Philips LC4.9A-AA Service Manual

Colour Television Chassis

LC4.9A

For manual LGE plasma panel see: 3122 785 15590

For manual FHP plasma panel see: 3122 785 14580

For manual SDI plasma panel see: 3122 785 14990

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Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis Overview 2

2. Safety Instructions, Warnings, and Notes 4

3. Directions for Use 7

4. Mechanical Instructions 8

5. Service Modes, Error Codes, and Fault Finding 16

6. Block Diagrams, Testpoint Overviews, and

Waveforms

Wiring Diagram 42” FHP 25 Wiring Diagram 42” SDI 26 Wiring Diagram 50” SDI 27 Block Diagram Supply 42” FHP/LGE 28 Block Diagram Video 29 Block Diagram Audio 30 I2C Overview 31 Supply Line Overview 32

7. Circuit Diagrams and PWB Layouts Diagram PWB PDP FHP Supply: Filter Standby (A2) 33 38-43 PDP FHP Supply: Protection (A3) 34 38-43 PDP FHP Supply: Pre Conditioner (A5) 35 38-43 PDP FHP Supply: LLC Supply (A6) 36 38-43 PDP FHP Supply: AUX Supply (A7) 37 38-43 SSB: Tuner and IF (B1) 44 67-76 SSB: Hercules (B2) 45 67-76 SSB: Sync Interface (B3) 46 67-76 SSB: Audio Delay Line (Lipsync) (B4) 47 67-76 SSB: Audio Processing (B5) 48 67-76 SSB: DC-DC Converter (B6) 49 67-76 SSB: Diversity Tables B1-B6 (B1-B6) 50 SSB: Scaler (B7) 51 67-76 SSB: Scaler (B8) 52 67-76 SSB: Scaler Interface (B9) 53 67-76 SSB: SDRAM (B10) 54 67-76 SSB: Flash / Control (B11) 55 67-76

Copyright 2005 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.

SSB: HDMI (B12) 56 67-76 SSB: MUX-Sync Interface (B13) 57 67-76 SSB: Top Connectors (B16) 58 67-76 SSB: Side Connectors (B17) 59 67-76 SSB: ADC (B18) 60 67-76 SSB: Columbus (B19) 61 67-76 SSB: EPLD (B20) 62 67-76 SSB: EPLD (B21) 63 67-76 SSB: Diversity Tables B9-B21 (B9-B21) 64 SSB: Digital I/O (B22) 65 67-76 SSB: Cinch Analog I/O (1FH) (B23) 66 67-76 PDP Audio Amplifier Panel (C) 77 78 Side I/O Panel (D) 79 80 Control Board (E) 81 81 LED Panel (J) 82 83

8. Alignments 85

9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 90 Abbreviation List 98 IC Data Sheets 101

10. Spare Parts List 105

11. Revision List 114

Published by WS 0663 BG Customer Service Printed in the Netherlands Subject to modification EN 3122 785 15451

EN 2 LC4.9A AA1.

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 : Plasma Screen size : 42” (107 cm), 16:9 Screen size : 50” (127 cm), 16:9 Resolution (HxV pixels) : 42 inch: 852 x 480

: 50 inch: 1366 x 768

Contrast ratio :

- 42PF7320 /79 /93 /98 Z/93 : 13,000:1

- 42PF7520Z /79 /93 : 3,000:1

- 50PF7320 /79 /93 /98 : 10,000:1 Light output (cd/m Viewing angle (HxV degrees) : 160x160 Tuning system : PLL TV Colour systems : PAL B/G, D/K, I

Video playback : PAL B/G; SECAM L/L’

Supported computer formats : VGA (640x480)

Supported video formats : 640x480i - 1fH

Presets/channels : 100/125 presets Tuner bands : VHF

) : 1500

: SECAM B/G, D/K, L/L’

: NTSC M/N 3.58, 4.43

: VGA (720x400) : VGA (720x480) : MAC (640x480) : MAC (832x624) : SVGA (800x600) : XVGA (1024x768) : WXGA (1280x768) : WXGA (1280x960) : WXGA (1280x1024)

: 720x576i - 1fH : 640x480p - 2fH : 720x576p - 2fH : 852x480p - 2fH : 1920x1080i - 2fH

: UHF : S-band

: Hyper-band

Power consumption

- Normal operation (W) : ≈ 450

- Stand-by (W) : < 2

Dimensions (WxHxD cm) : 42 inch: 124x68x10.4

: 50 in.:141.5x78x10.4

Weight (kg) : 42 inch: 38

: 50 inch: 50

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

AudioS-Video Video

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Figure 1-1 Side I/O connections

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

Cinch: Video CVBS - In, Audio - In

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

Mini Jack: Audio Head phone - Out

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

1.2.2 Rear Connections

/ 75 ohm j

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

1.1.2 Sound

Sound systems : FM-mono

Maximum power (W

) : 2 x 15

RMS

1.1.3 Miscellaneous

Power supply:

- Mains voltage (V

) : 220 - 240

- Mains frequency (Hz) : 50 / 60

Ambient conditions:

- Temperature range (°C) : +5 to +40

- Maximum humidity : 90% R.H.

: FM-stereo B/G : NICAM B/G, D/K, I, L : AV Stereo

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Figure 1-2 Rear I/O

Aerial - In

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

Cinch: Video CVBS - In, Audio - In

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

/ 75 ohm jq

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

Cinch: Video CVBS - Out, Audio - Out

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

/ 75 ohm kq

/10 kohm kq

RMS

/ 10 kohm kq

RMS

Technical Specifications, Connections, and Chassis Overview

EN 3LC4.9A AA 1.

Cinch: CVI-1 Video YPbPr - In

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

/ 75 ohm jq

Cinch: CVI-1 Audio - In

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

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

Cinch: PC Audio - In

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

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

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

Service connector (ComPair)

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

/ 75 ohm j

P / 75 ohm j

C Data (0 - 5 V) jk

C Clock (0 - 5 V) j

3 - Ground Gnd H

Service connector (UART)

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

HDMI/PC-D: Digital Video, Digital Audio - In

18 2

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Figure 1-3 HDMI (type A) connector

1 - D2+ Data channel j 2 - Shield Gnd H 3 - D2- Data channel j 4 - D1+ Data channel j

5 - Shield Gnd H 6 - D1- Data channel j 7 - D0+ Data channel j 8 - Shield Gnd H 9 - D0- Data channel j 10 - CLK+ Data channel j 11 - Shield Gnd H 12 - CLK- Data channel j 13 - n.c. 14 - n.c. 15 - DDC_SCL DDC clock j 16 - DDC_SDA DDC data jk 17 - Ground Gnd H 18 - +5V j 19 - HPD Hot Plug Detect j 20 - Ground Gnd H

PC VGA/DVI-2: Video 2fH RGB/YPbPr - In

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Figure 1-4 VGA Connector

1 - Video Red/Pr 0.7 V 2 - Video Green/Y 0.7 V 3 - Video Blue/Pb 0.7 V 4-n.c.

/ 75 ohm j

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

+5 V j

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

1.3 Chassis Overview

PLASMA DISPLAY PANEL

LOUDSPEAKER COMPARTMENT

SMALL SIGNAL

BOARD

KEYBOARD CONTROL

PANEL

Figure 1-5 PWB locations

PDP AUDIO

AMPLIFIER PANEL

POWER SUPPLY

PANEL

LOUDSPEAKER

COMPARTMENT

IR & LED PANEL

SIDE I/O PANEL

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EN 4 LC4.9A AA2.

Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

Index of this chapter:

2.1 Safety Instructions

2.2 Warnings

2.3 Notes

2.1 Safety Instructions

Safety regulations require the following during a repair:

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

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

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

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

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

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

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

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

between the two pins of the Mains (AC Power) plug.

2. Set the Mains (AC Power) switch to the "on" position

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

3. Measure the resistance value between the pins of the

Mains (AC Power) plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 Mohm and 12 Mohm.

4. Switch "off" the set, and remove the wire between the

two pins of the Mains (AC Power) plug.

• Check the cabinet for defects, to prevent touching of any inner parts by the customer.

2.3 Notes

2.3.1 General

• Measure the voltages and waveforms with regard to the

chassis (= tuner) ground (H), or hot ground (I), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode (see chapter 5) with a colour bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or

61.25 MHz for NTSC (channel 3).

• Where necessary, measure the waveforms and voltages

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

• 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.

2.3.2 Schematic Notes

• All resistor values are in ohms, and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 kohm).

• Resistor values with no multiplier may be indicated with either an "E" or an "R" (e.g. 220E or 220R indicates 220 ohm).

• All capacitor values are given in micro-farads (μ= x10 nano-farads (n= x10

• Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF).

• An "asterisk" (*) indicates component usage varies. Refer to the diversity tables for the correct values.

• The correct component values are listed in the Spare Parts List. Therefore, always check this list when there is any doubt.

-9

), or pico-farads (p= x10

-12

-6

2.2 Warnings

• All ICs and many other semiconductors are susceptible to

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

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

– Wristband tester 4822 344 13999.

• Be careful during measurements in the high voltage section.

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

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

2.3.3 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.

Safety Instructions, Warnings, and Notes

EN 5LC4.9A AA 2.

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.

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).

To avoid wear-out of tips, switch “off” unused equipment or reduce heat.

• Mix of lead-free soldering tin/parts with leaded soldering tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully clear the solder-joint from old tin and re-solder with new tin.

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

• 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 90°C) 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.

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 the mixing of two alloys).

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Figure 2-1 Serial number example

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.

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 400°C. – To stabilise the adjusted temperature at the solder-tip. – To exchange solder-tips for different applications.

• Adjust your solder tool so that a temperature of around 360°C - 380°C is reached and stabilised at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400°C, otherwise wear-out of tips will increase drastically and flux-fluid will be destroyed.

Caution: 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.

2.3.5 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.

EN 6 LC4.9A AA2.

• 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.

Safety Instructions, Warnings, and Notes

3. Directions for Use

You can download this information from the following websites:

http://www.philips.com/support http://www.p4c.philips.com

Directions for Use

EN 7LC4.9A AA 3.

EN 8 LC4.9A AA4.

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

4.1 Cable Dressing

Notes:

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

• Follow the disassembling instructions in described order.

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).

4.2.1 Foam Bars

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Figure 4-2 Foam bars

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

Figure 4-1 Cable dressing

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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 4-3 Aluminium stands (drawing of MkI)

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

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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.

4.3 Assy/Panel Removal

4.3.1 Metal Rear Cover

Mechanical Instructions

EN 9LC4.9A AA 4.

Caution: Disconnect the Mains/AC 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 "Foam Bars"). Caution: do not put pressure on the display, but let the monitor lean on the speakers or the Front cover.

2. Remove all T10 screws around the edges of the metal rear cover: “parker” screws around the outer rim, “tapping” screws around the connector plate.

3. Remove the four "mushrooms" from the rear cover.

4. Lift the metal rear cover from the set. Make sure that wires and flat foils are not damaged.

4.3.2 Speaker Compartment Cover

After removing the metal rear cover, you gain access to the Speaker Compartment covers.

1. Remove all T10 screws [1] around the outer rim of the cover (see Figure “Speaker compartment cover removal”).

2. Remove the T10 screws [2] on top of the inner rim, including the one which secures the grounding clamp [3, see Figure “Grounding clamp”].

3. Now, remove the plastic cable fixation noose [4, see Figure “Cable fixation noose”].

4. After removal of all the screws, slightly push the top of the cover inwards. This will lift the outer rim slightly up so you can take the cover out.

Figure 4-5 Grounding clamp

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Figure 4-4 Speaker compartment cover removal

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Figure 4-6 Cable fixation noose

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EN 10 LC4.9A AA4.

Mechanical Instructions

4.3.3 Side I/O Panel

After removal of the Speaker Compartment Covers, this panel is accessible.

1. Disconnect the cable [1] from the panel.

2. Remove the T10 mounting screws [2] that hold the assy.

3. Remove the panel from its bracket [3], by pushing against the front side of the side I/O cinch connectors.

1 3

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4.3.4 LED Panel

Figure 4-8 LED panel

1. Remove the fixation screws [1] and take the panel out of its brackets.

2. Disconnect the cable [2] from the panel.

4.3.5 Keyboard Control Panel

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Figure 4-7 Side I/O panel removal

When it is defective, replace the whole unit.

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Figure 4-9 Keyboard control panel

1. Remove the panel [1] from its three brackets [2].

2. Disconnect the cable [3] from the panel.

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Mechanical Instructions

EN 11LC4.9A AA 4.

4.3.6 SSB Cover Shield

Figure 4-10 SSB cover shield

4.3.7 SSB Board

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1. Remove the two fixation screws [1] that secure the SSB board on the lower part of the SSB shielding, see Figure “SSB board”.

2. Remove the SSB panel.

4.3.8 Power Supply Panel

Figure 4-12 SSB

3 3

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Figure 4-11 DVI-I connector and rear I/O panel screws

1. Very cautiously disconnect the LVDS cable [1] from the SSB panel (see Figure “SSB board cover shield”). Notice that this cable is very fragile.

2. Remove all other cables [2] from the SSB board (see Figure “SSB board cover shield”), including the grounding cable.

3. Remove the fixation screws [3], see Figure “SSB board cover shield” and remove the SSB shield with the SSB board inside, and the rear I/O panel still attached to it.

4. Remove the fixation screws [1] from the DVI-I connector and from the rear panel, see Figure “DVI-I connector and rear panel screws”, and remove the rear I/O panel from the SSB board.

5. Remove the upper part of the shield from the SSB panel, by unhooking it from its brackets. Be careful not to damage the LVDS connector on the SSB board, see Figure “SSB board cover shield”.

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Figure 4-13 Power supply panel

1. Disconnect all cables [1] from the panel.

2. Remove the fixation screws [2] from the panel.

3. Take the panel out of its brackets.

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EN 12 LC4.9A AA4.

4.3.9 Class D Audio Amplifier Panel

Figure 4-14 Class D audio amplifier panel

1. Disconnect all cables [1] from the panel.

2. Pinch the plastic fixation clamps [2] firmly between your fingers, and pull the panel upwards.

3. Take the panel out of its brackets [3].

Mechanical Instructions

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Mechanical Instructions

EN 13LC4.9A AA 4.

4.3.10 Plasma Display Panel / Glass Plate

1. Remove the T20 display panel mounting screws [1].

2. Remove the T10 screws [2] from the mounting frame.

3. Unplug all cable(s): – LVDS cable at SSB side (fragile connector!). – SSB supply cables at the Main Supply board. – Mains cable at the Main Supply board. – Side I/O cable at SSB side (fragile connector!).

– Cable at LED panel. – Keyboard cable at SSB side. – Audio Amplifier supply cable at the Main Supply board. – Loudspeaker cables (incl. ferrites) at the Audio panel.

4. Lift the metal frame (together with all PWBs) from the display panel (see figure “Frame lift”).

5. After removal of the frame, lift the PDP from the set.

Figure 4-15 Display panel removal

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Figure 4-16 Frame lift

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EN 14 LC4.9A AA4.

4.3.11 PDP Glass Plate

In order to remove/exchange the PDP glass plate:

1. Remove the PDP as described earlier.

2. Remove the T10 screws [1] from the mounting frame.

3. After removal of the frame, you can lift the glass plate from the set.

Mechanical Instructions

Figure 4-17 Glass plate removal

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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 positions. See Figure "Cable dressing". Be careful with the fragile LVDS cable.

• For a complete description of the Plasma panel, see the LGE, FHP, or SDI plasma panel Service Manual (12nc is listed on the front-page).

Mechanical Instructions

EN 15LC4.9A AA 4.

EN 16 LC4.9A AA5.

Service Modes, Error Codes, and Fault Finding

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

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) and Service Alignment Mode (SAM) offers several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the call centre and the customer.

This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the possibilities of structured troubleshooting, error code reading, and software version read-out for all chassis. Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD-ROM drive (see also paragraph "ComPair").

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.

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: 61.25 MHz.

• Colour system: NTSC.

• 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 LC4XAP1 1.14/S4XGNV 1.17 SDM ERR 0 0 0 0 0 OP 000 057 140 032 120 128 000

F_15430_058.eps

260705

Figure 5-2 SDM menu

Service Modes, Error Codes, and Fault Finding

EN 17LC4.9A AA 5.

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 LC4XAP1 1.14/S4XGNV 1.17 SAM ERR 0 0 0 0 0

OP 000 057 140 032 120 128 000

. Clear Clear ? . Options . Tuner . White Tone . Audio . NVM Editor . SC NVM Editor

. ComPair Mode On

Figure 5-3 SAM menu

F_15430_059.eps

080605

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.

EN 18 LC4.9A AA5.

Service Modes, Error Codes, and Fault Finding

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.

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:

1 00035 LC4XAP1 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

8. Displays the detected Audio (e.g. stereo/mono).

9. Displays the picture setting information.

10. Displays the sound setting information.

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.

5.3 Problems and Solving Tips Related to CSM

5.3.1 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.

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.

F_15430_060.eps

080605

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).

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.

Service Modes, Error Codes, and Fault Finding

EN 19LC4.9A AA 5.

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.

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.

You do not have to know anything about I

C 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 fault finding 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 I ComPair can access the I ComPair can send and receive I

C/UART bus of the television.

C/UART level.

C/UART commands to the micro controller of the television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I

C/UART buses of the TV-set.

• Manually (by asking questions to you): Automatic diagnosis is only possible if the micro controller of the television is working correctly and only to a certain extent. When this is not the case, ComPair will guide you through the fault finding 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 fault finding 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 fault finding 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!

UART SERVICE

CONNECTOR

TO I2C SERVICE CONNECTOR

5.4 Service Tools

5.4.1 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 I is therefore capable of accurately indicating problem areas.

C level) and

PC VCR I2CPower

9V DC

E_06532_021.eps

Figure 5-5 ComPair interface connection

180804

EN 20 LC4.9A AA5.

Service Modes, Error Codes, and Fault Finding

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.

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).

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.

5.5 Error Codes

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

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.

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

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.

Service Modes, Error Codes, and Fault Finding

EN 21LC4.9A AA 5.

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).

Table 5-1 Error code overview

Error Device Error Description Check Item Diagram

0 Not applicable No Error 1 Not applicable Mis-match of TV

2 Not applicable - - 3 Not applicable - - 4 Genesis Scaler

Flash-ROM

5 Scaler supply

7752

6 Not applicable General I

7ADC I 8 Scaler EEPROM I

9 Hercules

EEPROM

10 Tuner I2C error while

11 Columbus I

12 Not applicable - - 13 HDMI Panellink

Receiver/ Decoder

14 Scaler SDRAM Read-write error

15 Not applicable - - 16 EPLD I2C error while

17 Digital Module

(only on Digital sets)

18 Not applicable - - -

Hercules SW and Scaler SW

C error while communicating with the Genesis Scaler and/or Flash-ROM is faulty/empty

+5V protection 7752 B6

C error 7L04 B18

C error while communicating with the Scaler EEPROM

C error while

I communicating with the Hercules EEPROM (NVM for TV). Remark: when the Hercules EEPROM is defective, the Hercules should operate with its default values.

communicating with the PLL tuner

C error while communicating with the 2D/3D combfilter Columbus

C error while

I communicating with the iBoard HDMI Panellink Receiver/ Decoder (only in NAFTA and AP sets)

with the Scaler SDRAM

communicating with EPLD

I2C error while communicating with the Digital Module (only on Digital sets)

7801

7B01

C error 1102, 7L04, 7M00 B1 + B18

7C01 B11

7207 B2

1102, F102, F104, F107

7M00 B19

7D03 B12

7B01 B10

7N02 B20 +

Digital Module (only on Digital sets)

B7 + B8

B10

+ B19

(only in NAFTA and AP sets)

B21

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.

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 original settings, if the new settings turn out to be incorrect.

Table 5-2 NVM editor overview

Hex Dec Description

.ADR 0x000A 10 Existing value .VAL 0x0000 0 New value .Store Store?

EN 22 LC4.9A AA5.

Table 5-3 NVM Default values (option bit settings through NVM Editor in SAM Mode)

Byte Nr. Bit Feature/Mode Description

Byte 0 174(dec)

0 QSS (LSB) Mode of quasi split sound amplifier 1 1 FMI Connection of output of QSS amplifier 1 2 HCO EHT tracking mode 0 3 HP2 Synchronization of OSD/Text display 1 4 FSL Forced slicing level for vertical sync 1 5 TFR DC transfer ratio of luminance signal 1 6 OSVE Black current measuring in overscan 0 7 MVK (MSB) (For Future Usage, as defined by software) 0

Total Dec Values 59 Total Hex Values 3B

Service Modes, Error Codes, and Fault Finding

42PF7320 /79 /93 /98 42PF7320Z /93 42PF7520Z /93 50PF7320 /79 /93 /98

Byte 1 175(dec)

Byte 2 176(dec)

Byte 3 177(dec)

0 PSE PSE 0 1OPC OPC 0 2 PRIS PRIS 0 3 CONTINUOUS FACTORY Continuous factory mode 0 4 WHITE PATTERN ON Last colour pattern status in factory mode 0 5 SDM MODE Service default mode on/off 0 6 SAM MODE Service Align mode on/off 0 7 SVMA Scavem On / Off 0

Total Dec Values 0 Total Hex Values 00

0 MUTE STATUS Mute status 0 1 TUNER AUTO MODE Auto mode 1 2 CABLE MODE Cable/Antenna mode 0 3 LAST POWER MODE Last power status of the set 1 4 CHILD LOCK MODE Child lock enabled 0 5 SURF MODE Surf mode on/off 0 6 FACTORY MODE Factory mode on 0 7 PSNS For PAL colour enhancement in ES4 1

Total Dec Values 138 Total Hex Values 8A

0 RADIO/TV MODE Radio mode or TV mode 0 1 WAKE-UP MODE WAKE-UP MODE 0 2 HOTEL MODE TV in Hotel mode 0 3 HOTEL KBD LOCK Keyboard locked 0 4HBL HBL 0 5 BLS Blue stretch mode 1 6SL SL 0 7 CFA0 Comb filter On/Off 1

Total Dec Values 160 Total Hex Values A0

Byte 4 178(dec)

0 Signal Strength Signal Strength Switch in MK2 0 1LPG LPG 0 2 DVD TRAY LOCK Lock/Unlock DVD tray 0 3 SCRSAVER MODE Screen saver mode 1 4 BKS Black Stretch Mode 1 5 BSD Black Stretch Depth 1 6 CRA0 Coring on SVM 1 7 PIP QSS PIP QSS 0

Total Dec Values 120 Total Hex Values 78

Service Modes, Error Codes, and Fault Finding

Byte Nr. Bit Feature/Mode Description

Byte 5 179(dec)

Byte 6 180(dec)

0 FFI Fast Filter 0 1 NNR No red reduction during blue stretch 1 2 MUS NTSC matrix 1 3 GAM Gamma control 1 4 CBS Control sequence of beam current limiting 0 5 LLB Low level of beam current limiter 0 6 DSA Dynamic skin tone angle area 1 7 DSK Dynamic skin tone angle on/ off 0

Total Dec Values 78

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

Total Dec Values 1

Total Hex Values 01

EN 23LC4.9A AA 5.

42PF7320 /79 /93 /98 42PF7320Z /93 42PF7520Z /93 50PF7320 /79 /93 /98

Byte 7 181(dec)

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.

0 Hotel_IconMode Hotel_IconMode 0 1DBE DBE 1 2SD SD 0 3 Set_in_PC_Sleep_Mode Set_in_PC_Sleep_Mode 0 4 Reserved Reserved 0 5 Reserved Reserved 0 6 Reserved Reserved 0 7 Reserved Reserved 0

Total Dec Values 2 Total Hex Values 02

5.7.3 Tuner and IF

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 I

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.

5.7.4 Video Processing

No Power

1. Check +12 V and 3V3 at position 1J02.

C lines are working correctly (3.3 V).

EN 24 LC4.9A AA5.

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 fault finding 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.

Service Modes, Error Codes, and Fault Finding

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 (in TV sets with 37 inch screens) or in IC7001 and IC7U01 (in TV sets with 42 inch screens) are working. If not, replace the ICs.

Block Diagrams, Testpoint Overviews, and Waveforms

6. Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram 42” FHP

WIRING 42” FHP

25LC4.9A AA 6.

8736

AUDIO AMPLIFIER

2P3

1736

1M52

RIGHT

SPEAKER

1M02

INVERTERINVERTER

8323

10P

C561

LEFT

PDP POWER SUPPLY

0308

2P3

0311

8735

3P4

1M10

7PP

1002

10P

0323

1M03

10P

1M46

11P

2P3

1735

8102

SPEAKER

8202

8103

8P13

CN32

8199

8900

SSB

8150

31P

1P07

LVD S

CONNECTOR

8146

8152

11P

1J01

DISPLAY

10P

1J00

1J04

1K00

8120

CN22

CONTROL BOARD

1M01

8101

AC INLET

1107

UART

1101

Compair

Tuner

1K04

1K02

11P

8136

LED PANEL

0345

11P

SIDE I/O

1M36

F_15451_001.eps

151205

Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram 42” SDI

WIRING 42” SDI

26LC4.9A AA 6.

8736

AUDIO AMPLIFIER

2P3

17361735

1M52

RIGHT

SPEAKER

8735

CN07

2P3

10P

CN06

1M02

PDP POWER SUPPLY

1K00

CN308

2P3

10P

1M03

10P

1M46

11P

1M02

8103

8199

8900

8150

8146

8152

8102

INVERTERINVERTER

LEFT

SPEAKER

CONTROL BOARD

1M01

8101

AC INLET

SSB

31P

1J04

31P

LVD S

CONNECTOR

11P

1J01

(1M46)

10P

1J00

(1M03)

1107

UART

1J04

1103

Tuner

1101

Compair

1K00

1K04

1K02

11P

8120

8136

LED PANEL

0345

11P

SIDE I/O

1M36

F_15430_052.eps

281105

Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram 50” SDI

WIRING 50” SDI

27LC4.9A AA 6.

8736

AUDIO AMPLIFIER

2P3

1736

1M52

RIGHT

SPEAKER

10P

CN5007

10P

TO DISPLAY

CN1M46

11P

CN1M02

TO DISPLAY

CN1M03

10P

8735

PDP POWER SUPPLY

8103

8146

1K00

2P3

1735

1M02

INVERTERINVERTER

LEFT

SPEAKER

CONTROL BOARD

1M01

8101

8199

AC INLET

8900

SSB

8150

31P

1J04

31P

LVD S

CONNECTOR

11P

1J01(1M46)

10P

1J00(1M03)

1107

UART

1101

Compair

1J04

1103

Tuner

1K00(1M21)

11P

1K04(1M06)

1K02

8152

8120

8136

LED PANEL

0345

11P

SIDE I/O

1M36

F_15430_056.eps

281105

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Supply 42” FHP/LGE

SUPPLY42” FHP

FILTERS STANDBY

0308

MAINS INPUT

95-264Vac

400V_HOT

I508

400V_HOT

PROTECTIONS

+5V_INT_SW

- 2.5 Vref -

+5V_INT_SW

3304

1 K

7304

1400

T6.3A

7500 TNY256P

EN|UV

SOURCE

3324

5401 5005 5402

MAINS FILTER

6511

6510

3507 3035 3026

DRAIN

6501

1M05

1 2

IBO SUPPLY

(RES)

- VS PROTECTION -

3308

70-90V

3300

3301

2V5

3306

3102

3307

6513

6512

3506

F500

I510

6502

6506

HOT GROUND

7308 3+4

7 6

5 4

5500

4 1

RELAY CONTROL

ACTIVATING

3501

7501 TCET1102

2143

COLD GROUND

SUPPLY_ON

6503

6504

6505

7502

3 4

1450

ACTIVATING

1 K

- VA PROTECTION - - VCC PROTECTION - - 12V PROTECTION -

3311

6312

3312

2V5

6313

3313

3317

VSAGO

VCEGO

+8V6

DELAY

F503

3505

3503

7308 1+2

11 10

6325

3450

3 4

1460

3509

3508

2505

5503

I514

7375 7376

CONTROL

7352 7351

I905

VCEGO

+5V_INT_SW

7341 7004 7348

LATCH

+5V_INT_SW

7326 7327

UNDERVOLTAGE

PROTECTION

3451

6507

6321

3321

6322

+9V_STBY

3373

VSA

+5V_INT_SW

3349

3328

8V6

3452

-T 3036

-T

I504

F502

7461

7540

+3V3_STBY_SWVCC

IN OUT

COM

2V5

VSA_CONTROL

VCC_GO

100-230VAC1

100-230VAC2

25V_HOT

+9V_STBY

+5V_STBY_SW

+5V_INT_SW

I517

VCC

3320

3103

7 6

3322

3323

LATCH

POK

+3V3_STBY_SW

A2 A6 A3 A3

7333 3+4

VCC

6333

6334

VRA VRS VCEGO VSAGO

3333

3392

0311

2V5

3393

6600 GBU8J

1 2

4 5

PDP DISPLAY

6 7

PRECONDITIONER

6606

6605

F601

3608 3606

F608

3679

7333 1+2

11 10

+5V_INT_SW

7363 7366-1

IAK

BUFFER

+5V_STBY_SW

7391 7366-4

STANDBY

3682

I618

400V_HOT

TO CN11

+12V

3302

3334

3335

5600

1246

3666

3609

3603

3660

3661

3604

3659

3605

3671

3104

3651

- DC_PROT -

6340

3340

6362

6341

SUPPLY_ON

7608

3663

I620

3361

3610

2663

7650 MC33368P

7 6

7362

3364

ZCDET

MULT

7610

GATE

3358

6611

5612

6661

I613

VCC

3359

6364

6365

STANDBY

POWER_OK

28LC4.9A AA 6.

LLC SUPPLY

3675

F610

7661 MC34063D

VCC

SWE

SWC

DCOL

3641

7640

POK

DC_PROT

3388

RES

F600

5660

3677

I625

+5V_INT_SW

3389

7389

1M03

1 2

TO 1M03(1J00)

5 6

PDP DISPLAY

400V_HOT

SW25V_HOT

6665

F609

7641 7642

6642

+12V_OVP

B16

25V_HOT

7090 7091 7092

PROTECTION

3090 3092

- CONTROL -

2664

BIAS

2662

AUX SUPPLY

SOFTSTAR T

CONTROL

CURRENT

PROTECTION

+30V

70-90V

7013

7001 MC34067P

VCC

OSCCC

EAO

1260

T2A

1110

1200

T2A

VCC_GO

T5A

I220

3089

3081

I105

+5V_INT_SW

10 12

3107÷3109

7093 LM317T

IN OUT

COM

6002

3675

5260

I101

7110

I208

7202

6202

F003

F004

7112 TEA1507P

I213

3202

POK

F001

6111

3095

3082

3096

3097

5001

CONTROL

DRAIN

VCC

ISENCE

DRIVER

CTRL

3206

3209

7200

3203

3050

GND

DEM

3084

SW25V_HOT

7007 7020

HIGH

SIDE

DRIVE

7008 7021

LOW

SIDE

DRIVE

7117

3113

6111

I214

3214

7050

I200

SEQUENCE DISCHARGE

400V_HOT

I038

I057

I083

7260 L4973V3.3

REGULATOR

VCC

VFB

3116 3117

I106

6113

2114

7212 TEA1507P

CONTROL

CTRL

DEMAG

VCC

GND

6211

6142

6050

2053

7005

7006

HOT GROUND

OUT

3118

3115

DRAIN

DRIVE

6213

I202

5121

7052

7003 TCET1102

2143

5002

F005

12 11

5004

12 9

7002 TCET1102

2143

COLD GROUND

- +12V-SUPPLY -

5268

3269

- VA-SUPPLY -

+5V_INT_SW

7120 TCET1102

2143

- VCC-SUPPLY -

I236

7217

3149

3218

3213

3220

3053

I201

3268

3111

4 5

6133

5220

+5V_INT_SW

LATCH

1084

T1.0A

6044

1082

T2.5A

1083

T2.5A

6029

7121 7130

7220 TCET1102

F293

F294

+12V

+8V6

VCC

+12V

VCC

F_16040_022.eps

240206

1002

1M10

1M46

0323

0342

0352

6 5

PDP AUDIO

2 1

1 2

AMBI LIGHT

IBO ZAPPER

1 2

TO (1J01)

5 6 7

4 5

TO CN23

PDP DISPLAY

TO CN42

PDP DISPLAY

5 7

1 4

TO CN52

PDP DISPLAY

TO 1M02

TO 1M10

OR 1301

1M46

B16

SSB

(RES)

6291

6642

7042

3039

7010 7011

VRA

VSA_CONTROL

6226

5229

3228

7502

22942294

F016

3037

6042

VRS FEEDBACK

6230

F116

1 K

5290

2045

6045

2029

6021

3022 3080

6012

2269

2121

+30V

3111

VA Adj.

3229

2021

3072

3057

3224

5293

5291

5292

VSND_POS

GND_SND

VSND_NEG

5225

7230

IN OUT

COM

DC_PROT

70-90V

VTUN

+30V

VRS

+12V

VCC

+8V6

+5V_STBY_SW

VTUN

+9V_STBY

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Video

VIDEO

TUNER & VIF

B23

VIDEO

S-VHS

VIDEO

OUT

VIDEO

+5SW_a

1102 UV1318SD

CINCH ANALOGUE IO

+VTUN

TUNER

SCL

SDA

SEL_IF_SDM

1R02

1R07

1R06

SIDE AV

1002

1001

SVHS

IF-TER

CVI_P

CVI_Y_IN

CVI_Pb_IN

r_IN

1M36

7101

B17

2106

6104

FRONT_

7R12

4R68

4R70

4R69

SIDE

B17

CONNECTIONS

1K04

FRONT_YCVBS_IN

1104

3104

1106

SC2_Y_IN

Y_CVB

S_IN

SC2_C_IN

FRONT_C_IN

SC2_CVBS_MON_OUT

SC1_CV1_DMMI_R_Pr_IN

SC1_CV1_DMMI_G_Y_IN

SC1_CV1_DMMI_B_Pb_IN

FRONT_C_IN

VIF1

VIF2

RF_AGC

SIF1

SIF2

7R57

B23

HERCULES

7217 TDA15021H

SC2_AV3_Y_IN

4R64

4R12

SC2_OUT_SW

AGC

Detect

QSS Mixer AM Demod.

SC2_AV3_C_IN

CVB

SC2_

7219

Sound Traps

S_COMB

Y_IN_1

B13

7206

CVBS1

QSS/FM

29LC4.9A AA 6.

MUX-SYNC INTERFACE

B13

7208

G_OSD

Ver ti cal & East-West Geometry

Sync Sep

H-OSC H-Shift H-Drive

CVBS/Y

B_OSD

B22

Fast Blanking

VDRB

HOUT

PC-VGA/

CVI-2

DIGITAL IO

1Q01

VSYNC

1 2

13 14

HOUT

B18

7L01

7L02

5Q06

5Q21

RGB Matrix

Blue & Black

Strech

Gamma Corr.

cvbs/y

HERCULES

Dig. 2H/4H

Combfilter

Yint

Y Delay Adj.

Chroma

Uint

PAL / N TSC/

SECAM

Decoder &

Vint

Baseband

Delay

RGB/Pr Pb Insert

INSSW3

R/Pr-3

G/Y3

B/Pb-3

77 78 79 80

N.C.

b_IN

SC1_FBL_IN_1

SC1_G_CVI_Y_IN

SC1_R_CVI_Pr_IN

SC1_B_CVI_P

B13

Skin Tone

SAT

U/V Tint

Saturation

SCAVEM

Peaking

on text

SCAVEM

U/V Delay

YUV Interface

YOUT

VOUT

UOUT

74 75 76 70 71 72

YUV

YUV in/out

H/V

VIN

UIN

N.C.

INTF_V_OUT

INTF_U_OUT

INTF_Y_OUT

R_OSD

YIN

Video

Switch

Control

7209

7210

SYNC INTERFACE

7436-2

7436-1

HISTOGRAM

7L03

5Q01

5Q11

5Q23

SCL

SDA

Vsync_SDTV

Hsync_SDTV

GINA|YINA

7L04 MST9883C

30 31

56 57

RINA|Pr

BINA|Pb

H_PC V_PC

A/D

CONV.

FE00

FE01

FE02

SC1_R_CVI_Pr_IN

B13

SC1_G_CVI_Y_IN

B13

SC1_B_CVI_Pb_IN

B13

BINA|Pb

B22

GINA|YINA

B22

B13

RINA|Pr

B22

Vsync_SDTV

B22

B13

B22

Hsync_SDTV

COL_Di(1-7)

COL_YA(1-7)

SC1_CV1_DMMI_R_Pr_IN

B23

SC1_CV1_DMMI_G_Y_IN

B23

SC1_CV1_DMMI_B_Pb_IN

B23

B13 B13 B13

B13 B13

R_SDTV

G_SDTV

B_SDTV

V_PC

H_PC

GINA|YINA

RINA|Pr

BINA|Pb

7E01

7E02

7E03

B10

B19

7E00

2 5

H_HDMI

V_HDMI

R_PR-ADC

G_Y-ADC

B_PB-ADC

10,11

SDRAM

7B01 K4D263238F

SDRAM

1Mx32x4

COLUMBUS

(Dig. PAL/NTC Comb)

7M00 T6TU5XBG

COLUMBUS

DIGITAL COMB

FILTER

7M01 MSM56V16

DRAM

512Kx16x2

SC1_R_CVI_Pr_IN

SC1_G_CVI_Y_IN

SC1_B_CVI_Pb_IN

RGB|CVI_HDA_SEL

7E05

PC_HD_DET

7604

SD_HD_SEL

+2V5_DDR

COL_A

HDMI_VHS

HDMI_VVS

COL_D

AVSYNC

AHSYNC

SOG

R_PR+

G_Y+

B_PB+

FSDATA

FSADDR

COL_Do(1-7)

COL_YB(1-7)

B2,B13 B2,B13 B2,B13

SCALER

7801 GM1501

C14

B14

ANALOG

INPUT PORT

FRAME

STORE

CONTROL

SCALER

GRAPHIC

ZOOM

OUT BLENDER

OSD CONTROLLER

BRIGHTNESS/CONTRAST/HUE/SAT

VIDEO ZOOM

UART

INTERFACE

EXTERNAL

ROM

INTERFACE

SCALER

DISPLAY

TIMING

GEN.

AE16 AF16

AE15 AF15

AE14 AF14

AF12 AF11

AF13 AE12

B11

OCMDATA

OCMADDR

NVM_WP_SCALER

B20

FLASH/CONTROL

7C00 MX29LV040QC

FLASH

ROM

512Kx8

7C01 M24C32

SCL_IO

EEPOM

SDA_IO

4Kx8

EPLD

TXB0TXB0+

TXB1TXB1+

TXB2TXB2+

TXB3- TXB3+

TXBCTXBC+

TXB0+ TXB0TXB1+ TXB1TXB2+ TXB2TXB3+ TXB3- TXBC+ TXBC-

7N02 EP1C12F256C8N

4N03 4N01

4N07 4N05

4N11 4N09

4N15 4N13

4N19 4N17

7N04 THC63LVDF84B

LVD S

INTERFACE

RECEIVER

PROCESSOR

Only for sets with

RGB

EPLD

PIXEL+

B21

PIXEL PLUS

EPLD

LVD SAn LVD SAp

LVD SBn LVD SBp

LVD SCn LVD SCp

LVD SDn LVD SDp

LVD SCLKn LVD SCLKp

7P02 THC63LVD M 83R

LVD S TRANS- MITTER

RGB

LVD S_VCC

LVD SALVD SA+

LVD SBLVD SB+

LVD SCLVD SC+

LVD SDLVD SD+

LVD SCLKLVD SCLK+

LVD S_VCC

LVD SALVD SA+

LVD SBLVD SB+

LVD SCLVD SC+

LVD SDLVD SD+

LVD SCLK- LVD SCLK+

LVD SAn LVD SAp LVD SBn LVD SBp LVD SCn LVD SCp LVD SDn

LVD SDp LVD SCLKn LVD SCLKp

1P07

1P06

1 11 12 13 14 15 16 17 18 19 20 24

TO DISPLAY (LC4.8 LC4.9)TO DISPLAY (LC4.3)

25 26 21 22

1 11 10 12 14 13 15 19 18 20 27 26 28 22 21 23

HDMI/PC-D

HDMI

B12

7D03

1Q03

1 2

4 5 6 7

18 2

9 10 11 12

RX2+

RX2-

RX1+

RX1-

RX0+

RX0-

RXC+

RXC-

SII9993CTG100

96 92

86 84

HDMI

PANELLINK

RECEIVER

33 34

HDMI_Y(0-7)

HDMI_CbCr(1-7)

DVI/HDMI

INPUT PORT

MICRO

CONTROLLER

INTERNAL

RAM

SD_HD_SEL H H H H H H

PC_HD_DET H H H H L H

RGB|CVI_HDA_SEL L H L L L L

HDPCSide-AVEXT2EXT1TV

F_15420_049.eps

251005

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Audio

AUDIO

TUNER & IF

1102 UV1316E/A I H-4

RF IN

RF OUT

Only on

DVB Sets

CINCH ANALOGUE

B23

1R06

CVI-1 AUDIO IN L/R

1R03

AUDIO

IN L/R

AUDIO

IN L/R

1Q03

18 2

HDMI

SIDE AV

AUDIO

L/R IN

1302

1 3 4 6 7

9 10 12

TUNER

SCL

SDA

SC1_COMP_AV1_L_IN

SC1_COMP_AV1_R_IN

AV3 _L

AV3 _R

L_FRONT_IN

R_FRONT_IN

IFOUT

B22

3Q30

3Q31

F108

SEL_IF_SDM

SC2_L_IN

SC2_R_IN

DIGITAL IO

AV3_LEFT

AV3_RIGHT

RX2+

RX2-

RX1+

RX1-

RX0+

RX0-

RXC+

RXC-

IF-TER

1M36

2106

7101

B12

7D03 SII9993CT

97 96 92 91 87 86 84 83

B17

1K04

4110

6104

HDMI

HDMI PANELINK RECEIVER

1106

7D05

12 13

2 1

SIDE CONNECTORS

SC1_COMP_AV1_L_IN

SC1_COMP_AV1_R_IN

SC2_L_IN

SC2_R_IN

AudioIN2L

AudioIN2R

10,11

AV3_HDMI-AUDIO_SEL

FRONT_L_IN

FRONT_R_IN

SIF1

SIF2

HERCULES

7217 TDA15021H

AD Conv.

Std Stereo

Decoder

AUDIO

SELECT

ADC/DAC

QSS Mixer

AM Demod.

QSS/FM

I2S

Processor

AUDIO

CONTROL

Vol/Treb/

Bass

Features

DACs

30LC4.9A AA 6.

SC1_L_RF_OUT

SC1_R_RF_OUT

4212

4211

AUDOUTLSL

AUDOUTLSR

OUT_MUTE

N.C.

AUDIO PROCESSING

OUT_MUTE

POR_AUDIO

B16

4618

AUDIO-L

4619

AUDIO-R

SOUND-ENABLE_1

POR_AUDIO

PROTECT_AUD

7601 TS482ID

OUT_MUTE

7602 74HC08PW

5 9

10 12

7202

MUTE

B16

1J00

TO PDP

SUPPLY

7606

MUTE

SOUND_ENABLE

POWER_DOWN EXT_MUTE

3628

3629

SC2_L_MON_OUT

SC2_R_MON_OUT

SC2_L

SC2_R

(1M52)

+5V

1J04

1M52

B17

B23

B16

AUDIO AMPLIFIER

(CLASS-D)

SOUND-ENABLE

PROT-AUDIOSUPPLY

SIDE CONNECTORS

HP_LOUT

HP_ROUT

N.C.

CINCH ANALOGUE

AUDIO-R

AUDIO-L

POR

1M36

1K04

10 10

11 11

7700 LM393PT

7706-7710

SIDE I/O

SOUND L-HEADPHONE-OUT

SOUND R-HEADPHONE-OUT

DETECT

SOUND ENABLE

7715-7717

AUDIO

SUPPLY

PROT,CIRCUIT

SC2_L_MON_OUT

SC2_R_MON_OUT

7701 TDA8925ST

CLASS_D

AMPLIFIER

DC-PROT

6702

6705

-19-16V

+19-16V

-19-16V

5702

5700

1M02

1010

2 7 5

3 5

1735

1736

TO 1M02

PDP

SUPPLY

1R07

RIGHT

SPEAKER

LEFT

SPEAKER

HEADPHONE

AUDI O

OUT L/R

CONTROL

CONTROL BOARD

LED PANEL

1040

GND

OUT

+5V2-STBY

7052

+5V2-STBY

6070

7051

Channel+

Channel-

Volume+

Volume-

Power

6050

6051

Green

Red

7062

3063

1703 1704 1705 1702 1701 1706

3051

KEYBOARD

LIGHT-SENSOR

3061

+5V2-STBY

LED1

LED2

SIDE CONNECTORS

B17

1K02

(1M01)

1M01

1K00

0345

+3V3STBY

LED_SEL

PC-TV-LED

SYNC INTERFACE

7430

3431

6F00

3432

RES

KEYBOARD

LIGHT_SENSOR

+3v3STBY

+5VSW

ITV_IR_SW_RESET

HERCULES

7217 TDA15021H

120

HERCULES

115

123

107

114

116 119

102

111 122

127

SEL_IF_SDM

4022

SERVICE

SDM

STATUS_1 STATUS_2

EXT_MUTE

SOUND-ENABLE

SC_STANDBY

AV2_DMMI_SW

1202

B15

DC-DC CONVERTER

5756 5754

3755

3759

7754

7758

3750

+12VSW

3758

PANEL-PWR-CTL

SC_STANDBY

B15B6

7755

+3V3STBY

7756

LVDS_VCC

PAN_VCC

+3V3SW

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