Philips LC4.2E, 23PF9956/12, 26PF9956/12, 17PF9946/12, 23PF9946/12 Service Manual

...

Published by BB 0466 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 14491

Copyright 2004 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.

Colour Television Chassis

LC4.2E

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110604

Contents Page Contents Page

1. Technical Specifications, Connections,

and Chassis Overview 2

2. Safety and Maintenance Instructions,

Warnings, and Notes 5

3. Directions for Use 7

4. Mechanical Instructions 8

5. Service Modes, Error Codes, and Faultfinding 11

6. Block Diagrams, Testpoint Overviews,

and Waveforms

Wiring Diagram 19 Block Diagram Tuner and IF Video 20 Block Diagram Scaler 21 Testpoint Overview Tv & Scaler Board 22-23 I2C Overview 24 Supply Voltage Overview 25

7. Circuit Diagrams and PWB Layouts Diagram PWB

Tuner + VIF (Diagram A1) 26 38-47 Hercules (Diagram A2) 27 38-47 Histogram (Diagram A3) 38 38-47 Audio Amplifier (Diagram A5) 29 38-47 TV-Supply (Diagram A6) 30 38-47 Scaler (Diagram A7) 31 38-47 Scaler Interface (Diagram A9) 32 38-47 SDRAM (Diagram A10) 33 38-47 Flash / Control (Diagram A11) 34 38-47 HDMI (Diagram A12) 35 38-47 PCHD-MUX (Diagram A13)36 38-47 Supply (Diagram A14) 37 38-47 Side IO and LKB Panel (Diagram D) 48 49 Rear IO Panel: Scart (17”) (Diagram H1) 50 52 Rear IO Panel: PCHD-IO (17”) (Diagram H2) 51 52 Rear IO Panel: Scart (23/26”) (Diagram H1) 53 55 Rear IO Panel: PCHD-IO (23/26”)(Diagram H2) 54 55 Front IR / LED Panel (Diagram J) 56 56

Pixel Plus Panel: EPLD Control (Diagram PP1) 57 61 Pixel Plus Panel: LVDS In (Diagram PP2) 58 61 Pixel Plus Panel: EPLD I/O (Diagram PP3) 59 61 Pixel Plus Panel: Power Supply (Diagram PP4) 60 61

8. Alignments 63

9. Circuit Descriptions 66 Abbreviation List 72 IC Data Sheets 74

10 Spare Parts List 77 11 Revision List 82

Technical Specifications, Connections, and Chassis Overview

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1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1. Technical Specifications

2. Connections

3. Chassis Overview

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

1.1 Technical Specifications

1.1.1 Vision

Display type : LCD, S-IPS

: 16:9

Screen size : 17 inch (44 cm)

: 23 inch (59 cm) : 26 inch (66 cm)

Resolution (HxV) : 1280(*3)x768 pixels

: WXGA

Contrast ratio : 400:1 Light output : 450 cd/m^2 Viewing angle (HxV) : 176x176 deg. Tuning system : PLL Colour systems : PAL B/G, D/K, I

: SECAM B/G, D/K, L,

Video playback : NTSC 4.43

: NTSC 3.58 : NTSC Play Back : PAL 60 : PAL B/G Play Back : SECAM Play Back

Channel selections : 100 presets

: UVSH

Aerial input : 75 ohm, IEC-type Antenna : 75 ohm, FM Dimensions (WxHxD) in mm : 17 inch: 578x375x240

: 23 inch: 690x433x240 : 26 inch: 788x504x270

1.1.2 Sound

Sound systems : FM/FM (5.5-5.74)

: BI NICAM BG - 2CS

: NICAM B/G (5.5-5.85) : NICAM D/K (6.5-5.85)

(Hung)

: NICAM I (6.0-6.52) : NICAM L (6.5(AM)-

5.85)

Maximum power : 17 inch: 2 x 3 W_rms

: 23 inch: 2 x 5 W_rms : 26 inch: 2 x 5 W_rms

1.1.3 Miscellaneous

Power supply: Mains voltage : 95 - 240 V_ac Mains frequency : 50 / 60 Hz

Ambient conditions:

- Temperature range : +5 to +40 deg. C

- Maximum humidity : 90 % R.H.

Power consumption

- Normal operation : 17 inch: 55 W

: 23 inch: 96 W : 26 inch: 110 W

- Standby : < 3 W

1.2 Connections

1.2.1 Rear Connections

Figure 1-1 Rear connections

Aerial - In

- IEC-type Coax, 75 ohm D

FM Ant

- IEC-type Coax, 75 ohm D

External 1: RGB/YUV - In and CVBS - In/Out

Figure 1-2 SCART connector

1 - Audio - R 0.5 V_rms / 1 kohm k 2 - Audio - R 0.5 V_rms / 10 kohm j 3 - Audio - L 0.5 V_rms / 1 kohm k 4 - Audio - gnd Ground H 5 - Blue - gnd Ground H 6 - Audio - L 0.5 V_rms / 10 kohm j 7 - Blue/U - in 0.7 V_pp / 75 ohm j 8 - CVBS - status 0 - 2 V: INT

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3

9 - Green - gnd Ground H 10 - n.c. 11 - Green/Y - in 0.7 V_pp / 75 ohm j 12 - n.c. 13 - Red - gnd Ground H 14 - FBL - gnd Ground H 15 - Red/V - in 0.7 V_pp / 75 ohm j 16 - Status/FBL 0 - 0.4 V: INT

1 - 3 V: EXT / 75 ohm j 17 - Video Ground H 18 - Video Ground H 19 - CVBS - out 1 V_pp / 75 ohm k 20 - CVBS - in 1 V_pp / 75 ohm j 21 - Shielding Ground H

FM ANT SCART 1 SCART 2 AUDIO OUT DVI-DVGA PC AUDIO INAERIAL IN

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Technical Specifications, Connections, and Chassis Overview

EN 3LC4.2E AA 1.

External 2: RGB/YUV - In and CVBS - In/Out

Figure 1-3 SCART connector

1 - Audio - R 0.5 V_rms / 1 kohm k 2 - Audio - R 0.5 V_rms / 10 kohm j 3 - Audio - L 0.5 V_rms / 1 kohm k 4 - Audio - gnd Ground H 5 - Blue - gnd Ground H 6 - Audio - L 0.5 V_rms / 10 kohm j 7-n.c. j 8 - CVBS - status 0 - 2 V: INT

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3

9 - Green - gnd Ground H 10 - n.c. 11 - n.c. j 12 - n.c. 13 - Red - gnd Ground H 14 - FBL - gnd Ground H 15 - C - in 0.3 V_pp / 75 ohm j 16 - n.c. j 17 - Video Ground H 18 - Video Ground H 19 - CVBS - out 1 V_pp / 75 ohm k 20 - CVBS/Y - in 1 V_pp / 75 ohm j 21 - Shielding Ground H

Audio - out

3 - Audio - R 0.5 V_rms / 1 kohm kj 2 - Audio - L 0.5 V_rms / 1 kohm kj

VGA

Figure 1-4 VGA Connector

1 - Red 0.7 V_pp / 75 ohm j 2 - Green 0.7 V_pp / 75 ohm j 3 - Blue 0.7 V_pp / 75 ohm j 4 - Ground H 5 - Ground H 6 - Ground H 7 - Ground H 8 - Ground H 9 - 5V_DC +5 V_dc j 10 - Ground H 11 - Ground H 12 - DDC_SDA jk 13 - H-sync 0 - 5 V j 14 - V-sync 0 - 5 V j 15 - DDC_SCL j

DVI (for 23 and 26 inch models)

Figure 1-5 DVI connector

1-RX2- j 2-RX2+ j 3 - Ground GND H 4- n.c. 5- n.c.

6 - SCL_DVI k 7 - SDA_DVI jk 8- n.c. 9-RX1- j 10 - RX1+ j 11 - Ground GND H 12 - n.c. 13 - n.c. 14 - +5V 15 - Ground GND H 16 - + 5V Hot Plug 17 - RX0- j 18 - RX0+ j 19 - Ground GND H 20 - n.c. 21 - n.c. 22 - Ground GND H 23 - RXC+ j 24 - RXC- j C5 - Ground GND H

PC Audio - in

3 - Audio - R 0.5 V_rms / 1 kohm kq 2 - Audio - L 0.5 V_rms / 1 kohm kq

1.2.2 Side connections

Figure 1-6 Side connections

Hosiden: SVHS - In

1 - Y Ground H 2 - C Ground H 3 - Y 1 Vpp / 75 ohm j 4 - C 0.3 Vpp / 75 ohm j

Mini Jack: Audio - in

2 - Audio - L 0.5 Vrms / 10 kohm jq 3 - Audio - R 0.5 Vrms / 10 kohm jq

Mini Jack: Headphone - Out

- Headphone 32 - 600 ohm / 10 mW ot

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S-VIDEO

AUDIO IN

HEADPHONE

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Technical Specifications, Connections, and Chassis Overview

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Figure 1-7 Chassis Overview

SIDE IO PANEL

FRONT LED

PANEL

REAR I/O

CINCH PANEL

TV & SCALER

BOARD

LCD PANEL

POWER SUPPLY UNIT

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PIXEL PLUS PANEL

Safety Instructions, Warnings, and Notes

EN 5LC4.2E AA 2.

2. Safety Instructions, Warnings, and Notes

2.1 Safety Instructions

Safety regulations require that during a repair:

• Connect the set to the Mains 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 lead for external damage.

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

• Check the electrical DC resistance between the Mains plug

and the secondary side (only for sets which have a Mains isolated power supply):

1. Unplug the Mains cord and connect a wire between the

two pins of the Mains plug.

2. Set the Mains switch to the "on" position (keep the

Mains cord unplugged!).

3. Measure the resistance value between the pins of the

Mains 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 plug.

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

2.2 Warnings

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

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

– Wristband tester 4822 344 13999.

• Be careful during measurements in the high voltage

section.

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

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

2.3 Notes

2.3.1 General

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

Figure 2-1 Dolby PL Symbol

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

-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 Electrical Replacement 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, it is essential when removing an (LF)BGA, 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 chance 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 shown to result in problems during re-soldering.

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Safety Instructions, Warnings, and Notes

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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. To reflow the solder, apply a temperature profile according to the IC data sheet. 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: http://www.atyourservice.ce.philips.com

(needs subscription). After login, select “Magazine”, then go to “Workshop Information”. Here you will find Information on how to deal with BGA-ICs.

2.3.4 Lead Free Solder

Some PWBs in this chassis are “lead-free prepared”. This is indicated on the PWB by the PHILIPS lead-free logo (either by a service-printing or by a sticker). It does not mean that leadfree solder is actually used!

Figure 2-2 Lead-free logo

2.3.5 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 - 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.

Directions for Use

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3. Directions for Use

You can download this information from the following website:

http://www.philips.com/support

Mechanical Instructions

EN 8 LC4.2E AA4.

4. Mechanical Instructions

Index of this chapter:

1. Service Position

2. Rear Cover Removal

3. Power Supply Unit Removal

4. TV & Scaler Board Removal

5. I/O Panel Removal

6. Side I/O & Keyboard Panel and Front LED Panel Removal

7. Pixel Plus Panel Removal

8. Exchanging the LCD Panel

9. Re-assembly

Note: Figures below can deviate from the actual situation, due to different set executions.

Note: To diagnose the set with ComPair it is not needed to open the set entirely.

1. Manually unlock and remove the cover cap (1). See figure

“TV set rear view”.

2. Break away the protective plate (2) at the I/O panel bracket

to get access to the needed plugs. See figure “Protective plate”.

Figure 4-1 Protective plate

4.1 Service Position

Figure 4-2 TV set rear view

Figure 4-3 TV stand removal

1. Carefully pull upwards the cover plate (2) (from it’s left side) to unlock it (3) and remove the plate from the stand.

2. Unplug the AC power and the antenna cables.

3. Be sure to remove the coin slotted mounting screw (4) from

the stand.

4. Carefully lift the TV from the swivel base (it uses a vertical sliding mechanism).

5. Place the TV upside down on a tabletop (use a protection sheet or foam bars). Take care, that this is flat and free from obstacles like screws, to prevent damaging the fragile LCD screen.

4.1.1 Foam Bars

Figure 4-4 Foam bars

The foam bars (order code 3122 785 90580) can be used for all types and sizes of Flat TVs. By laying the plasma or LCD TV flat 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 easily monitor the screen.

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Mechanical Instructions

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4.2 Rear Cover Removal

Figure 4-5 Rear cover removal

1. Manually unlock and remove the top cover cap (5). See Figure: “TV set rear view”.

2. Make sure all power-, audio-, video- and coax- cables are unplugged.

3. Remove all Torx screws (1) around the edges of the rear cover.

4. Remove the four silver coloured Torx screws (2) around the stand holder. See figure “Rear cover removal”.

5. Carefully use a flat screwdriver to release the clamps (3). See figure “Rear cover removal”.

6. Remove the rear cover and store it in a safe place.

Note: avoid holding the button-area during removal (it can be easily damaged).

4.3 Power Supply Unit Removal

Figure 4-6 Power supply unit

1. Disconnect all cables from the Power supply unit.

2. Remove all mounting screws (1) from the Power supply

unit.

3. Take out the Power supply unit.

4.4 TV & Scaler Board Removal

Figure 4-7 : TV & Scaler board shield removal

Figure 4-8 : TV & Scaler board removal

1. Disconnect all cables from the TV & Scaler board.

2. Remove all shield mounting screws (1) and remove the

shield.

3. Remove the screw from the grounding cable (2).

4. Remove the mounting screw (3) and remove the board.

4.5 I/O Panel Removal

Figure 4-9 I/O panel removal

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Mechanical Instructions

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1. Release the two clamps (1) at the I/O panel bracket. Carefully pull the bracket in the direction (2), as shown at the figure “I/O panel removal”, and remove it.

2. Disconnect all cables from the I/O panel.

3. Remove all mounting screws from the I/O panel (3).

4. Take out the I/O panel.

4.6 Side I/O & Keyboard Panel and Front LED Panel Removal

Figure 4-10 Side I/O & Keyboard panel and

Front LED panel removal

1. Release the clamp (1) and take out the Front LED panel.

2. Disconnect the cable (2) from the Side I/O & Keyboard

panel.

3. Remove all mounting screws (3) from the Side I/O &

Keyboard panel bracket.

4. Unlock this unit by shifting it to the outside direction of the

monitor.

5. Release the clamp (4) and take out the Side I/O &

Keyboard panel from the bracket.

4.7 Pixel Plus Panel Removal

Figure 4-11 Pixel Plus panel removal

1. Disconnect all cables from the Pixel Plus panel.

2. Remove all mounting screws from the Pixel Plus panel.

3. Take out the Pixel Plus panel.

4.8 Exchanging the LCD Panel

Figure 4-12 Exchanging the LCD panel

1. Disconnect all cables from the LCD Panel.

2. Remove all mounting screws (1) from the metal cover.

3. Lift and take off the metal cover.

4. Now you can exchange the LCD panel.

4.9 Re-Assembly

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

Notes:

• Do not forget to replace the ground cable of the TV & Scaler board, while mounting the screw at the board topside. See figure “TV & Scaler board removal”.

• Make sure the ferrite ring (1) is properly tightened to the clip (this is valid only for 26 inch sets).

Figure 4-13 Ferrite ring

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Service Modes, Error Codes, and Fault Finding

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5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

1. Test Points

2. Service Modes

3. Problems and Solving Tips (related to CSM)

4. ComPair

5. Error Codes

6. The Blinking LED Procedure

7. Fault Finding and Repair Tips

8. Power Supply

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. These test points are specifically mentioned in the service manual as “half moons” with a dot in the centre. 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 abilities 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").

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).

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.

Figure 5-1 E Service jumpers

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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 Alignment Mode.

Figure 5-2 SDM 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 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.

Figure 5-3 SAM menu

Menu explanation

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

2. AAAABCD-X.Y/ EEEEEE F.GG. This is the software identification of the main microprocessor followed by the software identification for the scaler IC:

– A= the project name (LC42). – 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).

– EEEEEE= the scaler sw cluster – F= the main sw version no. – GG= the sub-version no.

3. SAM. Indication of the Service Alignment Mode.

4. Error Buffer. Shows all errors detected since the last time

the buffer was erased. Five errors possible.

5. Option Bytes. Used to set the option bytes. See “Options” in the Alignments section for a detailed description. Seven codes are possible.

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

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

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

9. White Tone. Used to align the white tone. See “White Tone” in the Alignments section for a detailed description.

10. Audio. No audio alignment is necessary for this television set.

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OP 000 057 140 032 120 128 000

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. Clear Clear ?

. Options . Tuner . White Tone

. Audio . NVM Editor . SC NVM Editor

. ComPair Mode On

Service Modes, Error Codes, and Fault Finding

EN 13LC4.2E AA 5.

11. NVM Editor. Can be used to change the NVM data in the television set. See table “NVM data” further on.

12. SC NVM Editor. Can be used to edit Scaler NVM.

13. 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 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:

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.

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,

1 00022 LC42EP1 0.08/S42GV1 0.90 CSM

2 CODES 0 0 0 0 0 3 OP 000 057 140 032 120 128 000

5 6 NOT TUNED

7 PAL

8 STEREO

9 CO 50 CL 50 BR 50 0 AVL Off

E_14490_053.eps

230404

Service Modes, Error Codes, and Fault Finding

EN 14 LC4.2E AA5.

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.

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 COLOUR.

6. Press the MENU RIGHT key to increase the COLOUR

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.

5.4 ComPair

5.4.1 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: 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. 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. 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 SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away.

5.4.2 Specifications

ComPair consists of a Windows based faultfinding program and an interface box between PC and the (defective) product. The ComPair interface box is connected to the PC via a serial or RS232 cable. In this chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector.

The ComPair faultfinding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways:

• Automatic (by communication with the television): ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I2C level. ComPair can access the I2C bus of the television. ComPair can send and receive I2C commands to the micro controller of the television. In this way, it is possible for ComPair to

Service Modes, Error Codes, and Fault Finding

EN 15LC4.2E AA 5.

communicate (read and write) to devices on the I2C busses 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 extend. 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 waveform 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.

Beside fault finding, ComPair provides some additional features like:

• Up- or downloading of pre-sets.

• Managing of pre-set lists.

• If both ComPair and SearchMan (Electronic Service

Manual) are installed, all the schematics and the PWBs of the set are available by clicking on the appropriate hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Mono-carrier. – Click on the 'Panel' hyperlink to automatically show the

PWB with a highlighted capacitor C2568.

– Click on the 'Schematic' hyperlink to automatically

show the position of the highlighted capacitor.

5.4.3 How To Connect

1. First, install the ComPair Browser software (see the Quick Reference Card for installation instructions).

2. Connect the RS232 interface cable between a free serial (COM) port of your PC and the PC connector (marked with 'PC') of the ComPair interface.

3. Connect the mains adapter to the supply connector (marked with 'POWER 9V DC') of the ComPair interface.

4. Switch the ComPair interface “off”.

5. Switch the television set “off” with the mains switch.

6. Connect the ComPair interface cable with the connector on

the rear side of the ComPair interface (marked with 'I2C') and the additional ComPair interface cable. Connect the other side of the additional ComPair interface cable with the ComPair (or Service) connector at the rear side of the TV.

7. Plug the mains adapter in a mains outlet, and switch the interface “on”. The green and red LEDs light up together. The red LED extinguishes after approx. 1 second while the green LED remains lit.

8. Start the ComPair program and read the 'Introduction' chapter.

Figure 5-5 ComPair Interface connection

5.4.4 How To Order

ComPair order codes (EU/AP/LATAM):

• Starter kit ComPair32/SearchMan32 software and ComPair interface (excl. transformer): 3122 785 90450.

• ComPair interface (excluding 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).

• SearchMan32 CD (update): 3122 785 60080 (year 2002), 3122 785 60120 (year 2003), 3122 785 60130 (year 2004).

• ComPair interface cable: 3122 785 90004.

• ComPair firmware upgrade IC: 3122 785 90510.

• Transformer (non-UK): 4822 727 21632.

• Transformer UK: 4822 727 21633.

• Additional ComPair interface cable: 3139 131 0379.

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

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.

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.

E_06532_008.eps

190204

PC VCR I2CPower

9V DC

TO SERVICE CONNECTOR

Service Modes, Error Codes, and Fault Finding

EN 16 LC4.2E AA5.

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

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 starts 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 at 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.

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. 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 via the mains switch

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 mains switch

5. When the set has started up the P+/Ch+ button can be

released and the short circuit of the SDM jumpers can be removed.

6. The red LED will be on continuously to indicate that the download is initiated (normally when SDM is activated the red LED will start with the Blinking LED sequence).

7. Wait +/- 30 Seconds (time needed to download default values to the NVM)

Result: The set is in SDM, the NVM is loaded with default values and the blinking LED is not activated (The blinking LED is not activated in this case to show that the download has been performed), the LED will be on.

5.7.3 Tuner and IF

No Picture in RF mode

1. Check whether picture is present in AV. If not, go to Video processing troubleshooting section.

2. If present, check that the Option settings are correct.

3. Check that all supply voltages are present.

4. Check if I2C lines are working correctly (3.3V).

5. Manually store a known channel and check if there is IF

output at Tuner pin 11.

6. Feed in 105 dBuV at Tuner pin 11 and check whether there is RGB output from Video Processing IC. If yes, Tuner may be defected. Change 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

1. Check whether the Service jumper (#4022, 08 05 size) is present. If yes, remove it.

2. Check whether SEL_IF pin is according to what is specified.

Error Device Error description Check item Diagram

0 Not applicable No Error

1 Not applicable - - -

2 Not applicable - - -

3 Not applicable - - -

4 GM1501 I2C error while communicating

with the Genesis Scaler and/or Flash-ROM is faulty/ empty

7401 7530

A7A11

5 Not applicable +5v protection 7930 A6

6 I2C bus General I2C error 7011, 3088,

3096

7 Not applicable - - -

8 M24C32 I2C error while communicating

with the Scaler EEPROM

7531 A11

9 M24C16 I2C error while communicating

with the EEPROM

7099 A2

10 Tuner I2C error while communicating

with the PLL tuner

1302, 3302, 3303, 3327

11 Not applicable - - -

12 Not applicable - - -

13 Not applicable - - -

14 K4D263238M Read-write error with the

Scaler SDRAM

7501 A10

15 TDA9178T/N1 I2C error while communicating

with Histogram

7560 A3

16 EPIC12F I2C error while communicating

with EPLD on Pixel Plus panel

7101 PP1

Service Modes, Error Codes, and Fault Finding

EN 17LC4.2E AA 5.

5.7.4 Video Processing

No power

1. Check +12 V and 3V3 at position 1910.

2. If no supply, check the connector 1910.

3. If it is correct, check the power supply board.

Power supply is correct but no green light

1. Check the two connectors 1005 and 1601, if they are properly inserted.

2. If they are inserted correctly, check if the 3V3 is present.

No picture display

1. Check the RGB signal.

2. If it is present, check 3-IC7016 (NE555).

3. If it has output, the problem is in SCALER part.

4. Otherwise, check H-out on pin 2 of NE555. If the input

signal of pin2 is present, but no output, the IC is failed.

Note:

• If the H-out (pin 67) doesn’t have signal or the level is low, check the output of NE555 (pin 3) during start up.

• If the H-out (pin 67) has a signal (or has a signal for a very short time), change IC7016 (NE555).

No TV but PC is present

1. Check if HSYNC and VSYNC are present at PIN 3 of 7071 and 7015.

2. If they are present, check RGB output.

3. If there is no RGB output, the IC TDA120xx can be failed.

Comb Filter not working

1. Check the option bit 5 in SAM.

2. Check NVM setting. Address 1229 is 0000.

5.7.5 Power Supply

Check fuses

This power supply contains three fuses. One is near the mains inlet (marked on the board as 1102) and two other are near the output connectors (marked 1610 and 1660).

1. Check with power supply in off state by means of ohmic measurement.

2. Fuse 1102 may open in case of severe lightning strikes and/or failures in the power supply. Despite the fact, that this fuse is mounted in a fuse holder and the marking text on the board, it is not meant to be field replaceable.

3. Fuses 1610 and 1660 may open in case a severe overload of the 12 V outputs. Replacement of the power supply is needed, but not before the cause of the overload conditions is resolved.

Standby mode

1. Apply a 12 ohm load resistor of sufficient power rating to all outputs (+3 V3, +12 VAL, +12 VL and +24 V). Connect the STBY pin to GND.

2. Over an input voltage range of 90 V_ac to 264 V_ac only the +3 V3 output shall be up and within regulation (±5%). The voltage on the POWER DOWN pin shall be < 0.3 V at an input voltage below 160 V_ac, and 3.3 V ±10% at an input voltage higher than 240 V_ac.

Normal mode:

1. Apply a 12 ohm load resistor of sufficient power rating to all outputs (+3 V3, +12 VAL, +12 VL and +24 V). Connect the STBY pin to the +3 V3 output.

2. Over an input voltage range of 90 V _ac to 264 V_ac all outputs shall be up and within regulation (±5%). The voltage on the POWER DOWN pin shall be 3.3 V ±10% over the entire input voltage range. Additionally, the voltage on the big capacitor mounted flat on the PCB shall be 400 V ±10%

Service Modes, Error Codes, and Fault Finding

EN 18 LC4.2E AA5.

Personal Notes:

E_06532_012.eps

060804

Block Diagrams, Testpoint Overviews, and Waveforms

19LC4.2E AA 6.

6. Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram

12P

E_14490_101.eps

030804

Left

Speaker

Rigth

Speaker

12P

1200

14P

1520

1910

20P

1403

45P

1005

45P

1601

1103 1698

1704

POWER

1001

1302

13034P1304

LCD-TV SCALER

SIDE I/O & LKB

FRONT IR/LED

REAR I/O SCART/PCHD

LCD SCREEN LVDS CONNECTION

LVDS OUTPUT

SERVICE COMPAIR

CONNECTION

20P

1104

INVERTER

1540

20P

1301

Wiring Diagram 26" LVDS Connection

BACK

LIGHT

CONNECTION

LCD SCREEN

PIXEL PLUS

PANEL

22P

1003

22P

1002

1001

1409

20LC4.2E AA 6.

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Tuner and IF Video

1302

+5VSW

6,7

A 3

TUNER +VIF

+VTUN

Sound Traps

VIF1

VIF2

RF_AGC

SIF2

SIF1

7011 - IF

A 4

QSS Mixer/ AM Demod.

7316

AUDOUTLSR

62,63

49,50

34,35

56,57

AUDIO AMPLIFIER

HISTOGRAM

AV3

SVHS 2

14,16

SIDE AV

VIDEO

7376-B 7377-B

53,54

TO/FROM

1200 OF

POWER SUPPY

UNIT

HP_LROUT

SVHS_AV2_Y_CVBS_IN

SVHS_C_IN

14,16

10,12

1104

AUDIO-OUT

SCART 2

SCART 1

R-Out

R-In

L-Out

L-In

B-In

Status

G-In

R-In

FBL-In

TER-Out

CVBS-In

R-Out

L-Out

R-In

L-In

Status

P50

C-In

MON-Out

Y/CVBS-In

Const_LR_OUT

SC1_LR_RF-OUT

SC2_LR_MON_OUT

STATUS_1

SC2_CVBS_MON_OUT

SC1_COMP_B_U_IN

SC2_LR_IN

SC1_COMP_AV1_LR_IN

SC2_Y_IN

SC1_CVBS_IN

P50_LINE_ITV_IR_SW

SCV1_CVBS_RF_OUT

SC1_FBL_IN

STATUS_2

SC2_C_IN

7119

1301

7371

7910

1910

3910

TV SUPPLY

A 7

SC1_COMP_R_V_IN

SC1_FBL_IN

SSIF(Tuner FM) 33

SDA

SCL

SEL_IF

SSIF

OSC

REF

2931

+5VSW

VCC

7930

3931

6930

5931

? ?

LEFT

RIGHT

1704

7710

SOUND_ENABLE

EXT_MUTE

7706

1 2

POWER_DOWN

OUT_MUTE

3732

+3V3STBY

QSS/FM

AGC

Detect

CVBS1

Input

sw.

INA..D

cvbs/y

Output

sw.

CS1A..D

cvbs

1328

1330

3311

6323

3323

+5VSW

7320

4334

2321

4327

4331

4333

Dig. 2H/4H Combfilter

Y Delay Adj.

PAL /NT SC /

SECAM

Decoder &

Baseband

Delay

int

Chroma

int

RGB/YPRPB Insert

YUV Interface

78 79 8077 74 75 76

Pix Improvement

(Histogram)

7560

71 72

Peaking SCAVEM U/V Delay

YUV IN/OUT

Skin Tone

U/V Tint Saturation

RGB Matrix Blue & Black

Stretch

Gamma Corr.

YUV

SAT

SCAVEM

on Text

RGB Matrix

Blue & Black

Stretch

Gamma Corr.

G_OSD

R_OSD

B_OSD

Fast Blanking

CON BRI

H/V

Sync Sep

H-OSC H-Shift H-Drive

Vertical & EastWest Geometry

H/V

HOUT

FB/SC

VDRB

VDRA

YOUT

UOUT

VOUT

VIN

UIN

YIN

R/Pr-3

INSSW3

G/Y3

B/Pb-3

SC1_COMP_AV1_G_Y_CVBS_IN

SC1_COMP_B_U_IN

7013

7014

7012

R_SDTV

G_SDTV

B_SDTV

SCL

SDA

161719

1411

+8VSW_2

7138

25,28

43,45

37,39

SC1_COMP_AV1_G_Y_CVBS_IN

SC1_COMP_R_V_IN

18,20

24,27

A 3H1

SC2_C_IN

SC2_CVBS_MON_OUT

SC1_CVBS_IN

SC2_Y_IN

SVHS_AV2_Y_CVBS_IN

SVHS_C_IN

cvbs/y

CVBS/Y-X

C-X

CVBS/Y-X

C-X

P50

STATUS_2

STATUS_1

AD Conv

Std Stereo

Decoder

Audio Select

ADC/DAC

Audio

Control

Vol/T reb/

Bass

Features

DACs

I2S Proc

QSS/FM

SC1_COMP_AV1_LR_IN

Const_LR_OUT

SC1_LR_RF-OUT

SC2_LR_IN

SC2_LR_MON_OUT

19,22

26,28

7,9

1,3

18,21

SC1_COMP_AV1_LR_IN

Const_LR_OUT

SC1_LR_RF_OUT

SC2_LR_IN

SC2_LR_MON_OUT

7370

SVHS_LR_IN

AudioIN2LR

AUDOUTLSL

36,37

1:1

7372

7709

MUTE

VCC

7708

7376-A

7377-A

ST-BY

4 5

STANDBY

3706

37467703-1

3706

HP_DET_R_DC

AUD-SUP

ST_BY

7703-2

3747

HP_DET_IN

HP_LOUT

AUDOUTLSR

AUDOUTLSL

AUD-SUP

7740

+3V3STBY

HP_ROUT

AUD-SUP

5958

+12VSW

+12VUNREG

+3V3STBY

AUD-SUP

6910

+VTUN

6911

5920

+8VSW_TV

2921

7920

131113

SC2_CVBS_RF_OUT

SVHS_LR_IN

HP_DET_IN

HP_DET_R_DC

HP_LROUT

SVHS_LR_IN

HP_DET_IN

HP_DET_R_DC

34,36

44,45

10,12

1,2

10,12

HISTORGRAM

VCC

DISC

CTRL

RES

OUT

THR

2028

7018

3021

2062

7016#

VCC

DISC

CTRL

RES

OUT

THR

2021

3057

2042

7015#

VCC

DISC

CTRL

RES

OUT

THR

2045

3025

2034

7017#

2020

H_CS_SDTV

7019

2022

V_SDTV

SANDCASTLE

+5VSW

# = NE555 TIMER

HEAD-

PHONE

3010

HISTOGRAM

3058

SANDCASTLE

HERCULES

A13

A12

A14

10051005

1005

17312

POWER_DOWN

STANDBY

BU_LIGHT_ADJ1

LAMP_ON-OFF

A2,A7

+5VSW+5VSW

1103

A2 A2

7011 - SOUND

SYSTEM 7011

PAL-MULTI/SECAM TDA12021

NTSC TDA12001

CHINA/NTSC-AP TDA12011

HERCULES

6,15

COMPAIR

1303

Y_NOTCH

REAR IO SCART

5560

2561

7562

+12VSW

F306

F305

F903

F958

F915

F912

F906

F905

F913

F705

F702

F701

F706

F707

F708

I341

E_14490_018.eps

040804

ERR 10

ERR

Block Diagrams, Testpoint Overviews, and Waveforms

21LC4.2E AA 6.

Block Diagram Scaler

ADDRESS

1511

PC-IN

3,11,19,22

DDC NVM

7693

DDC_5V

1309~13

KEYBOARD

6541

6540

LIGHT-SENSOR-SDM

PC-TV-LED

LED-SEL

RXC+IN

RXC-IN

RX1+IN

RX0+IN

DVI-IN

PC-AUDIO-IN

SIDE AV

PC_AUDIO_L

PC_AUDIO_R

1698

HOT_PLUG

+3V3STBY

+5VSWI

3682

6692

6691

5692

3691

DDC_5V

3710

RX1-IN

SDA_DVI

SCL_DVI

DVI NVM

7694

RX2+IN

RX2-IN

RED_PR

GRN_Y

BLU_PB

PC_HD_DET+

UART_TX

UART_RX

RES

+3V3STBY

RX0-IN

1104

1301

3489

23489

1540

7543

FRONT

CONTROL

3709

7605

H_CS_SDTV

V_SDTV

SD_HD_SEL

7604

23 4

11 10

13 12

69 8

9,11

6604

PC_HD_DET-

PC_HD_DET+

6605

PC_HD_DET+

+3V3STBY

+5VSWI

HD_FILTER

7604-5

7604-6

7607

R_PR+

G_Y+

B_PB+

R_SDTV

G_SDTV

B_SDTV

RED_PR

GRN_Y

BLU_PB

H_CS

PC_HD_DET

R_PR-

G_Y-

B_PB-

RED_PR

GRN_Y

BLU_PB

AudioIN2L

AudioIN2R

4836

4838

u-Processor

KEYBOARD

STATU S_ 2

STATU S_ 1

LIGHT-SENSOR-SDM

SEL_IF

SOUND_ENABLE

PC-TV-LED

SCL

SDA

EXT_MUTE

TV_SC_COM

TV_IRQ

NVM

NVM_WP

4022

SDM PINS

7099

HERCULES

7011

A12

A13

PCHD-MUX

LED-SEL

7640

6640

3640

+3V3STBY

A 2

HERCULES

A13

SOG

7606

9, 17, 19

PC_HD_SEL

SD_HD_SEL

A 7

PC_HD_SEL

7607 L H PIN SD_HD_SEL SDTV HDTV 22 PC_HD_SEL ENABLE DISABLE 9

SDRAM

DATA

UART_TX

UART_RX

PC_HD_DETA13

HOT_PLUG

P50_LINE_ITV_IR_SW

104

108

109

107

111

114

102

120

115

116

119

123

STANDBY

122

OSC

REF

2956

+5VSWI

VCC

7952

3951//52

6951

5953

3954

5952

2957

SUPPLY

A14

2953

+12VSW

7954

PANEL-PWR-CTL

3955

5959

3958

7955

+3V3STBY

PAN_ VCC

2960

7953

2960

7995

+1V8

5997

5996

5998

6995

+3V3STBY

+1V8_DVI

+1V8_ADC

+1V8_CORE

2994

7992

5994

+2V5_DDR

A10

SDRAM

7501

SCALER

A13

127

+3V3STBY

7070

+1V8_B

3,93,96

100,117,118,124

7001,7003

+3V3STBY

+1V8_A

DECDIG

+5VSW

4,5,7,9,88,90,94

15,69,82

P50

126

7075

P50

1601

POWER_DOWN

128

POWER_DOWN

1302

LKB 5x

+5VSWI

TV_SC_COM

Y_NOTCH

2488

1401

2487

+3V3_PLL

PCHD-IO

2007

1001

2006

E_14490_102.eps

040804

F625

F624

F613

I996

F954

F960

I992

F615

F617

F626

ERR 14

ERR

FRAME

STORE

CONTROL

EXT. ROM

INTER-

FACE

DISPLAY

LVDS INTERFACE RECEIVER

TIMING

GEN

DVI/HDMI

INPUT PORT

ANALOG

INPUT PORT

1,2

3,4,5

7 8

10,11

1403

14 15

13,16

TXB0-

TXBC+

TXB3+

TXB1-

TXB1+

TXBC-

TXB2-

TXB2+

TXB0+

TXB3-

GRAPHIC

ZOOM

VIDEO ZOOM

OSD CONTROLLER

OUT BLENDER

20p

BRIGHTNESS/CONTRAST/HUE/SAT

INTERNAL

RAM

UART

INTERFACE

MICRO-

CONTROLLER

PAN_VCC

VCC

RESET

GND

7532

2,3

+3V3STBY

1,2

3,4,5

7 8

10,11

1403

TO LCD PANEL (LVDS)

14 15

13,16

TXB0-

TXBC+

TXB3+

TXB1-

TXB1+

TXBC-

TXB2-

TXB2+

TXB0+

TXB3-

PAN_ V CC

3547-2

3551

(1)

3552

(2)

3547-3

3546-2

3546-3

+3V3_IO

SCREEN SIZE

(1)

PRESENT ONLY FOR 23"

(2)

PRESENT ONLY FOR 26"

NVM

NVM-WP

A11

FLASH/CONTROL

SCL_IO

SDA_IO

7531

FLASH

ROM

1304

UART

FOR SERVICE

A 3A 1

UART_TX

UART_RX

A13

SCL

SDA

TV_IRQ

PC_HDMI-AUDIO_SEL

A12

SD_HD_SEL

PANEL-PWR-CTL

A14

A13

7449*

3444*

3452*

BU_LIGHT_ADJ1

OCM_TIMER1

OCM_OD0

OCM_OD1

A13

HD_FILTER

PWM1

LAMP_ON-OFF

PBIAS

PC_HD_SEL

A13

GPIO_G09_B0

GPIO_G09_B4

GPIO_G07_B5

VGA_SCL

VGA_SDA

GPIO_G07_B0

PPWR

OCM_INT1

GPIO_G09_B1

GPI_G09_B3

GPIO_16

RESET

OCMADDR1

OCMADDR2

MSTR_SCL

MSTR_SDA

GPIO_G09_B4

7401

GM1501

SXGA DISPLAY CONTROLLER

#RESET

A12

GPIO_G07_B6

GPIO_G07_B2

SCL_IO

+3V3STBY

PIXEL+_SYNC

PIXEL+_RESET

+5V+SWI

SDA_IO

1409 1001

1002

A 9

SCALER INTERFACE

PP4

POWER SUPPLY

PP2

LVDS IN

PP1

EPLD CONTROL

4445**

** FOR 17" ONLY

* FOR 23" & 26"

ADDRESS

DATA

ADDRESS

DATA

9+5

+3V3_IN

SYNC_OUT

RESET_IN

SCL

SDA

7505

7501

LF15ABDT

7504

SI2307D5

EPLD FLASH

ROM

CLOCK

GENERATOR

LVDS TRANSMITTER

EPLD

(PIXEL+

PROC)

SYNC_OUT

RESET_IN

+5V

+3V3

+1V1

SCL

SDA

F503

PP3

EPLD I/O

7201 THC63LVDF84B

7101 EP1C12F256C8

7403 THC63LVDM83R

7102 EPCS4518

LVDS_SIGNAL_IN

7108 OC

FOR SETS WITHOUT

PIXEL+

FOR SETS

WITH

PIXEL+

TO LVDS

CONNECTOR

LCD PANEL

PIXEL+ PANE L

F521

22LC4.2E AA 6.

Block Diagrams, Testpoint Overviews, and Waveforms

Testpoint Overview TV & Scaler Board (Bottom Side)

E_14490_021.eps

030604

SERVICE TESTPOINT

3139 123 5804.2

F001 B4 F002 C3 F003 D2 F004 C5 F005 C4 F006 B3 F007 B4 F008 B3 F009 A3 F010 B3 F011 B3 F012 A3 F013 C3 F014 C3

F018 C4 F019 B4 F020 D4 F021 B4 F022 A4 F023 B4 F024 D3 F025 D3 F026 D4 F027 A2 F028 C4 F029 C4 F030 C3 F031 C3

F032 C3 F033 D4 F034 D3 F035 D4 F036 C4 F037 A2 F038 D4 F039 A2 F040 D4 F041 D4 F042 C5 F043 C4 F044 C4 F045 D4

F046 D3 F047 D3 F048 D4 F049 D4 F050 C4 F051 D3 F052 B3 F053 D3 F055 D4 F056 B4 F057 B3 F058 D4 F059 A4 F060 B5

F061 D5 F062 D5 F063 C4 F064 A3 F067 D4 F068 C5 F069 C5 F070 B5 F071 B5 F072 D4 F073 B5 F074 B4 F075 D4 F076 B4

F090 C3 F093 C2 F094 C4 F095 D5 F096 D5 F097 C4 F099 C2 F301 D3 F302 D1 F303 D1 F305 C2 F306 C1 F307 C1 F308 D1

F309 B2 F310 D3 F311 C3 F312 D2 F313 D2 F314 D2 F315 D2 F316 C2 F317 C2 F401 C6 F402 A5 F403 A5 F404 A5 F405 A8

F406 A8 F411 A8 F412 A8 F413 A8 F414 A8 F415 A8 F416 A8 F417 A8 F418 A8 F434 A6 F436 A6 F437 A6 F444 B7 F460 C6

F461 C7 F462 C6 F463 C6 F465 C5 F466 C6 F470 C5 F478 A7 F482 A6 F486 B6 F501 B8 F530 A5 F531 B6 F532 B6 F533 B6

F534 C5 F535 B6 F536 A6 F537 A6 F538 A5 F539 A5 F540 A6 F541 A6 F580 A3 F584 B4 F587 A4 F588 A4 F590 A2 F601 D7

F602 C6 F603 D6 F604 C5 F605 C5 F606 D7 F607 C5 F608 D6 F609 D7 F610 D7 F612 C6 F613 C6 F615 C5 F617 C6 F618 C6

F619 C7 F620 C6 F621 C7 F622 C7 F624 C5 F625 D5 F626 D5 F627 D7 F628 C7 F629 D7 F630 C7 F631 D7 F632 D7 F633 D7

F634 D5 F635 D5 F636 D7 F637 C5 F638 D7 F639 D7 F640 D6 F641 D6 F642 D6 F643 D5 F644 C5 F645 D5 F646 D6 F647 D6

F701 A2 F702 A1 F705 A2 F706 A2 F707 A2 F708 A2 F710 D4 F711 B3 F712 B4 F713 A1 F714 A2 F715 A2 F801 D8 F802 D8

F803 D8 F804 C8 F805 D8 F806 C7 F807 C7 F808 C8 F809 C8 F810 D7 F811 C7 F812 D8 F813 D8 F814 D8 F815 D8 F816 D8

F817 D8 F818 D8 F819 C8 F820 D8 F821 D8 F822 D8 F823 D8 F824 D8 F826 C7 F827 C7 F828 D7 F829 C7 F830 D7 F902 A1

F903 A2 F904 A2 F905 A2 F906 A5 F907 A4 F908 D3 F909 A5 F910 A5 F912 A3 F913 A4 F914 A1 F915 A3 F952 A6 F953 A6

F954 A6 F955 A7 F958 A5 F960 A6 F988 C6 I001 B4 I002 A3 I003 B4 I004 B4 I005 B3 I006 A3 I007 B3 I008 B4 I009 B3

I010 B3 I011 B3 I013 B4 I015 B3 I017 C3 I018 B3 I019 B3 I020 B3 I021 C3 I022 C2 I023 B4 I024 B4 I025 C3 I026 C3

I027 C3 I028 C3 I029 C3 I030 C4 I031 C4 I032 C3 I033 C3 I034 C4 I035 C4 I036 B4 I037 C4 I039 C4 I040 C4 I041 B4

I042 B3 I043 C3 I044 C2 I045 C4 I046 C4 I047 C4 I048 C4 I049 C4 I050 C4 I051 C4 I053 C4 I054 C4 I055 C4 I056 C3

I057 C4 I058 B4 I059 B4 I060 B4 I062 B3 I063 B3 I064 C3 I065 D4 I066 D3 I067 D3 I068 D3 I069 C3 I070 C4 I071 C3

I072 C3 I073 C4 I074 C4 I075 C4 I076 B4 I077 B3 I078 B2 I079 B4 I080 B4 I081 C4 I082 C5 I083 C5 I084 C5 I085 C5

I086 C4 I087 B4 I088 A3 I089 A4 I091 C4 I092 C4 I094 A4 I095 A3 I096 A4 I097 A4 I098 A4 I099 A4 I302 D1 I303 C1

I304 D1 I311 C2 I313 C2 I317 D2 I318 C3 I319 C2 I320 C1 I321 C2 I322 C2 I324 C1 I325 C2 I340 A4 I341 A4 I342 A4

I343 A4 I344 A4 I345 A5 I346 A4 I347 A4 I348 B4 I349 B4 I350 A2 I351 A2 I352 A2 I353 A3 I354 C3 I355 C3 I356 C3

I357 B4 I358 B4 I359 C4 I360 B4 I361 B5 I362 B5 I363 B4 I371 C3 I401 B5 I402 B6 I415 A8 I416 A7 I423 B6 I424 C6

I425 B6 I426 B6 I427 C7 I428 C7 I436 B5 I437 A5 I438 B6 I439 B6 I440 B6 I441 B5 I442 C6 I443 C6 I444 C7 I445 C7 I446 C6 I502 B8 I503 B8 I585 A3 I586 A3 I601 D6 I604 C6 I605 D6 I606 D6 I607 D6 I608 D6 I609 C6 I610 C6 I611 D6 I612 D6 I614 C6 I615 D6 I616 C6 I618 C6 I619 C6 I620 C6 I621 D7 I622 D6 I623 D7 I624 D5 I625 D5 I626 D6 I627 D6 I628 D6 I629 D6 I633 D7 I634 D7 I635 D7 I636 D6 I637 D6 I638 C7 I639 C6 I640 C6 I641 C7 I642 C6 I643 D6 I644 D6 I645 D7 I646 D6 I647 C5 I648 D5 I649 D5 I650 D5 I651 D6 I701 A2 I702 A2 I703 A2 I704 A2 I705 A2 I706 A2 I707 A2 I709 A1 I710 B2 I711 A1 I712 A1 I713 A1 I714 D3 I715 D3 I716 D3 I717 A4 I718 B2 I719 B1 I720 A1 I721 A4 I723 A2 I724 A2 I725 A2 I726 D3 I727 D3

I728 A2 I729 A2 I730 B1 I731 B2 I732 A2 I737 A2 I738 A2 I739 A2 I740 A2 I741 A2 I802 D8 I803 D8 I810 D7 I811 C7 I812 D8 I813 D7 I814 C8 I815 D8 I816 C7 I817 D7 I818 C8 I819 C8 I822 D8 I829 D7 I833 D7 I834 D8 I836 D7 I838 D7 I840 D8 I841 C7 I842 C8 I844 C7 I847 D8 I848 D8 I901 A4 I902 A4 I903 A4 I904 A4 I905 A4 I906 A4 I907 A4 I908 A4 I910 A4 I951 A8 I952 A8 I953 A8 I954 A8 I955 A8 I956 A6 I958 A7 I959 A7 I961 A7 I992 A8 I995 C8 I996 C8

1V / div DC

20us / div

F302

F617

F626 F701 F702

F705 F706

F707 F708

I904

I341

I344

F624 F625

F613

F615F303

F306

F305 No wafeform available

F011 1V9 F012 1V9 F903 11V9 F905 3V3 F906 11V6 F915 5V3 F912 33V7

F913 8V F958 11V6 F960 11V4 F954 5V4 F992 2V5

F996 1V8 1V / div DC 20us / div

200mV / div AC

20us / div

200mV / div DC

20us / div

200mV / div DC

20us / div

200mV / div DC

20us / div

500mV / div DC

20us / div

500mV / div DC

20us / div

500mV / div DC

20us / div

20mV / div AC

1ms / div

20mV / div AC

1ms / div

50mV / div AC

1ms / div

50mV / div AC

1ms / div

50mV / div AC

1ms / div

50mV / div AC

1ms / div

1V / div DC

5ms / div

1V / div DC

20us / div

2V / div DC

5us / div

Block Diagrams, Testpoint Overviews, and Waveforms

23LC4.2E AA 6.

Testpoint Overview TV & Scaler Board (Top Side)

3139 123 5804.2

E_14490_022.eps

030604

SERVICE TESTPOINT

F452

500mV / div DC

20us / div

 

E_06532_012.eps

130204

24LC4.2E AA 6.

Block Diagrams, Testpoint Overviews, and Waveforms

I2C IC Overview

E_14490_106.eps

040804

6693 5686

3707

DDC_5V

3702

3706

HERCULES

I2C BUS INTERCONNECTION DIAGRAM

1303

7011 SET

PROCESSOR

PART OF

VIDEOPROCESSER (HERCULES)

ERR

7099 M24C16 EEPROM

(NVM)

ERR

3096 3088

+3V3STBY +3V3STBY

3433 3432

+3V3STBY +3V3STBY

3097

+3.3V

SDA

SCL

NVM_WP

108

104

109

7693

M24C02

EEPROM

256x8

7560

TDA9178T

HISTOGRAM

ERR

14 11

7531

M24C32

EEPROM

ERR

7530

M29W040B

FLASH

ROM

512kx8

ERR

7501

K4D263238M

SDRAM IMx32x4

ERR

TUNER IF

7401 GM1501 SCALER

ERR

N1 N2

HISTOGRAM

SCALER

A13

PCHD_MUX

A11

FLASH/CONTROL

A10

SDRAM

1302

TUNER

33023303

For

COMPAIR

only

DVI-D CONNECTOR

VGA CONNECTOR

PCHD-IO

SDA_IO

SCL_IO

NVM_WPP

ADDRESS

DATA

ADDRESS

DATA

1601

UART_RX

UART_TX

UART_RX

UART_TX

SDA_VGA

SCL_VGA

SDA_DVI

SCL_DVI

SDA_DVI

SCL_DVI

1698

1687

1680

1511

RESERVED

F303

F302

3697 3696

6691 5692

DDC_5V

3691

7694

M24C02

EEPROM

256x8

SDA_DVI

SCL_DVI

DVI_5V

3705 3704

1409

ERR

PIXEL +

1001

SDAO

SCLO

7101

EP1C12F

T2 R2

SCALER

INTERFACE

A9 PP4 PP3

Block Diagrams, Testpoint Overviews, and Waveforms

25LC4.2E AA 6.

Supply Voltage Overview

1001

1200

1520

POWER_DOWN

1910

+8VSW_TV+8VSW_TV

+12VSW

7920 L78M08CDT

5920

+5VSW

+12VUNREG

+3V3STBY

+12VUNREG

+3V3STBY

AUD_SUP

+5VSW

+VTUN

+12VSW

AUD_SUP

7930 MC34063AD

5930

6930

5931

TO LCD DISPLAY

5932

7011

7001

7003

3374

5910

7910

7562

1701

SUPPLY

7952

5952

6951

5953 5954

SUPPLY

CONTROL

HERCULES

3910

6910

6911

-/C33

F913

F912

F915

F906

F905

F903

TV SUPPLY

SUPPLY PAN EL

TUNER IF

HERCULES

HISTOGRAM

SUPPLY

A14

5909

A13 A12 A11

A9 A7 A5 A3 A2 A1

A3 A2 A1

A3 A2

+12VUNREG

+3V3STBY

+12VUNREG

PANEL_PWR_CTL

+3V3_PLL

+12VSW

A14

+VTUN

+3V3STBY

+3V3STBY (FOR ITV ONLY)

+3V3STBY

+1V8_A

+1V8_B

127

+3V3STBY

+8VSW_TV

+12VSW

+8VSW_2

A14

+8VSW_TV

TO 45 - 7011

+5VSW

A14

5984

+3V3_ADC

5985

+3V3_DVI

5986

+3V3_IO

5987

+3V3_LBADC

5988

+3V3_LVDSA

5989

+3V3_LVDSB

5990

+3V3_LVDS

+3V3_PLL

+3V3_ADC

+3V3_DVI

+3V3_IO

+3V3_LBADC

+3V3_LVDSA

+3V3_LVDSB

+3V3_LVDS

5991

+2V5_DDR +2V5_DDR

5994

7992

+1V8

A7 A9

A9, A10

A7 A9

A10

A7 A9

+1V8_ADC

5996

+1V8_DVI

5997

A3 A6

+1V8_CORE

+1V8_ADC

+1V8_DVI

+1V8_CORE

+12VSW

A13

+12VSW

PAN_VCC

+5VSWI +5VSWI

5998

5958

7995

7993

5959

5956

7954

7955

STANDBY

BU_LIGHT_ADJ1

LAMP_ON_OFF

CONTROL

1005

1403

VGA

CONN.

LVD S

CONN.

DVI-D CONN.

1008

1004

1601

AUDIO AMPLIFIER

AUDIO_SUP

TO 15, 16 - 7707 (ITV ONLY)

+3V3STBY

SCALER

LCD DISPLAY 17”

SDRAM

FLASH/CONTROL

3D COMB FILTER

LVD S IN

EPLD CONT.

PIXEL+ PANEL

EPLD I/O

A10

PP4

PP1

PP3

PP2

A11

+2V5_DDR

A14

FSVREF

A14

+3V3_DVI

+3V3STBY

A14

+3V3_PLL

A14

+5VSWI

A14

+3V3_LBADC

A14

+3V3_IO

A14

+3V3_LVDSB

A14

+2V5_DDR

A14

+3V3_LVDSA

A14

+3V3_LVDS

A10

FSVREF

A14

+1V8_DVI

A14

+1V8_ADC

A14

+3V3_ADC

+3V3_DVI

+3V3STBY

+3V3_PLL

+5VSWI

+3V3_LBADC

+3V3_IO

+1V8_CORE

+3V3_LVDSB

+2V5_DDR

+3V3_LVDSA

+3V3_LVDS

FSVREF

+1V8_DVI

+1V8_ADC

+3V3_ADC

SCALER INTERFACE

A14

+5VSWI

+3V3STBY

A14

+3V3_PLL

A14

+3V3_ADC

A14

+3V3_DVI

A14

+3V3_IO

A14

+3V3_LBADC

A14

+3V3_LVDSA

A14

+3V3_LVDSB

A14

+3V3_LVDS

A14

+1V8_ADC

A14

+2V5_DDR

A14

+1V8_CORE

A14

+1V8_DVI

3501

3502

+5VSWI

+3V3STBY

A14

+3V3_IO

+3V3STBY

+3V3_IO

+3V3STBY

HDMI

(MAINLY FOR NAFTA)

A12

+3V3STBY

+5VHDMI

+3V3STBY

+3V3_PLL

+3V3_ADC

+3V3_DVI

+3V3_IO

+3V3_LBADC

+3V3_LVDSA

+3V3_LVDSB

+3V3_LVDS

+1V8_ADC

+2V5_DDR

+1V8_CORE

+1V8_DVI

FSVREF

1801

+5VSWI

DCC_5V

+5VSW_1

1103

3169

1687

PCHD-MUX

A13

+3V3STBY

A14

+5VSWI

+3V3STBY

1302

+3V3STBY

1104

REAR I/O SCART

+5VSWI

+3V3STBY

+5VSWI

+3V3STBY

3702 6693

1698

PCHD-IO

6692

5686

1680

3691 6691

5692

1301

SIDE IO & LKB

++3V3STBY

1540

FRONT IR/LED

E_14490_075.eps

160704

+5VSW

1001

7504

7505

7501

5107

5104

5105

+3V3

+1V5

+1V5_PLL

+1V5_INT

+3V3_IO

1409

3876

3878

5870

5851

5856

5855

3855

2V5P

2V5D

2V5A

OUTIN

3V3_400mA

8V3d

8V3

3V3STBY

3V3

VLCD VLCD

3V3STBY

68756876

7851 LF25CDT

1801

1003

1 2

LCD DISPLAY 23” & 26”

+ 57 hidden pages

Philips LC4.2E, 23PF9956/12, 26PF9956/12, 17PF9946/12, 23PF9946/12 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual