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Colour Television

Chassis

LC4.9E
AB For manual LGE plasma panels see: 3122 785 15590 For manual FHP plasma panels see: 3122 785 14580 For manual SDI plasma panels see: 3122 785 14990

F_15800_000.eps 290906

Contents

Page

Contents

Page
65-74 65-74 65-74 65-74 65-74 65-74 65-74 65-74 65-74 65-74 65-74 65-74 96-105 107 107 111 113 121-122 121-122 121-122 121-122 121-122 121-122 121-122

1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety Instructions, Warnings, and Notes 5 3. Directions for Use 7 4. Mechanical Instructions 8 5. Service Modes, Error Codes, and Fault Finding 11 6. Block Diagrams, Test Point Overviews, and Waveforms Wiring Diagram 21 Block Diagram Supply 22 Block Diagram Video 23 Block Diagram Audio 24 Testpoint Overview Small Signal Board 6093.1 25 Testpoint Overview Small Signal Board 6141.1 26 Block Diagram IBO Zapper 27 Testpoint Overview IBO Zapper (Bottom Side) 28 I2C Overview 29 Supply Voltage Overview 30 7. Circuit Diagrams and PWB Layouts Diagram PDP FHP Supply: Filter Standby (A2) 31 PDP FHP Supply: Protection (A3) 32 PDP FHP Supply: Pre Conditioner (A5) 33 PDP FHP Supply: LLC Supply (A6) 34 PDP FHP Supply: AUX Supply (A7) 35 SSB: Tuner and IF (B1) 42 SSB: Hercules (B2) 43 SSB: Sync Interface (B3) 44 SSB: Audio Delay line (Reserved) (B4) 45 SSB: Audio Processing (B5) 46 SSB: DC-DC Converter (B6) 47 SSB: Diversity Tables B1-B6 (B1-6) 48 SSB: Scaler (B7) 49 SSB: Scaler Supply (B8) 50 SSB: Scaler Interface (B9) 51

PWB 36-41 36-41 36-41 36-41 36-41 65-74 65-74 65-74 65-74 65-74 65-74 65-74 65-74 65-74

8. 9.

10. 11.

SSB: SDRAM (B10) 52 SSB: Flash / Control (B11) 53 SSB: HDMI (N.A.) (B12) 54 SSB: MUX Sync Interface (B13) 55 SSB: Digital I/O (B14) 56 SSB: Analog I/O (B15) 57 SSB: Top Connectors (B16) 58 SSB: Side Connectors (B17) 59 SSB: ADC (B18) 60 SSB: Columbus (B19) 61 SSB: EPLD (B20) 62 SSB: EPLD (B21) 63 SSB: Diversity Tables B9-B21 (B9-21) 64 SSB: 61411 (B1-B21) 75-95 PDP Audio Amplifier Panel (C) 106 Side I/O Panel (D) 108 Control Board (E) 110 LED Panel (J) 112 IBO Zapper: Mojo (K1) 114 IBO Zapper: Flash Memory (K2) 115 IBO Zapper: Power Supply (K3) 116 IBO Zapper: Interface (K4) 117 IBO Zapper: Analog Back End (K5) 118 IBO Zapper: Front End (K6) 119 IBO Zapper: Common Interface (K7) 120 Alignments 123 Circuit Descriptions, Abbreviation List, and IC Data Sheets 127 Abbreviation List 129 IC Data Sheets 132 Spare Parts List 134 Revision List 154

Copyright 2006 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.

Published by WS 0670 BG CD Customer Service

Printed in the Netherlands

Subject to modification

EN 3122 785 15672

EN 2

1.

LC4.9E AB

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). Power consumption - Normal operation (W) - Stand-by (W) Dimensions (WxHxD cm) Weight (kg) : 450 : <2 : 124x68x10.4 : 42

1.1
1.1.1

Technical Specifications
Vision Display type Screen size Resolution (HxV pixels) Contrast ratio - 42PF5520D/10 - 42PF7520D/10 Light output (cd/m2) Viewing angle (HxV degrees) Tuning system Reception standards : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Plasma 42" (107 cm), 16:9 852 x 480 10,000:1 13,000:1 1500 160x160 PLL Analogue & digital terrestrial TV (DVB-T) PAL B/G, D/K, I SECAM B/G, D/K, L/L' PAL B/G; SECAM L/L' NTSC M/N 3.58, 4.43 VGA (640x480) VGA (720x400) VGA (720x480) MAC (640x480) MAC (832x624) SVGA (800x600) XVGA (1024x768) WXGA (1280x768) WXGA (1280x960) WXGA (1280x1024) 640x480i - 1fH 720x576i - 1fH 640x480p - 2fH 720x576p - 2fH 852x480p - 2fH 1920x1080i - 2fH 100 presets VHF UHF S-band Hyper-band

1.2

Connection Overview
Note: The following connector colour abbreviations are used (acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, and Ye= Yellow.

1.2.1

Side I/O connections

S-Video Video Audio L R

E_14710_005.eps 210404

TV Colour systems Video playback Supported computer formats

Figure 1-1 Side I/O connections S-Video (Hosiden): Video Y/C - In 1 - Ground Y Gnd 2 - Ground C Gnd 3 - Video Y 1 VPP / 75 ohm 4 - Video C 0.3 VPP / 75 ohm Cinch: Video CVBS - In, Audio - In Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm Mini Jack: Audio Head phone - Out Bk - Head phone 32 - 600 ohm / 10 mW 1.2.2 Rear Connections
PCMCIA DATA SPDIF AERIAL IN

H H j j

jq jq jq

Supported video formats

ot

Presets/channels Tuner bands

DVI
1 9 17 8 16 24 C1 C2 C5 C3 C4

EXT 2 AUDIO

EXT 1

1.1.2

Sound
DVI-I

Sound systems

Maximum power (WRMS) 1.1.3 Miscellaneous Power supply: - Mains voltage (VAC) - Mains frequency (Hz) Ambient conditions: - Temperature range (C) - Maximum humidity

: : : : :

FM-mono FM-stereo B/G NICAM B/G, D/K, I, L AV Stereo 2 x 15

DVI Audio In

EXT 2

EXT 1

UART I 2C ComPair F_15660_001.eps 280705

Figure 1-2 Rear I/O Aerial - In - - IEC-type (EU)

Coax, 75 ohm

D

: 220 - 240 : 50 / 60

Mini Jack: Audio - In 1 - Ground Gnd 2 - Audio L 0.5 VRMS / 10 kohm 3 - Audio R 0.5 VRMS / 10 kohm

H j j

: +5 to +40 : 90% R.H.

Technical Specifications, Connections, and Chassis Overview
PCMCIA 1. Ground 2. Data 3 3. Data 4 4. Data 5 5. Data 6 6. Data 7 7. Card Enable 1 8. Address 10 9. Output Enable 10. Address 11 11. Address 9 12. Address 8 13. Address 13 14. Address 14 15. Program / Write Enable 16. Ready or Busy / Interrupt Request 17. Power (VCC) 18. Programming and Periferal Supply 1 19. Address 16 20. Address 15 21. Address 12 22. Address 7 23. Address 6 24. Address 5 25. Address 4 26. Address 3 27. Address 2 28. Address 1 29. Address 0 30. Data 0 31. Data 1 32. Data 2 33. Write Protect / IO Port is 16-Bit 34. Ground 35. Ground 36. Card Detect 1 37. Data 11 38. Data 12 39. Data 13 40. Data 14 41. Data 15 42. Card Enable 2 43. Refresh 44. IO Read 45. IO Write 46. Address 17 47. Address 18 48. Address 19 49. Address 20 50. Address 21 51. Power (VCC) 52. Programming and Periferal Supply 2 53. Address 22 54. Address 23 55. Address 24 56. Address 25 57. Reserved 58. Card Reset 59. Extend Bus Cycle 60. Input Port Acknowledge 61. Register Select and IO Enable 62. Battery Voltage Detect 2 / Audio Digital Waveform 63. Battery Voltage Detect 1 / Card Status Changed 64. Data 8 65. Data 9 66. Data 10 67. Card Detect 2 68. Ground Data 1 - SDA-S 2 - SCL-S 3 - Ground

LC4.9E AB

1.

EN 3
j

SPDIF 1 - RCA (Electrical)

Coax, 75 ohm

Service Connector (ComPair) 1 - SDA-S I2C Data (0 - 5 V) 2 - SCL-S I2C Clock (0 - 5 V) 3 - Ground Gnd Service Connector (UART) 1 - UART_TX Transmit 2 - Ground Gnd 3 - UART_RX Receive DVI-I: Digital/Analogue Video - In
1 9 17 8 16 24 C1 C2 C5 C3 C4 E_06532_004.eps 050404

jk j H

k H j

Figure 1-3 DVI-I connector 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 C1 C2 C3 C4 C5 - D2- D2+ - Shield - D4- D4+ - DDC_SCL - DDC_SDA - V-sync - D1- D1+ - Shield - D3- D3+ - +5V - Ground - HPD - D0- D0+ - Shield - D5- D5+ - Shield - CLK+ - CLK- Video Red - Video Green - Video Blue - H-sync - Ground j j H j j k jk j j j H j j j H j j j H j j H j j j j j j H

Gnd

DDC clock DDC data 0-5V

Gnd

Gnd Hot Plug Detect

Gnd

Gnd

0.7 VPP / 75 ohm 0.7 VPP / 75 ohm 0.7 VPP / 75 ohm 0-5V Gnd

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

20

2

21

E_06532_001.eps 050404

1

Figure 1-4 SCART connector 1 2 3 4 5 6 7 8 - Audio R - Audio R - Audio L - Ground Audio - Ground Blue - Audio L - Video Blue - Function Select 0.5 VRMS / 1 kohm 0.5 VRMS / 10 kohm 0.5 VRMS / 1 kohm Gnd Gnd 0.5 VRMS / 10 kohm 0.7 VPP / 75 ohm 0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 k j k H H j j j

I2C Data (0 - 5 V) I2C Clock (0 - 5 V) Gnd

jk j H

EN 4
9 10 11 12 13 14 15 16 17 18 19 20 21

1.
- Ground Green - n.c. - Video Green - n.c. - Ground Red - Ground - Video Red - Status/FBL

LC4.9E AB
Gnd 0.7 VPP / 75 ohm

Technical Specifications, Connections, and Chassis Overview
H j H H j j H H k j H 1 2 3 4 5 6 7 8 - Audio R - Audio R - Audio L - Ground Audio - Ground Blue - Audio L - n.c. - Function Select 0.5 VRMS / 1 kohm 0.5 VRMS / 10 kohm 0.5 VRMS / 1 kohm Gnd Gnd 0.5 VRMS / 10 kohm 0 - 2 V: INT 4.5 - 7 V: EXT 16:9 9.5 - 12 V: EXT 4:3 Gnd k j k H H j

Gnd Gnd 0.7 VPP / 75 ohm 0 - 0.4 V: INT 1 - 3 V: EXT / 75 ohm - Ground Video Gnd - Ground FBL Gnd - Video Terr. CVBS 1 VPP / 75 ohm - Video CVBS/Y 1 VPP / 75 ohm - Shield Gnd

EXT2: Video Y/C - in, CVBS - In/Out, Audio - In/Out

20

2

21

E_06532_001.eps 050404

1

9 10 11 12 13 14 15 16 17 18 19 20 21

- Ground Green - n.c. - n.c. - n.c. - Ground Red Gnd - Ground Gnd - YC/C - in 0.7 VPP / 75 ohm - n.c. - Ground Video Gnd - Ground Gnd - Video Mon. CVBS 1 VPP / 75 ohm - YC/Y - in 0.7 VPP / 75 ohm - Shield Gnd

j H

H H j H H k j H

Figure 1-5 SCART connector

1.3

Chassis Overview

PLASMA DISPLAY PANEL LOUDSPEAKER COMPARTMENT PDP AUDIO AMPLIFIER PANEL

C A

B K E

SMALL SIGNAL BOARD IBO ZAPPER KEYBOARD CONTROL PANEL

POWER SUPPLY PANEL LOUDSPEAKER COMPARTMENT

IR & LED PANEL

J D

SIDE I/O PANEL

F_15670_001.eps 010805

Figure 1-6 PWB locations

Safety Instructions, Warnings, and Notes

LC4.9E AB

2.

EN 5

2. Safety Instructions, Warnings, and Notes
Index of this chapter: 2.1 Safety Instructions 2.2 Warnings 2.3 Notes Service Default Mode (see chapter 5) with a colour bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or 61.25 MHz for NTSC (channel 3). Where necessary, measure the waveforms and voltages with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in stand-by (F). These values are indicated by means of the appropriate symbols. The semiconductors indicated in the circuit diagram and in the parts lists, are interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors. Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the "double-D symbol", are trademarks of Dolby Laboratories.

2.1

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.





2.3.2

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 (= x10-6), nano-farads (n= x10-9), or pico-farads (p= x10-12). 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

Rework on BGA (Ball Grid Array) ICs General Although (LF)BGA assembly yields are very high, there may still be a requirement for component rework. By rework, we mean the process of removing the component from the PWB and replacing it with a new component. If an (LF)BGA is removed from a PWB, the solder balls of the component are deformed drastically so the removed (LF)BGA has to be discarded. Device Removal As is the case with any component that, is being removed, it is essential when removing an (LF)BGA, that the board, tracks, solder lands, or surrounding components are not damaged. To remove an (LF)BGA, the board must be uniformly heated to a temperature close to the reflow soldering temperature. A uniform temperature reduces the risk of warping the PWB. To do this, we recommend that the board is heated until it is certain that all the joints are molten. Then carefully pull the component off the board with a vacuum nozzle. For the appropriate temperature profiles, see the IC data sheet. Area Preparation When the component has been removed, the vacant IC area must be cleaned before replacing the (LF)BGA. Removing an IC often leaves varying amounts of solder on the mounting lands. This excessive solder can be removed with either a solder sucker or solder wick. The remaining flux can be removed with a brush and cleaning agent. After the board is properly cleaned and inspected, apply flux on the solder lands and on the connection balls of the (LF)BGA. Note: Do not apply solder paste, as this has been shown to result in problems during re-soldering.

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
2.3.1

Notes
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

EN 6

2.

LC4.9E AB

Safety Instructions, Warnings, and Notes
Use only original spare-parts listed in the Service-Manuals. Not listed standard material (commodities) has to be purchased at external companies. Special information for lead-free BGA ICs: these ICs will be delivered in so-called "dry-packaging" to protect the IC against moisture. This packaging may only be opened shortly before it is used (soldered). Otherwise the body of the IC gets "wet" inside and during the heating time the structure of the IC will be destroyed due to high (steam-) pressure inside the body. If the packaging was opened before usage, the IC has to be heated up for some hours (around 90C) for drying (think of ESD-protection!). Do not re-use BGAs at all! For sets produced before 1.1.2005, containing leaded soldering tin and components, all needed spare parts will be available till the end of the service period. For the repair of such sets nothing changes.

Device Replacement The last step in the repair process is to solder the new component on the board. Ideally, the (LF)BGA should be aligned under a microscope or magnifying glass. If this is not possible, try to align the (LF)BGA with any board markers. So as not to damage neighbouring components, it may be necessary to reduce some temperatures and times. More Information 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. 2.3.4 Lead-free Solder Philips CE is producing lead-free sets (PBF) from 1.1.2005 onwards. Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 5 and 6 refer to the production year, digits 7 and 8 refer to production week (in example below it is 1991 week 18).
MODEL : 32PF9968/10
MADE IN BELGIUM 220-240V ~ 50/60Hz 128W VHF+S+H+UHF





In case of doubt whether the board is lead-free or not (or with mixed technologies), you can use the following method: Always use the highest temperature to solder, when using SAC305 (see also instructions below). De-solder thoroughly (clean solder joints to avoid mix of two alloys). Caution: For BGA-ICs, you must use the correct temperatureprofile, 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. 2.3.5 Alternative BOM identification In September 2003, Philips CE introduced a change in the way the serial number (or production number, see Figure 2-1) is composed. From this date on, the third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative BOM (Bill of Materials used for producing the specific model of TV set). It is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different O.E.M.s. By looking at the third digit of the serial number, the service technician can see if there is more than one type of B.O.M. used in the production of the TV set he is working with. He can then consult the At Your Service Web site, where he can type in the Commercial Type Version Number of the TV set (e.g. 28PW9515/12), after which a screen will appear that gives information about the number of alternative B.O.M.s used. If the third digit of the serial number contains the number 1 (example: AG1B033500001), then there is only one B.O.M. version of the TV set on the market. If the third digit is a 2 (example: AG2B0335000001), then there are two different B.O.M.s. Information about this is important for ordering the correct spare parts! For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26 = 35 different B.O.M.s can be indicated by the third digit of the serial number. 2.3.6 Practical Service Precautions It makes sense to avoid exposure to electrical shock. While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard. Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.

PROD.NO: AG 1A0617 000001

S
Figure 2-1 Serial number example

BJ3.0E LA
E_06532_024.eps 130606

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

P

b

Figure 2-2 Lead-free logo 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 400C. To stabilise the adjusted temperature at the solder-tip. To exchange solder-tips for different applications. Adjust your solder tool so that a temperature of around 360C - 380C is reached and stabilised at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400C, otherwise wear-out of tips will increase drastically and flux-fluid will be destroyed. To avoid wear-out of tips, switch "off" unused equipment or reduce heat. Mix of lead-free soldering tin/parts with leaded soldering tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully clear the solder-joint from old tin and re-solder with new tin.



Directions for Use

LC4.9E AB

3.

EN 7

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

EN 8

4.

LC4.9E AB

Mechanical Instructions

4. Mechanical Instructions
Index of this chapter: 4.1 Cable Dressing 4.2 Service Positions 4.3 Assy/Panel Removal 4.4 Set Re-assembly Notes: Figures below can deviate slightly from the actual situation, due to the different set executions. Follow the disassembling instructions in described order.

4.1

Cable Dressing

F_15660_007.eps 280705

Figure 4-1 Cable dressing

4.2

Service Positions
For easy servicing of this set, there are a few possibilities created: The buffers from the packaging (see figure "Rear cover"). Foam bars (created for service). Aluminium service stands (created for Service).

The foam bars (order code 3122 785 90580 for two pieces) can be used for all types and sizes of Flat TVs. 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

4.2.1

Foam Bars

E_06532_018.eps 170504

E_06532_019.eps 170504

Figure 4-3 Aluminium stands (drawing of MkI) Figure 4-2 Foam bars

Mechanical Instructions
The aluminium stands (order code 3122 785 90480) can be mounted with the back cover removed or still left on. So, the stand can be used to store products or to do measurements. It is also very suitable to perform duration tests without taking much space, without having the risk of overheating, or the risk of products falling. The stands can be mounted and removed quick and easy with use of the delivered screws that can be tightened and loosened manually without the use of tools. See figure above. Note: Only use the delivered screws to mount the monitor to the stands.

LC4.9E AB

4.

EN 9

1

F_15660_010.eps 280705

Figure 4-6 DVI-I & SPDIF connector screws 1. Very cautiously disconnect the LVDS cable (1) from the SSB panel (see Figure "Cover shield"). Notice that this cable is very fragile. 2. Unplug the black cable coming from the IBO zapper/SSB board from the Audio/STBY board (see Figure "Cover shield"). 3. Remove all other cables (2) from the IBO zapper/SSB board (see Figure "Cover shield"). 4. Remove the 5 fixation screws that connect the top shielding with the bottom shielding, and also the 2 fixation screws that connect it with the rear connector plate, see Figure "Cover shield". 5. Remove the fixation screws from the DVI-I connector and from the SPDIF connector, see Figure "DVI-I & SPDIF connector screws (1)". 6. Remove the upper part of the shield (with the IBO zapper attached to it) from the lower part of the shield (on which the SSB board is located), by unhooking it from its brackets. Be careful not to damage the LVDS connector on the SSB board, see Figure "Cover shield". 7. Finally, remove the IBO zapper (attached to the top shielding with 4 screws), and the SSB board (attached to the lower shielding with 2 screws), see Figure "IBO zapper & SSB".

4.3
4.3.1

Assy/Panel Removal
Rear Cover

3 3 3 4 2 3 4 4 1 4

3

3

3

3

3
F_15420_034.eps 070605

Figure 4-4 Rear cover Warning: Disconnect the mains power cord before you remove the rear cover. 1. Remove the screws that secure the rear cover (see Figure "Rear cover screws"); these are: a) 4 x big torx screws (1) for securing the stand/wall mount; b) 5 x small torx screws (2) near the rear I/O panel; c) 22 x small torx screws (3) that secure the loudspeaker compartments [6 of these screws are in sunken holes (4) ] and along the edges of the rear cover. 2. Lift the rear cover from the cabinet cautiously. Make sure that wires and other internal components are not damaged during cover removal. 4.3.2 Cover Shield for IBO-zapper & SSB

F_15660_008.eps 280705

3 1 2

Figure 4-7 IBO-zapper & SSB

3

F_15660_009.eps 280705

Figure 4-5 Cover shield

EN 10 4.4

4.

LC4.9E AB

Mechanical Instructions

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 positions. See Figure "Cable dressing". Be careful with the fragile LVDS cable. For a complete description of the Plasma panel, see the LGE plasma panel Service Manual (12nc is listed on the frontpage).

Service Modes, Error Codes, and Fault Finding

LC4.9E AB

5.

EN 11

5. Service Modes, Error Codes, and Fault Finding
Index of this chapter: 5.1 Test Points 5.2 Service Modes 5.3 Problems and Solving Tips Related to CSM 5.4 Service Tools 5.5 Error Codes 5.6 The Blinking LED Procedure 5.7 Fault Finding and Repair Tips How to Enter To enter 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 "Service" jumpers on the TV board during cold start and apply mains (see Figure "Service jumpers"). Then press the mains button (remove the short after start-up). Caution: Entering SDM by shorting "Service" jumpers will override the +8V-protection. Do this only for a short period. When doing this, the service-technician must know exactly what he is doing, as it could damage the television set. Or via ComPair.

5.1

Test Points
This chassis is equipped with test points in the service printing. In the schematics test points are identified with a rectangle box around Fxxx or Ixxx. Perform measurements under the following conditions: Television set in Service Default Alignment Mode. Video input: Colour bar signal. Audio input: 3 kHz left channel, 1 kHz right channel.

5.2

Service Modes
Service Default mode (SDM) & Service Alignment Mode (SAM) offers several features for the service technician, while the Customer Service Mode (CSM) & Digital Customer Service Mode (DCSM) are used for communication between the call centre and the customer. This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the possibilities of structured troubleshooting, error code reading, and software version readout for all chassis. Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD-ROM drive (see also paragraph "ComPair").

1

F_15270_053.eps 180505

Figure 5-1 Service jumpers

5.2.1

Service Default Mode (SDM) Purpose To create a predefined setting for measurements to be made. To override software protections. To start the blinking LED procedure. To inspect the error buffer. To check the life timer. Specifications Tuning frequency: 475.25 MHz. Colour system: PAL-BG. All picture settings at 50% (brightness, colour contrast, hue). Bass, treble, and balance at 50 %; volume at 25 %. All service-unfriendly modes (if present) are disabled. The service unfriendly modes are: Timer / Sleep timer. Child / parental lock. Blue mute. Hotel / hospital mode. Auto shut off (when no "IDENT" video signal is received for 15 minutes). Skipping of non-favourite presets / channels. Auto-storage of personal presets. Auto user menu time-out. Auto Volume Levelling (AVL).

After entering 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.

00035

LC4XEP1 1.14/S4XGNV 1.17

SDM

ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000

F_15430_039.eps 080605

Figure 5-2 SDM menu

EN 12

5.

LC4.9E AB

Service Modes, Error Codes, and Fault Finding
Menu Explanation 1. LLLLL. This represents the run timer. The run timer counts normal operation hours, but does not count standby hours. 2. AAABCD-X.Y. This is the software identification of the main microprocessor: A= the project name (LC04.x). B= the region: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM. C= the software diversity: Europe: T= 1 page TXT, F= Full TXT, V= Voice control. LATAM and NAFTA: N= Stereo non-dBx, S= Stereo dBx. Asian Pacific: T= TXT, N= non-TXT, C= NTSC. ALL regions: M= mono, D= DVD, Q= Mk2. D= the language cluster number. X= the main software version number (updated with a major change that is incompatible with previous versions). Y= the sub software version number (updated with a minor change that is compatible with previous versions). 3. EEEEE-F.GG. This is the software identification of the Scaler: EEEEEE= the scaler sw cluster F= the main sw version no. GG= the sub-version no. 4. SAM. Indication of the Service Alignment Mode. 5. Error Buffer. Shows all errors detected since the last time the buffer was erased. Five errors possible. 6. Option Bytes. Used to set the option bytes. See "Options" in the Alignments section for a detailed description. Seven codes are possible. 7. 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. 8. Options. Used to set the option bits. See "Options" in the Alignments section for a detailed description. 9. Tuner. Used to align the tuner. See "Tuner" in the Alignments section for a detailed description. 10. White Tone. Used to align the white tone. See "White Tone" in the Alignments section for a detailed description. 11. Audio. No audio alignment is necessary for this television set. 12. NVM Editor. Can be used to change the NVM data in the television set. See table "NVM data" further on. 13. SC NVM Editor. Can be used to edit Scaler NVM. 14. ComPaIr. Can be used to switch on the television to In System Programming (ISP) mode, for software uploading via ComPair. Caution: When this mode is selected without ComPair connected, the TV will be blocked. Remove the AC power to reset the TV. How to Navigate In SAM, select menu items with the MENU UP/DOWN keys on the remote control transmitter. The selected item will be highlighted. 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. In SAM, when you press the MENU button twice, the set will switch to the normal user menus (with the SAM mode still active in the background). To return to the SAM menu press the MENU or STATUS/EXIT button. When you press the MENU key in while in a submenu, you will return to the previous menu.

How to Navigate Use one of the following methods: When you press the MENU button on the remote control, the set will switch on the normal user menu in the SDM mode. On the TV, press and hold the VOLUME DOWN and press the CHANNEL DOWN for a few seconds, to switch from SDM to SAM and reverse. How to Exit Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set. If you turn the television set off by removing the mains (i.e., unplugging the television) without using the mains button, the television set will remain in SDM when mains is re-applied, and the error buffer is not cleared. 5.2.2 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. AKB switching. Software alignments (Tuner, White Tone, Geometry & Audio). NVM Editor. ComPair Mode switching. How to Enter To enter 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 (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.

00035 LC4XEP1 1.14/S4XGNV 1.17 ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000 . Clear . Options . Tuner . White Tone . Audio . NVM Editor . SC NVM Editor . ComPair Mode Clear ?

SAM

On
F_15430_040.eps 080605

Figure 5-3 SAM menu How to Store SAM Settings To store the settings changed in SAM mode, leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set.

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 the television set. If you turn the television set "off" by removing the mains (i.e., unplugging the television) without using the mains button, the television set will remain in SAM when mains is re-applied, and the error buffer is not cleared. 5.2.3 Customer Service Mode (CSM) Purpose The Customer Service Mode shows error codes and information on the TV's operation settings. The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps the call centre to diagnose problems and failures in the TV set before making a service call. The CSM is a read-only mode; therefore, modifications are not possible in this mode. How to Enter To enter 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:

LC4.9E AB

5.

EN 13

How to Exit To exit CSM, use one of the following methods: Press the MENU, STATUS/EXIT, or POWER button on the remote control transmitter. Press the POWER button on the television set. 5.2.4 Digital Customer Service Mode (DCSM) Purpose The Digital Customer Service Mode shows error codes and information on the IBO Zapper module operation settings. The call centre can instruct the customer to activate DCSM by telephone and read off the information displayed. This helps the call centre to diagnose problems and failures in the IBO Zapper module before making a service call. The DCSM is a read-only mode; therefore, modifications are not possible in this mode. How to Activate To activate the DCSM, put the television in its digital mode (via the A/D button on the remote control). 1. Press the "Digital" Menu button on the remote control to activate the digital user menu ("Setup"). 2. Activate the "Information" sub menu ( via the "down" and "right" cursor buttons). 3. In the "Information" sub menu, press the following buttons on the remote control to activate the DCSM: "GREEN RED YELLOW 9 7 5 9". Then, the "Service menu" will appear (see figures below). Menu explanation

1 00035

LC4XEP1 1.14/S4XGNV 1.17 CSM

2 CODES 0 0 0 0 0 3 OP 000 057 140 032 120 128 000 4 5 6 NOT TUNED 7 PAL 8 STEREO 9 CO 50 CL 50 BR 50 0 AVL Off

F_15430_040.eps 080605

E_14970_040.eps 090904

Figure 5-4 CSM menu Menu Explanation 1. Indication of the decimal value of the operation hours counter, Software identification of the main microprocessor (see "Service Default or Alignment Mode" for an explanation), and the service mode (CSM = Customer Service Mode). 2. Displays the last five errors detected in the error code buffer. 3. Displays the option bytes. 4. Displays the type number version of the set. 5. Reserved item for P3C call centres (AKBS stands for Advanced Knowledge Base System). 6. Indicates the television is receiving an "IDENT" signal on the selected source. If no "IDENT" signal is detected, the display will read "NOT TUNED" 7. Displays the detected Colour system (e.g. PAL/NTSC). 8. Displays the detected Audio (e.g. stereo/mono). 9. Displays the picture setting information. 10. Displays the sound setting information.

Figure 5-5 DCSM menu - 1

E_14970_041.eps 100904

Figure 5-6 DCSM menu - 2

EN 14

5.

LC4.9E AB

Service Modes, Error Codes, and Fault Finding
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys (if necessary) to select BRIGHTNESS. 6. Press the MENU LEFT/RIGHT keys to increase or decrease the BRIGHTNESS value. 7. Use the MENU UP/DOWN keys to select PICTURE. 8. Press the MENU LEFT/RIGHT keys to increase or decrease the PICTURE value. 9. Press the MENU button on the remote control transmitter twice to exit the user menu. 10. The new PERSONAL preference values are automatically stored. White Line around Picture Elements and Text If: The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter, Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select SHARPNESS. 6. Press the MENU LEFT key to decrease the SHARPNESS value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored. Snowy Picture Check CSM line 6. If this line reads "Not Tuned", check the following: Antenna not connected. Connect the antenna. No antenna signal or bad antenna signal. Connect a proper antenna signal. The tuner is faulty (in this case line 2, the Error Buffer line, will contain error number 10). Check the tuner and replace/ repair the tuner if necessary. Black and White Picture If: The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter, Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select COLOR. 6. Press the MENU RIGHT key to increase the COLOR value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu.

E_14970_042.eps 090904

Figure 5-7 DCSM menu - 3 1. Hardware version: This indicates the version of the IBO Zapper module hardware. 2. Application SW: The application software version. 3. NOR Version: The NOR Flash image software version 4. Digital Frequency: The digital frequency that the set is tuned to. 5. Bit Error Rate: The error rate measured before the error correction algorithm circuitry. (this value gives an impression of the received signal) 6. Tuner AGC: Tuner AGC value. 7. COFDM Lock: Indication if COFDM decoder is locked. 8. AFD Status: Status of the Active Picture Format Descriptor. 9. Terrestrial Delivery System Parameters: Bandwidth: Bandwidth of the received signal. Constellation Pattern: Displays the signal constellation. Alpha Value: Displays the Alpha Value. FEC Scheme: Displays the Forward Error Correcting Scheme Guard Interval: Displays the value for the Guard Interval. Transmission Mode: Displays the Transmission Mode. 10. Audio Comp Type: Type of detected audio stream. 11. MHEG Present: Indicates if MHEG is present or not. 12. CIM Card Present: Indicates if CIM card is present or not. How to exit Press the BLUE button on the Remote Control to exit DCSM.

5.3
5.3.1

Problems and Solving Tips Related to CSM
Picture Problems Note: The problems described below are all related to the TV settings. The procedures used to change the value (or status) of the different settings are described. Picture too Dark or too Bright If: The picture improves when you press the AUTO PICTURE button on the remote control transmitter, or The picture improves when you enter the Customer Service Mode, Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode.

Service Modes, Error Codes, and Fault Finding
8. The new PERSONAL preference value is automatically stored. Menu Text not Sharp Enough If: The picture improves after you have pressed the AUTO PICTURE button on the remote control transmitter, Then: 1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to choose PERSONAL picture mode. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys to select PICTURE. 6. Press the MENU LEFT key to decrease the PICTURE value. 7. Press the MENU button on the remote control transmitter twice to exit the user menu. 8. The new PERSONAL preference value is automatically stored.

LC4.9E AB

5.

EN 15

Manually (by asking questions to you): Automatic diagnosis is only possible if the microcontroller of the television is working correctly and only to a certain extent. When this is not the case, ComPair will guide you through the faultfinding tree by asking you questions (e.g. Does the screen give a picture? Click on the correct answer: YES / NO) and showing you examples (e.g. Measure test-point I7 and click on the correct oscillogram you see on the oscilloscope). You can answer by clicking on a link (e.g. text or a waveform picture) that will bring you to the next step in the faultfinding process. By a combination of automatic diagnostics and an interactive question / answer procedure, ComPair will enable you to find most problems in a fast and effective way. How to Connect This is described in the chassis faultfinding database in ComPair. Caution: It is compulsory to connect the TV to the PC as shown in the picture below (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!
TO UART SERVICE CONNECTOR TO I2C SERVICE CONNECTOR

5.4
5.4.1

Service Tools
ComPair Introduction ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development on the European DST (service remote control), which allows faster and more accurate diagnostics. ComPair has three big advantages: 1. ComPair helps you to quickly get an understanding on how to repair the chassis in a short time by guiding you systematically through the repair procedures. 2. ComPair allows very detailed diagnostics (on I2C level) and is therefore capable of accurately indicating problem areas. You do not have to know anything about I2C 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 microprocessor is working) and all repair information is directly available. When ComPair is installed together with the Force/SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away. Specifications ComPair consists of a Windows based fault finding program and an interface box between PC and the (defective) product. The ComPair interface box is connected to the PC via a serial (or RS-232) cable. For this chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector(s). The ComPair faultfinding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: Automatically (by communicating with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I2C/UART level. ComPair can access the I2C/UART bus of the television. ComPair can send and receive I2C/UART commands to the microcontroller of the television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I2C/UART buses of the TV-set.

PC

VCR

Power 9V DC

I2C

E_06532_021.eps 180804

Figure 5-8 ComPair interface connection How to Order ComPair order codes (EU/AP/LATAM): Starter kit ComPair32/SearchMan32 software and ComPair interface (excl. transformer): 3122 785 90450. ComPair interface (excl. transformer): 4822 727 21631. Starter kit ComPair32 software (registration version): 3122 785 60040. Starter kit SearchMan32 software: 3122 785 60050. ComPair32 CD (update): 3122 785 60070 (year 2002), 3122 785 60110 (year 2003 onwards). SearchMan32 CD (update): 3122 785 60080 (year 2002), 3122 785 60120 (year 2003), 3122 785 60130 (year 2004). ComPair firmware upgrade IC: 3122 785 90510. Transformer (non-UK): 4822 727 21632. Transformer (UK): 4822 727 21633. 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. 5.4.2 LVDS Tool Introduction This service tool (also called "ComPair Assistant 1") may help you to identify, in case the TV does not show any picture, whether the Small Signal Board (SSB) or the display of a Flat TV is defective. Furthermore it is possible to program EPLDs with this tool (Byteblaster). Read the user manual for an explanation of this feature.

EN 16

5.

LC4.9E AB

Service Modes, Error Codes, and Fault Finding

Since 2004, the LVDS output connectors in our Flat TV models are standardised (with some exceptions). With the two delivered LVDS interface cables (31p and 20p) you can cover most chassis (in special cases, an extra cable will be offered). 5.5.3 When operating, the tool will show a small (scaled) picture on a VGA monitor. Due to a limited memory capacity, it is not possible to increase the size when processing high-resolution LVDS signals (>= 1280x768). Generally this tool is intended to determine if the SSB is working or not. Thus to determine if LVDS, RGB, and sync signals are okay. How to Connect Connections are explained in the user manual, which is delivered with the tool. Note: To use the LVDS tool, you must have ComPair release 2004-1 (or later) on your PC (engine version >= 2.2.05). For every TV type number and screen size, one must choose the proper settings via ComPair. The ComPair file will be updated regularly with new introduced chassis information. How to Order LVDS tool (incl. two LVDS cables: 31p and 20p): 3122 785 90671. Service Manual LVDS tool: 3122 785 00810. LVDS cable 20p (for Telra 14-inch): 3122 785 90810. LVDS cable 30p (for LC4.3): 3122 785 90820. LVDS cable 41p-to-31p for CA1 (dual -> single LVDS): 3122 785 90830.

Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset. 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). Table 5-1 Error code overview
Error 0 1 Device Not applicable Not applicable Error Description No Error Mis-match of TV Hercules SW and Scaler SW Check Item Diagram

2 3 4

Not applicable Not applicable Genesis Scaler Flash-ROM

-

B7 + B8

I2C error while 7801 communicating with the Genesis Scaler and/or Flash-ROM 7B01 is faulty/empty +5V protection General I2C error I2C error 7752

B10 B6

5 6 7 8

Scaler supply 7752 Not applicable ADC Scaler EEPROM

1102, 7L04, 7M00 B1 + B18 + B19 7L04 B18 B11

5.5

Error Codes
9

I2C error while 7C01 communicating with the Scaler EEPROM 7207 I2C error while communicating with the Hercules EEPROM (NVM for TV). Remark: when the Hercules EEPROM is defective, the Hercules should operate with its default values.

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. 5.5.1 How to Read the Error Buffer You can read the error buffer in 3 ways: On screen via the SAM (if you have a picture). Examples: 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. 5.5.2 How to Clear the Error Buffer
14 10

Hercules EEPROM

B2

Tuner

I2C error while 1102, F102, F104, B1 communicating with F107 the PLL tuner I2C error while 7M00 communicating with the 2D/3D combfilter Columbus 7D03 I2C error while communicating with the iBoard HDMI Panellink Receiver/ Decoder (only in NAFTA and AP sets) Read-write error with the Scaler SDRAM 7B01 B19

11

Columbus

12 13

Not applicable HDMI Panellink Receiver/ Decoder

B12 (only in NAFTA and AP sets)

Scaler SDRAM

B10

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/STATUS button (do not allow the display to time out between entries while keying the sequence). Make sure the menu item CLEAR is highlighted. 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.

15 16

Not applicable EPLD

-

B20 + B21

I2C error while 7N02 communicating with EPLD I2C error while Digital Module communicating with (only on Digital the Digital Module sets) (only on Digital sets) -

17

Digital Module (only on Digital sets)

18

Not applicable

-

Service Modes, Error Codes, and Fault Finding 5.6 The Blinking LED Procedure
Using this procedure, you can make the contents of the error buffer visible via the front LED. This is especially useful when there is no picture. When the SDM is entered, the front LED will blink the contents of the error-buffer: The LED blinks with as many pulses as the error code number, followed by a time period of 1.5 seconds, in which the LED is off. Then this sequence is repeated. Any RC5 command terminates this sequence. Example of error buffer: 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.

LC4.9E AB

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5.7

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.

5.7.1

NVM Editor In some cases, it can be handy 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! Do not change the Scaler NVM settings, as this will hamper the DVI functionality of the TV set! Always note down the existing NVM settings, before changing the settings. This will enable you to return to the orgininal settings, if the new settings turn out to be incorrect. Table 5-2 NVM editor overview Hex .ADR .VAL .Store 0x000A 0x0000 Dec 10 0 Store? Description Existing value New value

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LC4.9E AB

Service Modes, Error Codes, and Fault Finding

Table 5-3 NVM Default values (option bit settings through NVM Editor in SAM Mode) 42PF7520D/10 1 1 0 1 1 1 0 0 59 3B PSE OPC PRIS Last color pattern status in factory mode Service default mode on/off Service Align mode on/off Scavm On / Off 0 0 0 0 0 0 0 0 0 00 Mute status Auto mode Cable/Antenna mode Last power status of the set Child lock enabled Surf mode on/off Factory mode on For PAL color enhancement in ES4 0 1 0 1 0 0 0 1 8A Radio mode or TV mode WAKE-UP MODE TV in Hotel mode Keyboard locked HBL Blue stretch mode SL Comb filter On/Off 0 0 0 0 0 1 0 1 A0 Signal Strength Switch in MK2 LPG Lock/Unlock DVD tray Screen saver mode Black Stretch Mode Black Stretch Depth Coring on SVM PIP QSS 0 0 0 1 1 1 1 0 78 42PF5520D/10 1 1 0 1 1 1 0 0 59 3B 0 0 0 0 0 0 0 0 0 00 0 1 0 1 0 0 0 1 8A 0 0 0 0 0 1 0 1 A0 0 0 0 1 1 1 1 0 78

Byte Nr. Bit

Feature/Mode

Description

Byte 0 174(dec)

0 QSS (LSB) 1 FMI 2 HCO 3 HP2 4 FSL 5 TFR 6 OSVE 7 MVK (MSB) Total Dec Values Total Hex Values

Mode of quasi split sound amplifier Connection of output of QSS amplifier EHT tracking mode Synchronization of OSD/Text display Forced slicing level for vertical sync DC transfer ratio of luminance signal Black current measuring in overscan (For Future Usage, as defined by software)

Byte 1 175(dec)

0 PSE 1 OPC 2 PRIS 4 WHITE PATTERN ON 5 SDM MODE 6 SAM MODE 7 SVMA Total Dec Values Total Hex Values

3 CONTINUOUS FACTORY Continuous factory mode

Byte 2 176(dec)

0 MUTE STATUS 1 TUNER AUTO MODE 2 CABLE MODE 3 LAST POWER MODE 4 CHILD LOCK MODE 5 SURF MODE 6 FACTORY MODE 7 PSNS Total Dec Values Total Hex Values

138 138

Byte 3 177(dec)

0 RADIO/TV MODE 1 WAKE-UP MODE 2 HOTEL MODE 3 HOTEL KBD LOCK 4 HBL 5 BLS 6 SL 7 CFA0 Total Dec Values Total Hex Values

160 160

Byte 4 178(dec)

0 Signal Strength 1 LPG 2 DVD TRAY LOCK 3 SCRSAVER MODE 4 BKS 5 BSD 6 CRA0 7 PIP QSS Total Dec Values Total Hex Values

120 120

Service Modes, Error Codes, and Fault Finding
42PF7520D/10

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5.

EN 19

Byte Nr. Bit

Feature/Mode

Description

Byte 5 179(dec)

0 FFI 1 NNR 2 MUS 3 GAM 4 CBS 5 LLB 6 DSA 7 DSK Total Dec Values Total Hex Values

Fast Filter No red reduction during blue stretch NTSC matrix Gamma control Control sequence of beam current limiting Low level of beam current limiter Dynamic skin tone angle area Dynamic skin tone angle on/ off

0 1 1 1 0 0 1 0 78 4E

0 1 1 1 0 0 1 0 78 4E 1 0 0 0 0 0 0 0 1 01 0 1 0 0 0 0 0 0 2 02

Byte 6 180(dec)

0 LTI status 1 Inc_Life_Time 2 PC_Mode 3 HD_Mode 4 Tact_Switch 5 Set_In_Special_Stby 6 Hotel_OSDDisplay 7 Hotel_MonitorOut Total Dec Values Total Hex Values

LTI last status Inc_Life_Time PC_Mode HD_Mode Tact_Switch Set_In_Special_Stby Hotel_OSDDisplay Hotel_MonitorOut

1 0 0 0 0 0 0 0 1 01

Byte 7 181(dec)

0 Hotel_IconMode 1 DBE 2 SD 3 Set_in_PC_Sleep_Mode 4 Reserved 5 Reserved 6 Reserved 7 Reserved Total Dec Values Total Hex Values

Hotel_IconMode DBE SD Set_in_PC_Sleep_Mode Reserved Reserved Reserved Reserved

0 1 0 0 0 0 0 0 2 02 5.7.3 Tuner and IF

5.7.2

Load Default NVM Values In case a blank NVM is placed or when the NVM content is corrupted, default values can be downloaded into the NVM. (For empty NVM replacement, short the SDM with a jumper and apply the mains voltage. Remember to remove the jumper after the reload is completed). After the default values are downloaded, it will be possible to start up and to start aligning the TV set. This is no longer initiated automatically; to initiate the download the following action has to be performed: 1. Switch "off" the TV set by disconnecting the AC Power plug. 2. Short circuit the SDM jumpers (keep short-circuited). 3. Press P+ or Ch+ on the local keyboard (and keep it pressed). 4. Switch on the TV set via the AC Power plug. 5. Keep pressing the P+/Ch+ button until the set has started up and the SDM is shown. Alternative method: 1. Go to SAM. 2. Select NVM Editor (not SC NVM Editor). 3. Select ADR (address) to 1 (dec). 4. Change the VAL (value) to 170 (dec). 5. Store the value. 6. Disconnect the mains plug and wait for a few seconds. 7. Reconnect the mains plug and wait until the set goes into its standby mode (red LED lights up). 8. Restart the set.

No Picture in RF Mode, but there is a Noise Raster 1. Check whether picture is present in AV. If not, go to Video processing troubleshooting section. 2. If present, check if the Option settings are correct. 3. Check if all the supply voltages are present (3.3/5/8/12/33 V). 4. Check if the I2C lines are working correctly (3.3 V). 5. Manually store a known channel and check if there is IF output at Tuner pin 11. 6. Check the tuning DC voltage at pin 2 of the Tuner. The DC voltage should vary according to the frequency/channel being chosen. 7. If the tuning voltage is OK, check the tuner output, pin 11. 8. If it has no output, the Tuner may have a defect. Change the Tuner. Sound in Picture Problem for L' System (rolling horizontal lines) 1. Check whether AGC L' in SAM mode is set to 0. 2. If yes, align the set to correct value. Required System is not Selected Correctly Check whether a Service jumper (#4204 & 4205, 0805 size) is present. If yes, remove it.

EN 20
5.7.4

5.

LC4.9E AB

Service Modes, Error Codes, and Fault Finding

Video Processing No Power 1. Check +12 V and 3V3 at position 1J02. 2. If no supply, check the connector 1J02. 3. If it is correct, check the power supply board. Power Supply is Correct, but no Green LED 1. Check if the connectors 1K00 are properly inserted. 2. If they are inserted correctly, check if the 3V3 is present. No Picture Display (blank screen with correct sound output) 1. Check whether the user menu is visible. 2. If the user menu is OK, activate teletext mode. 3. If teletext is OK, the problem is in the ADC (B18) & Columbus 3D combfilter (B19), if present (depending on model, see also paragraph "Teletext Path" in chapter 9). 4. If the user menu is not visible, check if the LCD panel backlight is ON. 5. If the backlight is OFF, the problem is in the power supply board or LCD panel. Also check pin 12 (LAMP_ON_OFF) of 1J02. It should be HIGH during normal operation. Note: For faultfinding purposes, it is important to know the following: in Pixel Plus and Digital Crystal Clear models, which have an ADC (B18) and Columbus 3D combfilter (B19), the digital input of the scaler is used for the digital video path (Hercules output), whereas the analogue RGB input (analogue input of the scaler) is only used for teletext. This means that no mixed mode (video plus teletext simultaneously) is possible. If there is sound and teletext, but no video and user menu (blank screen), the digital path (Hercules - ADC - Columbus - Scaler) is faulty. If there is sound but no teletext, the back-end part (Scaler - LCD panel) is faulty. In Crystal Clear models, which do not have an ADC and Columbus, the RGB path (analogue input of scaler) is used for both video and teletext. No TV, but PC is Present 1. Check if Hsync_SDTV and Vsync_SDTV are present at pin 1 & pin13 of 7E03. 2. If they are present, check teletext output. 3. If there is no teletext output, the IC TDA150xx may be defect.

5.7.5

Power Supply In case the power supply does not work, check (apart from the obvious fuse-check) if the oscillators in IC7001 and IC7U01 are working. If not, replace the ICs.

Block Diagrams, Test Point Overviews, and Waveforms

LC4.9E AB

6.

21

6. Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram

8736

1736

2P3

8735

3P4

1M10

1002

7PP

8102

A

PDP POWER SUPPLY

0323

INVERTER
0311 9P 1M03 10P 1M46 11P

10P

1M02

1735

2P3

7P

1M52

C

AUDIO AMPLIFIER
9P

INVERTER
8323 C561 10P

CN308

RIGHT SPEAKER

2P3

LEFT SPEAKER

8202

8301

8103

CN32

8P13

8150

8900 8199

8146 8152 11P 10P 1J00 9P 1J04 1K00 6P 8120

31P 1P07 1301 3P

1J01

9P 3P LVDS CONNECTOR DISPLAY

B

SSB
1K04 11P

1500

CONTROL BOARD

32P

CN22

8P13

D
8136 11P

SIDE I/O

1K02 Tuner 1402 3P 32P 1G03

Tuner

K

3P

IBO ZAPPER

AC INLET

1107 1101 3P 3P

E

1M01 3P 8101

J

LED PANEL
6P 0345 F_15670_002.eps 151205

1M36

Block Diagrams, Test Point Overviews, and Waveforms

LC4.9E AB

6.

22

Block Diagram Supply
SUPPLY 42" FHP
A5
PRECONDITIONER
HOT

A6

LLC SUPPLY

HOT COLD
LATCH +5V_STBY_SW 4 A3 1

A7

AUX-SUPPLY
VA VCC NC

PRECONDITIONER
6600 GBU8J 3 1 F601 + 2 4 2603 1 2 4 6 7608 6606 6605 F604 SW25V-HOT 3608 3663 2663 6661 SW25V-HOT 6095 3611 3614 3610 16 F600 400V-HOT A2 A 400V-HOT 2616 400V-HOT

- LLC-CONVERTER 6611 7610 STW26NM50
G

7003 TCET1102 3 2

VS-SUPPLY

- AUDIO SUPPLY -

DC_PROT A3 +12V 1M10 1 2 3 4 TO 1M10 AL AMBIENT LIGHT

5600 14

-

VS

NC

5612
D S

0323 1 2 3 4 TO 5 CN23 6 PDP 7 8 9 10

- BIAS-SUPPLY 25V-HOT 7090 : 7092 PROT 3092

7093 LM317T BIAS

1002 F001 5290 3095 2053 5002 3096 5001 7007 7020 HIGH SIDE DRIVE 7005 STU16NB501 D G S I038 F005 4 2 F004 3011 7008, 7021, 7012 LOW 14 SIDE DRIVE 13 I083 7006 BZG03 D G S I057 10 3346 9 3072 VTUN A7 12 3346 VCC NC 6 11 12 10 3345 6348 2 CONTROL 3345 VCC 16 14 VB 12 3 1200 T2A +30V +12V_OVP 7260 L4973 7,8 3 +8V6 F1A 3 1 6292 1084 4 6291 D458L20U 2 6291 2292 F293 DC_PROT VSND_POS GND_SND VSND_NEG 2294 7 6 5 4 3 2 1 TO 1002 C PDP AUDIO VCC 0323 11 10 9 8 7 6 5 4 3 2 1 0333 1 2 3 4 TO 5 CN33 6 PDP 7 8 9

7001 MC34067P

F294

+12V SUPPLY

+9V_STBY VTUN +5V_STBY_SW

15 VCC

10 11 F003

+12V

TO 1M46 B21 SSB

VS

NC

CONTROL
6660 2664 7017 7018 3 SOFT START + CURRENT PROTECTION 6 8 7 OB FI OA 14

VCC

VA NC NC

3660

0342 1 2 3 TO 4 CN42 5 PDP 6 7

F608 V.S._UNSW 70-90V

3668 8 7650 MC33368 7 ZC 7 16 LINE I622

7661 MC34063AD DC TO DC CONVERTOR

1 2

6641 F609

VS- SWITCHED
D 7050 PSMN035 S 2021 G 6142 BYD33D VA

VS VS

5660 6665
5004 6663 2662 16 3 6044 STTH2003C 2 2020 1 7641 VS 3 CONTROL POK A3 6 I083 11 10 3671 9 1082 F2,5A 6045 BYU28 2022 1083 F2,5A 6021 BYU28 +30V VB VS_UNSW 70-90V F016 3680 14

BIAS

VA

VA NC NC

CONTROL
VCC 3605 5 I618 3651 6 CS GATE MULT VFB

12 F610 11 3641 I625 12

I200 VCC SWITCH ON LOGIC VS

NC

0352 1 2 3 TO 4 CN52 5 PDP 6 7

3 I629 2640
D G S

7640 BSN20

3050

3053

3640

A2
I201 SWITCH LOGIC SEQUENCE DISCHARGE G I202 D S 7052 IRFR18N15D

FITER STANDBY0306
1 3 4 TO CN6 PDP

+3V3_STBY_SW

3666 2666 7010,7011 AC3 100-230VAC2 7002 TCET1102 3 2 4 1 CONTROL CIRCUIT VRS FEEDBACK VRS A3 A3

VSA-CONTROL

VCC

1004 T2A

6

HOT COLD
AC5 100-230VAC1

0311 1 2 3 4 TO CN11 PDP

A7

AUX-SUPPLY
70-90V

A3 A3 A3 A3 A3

VRA VRS VCEGO VSAGO PFCGO

5 6 7 8 9

3450 MAINS FILTER UNIT 0308 2
MAINS FILTER

3451 +t0 3452 -t0 I101 I107

- VA-SUPPLY F140 5121 2 1 2121 I213 VCC_GO 6120 G 7117 PSMN035 7202 BSN20 D S I220 2210 3113 6111 6113 2114 4 7120 TCET1102 3 2 1 +30V VRA A3 A3 3 2 4 1 7220 TCET1102 7227 TL431CZ 3224 A7 3225 A3 A7 A6 POK A3 VA VS_UNSW 70-90V

2 1

1400 T6.3A

5005 5401 5402 1
MAINS FILTER

+t0

- VCC SUPPLY 1200 T2A 7200 BSN304 D S 3202 I208 I214 7212 TEA1507 VCC I236 8 DRAIN 1 3 2 4

5220 14 13 12 11 3

6225 2 1 5225 2225

VCC

2

1

2

1110 TA5

3118

1

D 7110 VCC & DRAIN CONTROL 7112 TEA1507 8 1450 3 1460 F411 3 I105 1 3 VCC CTRL DRAIN DRIVER SENCE 6 5 2 4

S

3

4

A3

PROTECTIONS
+9V_STBY_SW

- ERROR LOGGING POR 0319 1 2 3 4 5 6 7 8 9 10 F300 F301 F302 F304 F305

G

HOT COLD

7217 I216 PSMN070 D 6 G DRIVE 3 S CTRL 5 SENCE 4 DEMAG 3218 GND 1 3214 6211 5 7

52