease the number of nuisance calls.

• Solved customers' problem without home visit.

ComPair Mode is used for communication between a computer and a TV on I2C /UART level and can be used by a Service engineer to quickly diagnose the TV set by reading out error codes, read and write in NVMs, communicate with ICs and the uP (PWM, registers, etc.), and by making use of a fault finding database. It will also be possible to up and download the software of the TV set via I2C with help of ComPair. To do this, ComPair has to be connected to the TV set via the ComPair connector, which will be accessible through the rear of the set (without removing the rear cover).

5.2.1 General

Some items are applicable to all Service Modes or are general. These are listed below.

Life Timer

During the life time cycle of the TV set, a timer is kept (called “Op. Hour”). It counts the normal operation hours (not the Stand-by hours). The actual value of the timer is displayed in SDM and SAM in a decimal value. Every two soft-resets increase the hour by +1. Standby hours are not counted.

Software Identification, Version, and Cluster

The software ID, version, and cluster will be shown in the main menu display of SDM, SAM, and CSM. The screen will show: “AAAABCD X.YY”, where:

• AAAA is the chassis name: LC81.

• B is the region indication: E= Europe, A= AP/China, U= NAFTA, L= LATAM.

• C is the display indication: L= LCD, P= Plasma.

• D is the language/feature indication: P= Philips, M= Magnavox.

• X is the main version number: this is updated with a major change of specification (incompatible with the previous software version). Numbering will go from 1 - 9 and A - Z. – If the main version number changes, the new version

number is written in the NVM.

– If the main version number changes, the default

settings are loaded.

• YY is the sub version number: this is updated with a minor change (backwards compatible with the previous versions) Numbering will go from 00 - 99. – If the sub version number changes, the new version

number is written in the NVM.

– If the NVM is fresh, the software identification, version,

and cluster will be written to NVM.

Display Option Code Selection

When after an SSB or display exchange, the display option code is not set properly, it will result in a TV with “no display”. Therefore, it is required to set this display option code after such a repair. To do so, press the following key sequence on a standard RC transmitter: “062598” directly followed by MENU and “xxx”, where “xxx” is a 3 digit decimal value of the panel type: see column “Panel Code” in table “Option Codes OP1...OP7” (ch.

8), or see sticker on the side/bottom of the cabinet. When the

value is accepted and stored in NVM, the set will switch to Stand-by, to indicate that the process has been completed.

Display Option

Code

39mm

040

PHILIPS

MODEL:

32PF9968/10

27mm

PROD.SERIAL NO:

AG 1A0620 000001

(CTN Sticker)

E_06532_038.eps

Figure 5-1 Location of Display Option Code sticker

During this algorithm, the NVM-content must be filtered, because several items in the NVM are TV-related and not SSBrelated (e.g. Model and Prod. S/N). Therefore, “Model” and “Prod. S/N” data is changed into “See Type Plate”. In case a call centre or consumer reads “See Type Plate” in CSM mode, he needs to look to the side/bottom sticker to identify the set, for further actions.

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EN 14 LC8.1U LA5.

Service Modes, Error Codes, and Fault Finding

5.2.2 Service Default Mode (SDM)

Purpose

Set the TV in SDM mode in order to be able to:

• Create a pre-defined setting for measurements to be made.

• Override software protections.

• Start the blinking LED procedure.

• Read the error buffer.

• Check the life timer.

Specifications

Table 5-1 SDM default settings

Region Freq. (MHz) Default syst.

Europe (except France),

475.25 PAL B/G

AP-PAL/-Multi

France SECAM L

NAFTA, AP-NTSC 61.25 (channel 3) NTSC M

LATAM PAL M

• Set linear video and audio settings to 50%, but volume to 25%. Stored user settings are not affected.

• All service-unfriendly modes (if present) are disabled, since they interfere with diagnosing/repairing a set. These service unfriendly modes are: – (Sleep) timer. – Blue mute/Wall paper. – Auto switch “off” (when there is no “ident” signal). – Hotel or hospital mode. – Child lock or parental lock (manual or via V-chip). – Skipping, blanking of “Not favorite”, “Skipped” or

“Locked” presets/channels.

– Automatic storing of Personal Preset or Last Status

settings.

– Automatic user menu time-out (menu switches back/

OFF automatically.

– Auto Volume levelling (AVL).

How to Activate

To activate SDM, use one of the following methods:

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the MENU button (do not allow the display to time out between entries while keying the sequence).

• Short one of the “Service” jumpers on the TV board during cold start (see Figures “Service jumper”). Then press the mains button (remove the short after start-up). Caution: Activating SDM by shorting “Service” jumpers will override the DC speaker protection (error 1), the General I2C error (error 4), and the Trident video processor error (error 5). When doing this, the service-technician must know exactly what he is doing, as it could damage the television set.

On Screen Menu

After activating SDM, the following screen is visible, with SDM in the upper right corner of the screen to indicate that the television is in Service Default Mode.

H_17740_030.eps

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Figure 5-3 SDM menu

Menu explanation:

• HHHHH: Are the operating hours (in decimal).

• AAAABCD-X.YY: See paragraph “Service Modes” -> “General” -> “Software Identification, Version, and Cluster” for the SW name definition.

• EER: Shows all errors detected since the last time the buffer was erased. Five errors possible.

• OP: Used to read-out the option bytes. See “Options” in the Alignments section for a detailed description. Ten codes (in two rows) are possible.

How to Navigate

As this mode is read only, there is not much to navigate. To switch to other modes, use one of the following methods:

• Command MENU from the user remote will enter the normal user menu (brightness, contrast, color, etc...) with “SDM” OSD remaining, and pressing MENU key again will return to the last status of SDM again.

• To prevent the OSD from interfering with measurements in SDM, command “OSD” or “i+” (“STATUS” or “INFO” for NAFTA and LATAM) from the user remote will toggle the OSD “on/off” with “SDM” OSD remaining always “on”.

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the OSD/ STATUS/INFO/i+ button to switch to SAM (do not allow the display to time out between entries while keying the sequence).

How to Exit

Switch the set to STANDBY by pressing the mains button on the remote control transmitter or on the television set. If you switch the television set “off” by removing the mains (i.e., unplugging the television), the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared. The error buffer will only be cleared when the “clear” command is used in the SAM menu.

H_17740_031.eps

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Figure 5-2 Service jumper (SSB component side)

Note:

• If the TV is switched “off” by a power interrupt while in SDM, the TV will show up in the last status of SDM menu as soon as the power is supplied again. The error buffer will not be cleared.

• In case the set is in Factory mode by accident (with “F” displayed on screen), by pressing and hold “VOL-“ and “CH-” together should leave Factory mode.

Service Modes, Error Codes, and Fault Finding

EN 15LC8.1U LA 5.

5.2.3 Service Alignment Mode (SAM)

Purpose

• To change option settings.

• To display / clear the error code buffer.

• To perform alignments.

Specifications

• Operation hours counter (maximum five digits displayed).

• Software version, error codes, and option settings display.

• Error buffer clearing.

• Option settings.

• Software alignments (White Tone).

• NVM Editor.

• Set the screen mode to full screen (all content on screen is visible).

How to Activate

To activate SAM, use one of the following methods:

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the OSD/ STATUS/INFO/i+ button (it depends on region which button is present on the RC). Do not allow the display to time out between entries while keying the sequence.

• Or via ComPair.

After entering SAM, the following screen is visible, with SAM in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.

How to Navigate

• In the SAM menu, select menu items with the UP/DOWN keys on the remote control transmitter. The selected item will be indicated. When not all menu items fit on the screen, use the UP/DOWN keys to display the next / previous menu items.

• With the LEFT/RIGHT keys, it is possible to: – Activate the selected menu item. – Change the value of the selected menu item. – Activate the selected sub menu.

• When you press the MENU button twice while in top level SAM, the set will switch to the normal user menu (with the SAM mode still active in the background). To return to the SAM menu press the MENU button.

• The “OSD/STATUS/INFO/i+” key from the user remote will toggle the OSD “on/off” with “SAM” OSD remaining always “on”.

• Press the following key sequence on the remote control transmitter: “062596” directly followed by the MENU button to switch to SDM (do not allow the display to time out between entries while keying the sequence).

How to Store SAM Settings

To store the settings changed in SAM mode (except the OPTIONS and RGB ALIGN settings), leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. The mentioned exceptions must be stored separately via the STORE button.

How to Exit

Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set.

H_17740_025.eps

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Figure 5-4 SAM menu

Menu explanation:

1. System Information:

• Op. Hour. This represents the life timer. The timer counts normal operation hours, but does not count Stand-by hours.

• MAIN SW ID. See paragraph “Service Modes” -> “General” -> “Software Identification, Version, and Cluster” for the SW name definition.

• ERROR CODES. Shows all errors detected since the last time the buffer was erased. Five errors possible.

• OP1 / OP2. Used to read-out the option bytes. See “Options” in the Alignments section for a detailed description. Ten codes are possible.

2. Clear. Erases the contents of the error buffer. Select the CLEAR menu item and press the MENU RIGHT key. The content of the error buffer is cleared.

3. Options. Used to set the option bits. See “Options” in the “Alignments” chapter for a detailed description.

4. RGB Align. Used to align the White Tone. See “White Tone” in the “Alignments” chapter for a detailed description.

5. NVM Editor. Can be used to change the NVM data in the television set. See also paragraph “Fault Finding and Repair Tips” further on.

6. NVM Copy. Gives the possibility to copy/load the NVM file to/from an USB stick.

Note:

• When the TV is switched “off” by a power interrupt while in SAM, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

• In case the set is in Factory mode by accident (with “F” displayed on screen), by pressing and hold “VOL-“ and “CH-” together should leave Factory mode.

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Service Modes, Error Codes, and Fault Finding

5.2.4 Customer Service Mode (CSM)

Purpose

The Customer Service Mode shows error codes and information on the TV’s operation settings. A call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps them to diagnose problems and failures in the TV before making a service call. The CSM is a read-only mode; therefore, modifications are not possible in this mode.

Specifications

• Ignore “Service unfriendly modes”.

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

• Set the screen mode to full screen (all contents on screen is visible).

• After leaving the Customer Service Mode, the original settings are restored.

• Possibility to use “CH+” or “CH-” for channel surfing, or enter the specific channel number on the RC.

How to Activate

To activate CSM, press the following key sequence on a standard remote control transmitter: “123654” (do not allow the display to time out between entries while keying the sequence).

Upon entering the Customer Service Mode, the following screen will appear:

Menu Explanation

1. Model Number. Type number, e.g. 42PFL5603D/27. (*)

2. Production Serial Number. Product serial no., e.g. SV1A0805123456 (*). SV= Production center, 1= BOM code, A= Service version change code, 08= Production year, o5= Production week, 123456= Serial number.

3. Software Version. Main software cluster and version is displayed.

4. Option Code 1. Option code information (group 1).

5. Option Code 1. Option code information (group 2).

6. Codes. Error buffer contents.

7. SSB. Indication of the SSB factory ID (= 12nc). (*)

8. Display. Indication of the display ID (=12 nc). (*)

9. NVM Version. The NVM software version no.

10. PQ Version. PQ (picture quality) data version. This is a subset of the main SW.

11. Key (HDCP). Indicates if the HDMI keys (or HDCP keys) are valid or not.

12. Digital Signal Quality. Tuner signal condition in percentage.

13. Blank.

14. Audio System. Gives information about the audio system of the selected transmitter (MONO/STEREO).

15. HDAU. HDMI audio stream detection. “YES” means audio stream detected. “NO” means no audio stream present. Only displayed when HDMI source is selected.

16. Video Format. Gives information about the video format of the selected transmitter (480p30/720p60/1080i50/1080i60, etc...). Is applicable to both HDMI and CVI sources.

17. HD SW ID. Shows the HD DNM software version.

18. FPGA SW ID. Shows the FPGA software version (if present).

19. DFI SW ID. Shows the DFI software version (if present).

20. Standby uP SW ID. Shows the Standby Processor software version.

Figure 5-5 CSM menu -1- (example)

H_17740_028.eps

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H_17740_029.eps

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(*) If an NVM IC is replaced or initialized, these items must be re-written to the NVM. ComPair will foresee in a possibility to do this.

How to Exit

To exit CSM, use one of the following methods:

• Press the MENU button twice on the remote control transmitter.

• Press the POWER button on the remote control transmitter.

• Press the POWER button on the television set.

Figure 5-6 CSM menu -2- (example)

Service Modes, Error Codes, and Fault Finding

EN 17LC8.1U LA 5.

5.3 Service Tools

5.3.1 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 I2C or UART commands 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 up 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

UART SERVICE

CONNECTOR

I2C SERVICE CONNECTOR

UART SERVICE

CONNECTOR

5.4 Error Codes

5.4.1 Introduction

Error codes are required to indicate failures in the TV set. In principle a unique error code is available for every:

• Activated protection.

• Failing I2C device.

• General I2C error.

• SDRAM failure.

The last five errors, stored in the NVM, are shown in the Service menu’s. This is called the error buffer. The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right. An error will be added to the buffer if this error differs from any error in the buffer. The last found error is displayed on the left. An error with a designated error code may never lead to a deadlock situation. This means that it must always be diagnosable (e.g. error buffer via OSD or blinking LED procedure, ComPair to read from the NVM). In case a failure identified by an error code automatically results in other error codes (cause and effect), only the error code of the MAIN failure is displayed.

Example: In case of a failure of the I2C bus (CAUSE), the error code for a “General I2C failure” and “Protection errors” is displayed. The error codes for the single devices (EFFECT) is not displayed. All error codes are stored in the same error buffer (TV’s NVM) except when the NVM itself is defective.

ComPair II

RC in

Optional

Switch

Power ModeLink/

Activity

HDMI I2C only

RC out

Multi

function

ComPair II Developed by Philips Brugge

Optional power

5V DC

RS232 /UART

G_06532_036.eps

240807

Figure 5-7 ComPair II interface connection

Caution: It is compulsory to connect the TV to the PC as

shown in the picture above (with the ComPair interface in between), as the ComPair interface acts as a level shifter. If one connects the TV directly to the PC (via UART), ICs will be blown!

How to Order

ComPair II order codes:

• ComPair II interface: 3122 785 91020.

• ComPair UART interface cable: 3138 188 75051.

• Program software can be downloaded from the Philips Service website.

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

5.4.2 How to Read the Error Buffer

You can read the error buffer in 3 ways:

• On screen via the SAM/SDM/CSM (if you have a picture). Example: – ERROR: 0 0 0 0 0 : No errors detected – ERROR: 6 0 0 0 0 : Error code 6 is the last and only

detected error

– ERROR: 9 6 0 0 0 : Error code 6 was detected first and

error code 9 is the last detected (newest) error

• Via the blinking LED procedure (when you have no picture). See “The Blinking LED Procedure”.

•Via ComPair.

5.3.2 LVDS Tool

Support of the LVDS Tool has been discontinued.

EN 18 LC8.1U LA5.

Service Modes, Error Codes, and Fault Finding

5.4.3 Error Codes

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

Code Error Description Detection via: Type Remarks

0 No Error -- -- -- N/A -- -- --

1 DC Protection MT5382

2 +12V Failure WT61P7

3 Stand-by Control-

ler I2C

4 General I2C I2C0 Bus Error Log Communication Error on

5 # MT8280 I2C I2C0 Bus Error Log Communication Error with

6 System NVM I2C I2C0 Bus Protection Communication Error with

7 Tuner Tuner I2C Bus Erro r Log Commun ication Error with

8 IF/PLL Demodula-

tor

9 Ambilight FPGA I2C0 Bus Error Log Communication Error with

10 Reserved -- -- -- N/A -- -- --

11 Reserved -- -- -- N/A -- -- --

12 Reserved -- -- -- N/A -- -- --

13 HDMI Switch I2C I2C0 Bus Error Log Communication Error with

14 MT8280 DRAM1 DRAM R/W

15 Reserved -- -- -- N/A -- -- --

16 Reserved -- -- -- N/A -- -- --

17 Reserved -- -- -- N/A -- -- --

18 # Channel Decoder

I2C

19 # Pro Idiom I2C I2C0 Bus Error Log Communication Error with

21 # Bolt-On HDMI

NVM I2C

(7A01)

(7E23)

I2C0 Bus Protection Communication Error with

Tuner I2C Bus Error Log Communication Error with

(7B02/03)

I2C0 Bus Error Log Communication Error with

Protection DC_PROT = Low

Protection POWER_DOWN = Low

WT61P7

I2C0 Bus

MT8280

System NVM

Tuner TDQU

TDA9886

EC2S

Sil9185

Error Log R/W Error with DRAM1 or

DRAM2

MT5112 (reserved for BDS modules)

Pro Idiom (reserved for BDS modules)

BDS Bolt-On (reserved for BDS modules)

5.5 The Blinking LED Procedure

5.5.1 Introduction

The software is capable of identifying different kinds of errors. Because it is possible that more than one error can occur over time, an error buffer is available, which is capable of storing the last five errors that occurred. This is useful if the OSD is not working properly.

Errors can also be displayed by the blinking LED procedure. The method is to repeatedly let the front LED pulse with as many pulses as the error code number, followed by a period of

1.5 seconds in which the LED is “off”. Then this sequence is repeated.

Example (1): error code 4 will result in four times the sequence LED “on” for 0.25 seconds / LED “off” for 0.25 seconds. After this sequence, the LED will be “off” for 1.5 seconds. Any RC5 command terminates the sequence. Error code LED blinking is in red color.

Example (2): the content of the error buffer is “12 9 6 0 0” After entering SDM, the following occurs:

• 1 long blink of 5 seconds to start the sequence,

• 12 short blinks followed by a pause of 1.5 seconds,

• 9 short blinks followed by a pause of 1.5 seconds,

• 6 short blinks followed by a pause of 1.5 seconds,

• 1 long blink of 1.5 seconds to finish the sequence,

• The sequence starts again with 12 short blinks.

5.5.2 Displaying the Entire Error Buffer

Additionally, the entire error buffer is displayed when Service Mode “SDM” is entered. In case the TV set is in protection or Stand-by: The blinking LED procedure sequence (as in SDMmode in normal operation) must be triggered by the following RC sequence: “MUTE” “062500” “OK”. In order to avoid confusion with RC5 signal reception blinking, this blinking procedure is terminated when a RC5 command is received.

# If IC/board available.

5.4.4 How to Clear the Error Buffer

The error code buffer is cleared in the following cases:

• By using the CLEAR command in the SAM menu:

• If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.

Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.

Service Modes, Error Codes, and Fault Finding

EN 19LC8.1U LA 5.

5.6 Fault Finding and Repair Tips

Notes:

• It is assumed that the components are mounted correctly with correct values and no bad solder joints.

• Before any fault finding actions, check if the correct options are set.

5.6.1 Software Protections

Most of the protections and errors use either the stand-by or the micro processor as detection device. Since in these cases, checking of observers, polling of ADCs, and filtering of input values are all heavily software based, these protections are referred to as software protections. There are several types of software related protections, solving a variety of fault conditions:

• Protections related to supplies: check of the 12V.

• Protections related to breakdown of the safety check mechanism. E.g. since the protection detections are done by means of software, failing of the software will have to initiate a protection mode since safety cannot be guaranteed any more.

Remark on the Supply Errors

The detection of a supply dip or supply loss during the normal playing of the set does not lead to a protection, but to a cold reboot of the set. If the supply is still missing after the reboot, the TV will go to protection.

Protections during Start-up

During TV start-up, some voltages and IC observers are actively monitored to be able to optimize the start-up speed, and to assure good operation of all components. If these monitors do not respond in a defined way, this indicates a malfunction of the system and leads to a protection.

5.6.2 Hardware Protections

The only real hardware protection in this chassis is (in case of an audio problem) the audio protection circuit that will trigger the uP to switch “off” the TV.

Repair Tip

• It is also possible that you have an audio DC protection because of an interruption in one or both speakers (the DC voltage that is still on the circuit cannot disappear through the speakers). Caution: (dis)connecting the speaker wires during the ON state of the TV at high volume can damage the audio amplifier.

Table 5-2 NVM editor overview

Hex Dec Description

Address 0x000A 10 Existing value

Value 0x0000 0 New value

Store Store?

5.6.4 Load Default NVM Values

It is possible to download default values automatically into the NVM in case a blank NVM is placed or when the NVM first 20 address contents are “FF”. After the default values are downloaded, it is possible to start-up and to start aligning the TV set. To initiate a forced default download the following action has to be performed:

1. Switch “off” the TV set with the mains cord disconnected from the wall outlet (it does not matter if this is from “Standby” or “Off” situation).

2. Short-circuit the SDM jumpers on the SSB (keep short circuited).

3. Press “P+” or “CH+” on the local keyboard (and keep it pressed).

4. Reconnect the mains supply to the wall outlet.

5. Release the “P+” or “CH+” when the set is started up and has entered SDM.

When the downloading has completed successfully, the set should be into Stand-by, i.e. red LED on.

Alternative method:

It is also possible to upload the default values to the NVM with ComPair in case the SW is changed, the NVM is replaced with a new (empty) one, or when the NVM content is corrupted. After replacing an EEPROM (or with a defective/no EEPROM), default settings should be used to enable the set to start-up and allow the Service Default Mode and Service Alignment Mode to be accessed.

5.6.5 Display option code

Caution: In case you have replaced the SSB, always check the

display option code in SAM, even if you have picture. With a wrong display option code it is possible that you have picture, but that in certain conditions you have unwanted side-effects.

5.6.3 NVM Editor

In some cases, it can be convenient if one directly can change the NVM contents. This can be done with the “NVM Editor” in SAM mode. With this option, single bytes can be changed.

Caution:

• Do not change these, without understanding the function of each setting, because incorrect NVM settings may seriously hamper the correct functioning of the TV set!

• Always write down the existing NVM settings, before changing the settings. This will enable you to return to the original settings, if the new settings turn out to be incorrect.

EN 20 LC8.1U LA5.

5.6.6 Start-up/Shut-down Flowcharts

On the next pages you will find start-up and shut-down flowcharts, which might be helpful during fault finding.

POWER STATES

In this chassis, there are six possible power states as follows:

• Power OFF

•ON

• STANDBY

• SEMI-STANDBY

• Special Panel Mode

• PROTECTION

The following diagram gives an overview of the power states:

Service Modes, Error Codes, and Fault Finding

AC Mains OFF

Special

Panel Mode

ERROR

detected

PROTECTION

PSU = STANDBY

LED1 = OFF

LED2 = BLINK

SDM && Panel

= LOW

ERROR

detected

ERROR detected

Power

OFF

AC Mains ON

Last Status = ON

ON STANDBY

PSU = ON LED1 = ON LED2 = OFF

STANDBY Command

Figure 5-8 Power States

POWER OFF

In “Power OFF” mode, the system is completely switched “off” from AC mains. When AC power is applied, the system checks for last status. Depending on the last standby status stored in the system EEPROM, this mode can then transit to “ON” or “STANDBY” mode.

This is the normal operating mode, indicated by the “on” LED. All the power supply lines are available and depending on the sub-mode, all the circuits in the system may be active. From this mode it shall be possible to transit to “STANDBY”, “SEMISTANDBY” and “PROTECTION” mode, or to “Power OFF” mode if AC mains are switched “off”. The sub-modes are:

• Active Mode (Normal Consumer Mode)

• Service Modes

• Panel Modes

• Factory Modes

STANDBY

The total power consumption of the system in this mode shall be equal or less than 150 mW. This state is indicated by no LED when AC mains is switched “on”. Only the standby controller WT61P7 is operational in this state, where only +3V3stby power supply is available. From this mode it shall be possible to transit to the “ACTIVE” or “Power OFF” mode if AC mains are switched “off”.

AC Mains OFF

AC Mains ON

Last Status = STANDBY

WAKEUP Command

Received

SEMI-

STANDBY

(Clock

Download)

PSU = STANDBY LED1 = OFF LED2 = OFF

Manual

Clock

Auto

Clock

SEMI-STANDBY

The semi-standby state is only accessed during transition from ACTIVE to STANDBY when the auto clock feature is switched “on”. The clock information download is carried out in this state before proceeding to STANDBY.

SPECIAL PANEL MODE

The Special Panel Mode is only used during manufacturing process to program the system EEPROM. In this mode, the SDA0 and SCL0 ports of MT5382 are set to high impedance after SDM and PANEL pins are both detected as “low” during startup. This mode can be exited using a power recycle.

PROTECTION

This state is entered when an error has been detected at startup or in the “ACTIVE” mode. All switched power supply lines are turned “off” with only +3V3stby remaining “on”; similar to “STANDBY” mode. This state is indicated by the blinking red front LED with the blinking sequence denoting the type of error detected. When the system enters the protection mode due to a critical error, it should be turned “off” and the failure cause needs to be resolved. The system will function normally again after performing a power recycling once all protection causing failures have been resolved.

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Service Modes, Error Codes, and Fault Finding

START-UP SEQUENCE

There are two cases of start-up sequences, namely:

• AC On and

• Standby Wake-up

AC ON

In the case of start-up from AC mains, all PSU voltages start to turn “on” as the hardware default of the active “low” STANDBY (controlled by Standby Controller WT61P7’s STANDBY signal) signal to the PSU is pulled “low” with respect to ground. The MT5382 starts running boot loader once the hardware reset circuit is released. The system will then check the last standby status from the system EEPROM to determine whether to complete the system start-up (load image, turn on the audio, display etc) or proceed to standby and wait for wakeup command from user. The Standby Controller then proceeds to verify the power status of the +12V and sends the system to protection in case of any failures. Special Panel, SDM, and PANEL modes are detected as well.

EN 21LC8.1U LA 5.

System recovery is always handled by Standby Controller. Watchdog for MT5382 and MT8280 (if present) will be only enabled during startup, and these components are able to differentiate the normal startup and watchdog reset to trigger system reset when applicable. The alive checking mechanism kicks in after system startup is completed.

STANDBY WAKEUP

When the system receives a command to wake-up from standby, the Standby Controller sets the STANDBY signal “low” to turn “on” the switched power, and similarly detects for the presence of +12V. The MT5382 waits for +3V3_SW to be available before loading its image. The significance of this voltage detection is due to the flash is also being powered by the same mentioned voltage. The following figure shows the start-up flowchart for both “AC On” and “Standby Wake-up”:

Figure 5-9 Start-up flowchart

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EN 22 LC8.1U LA5.

Service Modes, Error Codes, and Fault Finding

STANDBY SEQUENCE

The following flowchart depicts the Standby (plus SemiStandby condition) sequence:

Set LED1 = OFF

START

Set Last Status = STANDBY

Disable RC/LKB Key

Instruct WT61P7

to turn off LED1

Stop Backlight Dimming,

PWM_DIMMING = 100%

Mute Audio, MUTEn = HIGH

Turn Off Backlight

BACKLIGHT_ON_OFF = LOW

AUTO-CLOCK

is ON?

T~200ms

Yes SEMI-STANDBY

Enable RC/LKB Key

Yes

WT61P7 STANDBYn = LOW

Wait for Next Instruction

from MT5382

Proceed to

STANDBY?

Set LED1 = ON

MT5382WT61P7

Switch off LVDS Signal

Wait for Panel_Off_Time_2 based on

Panel ID in ms (from Panel Flash)

Turn Off LVDS Power,

LCD_PWR_ON = HIGH

PWM_Dimming = 0%

Disable DC_PROT & POWER_DOWN INT

Pass Error Buffer, Clock Info and

CEC Information to WT61P7

Instruct WT61P7 to go to Standby

T~700ms

T~1200msT~1300ms

Start to Obtain Clock Info

from Selected Source

Clock Download Timeout =

3sec?

Yes

Disable RC/LKB Key

Set Last Status = ACTIVE

Instruct WT61P7

to turn on LED1

Disable RC/LKB Key

Turn On Backlight

BACKLIGHT_ON_OFF = HIGH

Display Startup Logo for 1sec

Set Back to Last Channel

Unmute Audio, MUTEn = LOW

Clock

Download

Complete?

Yes

Wakeup Event

Received?

Yes

WT61P7 blinks LED2

according to Error Buffer

Note Blocking for next startup

to ensure

PSU

properly

discharged

STANDBY due

to Protection?

Wait 3000ms

END

(STANDBY)

Figure 5-10 Standby flowchart

Enable RC/LKB Key

END

(Back to ON)

Note: Estimated running time. Actual implementation to be verified.

H_17740_035.eps

240108

Service Modes, Error Codes, and Fault Finding

POWERDOWN SEQUENCE

The following figure shows the power-down sequence flowchart:

START

EN 23LC8.1U LA 5.

POWER_DOWN INT

based on falling

edge trigger

Wait for

impending

Power Off

MT5382 Detects

POWER_DOWN INT

Reconfirm

POWER_DOWN

= LOW?

Ye s

Mute Audio Output

Write Protect Flash and

System EEPROM

System Idle

END

Note: To

Avoid False Tr ig g e ri n g

H_17740_036.eps

240108

Figure 5-11 Power-down flowchart

The power-down condition is detected by the MT5382 POWER_DOWN signal which is an interrupt pin. A “low” level on this line signifies that power-down is detected. The two major activities that occur over this operation is the muting of audio output and write protecting the system flash and EEPROM.

DC PROTECTION

The following figure shows the DC_PROT interrupt flowchart:

START

Check

DC_PROT = LOW

for 3 sec?

Ye s

DC Protection

[Protection]

Mute Audio Output

Log Error Code

Go to STANDBY

END

Note: To

Avoid False Tr ig g e ri n g

H_17740_037.ep

24010

Figure 5-12 DC Protection flowchart

EN 24 LC8.1U LA5.

Service Modes, Error Codes, and Fault Finding

5.7 Software Upgrading

5.7.1 Introduction

It is possible for the user to upgrade the main software via the USB port. This allows replacement of a software image in a stand alone set, without the need of an E-JTAG debugger. A description on how to upgrade the main software can be found in the DFU or on the Philips website.

5.7.2 Main Software Upgrade

Automatic Software Upgrade

In “normal” conditions, so when there is no major problem with the TV, the main software and the default software upgrade

LC08SSpUser software upgrade flow chart

A newer version of software is

detected.

Do you want to upgrade?

YES NO

See layout 1

An equal/older version of software is

detected.

Do you want to proceed?

Note: Should be done only if

necessary.

YES NO

See layout 2

Power off the set

Plug-in the USB

stick

Power- on the set

application can be upgraded with the “autorun.upg” (FUS part in the one-zip file). This can also be done by the consumers themselves, but they will have to get their software from the commercial Philips website or via the Software Update Assistant in the user menu (see DFU). The “autorun.upg” file must be placed in the root of your USB stick. How to upgrade:

1. Copy “autorun.upg” to the root of your USB stick.

2. Insert USB stick in the side I/O while the set is in “On” mode. The set will restart and the upgrading will start automatically. As soon as the programming is finished, you will get the message that you can remove your USB stick and restart the set.

Kindly remove the USB stick and

restart the set.

See layout 3

Software update failed!

Would you like to try again?

YES NO

See layout 4

Content browser

Photo & music

‘break-in’ and

check autorun fi le

Valid auto-r un

sw newer than

Prompt user to

See layout 1

Set re-start &

Proceed with sw

Detect USB

file?

Is USB sw

version > set

sw?

Display USB

the TV sw.

confirm

Proceed?

upgrade

Is USB sw

version =< set

sw?

Display USB

sw equal/older

than TV sw.

Prompt user to

confirm

See layout 2

Display

upgrade

progress

Content browser

Photo & music

Prompt user to

remove USB

and restart the

set

See layout 3

End

Successful?

See layout 4

Prompt user to

try again?

Retry?

Figure 5-13 SW upgrade flowchart

H_17740_038.eps

240108

Service Modes, Error Codes, and Fault Finding

Manual Software Upgrade

In case that the software upgrade application does not start automatically, you can also start it manually. How to start the software upgrade application manually:

1. Disconnect the TV from the Mains/AC Power.

2. Press the “OK” button on a Philips DVD RC-6 remote control (it is also possible to use the TV remote in “DVD” mode). Keep the “OK” button pressed while reconnecting the TV to the Mains/AC Power.

3. The software upgrade application will start.

Attention!

In case that you have started the download application manually, the “autorun.upg” will maybe not be recognized. What to do in this case:

1. Create a directory “UPGRADES” on your USB stick.

2. Rename the “autorun.upg” to something else, e.g. to “software.upg”. Do not use long or complicated names, keep it simple. Make sure that “autorun.upg” is no longer present in the root of your USB stick.

3. Copy the renamed “upg” file into this directory.

4. Insert USB stick in the side I/O.

5. The renamed “upg” file will be visible and selectable in the upgrade application.

Back-up Software Upgrade Application

If the default software upgrade application does not start (could be due to a corrupted boot 2 sector) via the above described method, you can try to activate the “back-up software upgrade application”. How to start the “back-up software upgrade application” manually:

1. Disconnect the TV from the Mains/AC Power.

2. Press the “CURSOR DOWN” button on a Philips DVD RC6 remote control (it is also possible to use the TV remote in “DVD” mode). Keep the “cursor down” button pressed while reconnecting the TV to the Mains/AC Power.

3. The software upgrade application will start.

EN 25LC8.1U LA 5.

5.7.3 Content and Usage of the One-Zip Software File

Below you find a content explanation of the One-Zip file, and instructions on how and when to use it.

• Ambi_clustername_version.zip. Not to be used by Service technicians.

• Panel_clustername_version.zip. Not to be used by Service technicians.

• EDID_clustername_version.zip. Contains the EDID content of the different EDID NVMs. See ComPair for further instructions.

• FUS_clustername_version.zip. Contains the “autorun.upg” which is needed to upgrade the TV main software and the software download application.

• ProcessNVM_clustername_version.zip. Default NVM content. Must be programmed via ComPair.

EN 26 LC8.1U LA5.

Personal Notes:

Service Modes, Error Codes, and Fault Finding

E_06532_012.eps

131004

Block Diagrams, Test Point Overview, and Waveforms

6. Block Diagrams, Test Point Overview, and Waveforms

Wiring Diagram 42” & 47” (ME8)

WIRING DIAGRAM 42”- 47” (STYLING ME8)

8K05

LVD S INPUT

41/51P

7. GND

6. 3.3V

5. I2C SEL2

4. I2C SEL1

3. S-SDA

2. GND

1. S-SCL

8. I2 C SEL2

7. 3.3V

6. GND

5. S-SDA

4. S-SCL

3. GN D

2. +24V

1. +24V

4. GND

3. +2 4V

2. GND

1. +24V

*AMBI-LIGHT UNIT (IN BACK COVER)

(1175)

CONTROL BOARD TACT SW

(0025)

1N10

1. GND

1M01

2. KEYBOARD

3. +3V3STBY

4. INTERRUPT

TO BACKLIGHT

DANGEROUS

HIGH VOLTAGE

CN2

1. HV1

2. N.C.

MAIN POWER SUPPLY

(1005)

8N10

DANGEROUS

HIGH VOLTAGE

3. HV 1

CN3

1. HV2

2. N.C.

3. HV 2

CN4

1. 24Vamb

2. GND

3. 24 Vamb

4. GND

5. 24Vamb

6. GND

CN6

1. 3V3ST

2. Standby

3. GN D

4. GND

5. GND

6. 12Vssb

7. 12Vssb

8. 12 Vssb

9. +12Vaud

10. GND_aud

11. -12Vaud

CN7

1. 12Vssb

2. 12Vssb

3. GN D

4. GND

5. INV-ON

6. DIM

7. BOOST

8. GN D

CN1

1. N

2. L

LCD DISPLAY (1004)

8K03

8101

8102

8408

INLET

8C02

8D03

27LC8.1U LA 6.

8K04

8K01

8D02

Only for 100/120Hz

1D03 (B4D) 51P

1K01 (B6K)

7. GND

6. +3V3_SW

5. +3V3_FPGA

4. GND

3. AMBI_SDA

2. GND

1. AMBI_SCL

1K04 (B6K)

4. GND_24V

3. +24V_BOLT-ON

2. GND_24V

1. +24V_BOLT-ON

1K03 (B6K)

6. GND_24V

5. +24V_BOLT-ON

4. GND_24V

3. +24V_BOLT-ON

2. GND_24V

1. +24V_BOLT-ON

1101 (B1)

11. -12VAudio

10. GNDSND

9. +12VAudio

7. +12VS

6. +12VS

5. GND

4. GND

3. GND

2. STANDBY

1. +3V3STBY

1102 (B1)

8. ANA-DIG_DIM_SELECT

7. BACKLIGHT_BOOST

6. PWM_DIMMING

5. BACKLIGHT_ON_OFF

4. GND

3. GND

2. +12Vdisp

1. +12Vdisp

1C02 (B4C)

9. KEYBOARD

8. +5V_SW

7. KEYBOARD

6. LED1

5. +3V3STBY

4. LED2

3. IR

2. GND

1. LIGHT_SENSOR

1301 (B3)

4. RIGHT+

3. GND

2. GND

1. LEFT-

8301

1D02 (B4D) 41P

SSB

(1150)

1D01 (B4D) 41P

TO BACKLIGHT

1. +24V

2. GND

3. +2 4V

4. GND

1. +24V

2. +24V

3. GN D

4. S-SCL

5. S-SDA

6. GND

7. 3.3V

8. I2C SEL2

1. S-SCL

2. GND

3. S-SDA

4. I2C SEL1

5. I2C SEL2

6. 3.3V

7. GND

*AMBI-LIGHT UNIT (IN BACK COVER)

(1175)

(5215) TWEETER (5211) WOOFER IN BACK COVER

* AMBI-LIGHT UNITS ARE OPTIONAL

+ -

RIGHT SPEAKER

1P11

1. GND

IR LED PANEL

(1112)

2. KEYBOARD

3. +3V3STBY

4. TACT_SWITCH_INT

1P10

1. LIGHT-SENSOR

2. GNDSND

3. RC

4. LED2

5. +3V3-STAN D BY

6. LED1

7. KEYBOARD

8. +5V

9. KEYBOARD

+ -

LEFT SPEAKER

(5215) TWEETER (5212) WOOFER IN BACK COVER

H_17740_056.eps

250108

Block Diagrams, Test Point Overview, and Waveforms

Block Diagram Video

VIDEO

TUNER & DEMODULATOR

1203 TDQU8-T01A

4MHZ-REFOUT

HYBRID

TUNER

IFAGC

A-IFOUT

DIFOUT1

28LC8.1U LA 6.

MT5382

7A01 MT5382

TUNER

CVBS

IF _AGC_MAIN

7200

VIP_ATV

VIN_ATV

CVBS_OUT

7201 TDA9886T/V4

AIF

1204

45MHZ75

VIF1

VIF2

SIF1

SIF2

TAG C

+5VS

SUPPLY

SIF AGC

TUNER AGC

REF

DIDITAL VCO COTROLRC VCO

VIF-PLL

SOUND TRAPS

4.5 to 6.5 Mhz

DEMODULATOR

SINGLE REFERENCE QSS MIXER

INTERCARRIER MIXER AND

AM-DEMODULATOR

VIF AGC

MAD

I2C-BUS TRANSCEIVER

SCL

(I2C)

SDA

AC26

AB24

AC24

B26

B4A

IF_AGC

B4F

CVBS0

ANALOG

VIP_ATV

VIN_ATV

ANALOG I/O

MUX

B4D

LVD S OUT

B4D

LVD S

DUAL

FLASH & NVM

GPIO0

GPIO1

D12

C12

DUAL LVDS

LVD S_TXo

LVD S_TXe

LVD S_TXe0p

LVD S_TXe0n

MJC MT8280 - LVDS

B5R

7P01 MT8280

AB14

AA14

MT8280

MOTION ESTIMATION

MOTION COMPENSATION

B4D

MT5382 - LVDS

LVD S_B_TXe

LVD S_B_TXo

QUAD LVDS

1920x1080 100/120HZ

LVD S_A_TXo

1D02

1D03

TO DISPLAY

Not used for

50/60Hz sets

MT5382 - HDMI & MUX

B4E

18 2

HDMI 2

CONNECTOR

18 2

HDMI 2

CONNECTOR

18 2

HDMI (SIDE)

CONNECTOR

18 2

HDMI 1

CONNECTOR

1E02

1E03

1E04

1E01

MT5382 - ANALOG I/O

B4F

1F01

9 10

RX2_2p

RX2_2n

RX2_1p

RX2_1n

RX2_0p

RX2_0n

RX2_Cp

RX2_Cn

RX3_2p

RX3_2n

RX3_1p

RX3_1n

RX3_0p

RX3_0n

RX3_Cp

RX3_Cn

RXSide_2p

RXSide_2n

RXSide_1p

RXSide_1n

RXSide_0p

RXSide_0n

RXSide_Cp

RXSide_Cn

AV1

AV2

AV3

SIDE

VIDEO

S SVHS

VIDEO

SVHS

1F02

1F04

1F03

1F08

1F07

AV1_Pr_in

AV1_Y_in

AV1 _Pb_in

AV2_Pr_in

AV2_Y_in

AV2 _Pb_in

AV3_CVBS_in

AV3_SY_in

AV3_SC_in

SAV_CVBS_in

SAV_ SY_in

SAV_ SC_in

RX1_2p

RX1_2n

RX1_1p

RX1_1n

RX1_0p

RX1_0n

RX1_Cp

RX1_Cn

AE23

AD21

AE22

AD20

AF19

196

AD26

AF26

AE25

AE26

AF25

AE24

AF11 AE11

AF10

AE10

AF9

AE9

AF8

AE8

PR1P

Y1P

PB1P

PR0P

Y0P

PB0P

CVBS1

SY0

SC0

CVBS3

SY1

SC1

B4E

HDMI & MUX

MT5382

MAIN PROCESSOR

VIDEO

B4B

XTALI

XTALO

DDR2 SDRAM

DDR2

205

204

RDQ(0-31)

1201 14M31

(0-12)

(0-15)

(0-12)

(16-31)

B4B

7B02 EDE2516ACSE

SDRAM

7B03 EDE2516ACSE

SDRAM

MT5382 - DDR2 SDRAM

LVD S_A_TXe

B6K

FPGA AMBI-LIGHT (CONTROL)

VDISP

TO DISPLAY

RX2_2p

RX2_2n

RX2_1p

RX2_1n

RX2_0p

RX2_0n

RX2_Cp

RX2_Cn RX3_2p

RX3_2n

RX3_1p

RX3_1n

RX3_0p

RX3_0n

RX3_Cp

RX3_Cn

7E18 SII9185ACTU

R0X

18 48

R1X

HDMI

SWITCH

R2X

RXSide_2p

RXSide_2n

RXSide_1p

RXSide_1n

RXSide_0p

RXSide_0n

RXSide_Cp

RXSide_Cn

1 2

HDMI_RESET

B4C

RXMux_2p RXMux_2n

RXMux_1p

RXMux_1n RXMux_0p

RXMux_0n

RXMux_Cp

RXMux_Cn

AF15

AE15

AF14

AE14

AF13

AE13

AF12

AE12

H_17740_057.eps

250108

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