Philips LC7.1HE LA Schematic

Colour Television Chassis

ME7

LC7.1HE

ME7

H_16940_000.eps

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Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis Overview 2

2. Safety Instructions, Warnings, and Notes 7

3. Directions for Use 8

4. Mechanical Instructions 9

5. Service Modes, Error Codes, and Fault Finding 20

6. Block Diagrams, Test Point Overviews, and

Waveforms

Wiring Diagram 26” - 32” LCD (ME7) 31 Wiring Diagram 32” LCD (ME7) 32 Wiring Diagram 42” LCD (ME7) 33 Block Diagram Video 34 Block Diagram Audio 35 Block Diagram Control & Clock Signals 36 Test Point Overview SSB (Bottom Side) 37 I2C Overview 38 Supply Lines Overview 39

7. Circuit Diagrams and PWB Layouts Diagram PWB SSB: DC / DC (B02) 40 56-65 SSB: Tuner IF & Demodulator (B03A) 41 56-65 SSB: DVB-Demodulator (B03B) 42 56-65 SSB: DVB-T: DVB Common Interface (B03C) 43 56-65 SSB: DVB MOJO (B03D) 44 56-65 SSB: DVB MOJO Memory (B03E) 45 56-65 SSB: DVB MOJO Analog Back End (B03F) 46 56-65 SSB: Micro Processor (B04A) 47 56-65 SSB: Video Processor (B04B) 48 56-65 SSB: DDR & CPU Interface (B04C) 49 56-65 SSB: YPBPR & Rear I/O (B06A) 50 56-65 SSB: I/O SCART 1 & 2 (B06B) 51 56-65 SSB: HDMI (B06C) 52 56-65 SSB: Headph. Ampl. & Muting (B06D) 53 56-65 SSB: Audio (B07) 54 56-65 SSB: SRP List 55 56-65

Copyright 2007 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.

DC/DC Converter Panel (DC01) 66 67 Keyboard Control Panel (E) 68 69 Front IR / LED Panel (J) 70 71 i-Board (HC01) 72 74-75 i-Board (HC02) 73 74-75 System Interface Panel (SI) 76 77

8. Alignments 79

9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 84 Abbreviation List 85

10. Spare Parts List 87

11. Revision List 91

Published by JH 0770 BU CD Customer Service Printed in the Netherlands Subject to modification EN 3122 785 17151

EN 2 LC7.1HE 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 : 26" (66 cm), 16:9

: 32" (82 cm), 16:9

: 42" (107 cm), 16:9 Resolution (H × V pixels) : 1366 × 768 Dyn. contrast ratio : 800:1 (26")

Min. light output (cd/m Typ. response time (ms) : 8 (26", 32")

Viewing angle (H × V degrees) : 160 × 150 (26")

Tuning system : PLL TV Colour systems : PAL B/G, D/K, I

Video playback : NTSC

Supported computer formats : 640 × 480

Supported video formats : 640 × 480i - 1fH

Presets/channels : 125 presets Tuner bands : VHF

) : 500

: 1500:1 (32")

: 1000:1 (42")

: 5 (42")

: 178 × 178 (> 26")

: SECAM B/G, D/K, L/L’

: PAL

: SECAM

: 800 × 600

: 1024 × 768

: 640 × 480p - 2fH

: 720 × 576i - 1fH

: 720 × 576p - 2fH

: 1280 × 720p - 3fH

: 1920 × 1080i - 2fH

: UHF

: S-band

: Hyper-band

1.1.3 Miscellaneous

Integrated clock display with wake up and message alarm (optional).

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) : ≈ 120 (26")

- Active stand-by (W) : 18 (26")

- Passive stand-by (W) : 2

Dimensions (W × H × D cm) : 69.1 × 47.4 × 11.1

Weight (kg) : 11.0 (26")

) : 100 - 240

: ≈ 140 (32") : ≈ 240 (42")

: 19 (32") : 20 (42")

(26")

: 81.6 × 55.2 × 11.6

(32")

: 105.8 × 69.2 × 11.6

(42")

: 17.8 (32") : 26.0 (42")

1.1.2 Sound

Sound systems : NICAM D/K, I, L/L’

: 2CS D/K, B/G Equalizer : 7-bands Maximum power (W

):2 × 10

RMS

Technical Specifications, Connections, and Chassis Overview

1.2 Connection Overview

RJ12

Special tool needed

(order via BDS)

RJ45

EN 3LC7.1HE 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, and Ye= Yellow.

1.2.1 Rear Connections (top)

RJ12 DATA1 (HM-Link - In/Out)

1 -LED_in < 0.3 V, active low j 2 -IR_in < 0.3 V, active low j 3 - MODE Vcc j 4 - TV Power Status 4.5 to 5 V: TV “On”

< 0.3 V: TV “Stdby”

High impedance: TV “Off” k 5 - Gnd Gnd H 6 - IR_out Signal k

RJ45 DATA2 (Xpress Box - In/Out)

1-+12 V +12V/1W k 2 - Gnd Gnd H 3 - H-sync Signal k 4 - V-sync Signal k 5 - TXD232 Signal 6 - RXD232 Signal 7 - SDA3_IR-OUT Signal k 8 - DCM-POR Signal k 9 - CVBSterr Signal k 10 - Gnd CVBSterr Gnd H

Mini Jack: Speaker - Out

- Loudspeaker 8 ohm ok

Figure 1-1 Rear I/O connections

VGA: Video RGB - In

1 - Video Red 0.7 V 2 - Video Green 0.7 V 3 - Video Blue 0.7 V 4-n.c. 5 - Ground Gnd H 6 - Ground Red Gnd H 7 - Ground Green Gnd H 8 - Ground Blue Gnd H 9-+5V 10 - Ground Sync Gnd H 11 - n.c. 12 - DDC_SDA DDC data j 13 - H-sync 0 - 5 V j 14 - V-sync 0 - 5 V j 15 - DDC_SCL DDC clock j

Smart-card Interface: Data Video - In/Out (optional)

CVI

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Figure 1-2 VGA Connector

/ 75 ohm j

+5 V j

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Figure 1-3 Smart-card Connector

1 - 3V3 +3.3 V k 2 - Ground power Gnd H 3 - 12V +12 V j 4 - Ground I

C Gnd H

5 - IR data Data j

EN 4 LC7.1HE LA1.

Technical Specifications, Connections, and Chassis Overview

6 - POR Signal j 7 - TV Clock Clock Signal k 8 - Data in Data j 9 - Data out Data k 10 - +5V +5 V j 11 - H-sync Signal j 12 - V-sync Signal j 13 - Gnd CVBS in Gnd H 14 - SCL DDC clock j 15 - SDA DDC data j 16 - Reserve 17 - B in Blue in Signal j 18 - G in Green in Signal j 19 - R in Red in Signal j 20 - FBL in Signal j 21 - Gnd CVBS out Gnd H 22 - CVBS out 1 V 23 - Pr_OUT 1 V 24 - Pb_OUT 1 V 25 - Y_OUT 1 V

/ 75 ohm j

/ 75 ohm k

26 - Gnd Audio in Gnd H 27 - Audio R 0.5 V 28 - Audio L 0.5 V 29 - Audio R 0.5 V 30 - Audio L/Mono in 0.5 V 31 - Video CVBS/Yin 1 V 32 - C in 0.7 V

/ 1 kohm k

RMS

/ 1 kohm k

RMS

/ 10 kohm j

RMS

/ 10 kohm j

RMS

/ 75 ohm j

1.2.2 Rear Connections

Headphone - Out

Bk - Headphone 32 - 600 ohm / 10 mW rt

EXT1: Video RGB - In, CVBS - In/Out, Audio - In/Out

EXT2: Video YC - In, CVBS - In/Out, Audio - In/Out

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Figure 1-5 SCART connector

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

/ 1 kohm k

RMS

/ 10 kohm j

RMS

/ 1 kohm k

RMS

4 - Ground Audio Gnd H 5-n.c. 6 - Audio L 0.5 V 7 - C-out 0.7 V 8 - Function Select 0 - 2 V: INT

/ 10 kohm j

RMS

/ 75 ohm k

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3 j

9-n.c. 10 - Easylink P50 0 - 5 V / 4.7 kohm jk 11 - n.c. 12 - n.c. 13 - n.c. 14 - Ground P50 Gnd H 15 - C 0.7 V 16 - Status/FBL 0 - 0.4 V: INT

/ 75 ohm j

1 - 3 V: EXT / 75 ohm j 17 - Ground Video Gnd H 18 - Ground FBL Gnd H 19 - Video CVBS 1 V 20 - Video CVBS/Y 1 V 21 - Shield Gnd H

/ 75 ohm k

/ 75 ohm j

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Figure 1-4 SCART connector

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

/ 1 kohm k

RMS

/ 10 kohm j

RMS

/ 1 kohm k

RMS

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

/ 10 kohm j

RMS

/ 75 ohm j

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3 j 9 - Ground Green Gnd H 10 - Easylink P50 0 - 5 V / 4.7 kohm jk 11 - Video Green 0.7 V

/ 75 ohm j

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

/ 75 ohm j

1 - 3 V: EXT / 75 ohm j 17 - Ground Video Gnd H 18 - Ground FBL Gnd H 19 - Video CVBS 1 V 20 - Video CVBS 1 V 21 - Shield Gnd H

/ 75 ohm k

/ 75 ohm j

Aerial - In

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

Service Connector (ComPair)

1 - SDA-S I 2-SCL-S I

C Data (0 - 5 V) jk

C Clock (0 - 5 V) j

3 - Ground Gnd H

EXT3: Cinch: Video CVBS - In, Audio - In

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

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

/ 75 ohm jq

EXT3: 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

HDMI 1 & 2: Digital Video, Digital Audio - In

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Figure 1-6 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

Technical Specifications, Connections, and Chassis Overview

EN 5LC7.1HE LA 1.

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

1.3 Chassis Overview

POWER SUPPLY UNIT

20 - Ground Gnd H

EXT4: 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

i-BOARD

SMALL SIGNAL

BOARD

CLOCK (optional)

POWER SUPPLY UNIT

SMALL SIGNAL

BOARD

CLOCK (optional)

Figure 1-7 PWB/CBA locations (26" model)

CONTROL BOARD

LED PANEL

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i-BOARD

INTERFACE PANEL

CONTROL BOARD

LED PANEL

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Figure 1-8 PWB/CBA locations (32" models)

EN 6 LC7.1HE LA1.

Technical Specifications, Connections, and Chassis Overview

POWER SUPPLY UNIT

SMALL SIGNAL

BOARD

Figure 1-9 PWB/CBA locations (42" models)

i-BOARD

INTERFACE PANEL

CONTROL PANEL

LED PANEL

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Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

EN 7LC7.1HE 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.

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.

• 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.

-9

), or pico-farads (p= ×10

-12

-6

2.2 Warnings

• All ICs and many other semiconductors are susceptible to

electrostatic discharges (ESD w). Careless handling during repair can reduce life drastically. Make sure that, during repair, you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this same potential. Available ESD protection equipment: – Complete kit ESD3 (small tablemat, wristband,

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

– Wristband tester 4822 344 13999.

• Be careful during measurements in the high voltage section.

• Never replace modules or other components while the unit is switched “on”.

• When you align the set, use plastic rather than metal tools. This will prevent any short circuits and the danger of a circuit becoming unstable.

2.3 Notes

2.3.1 General

• Measure the voltages and waveforms with regard to the chassis (= tuner) ground (H), or hot ground (I), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the

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.

EN 8 LC7.1HE LA3.

Directions for Use

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.

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 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.

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

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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

4. Mechanical Instructions

Mechanical Instructions

EN 9LC7.1HE LA 4.

Index of this chapter:

4.1 Cable Dressing

4.2 Service Positions

4.3 Assy/Panel Removal

4.4 Set Re-assembly

4.1 Cable Dressing

Notes:

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

• Follow the disassemble instructions in described order. They apply to the 32" model, but the described method is comparable for the other screen sizes.

Figure 4-1 Cable dressing (26" model)

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Mechanical Instructions

Figure 4-2 Cable dressing (32" model)

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Figure 4-3 Cable dressing (42" model)

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Mechanical Instructions

4.2 Service Positions

For easy servicing of this set, there are a few possibilities created:

• The buffers from the packaging.

• Foam bars (created for Service).

• Aluminium service stands (created for Service).

Note: the aluminium service stands can only be used when the set is equipped with so-called “mushrooms”. Otherwise use the original stand that comes with the set.

4.2.1 Foam Bars

Required for sets

42"

4.3 Assy/Panel Removal

4.3.1 Rear Cover

Warning: Disconnect the mains power cord before you remove

the rear cover.

1. Place the TV set upside down on a table top, using the foam bars (see part “Service Position”).

2. Remove rear cover screws and the stand (if mounted).

3. Remove rear cover.

4.3.2 Keyboard Control Panel

1. Refer to next figure (taken from the 32" model, but the method is comparable for the other screen sizes).

2. Remove the all screws.

3. Unplug connector.

4. Remove the unit. Note: as the unit is “secured” by bosses located on the front cabinet, it can be difficult to remove the unit. Therefore, it is advised to use a long thin screwdriver, insert it vertically between the control knobs and the front cabinet, and use it as a lever (see arrows) while pulling the unit from the cabinet. You will here some “clicks” during removal.

5. Release clips and remove the board.

When defective, replace the whole unit.

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Figure 4-4 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 Aluminium Stands

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Figure 4-6 Keyboard control panel

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Figure 4-5 Aluminium stands

The MkII aluminium stands with order code 3122 785 90690, can also be used to do measurements, alignments, and duration tests. The stands can be (dis)mounted quick and easy by means of sliding them in/out the “mushrooms”. The stands are backwards compatible with the earlier models. Important: For (older) FTV sets without these “mushrooms”, it is obligatory to use the provided screws, otherwise it is possible to damage the monitor inside!

4.3.3 IR/LED Panel

1. Remove the rear cover, as described earlier.

2. Refer to fig. “IR/LED panel” below.

3. Unplug connector(s) [1].

4. Release clip [2] and remove the board.

When defective, replace the whole unit.

Mechanical Instructions

EN 13LC7.1HE LA 4.

4.3.5 Small Signal Board (SSB)

1. Remove the rear cover, as described earlier.

2. Refer to fig. “SSB removal” below.

3. Disconnect all cables [a] on the SSB.

4. Remove the screws [b] that hold the SSB.

5. Remove the screws that hold the CINCH and HDMI connectors at the connector panel.

6. Lift the SSB from the set.

Figure 4-7 IR/LED panel

4.3.4 Speakers

This depends on the model/screen size: for the 26" and 32" models, the bare speakers are accessible, while for the 42" models they are encased, and therefore must be replaced as assembly when defective.

Full- or Mid-range Speakers (for 26" and 32" models)

1. Refer to next figure.

2. Unplug connectors [1].

3. Remove screws [2].

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b (3×)

Figure 4-10 SSB removal

4.3.6 i-Board

1. Remove the rear cover, as described earlier.

2. Refer to fig. “i-Board removal” below.

3. Disconnect all cables [1] on the i-Board.

4. Remove the screws [2] that hold the i-Board.

5. Lift the i-Board from the set.

b (2×)

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2 1 2

Figure 4-8 Mid-range speakers

Tweeters (only for 32" models)

1. Refer to next figure.

2. Unplug connectors [1].

3. Remove screws [2].

2 1

Figure 4-9 Tweeters

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Figure 4-11 i-Board removal

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Mechanical Instructions

4.3.7 DC-DC converter for i-Board (26" optional)

1. Remove the rear cover, as described earlier.

2. Refer to fig. “DC-DC converter for i-Board removal” below.

3. Disconnect the cable [1] on the DC-DC converter for i-Board.

4. Remove the screw [2] that hold the panel.

5. Lift the i-Board from the set.

Figure 4-12 DC-DC converter for i-Board removal

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4.3.9 Main Supply Panel

1. Refer to next figures.

2. Unplug cables [a].

3. Remove the fixation screws [b].

4. Take the board out (it hinges at the left side).

b (3×)

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4.3.8 Smart Card Interface (optional)

1. Remove the rear cover, as described earlier.

2. Refer to fig. “Smart Card Interface removal” below.

3. Disconnect all cables [1] on the Smart Card Interface.

4. Remove the screws [2] that hold the Smart Card Interface.

5. Lift the Smart Card Interface from the set.

Figure 4-14 Main supply panel 26" and 32".

b (10×)

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Figure 4-15 Main supply panel 42".

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Figure 4-13 Smart Card Interface removal

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4.3.10 Clock Board (optional)

1. Remove the rear cover, as described earlier.

2. Optionally remove the Main Supply panel, as described earlier.

3. Optionally remove the Small Signal Board, as described earlier.

4. Optionally remove the DC-DC converter for i-Board, as described earlier.

5. Refer to fig. “Clock Board removal” below.

6. Disconnect the cable [1] on the Clock Board.

7. Now remove the sub-frame from the cabinet.

8. Remove the screws [2] that hold the Clock Board.

9. Lift the Clock Board from the set.

Mechanical Instructions

EN 15LC7.1HE LA 4.

Figure 4-16 Clock Board removal

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EN 16 LC7.1HE LA4.

Mechanical Instructions

4.3.11 LCD Panel 26" models

1. Remove the rear cover, as described earlier.

2. Refer to figures “LCD panel (26" models)” below.

3. Unplug the connectors from the SSB [a].

4. Unplug the connectors from the Main Supply Panel [b] and optional Smart Card Interface.

5. Unplug the connectors from the LED & IR board [c].

6. Unplug the outer connectors [d] from the loudspeakers.

7. Do NOT forget to unplug the LVDS connector [e] from the SSB. Important: Be careful, as this is a very fragile connector!

8. Remove the SSB, the Main Supply Panel and Smart Card Interface as described earlier.

9. Remove screws [1] that hold the central sub-frame.

10. Remove LCD panel fixation screws [2].

11. Lift the complete central sub-frame from the set (incl. the i-Board and wiring).

12. Remove LCD panel fixation screws [3].

13. Lift the LCD panel from the front cabinet.

d d

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Figure 4-17 LCD panel (26" models) [1/2]

Figure 4-18 LCD panel (26" models) [2/2]

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Mechanical Instructions

EN 17LC7.1HE LA 4.

4.3.12 LCD Panel 32" models

1. Remove the rear cover, as described earlier.

2. Refer to figures “LCD panel (32" models)” below.

3. Unplug the connectors from the SSB [a].

4. Unplug the outer connectors [b] from the loudspeakers.

5. Unplug the connector from the LED & IR board [c].

6. Do NOT forget to unplug the LVDS connector [d] from the SSB. Important: Be careful, as this is a very fragile connector!

7. Remove screws [1] that hold the mid-range speakers and remove those.

8. Remove screws [2] that hold the central sub-frame.

9. Remove LCD panel fixation screws [3].

10. Lift the complete central sub-frame from the set (incl. the i-Board and wiring).

11. Lift the LCD panel from the front cabinet.

Figure 4-19 LCD panel (32" models)

1 1

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EN 18 LC7.1HE LA4.

Mechanical Instructions

4.3.13 LCD Panel 42" model

1. Remove the rear cover, as described earlier.

2. Refer to figures “LCD panel (42" model)” below.

3. Unplug the connector from the LED & IR board [a].

4. Unplug the connectors from the SSB [b].

5. Unplug the connectors from the Speakers [c].

6. Do NOT forget to unplug the LVDS connector [d] from the SSB. Important: Be careful, as this is a very fragile connector!

7. Remove screws [1] that hold the support bars and remove those.

8. Remove screws [2] from the speaker frames and remove those.

9. Remove central sub-frame fixation screws [3].

10. Remove LCD panel fixation screws [4].

11. Lift the complete central sub-frame from the set (incl. the i-Board and wiring).

12. Lift the LCD panel from the front cabinet.

G_17150_114.eps

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Figure 4-20 LCD panel (42" model) [1/2]

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Figure 4-21 LCD panel (42" model) [2/2]

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. Ensure that EMC foams are mounted correctly (one is located above the LVDS connector on the display, between the LCD display and the metal sub-frame).

Mechanical Instructions

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Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1 Test Points

5.3 Service Modes

5.4 Service Tools

5.5 Error Codes

5.6 The Blinking LED Procedure

5.8 Fault Finding and Repair Tips

5.1 Test Points

In the chassis schematics and layout overviews, the test points (Fxxx) are mentioned. In the schematics, test points are indicated with a rectangular box around “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: Colour bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 TV mode Switching

The iTV set can be switched between “iTV” and “normal TV” mode (or vice versa) with the iTV setup remote RC2573/01. To do this; press 024995 <M> (M=menu). Follow the message shown on the screen.

5.3 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 was 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, submenus).

The CSM is a Service Mode that can be enabled by the consumer. Instructions on how to enable the CSM can be given by telephone by either the dealer or the P3C (Philips Customer Care Centre). The CSM displays diagnosis information, which the customer can forward to the dealer/P3C. In CSM mode, “CSM”, is displayed in the top right corner of the screen.

The information provided in, 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).

5.3.1 General

General items are listed below.

Life Timer

During the life time cycle of the TV set, a life timer is kept. This life timer counts the normal operation hours, but not the Standby hours. The actual value of the life timer is displayed in SDM and CSM in a decimal value. Every two soft-resets should increase the hour by +1. Minimal five digits are displayed.

Software Identification, Version, and Cluster

The software identification, 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: LC71 for analogue range.

• B is the region indication: E= Europe.

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

• D is the language/features indication: 1= standard, H= 1080p full HD.

• X is the main version number: The main version number is updated with a major change of specification (incompatible with the previous software version). Numbering will go from 1 - 9 then from 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: The sub version number 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 and display code overview” (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

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Service Modes, Error Codes, and Fault Finding

s 7

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.

5.3.2 Service Default Mode (SDM)

Purpose

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

• Create a predefined setting for measurements to be made.

• Override software protections.

• Start the blinking LED procedure.

• Read the error buffer.

• Check the life timer.

SDMSDM

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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 favourite”, “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.

Figure 5-2 Service jumper (SSB component side)

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.

HHHHH A A A A B C D- X . Y Y ERR XX XX XX XX XX O P X X X X X X X X X X X X X X X X X X

SDM

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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.

• SDM: The character “SDM” to indicate that the TV set is in Service mode.

• ERR: 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. Seven codes 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, colour, 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” (“STATUS” 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/i+ button to switch to SAM (do not allow the display to time out between entries while keying the sequence).

EN 22 LC7.1HE LA5.

Service Modes, Error Codes, and Fault Finding

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.

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.

5.3.3 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 (Tuner, White Tone, and Audio).

• NVM Editor.

• ComPair Mode switching.

• Set the screen mode to full screen (all contents on screen are viewable).

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.

LLLL L A AAABCD- X. YY ERR XX XX XX XX XX O P X X X X X X X X X X X X X X X X X X

C l e a r > Y e s O p t i o n s > T u n e r > R G B A l i g n > N V M E d i t o r > C o m p a i r > S W E V E N T S >

Figure 5-4 SAM menu

Menu explanation:

1. LLLLL. This represents the run timer. The run timer counts normal operation hours, but does not count Stand-by hours.

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

3. SAM. Indication of the Service Alignment Mode.

4. ERR (ERRor buffer). Shows all errors detected since the last time the buffer was erased. Five errors possible.

SAM

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5. OP (Option Bytes). Used to read-out the option bytes. See “Options” in the Alignments section for a detailed description. Seven codes are possible.

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

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

8. Tuner. Used to align the tuner. See “Tuner” in the “Alignments” chapter for a detailed description.

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

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

11. ComPaIr. Can be used to switch the television to “In Application Programming” mode (IAP), for software uploading via ComPair. Read paragraph “Service Tools” > “ComPair”. Caution: When this mode is selected without ComPair connected, the TV will be blocked. Remove the AC power to reset the TV.

12. SW Events. Only to be used by development to monitor SW behaviour during stress test.

How to Navigate

• In the SAM menu, select menu items with the MENU 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 MENU UP/DOWN keys to display the next / previous menu items.

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

• 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.

• Command “OSD/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 settings), leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set.

How to Exit

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

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.

Service Modes, Error Codes, and Fault Finding

EN 23LC7.1HE LA 5.

5.3.4 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 are viewable).

• 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 the 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:

(*) If an NVM IC is replaced or initialised, this data must be rewritten 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, or POWER button on the remote control transmitter.

• Press the POWER button on the television set.

1 M O D E L : 3 2 P F L 5 5 2 2 D / 1 2 P R O D S / N : AG1A0712123456 3 S W I D : L C 7 1 E L 1 - 1 . x x 4 O P : X X X X X X X X X X X X X X X X X X X X X 5 C O D E S : X X XX XX XX XX 6 S S B : 3 1 39 127 1 2341 7 N V M : X X X X X X X X 8 F l a s h D a t a : X X . X X . X X . X X 9 L I F E T I M E R : L L L L L 1 0 T U N E R : W E A K / G O O D / S T R O N G 1 1 S Y S T E M : P A L / N T S C / S E C A M 1 2 S O U N D : M O N O / S T E R E O / N I C A M 1 3 H D A U : Y E S / N O 1 4 F O R M A T : X X X X X X X X

CS M

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Figure 5-5 CSM menu

Menu Explanation

1. MODEL. Type number, e.g. 32PFL5522D/10. (*)

2. PROD S/N. Product serial no., e.g. AG1A0712123456. (*)

3. SW ID. Software cluster and version is displayed.

4. OP. Option code information.

5. CODES. Error buffer contents.

6. SSB. Indication of the SSB factory identification code (12nc). (*)

7. NVM. The NVM software version no.

8. Flash Data. PQ (picture quality) and AQ (audio quality) data version. This is a sub set of the main SW.

9. LIFE TIMER. Operating hours indication.

10. TUNER. Indicates the tuner signal condition: “Weak” when signal falls below threshold value, “Medium” when signal is at mid-range, and “Strong” when signal falls above threshold value.

11. SYSTEM. Gives information about the video system of the selected transmitter (PAL/SECAM/NTSC).

12. SOUND. Gives information about the audio system of the selected transmitter (MONO/STEREO/NICAM).

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

14. FORMAT. Gives information about the video format of the selected transmitter (480i/480p/720p/1080i).

15. HD SW ID. Software version of the 1080p full HD module (when present).

16. Reserved.

17. Reserved.

18. Reserved.

EN 24 LC7.1HE LA5.

Service Modes, Error Codes, and Fault Finding

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 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

I2C SERVICE

CONNECTOR

ComPair II Developed by Philips Brugge

Optional power

5V DC

RS232 /UART

G_06532_036.eps

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UART SERVICE

CONNECTOR

ComPair II

RC in

Optional

Switch

Power ModeLink/

Activity

HDMI I

C only

RC out

Multi

function

Figure 5-6 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.

• ComPair32 CD (update): 3122 785 60160.

• ComPair interface cable: 3122 785 90004.

• ComPair interface extension cable: 3139 131 03791.

• ComPair UART interface cable: 3122 785 90630.

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

5.5 Error Codes

5.5.1 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.

5.5.2 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.

5.5.3 Error Codes

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

5.4.2 LVDS Tool

Support of the LVDS Tool has been discontinued.

Service Modes, Error Codes, and Fault Finding

EN 25LC7.1HE LA 5.

Table 5-2 Error code overview

Error

Description Item

code

0 No error.

1 DC Protection of speakers.

2 +12V protection error. 12V missing or “low”.

3 Reserved.

4 General I2C error. note 2

5 Trident Video Processor

communication error.

6 I2C error while communicating

with the NVM.

7 I2C error while communicating

with the Tuner.

8 I2C error while communicating

with the IF Demodulator.

9 I2C error communicating with

the Sound Processor.

10 SDRAM defective. 7204

11 I2C error while communicating

with the HDMI IC.

12 I2C error while communicating

with the MOJO PNX8314.

13 DVB HW communication error. 7F01,

14 SDRAM defective. 7205

15 Reserved.

16 Reserved.

17 Reserved.

18 I2C error while communicating

with the i-Board processor.

19 I2C error while communication

with 1080p bolt-on module.

Remarks

no.

7202 When Trident IC is defective,

error 10 and 14 might also be reported. Trident communicates via parallel bus, not via the I2C bus. The I2C bus of Trident is only used in ComPair mode.

7315 The TV will not start-up due to

critical data not available from the NVM, but the LED will blink the error code.

1101

7113

7411

7817

7G00 if applicable

if applicable 7K00, 7G00

if applicable

Notes

1. Some of the error codes reported are depending on the option code configurations.

2. This error means: no I2C device is responding to the particular I2C bus. Possible causes: SCL/SDA shorted to GND, SCL shorted to SDA, or SCL/SDA open (at uP pin). The internal bus of the Trident platform should not cause the entire system to halt as such an error can be reported.

5.5.4 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: – To enter SAM, press the following key sequence on the

remote control transmitter: “062596” directly followed by the OSD/i+ button (do not allow the display to time out between entries while keying the sequence).

– Make sure the menu item CLEAR is selected. Use the

MENU UP/DOWN buttons, if necessary.

– Press the MENU RIGHT button to clear the error

buffer. The text on the right side of the “CLEAR” line will change from “CLEAR?” to “CLEARED”

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

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

5.6 The Blinking LED Procedure

5.6.1 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 colour.

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.

5.6.2 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.

To erase the error buffer, the RC command “MUTE” “062599

“OK” can be used.

5.7 TV Main Software Upgrade

For instructions on how to upgrade the TV Main software, refer to ComPair.

5.8 Fault Finding and Repair Tips

Notes:

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

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

5.8.1 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 the NVM settings 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 26 LC7.1HE LA5.

Table 5-3 NVM editor overview

Hex Dec Description

.ADR 0x000A 10 Existing value

.VAL 0x0000 0 New value

.Store Store?

5.8.2 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 “on” or blue LED is blinking.

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

Service Modes, Error Codes, and Fault Finding

Alternative method (1):

1. Go to SAM.

2. Select NVM Editor.

3. Select ADR (address) to 1 (dec).

4. Change the VAL (value) to 170 (dec).

5. Store the value.

6. Do a hard reset to make sure new default values took place.

Alternative method (2):

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.

5.8.3 Start-up/Shut-down Flowcharts

Important note for DVB sets:

• When you put a DVB set into Stand-by mode with an RC, the set will go to “Semi Stand-by” mode for 5 minutes. This, to facilitate “Off the Air download” (OAD). If there is no activity within these 5 minutes, the set will switch to Standby mode. In “Semi Stand-by” mode, the LCD backlight and Audio Amplifier are turned “off” but other circuits still work as normal. The customer might think the set is in Stand-by. However, in real Stand-by mode, only the uP and the NVM are alive and all other circuits are switched “off”.

• If you press the mains switch at the local key board in a DVB set, the set will switch to Stand-by mode.

On the next pages you will find start-up and shut-down flowcharts, which might be helpful during fault finding. It should be noted, that some events are only related to PDP sets, and therefore not applicable to this LCD chassis.

Start Up

Service Modes, Error Codes, and Fault Finding

AC ON

+5VSTBY & +3V3STBY Available (1)

RENEAS POR by +3VSTBY (2)

STANDBYn = LOW

InitCold Component:

1. Check SDM port.

- If SDM pin = LOW and NVM first 20Byte = 0xFF, reload Software default NVM value.

2. Check Panel port.

- If Panel Pin = LOW and check slave address 0x65 = 0xA5, Enter Panel Mode.

Last status is ON?

Yes

Read NVM completed.

STOP I²C activities.

LED = BLUE for Normal mode

LED = RED for Recording mode

BLOCK RC Key

M16C RST_H = HIGH

RST_HDMI = LOW

RST_AUD = LOW RESET_n = LOW

LCD_PWR_ON = LOW

SDI PDP => CTRL_DISP1 = LOW

Error 6 - NVM

[Protection]

Standby Normal Mode

(RED LED)

Port Assignment in STANDBY

Wait for RC key or

Wake up event

160ms

(1) +5VSTBY to be measured at PDTC114ET (item 7322)

(2) to be measured at pin 4 of BD45275G (item 7312)

User wake up the sets

in DVB recording mode

LCD_PWR_ON = HIGH

(Same function as CTRL-DISP2)

SDI PDP => CTRL_DISP1 = LOW

20ms

1000ms to

1500ms

Wait for 20 ms

Switch ON LVDS Signal

Init. Warm Component

(For software)

EN 27LC7.1HE LA 5.

Error 2

[Protection]

Notes:

---------

1. LC07 TV software only start communication with IBOZ once receive the INT message from IBOZ.

For DVB Sets only (Semistandby) Recording mode

SDI PDP => CTRL_DISP1 = HIGH

Recording Mode finished

Software Shutdown:

WP for NVM

Port Assignment in STANDBY

Wait for 100ms

Time out = 2000ms

Yes

500ms

100ms

Error 7

Error 8

Error 9

Error 11

1700ms

Error 3

[Protection]

STANDBYn = HIGH

(Same function as CTRL-DISP3)

Wait for 500ms

Is Power Down =

BL_ADJ = HIGH (100% Duty Cycle)

HIGH?

Yes

Wait for 100ms

M16C RST_H to LOW

RST_HDMI = HIGH

RST_AUD = HIGH RESET_n = HIGH

Enable Power Down INT

Enable DC_PROT INT

Initialise Tuner

Initialise IF Demodulator, Afric

TDA9886T

Initialise Micronas

Mute Audio

Initialise HDMI, Sil9023

Initialise Trident CX

DPTVInit( )

Initialise FHP Panel

* For FHP PDP Sets only

Initialise Bolt-ON

* For iTV, 1080P, Ambi Light

For LCD:

BL_ON_OFF = HIGH

* BL_ADJ keep 100% for 3000ms

before dimming.

Blank Picture

Picture Mode Setup & Detection

unBlank Picture &

UnMute Audio

Error 5 - Trident

[Protection]

Error 10 – SDRAM 7204

[Protection]

Error 14 – SDRAM 7205

[Protection]

Error 17 – AmbiLight

Error 18 – iTV iFace

End

For PDP:

3000ms delay

STANDBYn = LOW

Standby

Normal Mode

Enable RC Key

DVB recording mode

Figure 5-7 Start-up flowchart

Error 19 – 1080P

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EN 28 LC7.1HE LA5.

Service Modes, Error Codes, and Fault Finding

SEMISTANDBY/ STANDBY

300ms

20ms

Start

Mute Audio

BL_ADJ stop dimming

(PWM duty cycle 100%)

BL_ON_OFF = LOW

Wait 300ms

Switch OFF LVDS

Wait 20ms

LCD_PWR_ON = LOW

LED = RED No

For DVB Sets only (Semistandby)

Wait for 3000ms

Except power tact switch

SDI PDP => CTRL_DISP1 = HIGH

Off Air Downloading/ Recording Mode

IBOZ send shut down command

Software Shutdown:

Standby using

“power key”

Yes

LED = NO LED

for Standby soft mode

Disable Power Down INT &

DC_PROT_INT

BL_ADJ = LOW

(PWM duty cycle 0%)

WriteProtect for NVM

Port Assignment in STANDBY

Sets go to standby here

40ms

Total = 360ms

STANDBYn = LOW

Wait for 3000ms

End

Figure 5-8 Semi Stand-by/Stand-by flowchart

Blocking for the next start up to ensure power supply discard properly.

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