Philips Chasis LC03E

5/21/2018 Philips Chasis LC03E

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Published by RB 0370 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 13571

Copyright 2003 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

LC03EAA

Contents Page Contents Page1 Technical Specifications, Connections,

and Chassis Overview 2

2 Safety Instructions, Warnings, and Notes 5

3 Directions for Use 6

4 Mechanical Instructions 14

5 Service Modes, Error messages,

and Repair Tips 20

6 Block Diagrams

Block Diagram (Tuner-IF-Video) 27

Block Diagram (TV Control and Inverter Panel) 28

Block Diagram (Scaler Board) 29

I2C-ICs and Error Codes Overview 30

Powerlines Overview 31

Testpoint Overview TV Board (15/17) 32

Mapping Testp. and Waveforms TV Board 33

Testpoint Overview Scaler Board 34

Testpoint Overview TV Board (23) 35

Wiring Diagram 15 & 17 Inch 36

Wiring Diagram 23 Inch Wide Screen 37

7 Electrical Diagrams and PWB lay-outs Diagram PWB

TV Board: U_Cont (Diagram A1) 38 50-69

TV Board: Mem for 100-pg Txt (Diagram A2) 39 50-69

TV Board: Tuner Function (Diagram A3) 40 50-69

TV Board: IF Video Sync Chr. (Diagram A4) 41 50-69

TV Board: SAW Filter (Diagram A5) 42 50-69TV Board: Analog Comb Filter (Diagram A6) 43 50-69

TV Board: Audio Delay Line (Diagram A7) 44 50-69

TV Board: Audio Processing (Diagram A8) 45 50-69

TV Board: Audio Ampl. (15/17)(Diagram A9a) 46 50-69

TV Board: Audio Amplifier (23) (Diagram A9b) 47 50-69

TV Board: Local Supply (Diagram A10) 48 50-69

TV Board: SCART I/O (Diagram A11) 49 50-69

Scaler Panel: Power (Diagram C1) 70 80-89

Scaler Panel: I/O & Interface (Diagram C2) 71 80-89

Scaler Panel: Video Decoder (Diagram C3) 72 80-89

Scaler Panel: Scaler (Diagram C4) 73 80-89

Scaler Panel: Output (LVDS) (Diagram C5) 74 80-89

Scaler Panel: SDRAM (Scaler) (Diagram C6) 75 80-89

Scaler Panel: PC-In (Diagram C7) 76 80-89

Scaler Panel: uP (Diagram C8) 77 80-89

Scaler Panel: Video Converter (Diagram C9) 78 80-89

Scaler Panel: HDTV Decoder (Diagram C10) 79 80-89

Side I/O Panel (Diagram D) 90 91

Top Control (Diagram E) 90 92

Inverter Panel (TN) (Diagram IN) 93 94

Inverter Panel (IPS) (Diagram IN1) 95 97

Inverter Panel (IPS) (Diagram IN2) 96 97

Front LED Panel (Diagram J) 98 98

8 Electrical Alignments 99

9 Circuit Descriptions 103

Abbreviation List 115

IC Data Sheets 117

10 Spare Parts List 120

11 Revision List 126
http://ctv-vcr-index.pdf/


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Technical Specifications, Connections, and Chassis OverviewEN2 LC03E1.

1. Technical Specifications, Connections, and Chassis Overview

1.1 Technical Specifications

1.1.1 Reception

Tuning system : PLL

Colour systems : PAL B/G,: PAL D/K,

: PAL I.

: SECAM B/G,

: SECAM D/K,

: SECAM L,

: SECAM L1

:

Sound systems : BI NICAM B/G,

: 2CS B/G,

: FM/FM (5.5-5.74),

: NICAM B/G

: (5.5-5.85),

: NICAM D/K

: (6.5-5.85),

: NICAM I (6.0-6.52),

: NICAM L (6.5-5.85)

Built-in radio type : FM

Speakers 15/17 model : Full range

: 2 x 3 W_rms

Speakers 23 model : Full range

: 2 x 5 W_rms

Frequency bands : UVSH

IF Freq. : 38.9 MHz

Channel selections : 100 channels

: Full cable, UVSH

Aerial input : 75 ohm

: Coax, IEC-type

Pixel format : 15: 1024 x 768 (XGA)

: 17: 1280 x 768

(WXGA)

: 23: 1280 x 768

(WXGA)

Viewing angle (HxV) : 15 (TN): 120x90 deg.

: 15" (IPS): 176x176

deg.

: 17 (TN): 160x160

deg.

: 17" (IPS): 176x176

deg.

: 23 (IPS): 176x176

deg.

1.1.2 Miscellaneous

Mains voltage 15/17 model : External power

Supply

: Input: 100-240 V_ac,

1.5 A

: Output: 12 V_dc,

: +/- 0.6 V, 60 W

Mains voltage 23 model : External power

Supply

: Input: 100-240 V_ac,

2.5 A

: Output: 24 V_dc,

: +/- 1.2 V, 5A

Mains frequency : 50/60 Hz

Operating temperature : + 5 to + 35 deg. C

Storage temp. : -20 to 60 deg. C.

Maximum humidity : 90 % R.H. max

Power dissipation : 15: 47 W

: 17: 51 W

: 23: 55 W

Standby Power dissipation : 1 W

Weight : 15: 6.2 kg

: 17: 6.4 kg

: 23: 11.5 kg

Dim. 15 model (WxHxD) : 517 x 307 x 65 mm



1.2 Connections

1.2.1 Front + Top Controls

Figure 1-1 Left side connections

1.2.2 Rear Connections Part 1

Figure 1-2 Rear Connections Part 1

Subwoofer out1 - Var. level 1x

Headphone, stereo

1 - 32 - 600 ohm

Audio - R

1 - 0.5 V_rms/10 kohm

Audio - L

1 - 0.5 V_rms/10 kohm

MENU

P

TOP CONTROLS

VOLUME PROGRAM

Red

IR

Light sensor(23" only)

CL 36532023_065.eps

100403

L R

Audio Out

EXT. 2

SUBWOOFER

CL 36532054_018.eps290703


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Technical Specifications, Connections, and Chassis Overview EN3LC03E 1.

SCART EXT/2 (CVBS +YC) Only for 17 and 23 models

Figure 1-3 SCART connector

1 -Audio - R 2 - Audio - R 0.5 V_rms/10 kohm 3 -Audio - L 4 - Audio Ground 5 - Blue Ground 6 - Audio - L 0.5 V_rms/10 kohm 7 - N.C.

8 - CVBS-status2 0 - 1.3 V: INT

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3

9 - Green Ground 10- P50

11- N.C.12- N.C.

13- Red Ground 14- Blanking Ground 15- C 1 V_pp/75 ohm 16- N.C.

17- Video in/out Ground 18- RGB sw. ctrl Ground 19- CVBS 1 V_pp/75 ohm 20- CVBS 1 V_pp/75 ohm 21- Common Ground



S-VHS - In Hosiden

1 -Y Ground 2 -C Ground 3 - Y 1 V_pp/75 ohm 4 - C 0.3 V_pp/75 ohm

Video - In (Cinch)

1 - CVBS 1 V_pp/75 ohm

Audio - In (Cinch)

1 - Audio - L 0.5 V_rms/10 kohm 2 - Audio - R 0.5 V_rms/10 kohm



DC - In

1 - 12 V_dc/5A/60W

VGA- in (Sub-D)

Figure 1-6 VGA Connector

1 - Red 0.7 V_pp/75 ohm 2 - Green 0.7 V_pp/75 ohm 3 - Blue 0.7 V_pp/75 ohm 4 - Sense Ground

5 - Ground

6 - Red Ground 7 - Green Ground 8 - Blue Ground

9 - +5V10- Sync Ground 11 - Sense Ground 12 - Bi-direct. data

13- H-sync 14- V-sync 15- Data clock

Audio - PC In

1 - Audio - R 0.5 V_rms/10 kohm 2 - Audio - L 0.5 V_rms/10 kohm

Aerial - In (IEC)

1 - IEC type 75 ohm, coax

FM Ant (IEC)

1 - IEC type 75 ohm, coax

SCART EXT1 - In/Out (RGB/YUV and CVBS)

Figure 1-7 SCART connector

1 - Audio - R 0.5 V_rms/1 kohm 2 - Audio - R 0.5 V_rms/10 kohm 3 - Audio - L 0.5 V_rms/1 kohm 4 - Audio Ground 5 - Blue Ground 6 - Audio - L 0.5 V_rms/10 kohm

1 21

202CL96532137_056.eps

171199

L

R

S-Video

Video In

Audio

CL 36532054_019.eps290703

DC In

PC Input (VGA)

Audio In (PC)

FM ANT

EXT. 1

L

R

CL 36532054_020.eps290703

CL 16532023_043.eps210901

1

610

11

5

15

1 21

202CL96532137_056.eps

171199


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Technical Specifications, Connections, and Chassis OverviewEN4 LC03E1.

7 - Blue 0.7 V_pp/75 ohm 8 - CVBS-status 0 - 1.3 V: INT

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3 9 - Green Ground 10- N.C.

11- Green 0.7 V_pp/75 ohm 12- N.C.

13- Red Ground

14- Blanking Ground

15- Red 0.7 V_pp/75 ohm 16- RGB-status/

FBL 0 - 0.4 V: INT

1 - 3 V: EXT/75 ohm 17- Video in/out Ground 18- RGB sw. ctrl Ground 19- CVBS-out 1 V_pp/75 ohm 20- CVBS-in 1 V_pp/75 ohm 21- Common Ground

1.3 Chassis Overview

1.3.1 15/17 model

Figure 1-8 Chassis Overview 15/17 model

1.3.2 23 model

Figure 1-9 Chassis Overview 23 model

ComPair

RightSpeaker

LeftSpeaker

TO LCD PANEL

LCD PANEL

CL 36532023_067.eps140403

TOP CONTROL PANELE

A

INVERTER PANELIN

SIDE I/O PANELD

SCALER BOARDC

FRONT LEDPANELJ

TV BOARD

LCD PANEL

TV BOARD

SIDE I/O PANEL

SCALER BOARD

TOP CONTROL PANEL

SpeakerassyR

FRONT LED PANEL

SpeakerassyL

CL 36532044_022.eps011003

To LCD

To

Inverter

E D

J

CA

ComPair


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Safety Instructions, Warnings, and Notes EN5LC03E 2.

2. Safety Instructions, Warnings, and Notes

2.1 Safety Instructions

Safety regulations require that duringa repair:

Always connect the set to the mains via an isolation

transformer (800 VA).

Replace safety components, indicated by the symbol,only by components identical to the original ones.

Safety regulations require that aftera repair, the set must be

returned in its original condition. Pay, in particular, attention to

the following points:

Route the wire trees and HT cables correctly and fix them

with the mounted cable clamps.

Check the insulation of the mains lead for external

damage.

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). Careless handlingduring 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 (on the inverter panel).

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

Clean the LCD display with a slightly humid cloth.

Measure the direct voltages and oscillograms with regard

to the chassis ground (), or hot ground () as this iscalled.

The direct voltages and oscillograms shown in the

diagrams are indicative. Measure them in the Service

Default Mode (see section Service Modes).

Where necessary, measure the voltages in the power

supply section both in normal operation () and in standby(). These values are indicated by means of theappropriate 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. 2K2indicates 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 expressed in Micro-Farads (=

x10-6), Nano-Farads (n= x10-9), or Pico-Farads (p= x10-12).

Capacitor values may also use the value multiplier as the

decimal point indication (e.g. 2p2 indicates 2.2 pF).

An 'asterisk' (*) indicates component usage varies. Refer to

the diversity tables for the correct values.

The correct component values are listed in the Electrical

Replacement Parts List. Therefore, always check this list

when there is any doubt.

2.3.3 Rework on BGA 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, 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 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 themounting 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.

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 neighbouringcomponents, it may be necessary to reduce some

temperatures and times


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Mechanical InstructionsEN14 LC03E4.

4. Mechanical Instructions

Index of this chapter:

1. Service Position

2. Stand Removal

3. Rear Cover Removal

4. Shield Removal

5. I/O Assy Removal

6. LED/Remote Control Board Removal7. TV Board Removal

8. Scaler Board Removal

9. Inverter Board Removal

10. Top Control Assy Removal

11. LCD Panel Removal

12. Re-assembly

Note:Figures below can deviate from the actual situation, due

to different set executions.

4.1 Service Position

First, put the TV in its service position. Therefore place it upside

down on a tabletop (use a protection sheet or a foam cushion).

Take care that this is flat and free from obstacles like screws,

to prevent damaging the fragile LCD screen.

ESD protective service buffers, as shown below, can be used

(3122 785 90580).

Figure 4-1 ESD protective service buffers

4.2 Stand Removal

4.2.1 For 15/17 inch model

Use a Torx screwdriver to remove the stand from the backside

of the monitor housing by unscrewing and removing the four

M4x12 mounting screws and next, take away the stand.

Figure 4-2 TV stand removal 15/17 model

4.2.2 For 23 inch model

1. Use a Torx screwdriver to remove the stand from thebackside of the monitor housing by unscrewing the four

M4x12 mounting screws.

2. Remove the four mounting screws out of their mounting

holes.

3. First push the stand in horizontal direction to the monitor

bottom side, then lift the stand and take it away.

Figure 4-3 TV stand removal 23 model

4.3 Rear Cover Removal

4.3.1 For 15/17 inch model

Manually unlock and remove both corner cover caps.

Figure 4-4 TV rear cover removal 15/17 model

CL 36532044_001.eps160503


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Mechanical Instructions EN 15LC03E 4.

Continue with the paragraph 4.3.3.


Manually unlock and remove the IO connector cover cap.

Figure 4-5 TV rear cover removal 23 model

4.3.3 For all models

1. Make sure all power-, audio-, video-, coax-, and SCART

cables are unplugged.

2. Remove the five Torx screws securing the monitor rear

cover.

3. Carefully remove the rear cover and store it on a safe

place.

4.4 Shield Removal

Remove at the SCART plug side the screw besides the

plug.

Remove the connector plate.

Figure 4-6 TV SCART plug side

Unscrew, at the bottom side, the connector plate screw and

remove this plate.

Figure 4-7 Bottom side connector plate

Use a 5 mm socket screwdriver to remove both connector

distance bolts from the PC input / VGA-in socket.

Figure 4-8 VGA Connector screws

Remove all shield mounting screws.

Figure 4-9 Shield with mounting screws

Bend at the SCART-plug side the thin metal electrostaticshield away from the sockets, so the complete shield can

be lifted later on.

Figure 4-10 Shielding

Unlock the shield by carefully moving it a few millimetres to

the bottom side of the monitor. The topside of the shield

has to detach from underneath the two lock clamps, which

secure the shield at topside. Carefully lift the shield with

respect for the cables and/or connector sockets. Take out

the shield and store it on a safe place.

CL 36532044_002.eps160503

Connector cover cap

CL 36532044_003.eps160503

Connector plate screws

CL 36532044_004.eps160503

Connector plate screws

CL 36532044_006.eps160503

VGA connector distance screws

CL 36532044_007.eps160503

Electrostatic shield


16/126


4.5 I/O Removal

4.5.1 Side I/O assy removal for 15/17 inch model

Figure 4-11 Side I/O assy removal for 15/17 model

1. Disconnect the cable connector [0240] from the side I/O

assy.

2. Unlock this unit by shifting it one centimetre to the outside

direction of the monitor.

3. Take out this side I/O assy.

4.5.2 Side I/O assy removal for 23 inch model

Figure 4-12 Side I/O assy removal for 23 model

1. Disconnect the cable connector [0240] from the side I/O

assy.

2. Unlock this unit by pushing it one centimetre in horizontal

direction (to bottom side) of the monitor.

3. Take out this side I/O assy.

4.6 Front LED PanelRemoval

4.6.1 Only for the 23 inch model

To gain access to the Front LED panel unscrew and remove

the three mounting screws from the loudspeaker box covering

the panel. Release cables and take out the loudspeaker box.



1. Unlock the transparent securing clip, which holds the Front

LED panel in place, and take out the Front LED panel .

(See previous figure: Side IO assy removal for 15/17

model).

2. To completely remove the Front LED panel (incl. Lens),

remove the assy screw.

4.7 TV Board Removal

4.7.1 For 15 /17inch model

Disconnect all five TV board connectors out of the regarding

sockets [3225], [1234], [1231], [1902], and [1732].Continue with the paragraph 4.7.3.


Disconnect all six TV board connectors out of the regarding

sockets [3225], [1233], [1231], [1902], [1732] and [1734].



1. Pull the thin flat cable out of its special shaped connector,

[1010].

2. Unscrew and remove the three TV board mounting screws.

3. Take out the TV board.

Figure 4-13 TV board

Note: Sometimes it is necessary to place the TV board in its

service position, for easy signal measuring. See picture below.

Figure 4-14 TV board in service position

CL 36532044_008.eps021003

Side I/O Assy

CL 36532044_012.eps160503

CL 36532044_010.eps160503

CL 36532044_010.eps160503


17/126


4.8 Scaler Board Removal

1. Carefully disconnect the cable connector in the centre of

the Scaler board [1506]. Take care not to damage the

fragile cables.

2. Disconnect the cable connectors at the edge of the Scaler

board [1402] and [1003].

3. Pull the thin flat cable out of its special shaped connector

[1681].

4. Unscrew and remove two Scaler board mounting screws.

5. Take out the Scaler board.

Figure 4-15 Scaler board

Note: Sometimes it is necessary to place the Scaler board in a

service position. In this case it is necessary to use the specific

Repair kit scaler board including two extra long cables (order

nr. 3122 785 90490).

Figure 4-16 Scaler board in service position

Important: Video converter chip heat sink.

1. Before you de-solder the video converter chip SAA7118

from the board, the heat sink must be removed from the

chip. Use a pair of pliers to remove the heat sink by means

of a twist- and pull movement (see figure). Store the heat

sink on a safe place, adhesive side up!

2. Place the self-adhesive heat sink back in place after the

chip exchange action has been finished.

Figure 4-17 Heat Sink Removal

4.9 Inverter Board Removal (only for 15/17 inchmodel)

Note:The Inverter board is available in two versions: one

model for TN-displays and another model for IPS-displays. The

(dis)assembly procedure is the same for both versions.

1. Disconnect the cable from the Inverter board.

2. Disconnect at top and bottom side all the black/white and

pink cable connectors.

3. Use a pair of pliers to bend the metal securing clamp in

such a way that the Inverter board can be taken out.

4. Remove the Inverter board and store it on a safe place.

Figure 4-18 Inverter board

4.10 Top Control Assy Removal

1. Remove the cable from the Top control assy [1500].

2. Remove both mounting screws that secure the Top control

assy to the monitor frame.

3. Take out the Top control assy.

CL 36532044_013.eps160503

CL 36532044_011.eps160503

CL 36532044_014.eps160503

Heat sink


18/126


Figure 4-19 Top control assy

4.11 LCD Panel Removal

4.11.1 For 15 /17 inch model

Note: the LCD Panel is available in two versions: a TN-display

and an IPS-display. The (dis)assembly procedure is the same

for both versions.

1. Unscrew and remove the four LCD panel frame mounting

screws, which secure the panel frame to the monitor front.2. Disconnect at both sides the speaker cable plugs and

remove the speaker cable assy.

3. Lift and take out the LCD panel (including its frame).

Figure 4-20 LCD frame mounting screws 15/17 model

Continue with the paragraph 4.11.3


1. To gain access to whole LCD Panel, unscrew and remove

the mounting screws from both Loudspeaker boxes.

Release cables and take out both Loudspeaker boxes.

Note: Avoid unscrewing screws from the Loudspeaker boxes

sockets, if you dont want to disassemble the Loudspeaker

boxes.

1. Unscrew and remove the eight LCD frame mounting

screws, which secure the panel frame to the monitor front.

2. Lift and take out the LCD panel (including its frame).

Figure 4-21 LCD frame mounting screws 23 model


1. Remove the plastic monitor front from the protection sheet

and place the LCD panel, including the panel frame, back

on the protection sheet or foam cushion. Make sure againthat there are no screws or other parts left behind on the

protection sheet, that can damage the fragile panel screen

surface.

2. Unscrew the four screws, securing the panel frame to the

LCD panel (see figures: LCD panel mounting screws).

3. Take off the panel frame while leading the panel connector

through the access hole in the frame.

Figure 4-22 LCD Panel mounting screws, 15/17 model

Figure 4-23 LCD panel mounting screws, 23 model

4.12 Re-Assembly

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

order.

Notes:

When you secure the panel frame (with the LCD panel) in

the monitor front, do not mount the fifth screw in the middle

CL 36532044_015.eps160503

Mounting screw(2x)

CL 36532044_016.eps160503

CL 36532044_017.eps011003

LCD frame screws (4x)


19/126


of the bottom side. You will need this screw position for

mounting the TV rear cover.

Take extra care when fixing the connector bracket screw at

SCART plug side. You can easily damage the TV board

when you use too much force.

Do not forget to re-place the ground cable of the Scaler

board when mounting the screw at topside.

Take extra care when reconnecting the Inverter board

backlight connectors (black/white/pink). Connect them

properly to avoid high voltage sparking


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Service Modes, Error Messages, and Repair TipsEN20 LC03E5.

5. Service Modes, Error Messages, and Repair Tips

Index of this chapter:

1. Test Points

2. Service Modes

3. Errors

4. The Blinking LED Procedure

5. ComPair

6. Trouble Shooting 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. On the PCB, test points are specifically

mentioned in the service manual as half moons with a dot in

the centre.

Measurements are performed under the following conditions:

Video: colour bar signal.

Audio: 3kHz left, 1kHz right.

5.2 Service Modes

5.2.1 Limited DST Support

This chassis does still have some limited Dealer Service Tool

(DST) support, although this remote is not for sale anymore.

The set can be put in two service modes via the DST (RC7150).

These are the Service Default Mode (SDM) and the Service

Alignment Mode (SAM).

Installation Features Dealer

For easy installation and diagnosis the DST can be used.

When there is no picture (to access the error code buffer via the

OSD), DST can enable the functionality of displaying thecontents of the entire error code buffer via the blinking LED

procedure.

The dealer can use the RC7150 for programming the TV-set

with presets. Ten different program tables can be programmed

into the DST via a GFL or MG TV-set (downloading from the

GFL or MG to the DST; see GFL or MG service manuals) or by

the DST-I. For explanation of the installation features of the

DST, the directions for use of the DST are recommended.

5.2.2 Service Default Mode (SDM)

Purpose of SDM:

To provide a situation with predefined settings to get the

same measurements as in this manual.

To start the Blinking LED procedure.

To have the possibility to override the 5V protection

Activating SDM:

By transmitting the "DEFAULT" command with the RC7150

Dealer Service Tool (this works both while the set is in

normal operation mode or in the SAM).

Standard RC sequence 0-6-2-5-9-6 followed by pressing

the MENU-button (this works both while the set is in

normal operation mode or in the SAM).

By shorting pins 5 and 6 of connector 1170 of LED/RC

panel. Then apply DC supply from the AC-DC adaptor (not

required to remove the metal shielding).

Note: By temporarily shorting pins 5 and 6 of connector 1170

and then applying DC supply from the AC-DC adaptor, the 5V

protection is disabled.

Caution:Overriding the 5V protection should only be used for

a short period of time. In case of S/W protections (error 4) the

set will shutdown after 15 sec.

For recognition, SDM is displayed at the upper right corner of

the screen.

Figure 5-1 SDM Menu

Deactivating SDM:

Press the EXIT-button on the DST, or

Press 0-0 on the standard RC, or

Switch the set to Standby (the error buffer is NOT cleared).

Note:When the mains power is switched off while the set is in

SDM, the set will switch to SDM immediately when the mains

is switched on again.

The SDM sets the following pre-defined conditions:

PAL/SECAM sets: tuning at 475.25 MHz PAL.

NTSC sets: tuning at channel 3 (61.25 MHz).

Volume level is set to 25% (of the maximum volume level).

Other picture and sound settings are set to 50%.

The following functions are switched off in SDM (and after

leaving SDM):

Timer.

Sleep timer.

The following functions are disabled during SDM (and enabled

after leaving SDM)

Parental lock.

Blue mute.

Hospitality Mode.

No-ident Timer (normally the set is automatically switched

off when no video signal (IDENT) was received for 15

minutes).

All other controls operate normally.

Special Functions SDM

Access to normal user menu

Pressing the MENU button on the remote control switches

between the SDM and the normal user menus (with the SDM

mode still active in the background).

Channel search

Pressing the P+ button of the remote control will select the

next available channel in the preset list.

Type nr, Error buffer, etcPressing the OSD or info+ button of the remote control

shows/hides the type nr, error buffer, SW ID, Hours and option

codes. OSD can be hidden to prevent interference with

waveform measurements.

SDM Menu

CL 36532023_084.eps110403

T Y P E : 1 7 P F 9 9 4 5 / 0 1 2 H R S : 0 0 2 9

S W I D : L C 0 3 E 2 1 - 1 . 1 1 S 3 1 7 1 . 0 3

E R R : 0 0 0 0 0 0 0

O P T : 7 9 2 5 4 1 4 5 6 1 2 8 0 0 0

S D M


21/126

Service Modes, Error Messages, and Repair Tips EN 21LC03E 5.

Access to SAM

By pressing 0-6-2-5-9-6 info+ (or OSD) in sequence on the

standard RC will switch from SDM to SAM.

5.2.3 Service Alignment Mode (SAM)

Purpose of SAM:

To do alignments.

To change option settings.

To display/clear the error code buffer values.

Activating SAM:

By transmitting the "ALIGN" command with the RC7150

Dealer Service Tool (this works both while the set is in

normal operation mode or in the SDM).

Standard RC sequence 0-6-2-5-9-6 followed by pressing

the info+-button (this works both while the set is in normal

operation mode or in the SDM).

Deactivating SAM:

Press the EXIT-button on the DST, or

Press 0-0 on the standard RC, or

Switch the set to Standby (the error buffer is NOT cleared).

Note:When the AC-DC adaptor power is switched off while the

set is in SAM, the set will go back to normal mode of operation

when the AC-DC adaptor is switched on again.

In SAM the following information is displayed on the screen:

Figure 5-2 SAM Menu

Operation hours timer (hexadecimal).

Software identification of the main micro controller of TV-

board (LC03BBC-X.YY), and (S3DD E.FF) is the software

identification for micro-P of Scaler board:

LC03 is the chassis name for LCD-TV launched in

2003.

BBC is 1 letter and 2 digit combination to indicate the

regional software type and the supported languages.

X = main version number.

YY= subversion number.

S3 = Scalar board used in 2003.

DD = screen size of the LCD panel.

E = main version number.

FF = subversion number.

Error buffer (7 errors possible).

Option bytes (8 codes possible), summary of options are

explained below.

Sub menus are listed in a scroll-menu.

SAM Menu ControlMenu items can be selected with the cursor UP/DOWN key.

The selected item will be highlighted. When not all menu items

fit on the screen, moving the cursor UP/DOWN will display the

next/previous menu items.

With the cursor LEFT keys, it is possible to:

Activate the selected menu item (e.g. GEOMETRY).

Change the value of the selected menu item (e.g.

HOR.SHIFT).

Activate the selected submenu (e.g. ASBY ON/OFF).

To return to the main menu / previous menu, press MENU

keys on the remote control

Access to Normal User Menu

Pressing the MENU button on the remote control switches

between the SAM and the normal user menus (with the SAM

mode still active in the background). Pressing the MENU key

in a submenu will go to the previous menu.

Menus and Submenus

CLEAR ERRORS: Erasing the contents of the error buffer.

Select the CLEAR ERRORS menu item and press the MENU

RIGHT key. The content of the error buffer is cleared.

The functionality of the OPTIONS and ALIGNMENTS (TUNER,

WHITE TONE, GEOMETRY, SOUND and SMART SETTING)

sub menus are described in chapter 8.

5.2.4 Customer Service Mode (CSM)

This chassis is equipped with the Customer Service Mode(CSM, like in the A10-chassis). CSM is a special service mode

that can be activated and deactivated by the customer, upon

request of the service technician/dealer during a telephone

conversation in order to identify the status of the set. This CSM

is a 'read only' mode therefore modifications in this mode are

not possible.

Activating Customer Service Mode.

The Customer Service Mode can be switched on:

By pressing RC button is sequence 1-2-3-6-5-4 or,

By pressing simultaneously the MUTE button on the

remote control and any key on the TV control buttons (P+,

P-, VOL +, VOL -) for at least 4 seconds.

When the CSM is activated:

Picture and sound settings are set to nominal levels.

Modes that interfere with the behaviour of the set are

switched off (sleep timer, auto standby, etc.).

Pressing cursor DOWN v on the RC will switch to CSM2

screen if it is in CSM1 screen. Likewise pressing cursor UP

^ will switch to previous CSM1 screen.

Pressing P+ or P- on RC will select next available

channel to be displayed.

Pressing channel numeric keys on RC will select the

desired channel to be displayed.

Deactivating Customer Service Mode.

The Customer Service Mode will be switched off after:

Pressing any key on the remote control handset (exceptP+, P- and cursor up/down)

Switching off the TV set with the mains switch.

All settings that were changed during activation of CSM are

restored to the initial values.

Customer Service Mode Information Screen

After activating the Customer Service Mode the following

screen will appear.

SAM Menu

CL 36532023_083.eps160403

T Y P E : 1 7 P F 9 9 4 5 / 0 1 2 H R S : 0 0 2 9

S W I D : L C 0 3 E 2 1 - 1 . 1 1 S 3 1 7 1 . 0 3

E R R : 0 0 0 0 0 0 0

O P T : 7 9 2 5 4 1 4 5 6 1 2 8 0 0 0

C L E A R E R R O R S

O P T I O N S

T U N E R

W H I T E T O N E

G E O M E T R Y

S O U N D

S M A R T S E T T I N G

S A M


22/126


Figure 5-3 CSM 1

The Customer Service Menu (CSM1) shows the following

information:

Line 1: TYPE: 99XX9999/99XHRS: nnnn. TYPE: type-

version/model of the set (i.e. 17PF9945/12). HRS:

Hexadecimal counter of operating hours. (Standby hours

are counted as operating hours).

Line 2: SWID: AAAABBC-X.YYS3DDE.FF. SWID:(Software identification of the main micro controller on TV-

Board and Scaler board) See paragraph Service

Alignment Mode (SAM). Details on available software

versions can be found in the chapter Software Survey of

the publication Product Survey - Colour Television.

Line 3: CODES: xx xx xx xx xx xx xx . Error code buffer

(see paragraph Errors). Displays the last 7 errors of the

error code buffer.

Line 4: OPT xxx xxx xxx xxx xxx xxx xxx xxx. Option

bytes. Option bits control the software and hardware

functionality of the chassis. An option byte or option

number represents 8 of those bits. Each option number is

displayed as a decimal number between 0 and 255. The

set may not work correctly when an incorrect option code

is set. See chapter 8 for more information on correct optionsettings

Line 6: SYSTEM: EUROPE/WEST EUR/EAST EUR/UK/

FRANCE. Indicates which colour and sound system is

installed for this preset as defined in the Manual INSTALL

menu:

PAL BG

PAL I

PAL DK

SECAM BG

SECAM DK

SECAM LL

Line 7: NO SIGNAL. Indicates that the set is not receiving

an ident signal on the selected source.

No or bad antenna signal; connect a proper antenna

signal Antenna not connected; connect the antenna

No channel / preset is stored at this program number;

go to the INSTALL menu and store a proper channel at

this program number

The tuner is faulty (in this case the CODES line will

contain number 13); check the tuner and replace/repair

if necessary

Note:On some models, BLUE MUTE is displayed (if the BM

option is ON) when no signal is received.

Line 8: TIMER ON. Indicates that the sleep timer is

activated. Complaints that may be caused by the activation

of the sleep timer.

Line 9: CHANNEL BLOCKED. Indicates that one or more

channels are locked except the selected channel.

Complaints that may be caused by locked channels:

TV cannot be switched on from standby with the local

keyboard buttons

P+ and P- buttons on local keyboard do not function

To disable the LOCK feature:

1. Select FEATURE menu (with the Remote Control)

2. Select LOCK (with the RC)

3. Set to OFF

Line 10: NOT PREFERRED. Indicates that the current

channel is not in the preferred channel list (by default, all

channels are skipped. A channel can be added as a

selected channel to the list of preferred channels:

1. Select INSTALL menu

2. Select CHANNEL EDIT

3. Select ADD/DELETE4. Set to ADD with the left/right cursor keys

Line 11: SOURCE. Indicates which SOURCE is installed

for this preset: EXT1, SVHS2, EXT2, or Tuner.

Line 12: SOUND. Indicates which sound mode is installed

for this preset: Mono, NICAM, Stereo, L1, L2, SAP, Virtual,

or Digital.

Line 13: VOLUME. Value indicates level at entry CSM.

Line 14: BALANCE. Value indicates level at entry CSM.

Line 15: COLOUR. Value indicates level at entry CSM.

Figure 5-4 CSM 2

The next Customer Service Menu (CSM2) shows the following

information:

Line 6: BRIGHTNESS. Value indicates level at entryCSM.

Line 7: CONTRAST. Value indicates level at entry CSM.

Line 8: HUE. Value indicates level at entry CSM.

Line 9: HOTEL MODE ON. Indicates that the Hotel mode

has been activated.

5.3 Errors

5.3.1 Error Code Buffer

The error code buffer contains all errors detected since the last

time the buffer was erased. The buffer is written from left to

right. When an error occurs that is not yet in the error code

buffer, the error is written at the left side and all other errorsshift one position to the right.

The error code buffer will be cleared in the following cases:

By activating the CLEAR ERRORS function in SAM menu.

By transmitting 0-6-2-5-9-9 with the normal RC.

By transmitting the commands DIAGNOSE 99 OK with

the DST (RC7150) or with ComPair.

Automatically reset if its contents has not changed for 50

hours.

By leaving SDM or SAM with the mains switch, the error buffer

is not reset.

Examples:

ERROR: 0 0 0 0 0 0 0 : No errors detected

ERROR: 6 0 0 0 0 0 0 : Error code 6 is the last and only

detected error

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

code 9 is the last detected (newest) error

CL 36532023_085.eps140403

1 T Y P E : 1 7 P F 9 9 4 5 / 0 1 2 H R S : 0 0 2 9 C S M 1

2 S W I D : L C 0 3 E 2 1 - 1 . 1 1 S 3 1 7 1 . 0 3

3 E R R : 0 0 0 0 0 0 0

4 O P T : 7 9 2 5 4 1 4 5 6 1 2 8 0 0 0

5

6 S Y S T E M : W E S T E U R

7 N O S I G N A L

8 T I M E R O N

9 C H A N N E L B L O C K E D

1 0 N O T P R E F E R R E D

1 1 S O U R C E : 5

1 2 S O U N D : M O N O

1 3 V O L U M E : 2 6

1 4 B A L A N C E : 1

1 5 C O L O U R : 5 0

CL 36532023_086.eps140403

1 T Y P E : 1 7 P F 9 9 4 5 / 0 1 2 H R S : 0 0 2 9 C S M 2

2 S W I D : L C 0 3 E 2 1 - 1 . 1 1 S 3 1 7 1 . 0 3

3 E R R : 0 0 0 0 0 0 0

4 O P T : 7 9 2 5 4 1 4 5 6 1 2 8 0 0 0

56 B R I G H T N E S S : 5 0

7 C O N T R A S T : 5 6

8 H U E : 5 0

9

1 0

1 1

1 2

1 3

1 4

1 5


23/126


The contents of the error buffer can also be made visible

through the blinking LED procedure. This is especially useful

when there is no picture. See paragraph 5.4 The blinking LED

procedure .

5.3.2 Error Codes

In case of non-intermittent faults, clear the error buffer before

starting the repair, to prevent that old error codes are present

(it is wise to write down the content of the error buffer before

you clear it). If possible check the entire content of the error

buffers. In some situations an error code is only the result of

another error code (and not the actual cause).

Note:a fault in the protection detection circuitry can also lead

to a protection.

Table 5-1 Error codes

TV-Board

Errors

Error 0 = No error

Error 4 = +5V protection. 5V protection active; set is

switched to protection; error code 4 is placed in the error

buffer; the LED will blink 4 times (repeatedly). A 5V failure

can cause a drop in the 5V supply output, resulting in an

undefined behaviour of the set. Therefore, all I2C devices

connected to the 5V supply are constantly monitored.

When none of these devices responds to the micro

controller for a prolonged time, the micro controller

assumes that there is a failure in the 5V supply. By starting

up the set with the service jumpers shorted, the 5V

protection is disabled and it is easier to determine the

cause. +5V protection will be activated when these I2C

devices fail (no I2C communication):

Main Tuner 1100 (diagram A3)

ITT sound processor MSP34xx IC-7620 (diagram A8)

Service tips:To isolate the problem area after overriding the

+5V protection, determine whether:

1. The +5V source is working properly IC7930 (diagram A10)

2. ITT sound processor circuit is loading the +5V; isolate coil

5620 (diagram A8)

3. The audio delay IC 7601 - IC7605 is loading the +5V

source; isolate coil 5601 (diagram A7)

4. Main tuner circuit is loading the +5V source; isolate coil

5122 (diagram A3)

Caution: Overriding the 5V protection when there is a 5V

failure can increase the temperature in the set and may cause

permanent damage to components. Do not override the 5V

protection for a prolonged time.

Error 6 = General I2C error. This will occur in the following

cases:

SCL or SDA is shorted to ground

SCL is shorted to SDA

SDA or SCL connection at the micro controller is opencircuit.

Error 8 = BOCMA IC TDA888xx (diagram A4) I2C

communication failure. BOCMA (IC7301 on TV board) is

corrupted or the I2C line to the BOCMA is low or no supply

voltage present at pin 14 (3V3) or no supply voltage at pin

23.

Error 9 = BOCMA IC TDA888xx 8V failure (SUP bit). No

supply voltage at pin 53. Check coil 5302.

Error 10 = NVM I2C error (diagram A1). NVM (EEPROM -

IC7066) does not respond to the micro controller.

Error 11 = Micro controller / NV Memory identification error.

During the last start-up the NVM and the micro controller

did not recognize each other (e.g. one of them was

replaced or the NVM memory has been changed/adapted

or lost), therefore the NVM was loaded with default values. Error 12 = Microprocessor (Painter - IC 7064) internal RAM

test failure.

Error 13 =Main Tuner I2C failure UR13xx. Tuner (item

1100, diagram A3) is corrupted or the I2C l ine to the tuner

is low or no supply voltage at pin 3, pin 6 or 7 of the tuner.

Error 14 =Sound processor I2C error IC7620 (MSP34xx,

diagram A8). Sound controller does not respond to the

micro controller.

Error 15 =SRAM IC CY7C1019 test failure (IC7070,

diagram A2).

Note:Only for Europe and AP-PAL execution.

Scaler Board

When the TV detects critical errors from the Scaler board, it will

shutdown into protection mode. After a short period of time, the

LED will blink according to the respective error codes.

Error

code

Error description Possible defective

components

Dia-

gram

0 No error detected - ----

1-3 Reserved

4 5V protection active IC7930 or +5V I2Cdevices

A3, A8,A10

5 Reserved

6 General I2C bus er-

ror

I2C bus s/c or o/c

7 Reserved

8 BOCMA I2C error IC 7301 A4

9 BOCMA 8V supply

failure

IC 7910 or IC7301 A4, A10

10 NVM I2C error IC 7066 A1

11 NVM identification

failure

IC 7066 A1

12 uProcessor internal

RAM test failure

IC 7064 A1

13 Tuner I2C error IC 1100 - UR13xx A3

14 Sound processor

I2C error

IC 7620 (MSP34xx) A8

15 SRAM I2C error IC 7070 A2

16 Reserved

17# 3D CF processor

I2C error

IC 7823 B

18-20 Reserved

21 Scaler protection

active

IC 7402 C4


active

IC 7351 C9


active

IC 7302 C3

24* HDTV decoder I2C

error

IC 7252 C10


active

IC 7752 C8

26 Reserved


active

IC 7471 C6


active

IC 7472 C6

29 Scaler uP I2C error IC 7753 or IC 7064 C8, A1

* = Not applicable to Europe execution# = Only for NAF-

TA 23" execution


24/126


Protection errors:

Error 21 = JagASM processor test failure (IC7402, diagram

C4). During start-up of set, the Scaler will do a quick test by

writing data to selective addresses and reading back the

data. If the core supply voltage is too low or data line is

broken, this error protection will be activated. Under these

circumstances, check:

Core supply of 2V5 to VDD pins of JagASM IC.

Clock pulse present at pin 3 of OSC generator item

1401 (diagram C4). Error 22 = Video formatter/converter I2C error IC7351

(GENESIS FLI2300, diagram C9).

Error 23 = Video decoder I2C error IC7302 (Philips

SAA7118E, diagram C3).

Note:BGA IC fixed with a heat sink (see chapter 4 how to

remove).

Error 25 = NVM I2C error (diagram C8). NV memory

(EEPROM - IC7752) does not respond to Scaler micro

controller.

Error 27 = SRAM IC MT48LC2M32B2TG test failure

(IC7471, diagram C6).

Error 28 = SRAM IC MT48LC2M32B2TG test failure

(IC7472, diagram C6).

Non-Protection errors:

Error 24 = HDTV decoder I2C error IC7252 (AD9883,

diagram C10).

Note:This error is NOT applicable to Europe execution.

Error 29 = TV uP IC7064 (diagram A1) and Scaler uP

IC7753 (diagram C8) I2C communication failure. When this

error occurred, there is no display on screen. In order to

read this error code, either activate SDM or press 062501

to read out the error code by blinking LED. Alternatively,

read the error codes out by using ComPair.

5.4 The Blinking LED Procedure

The contents of the error buffer can also be made visiblethrough the Blinking LED procedure. This is especially useful

when there is no picture.

When the SDM is entered, the LED will blink the contents of the

error-buffer. Error-codes 10 are shown by a long blink of

750msec, which is an indication of the decimal digit, followed

by a pause of 1500msec. followed by n short blinks. When all

the error-codes are displayed, the sequence is finished with a

LED display of 3 seconds. The sequence starts again.

Example:

Error code position: 1 2 3 4 5

Error buffer: 12 9 6 0 0

This gives after activating SDM: 1 long blink of 750msec +

pause of 1500msec + 2 short blinks - pause of 3 s - 9 shortblinks - pause of 3 s - 6 short blinks - pause of 3 s - long blink

of 3 s - etc.

Note:If errors 1, 2 or 4 occur, the LED alwaysblinks the last

occurred error, even if the set is notin service mode.

Another method of reading out a single error code is to use a

standard RC or a DST.

Standard RC - Press 0-6-2-5-0-x in sequence, to read

(blinking LED) out a respective error code in the error

buffer, where x = 1, 2, 3, 4, 5, 6, or 7.

DST: Press Diagnose x OK to read (blinking LED) out

a respective error code in the error buffer, where x = 1, 2,

3, 4, 5, 6, or 7.

5.5 ComPair

5.5.1 Introduction

ComPair (Computer Aided Repair) is a service tool for Philips

Consumer Electronics products. ComPair is a further

development on the European DST (Dealer Service Tool),

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.

5.5.2 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.

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

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 show 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 interactivequestion / answer procedure, ComPair will enable you to find

most problems in a fast and effective way.

Beside fault finding, ComPair provides some additional

featureslike:

Up- or downloading of pre-sets.

Managing of pre-set lists.

Emulation of the Dealer Service Tool (DST).

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.


25/126


5.5.3 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 between the

connector on the rear side of the ComPair interface

(marked with 'I2C') and the ComPair connector inside the

TV (the ComPair connector (pos.nr.1111) is situated close

to the tuner on the TV Board, see Chassis Overview in

chapter 1).

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

5.5.4 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).

ComPair interface cable: 3122 785 90004.

ComPair firmware upgrade IC: 3122 785 90510 (only for

sets with software upgrade facilities).

Transformer Europe: 4822 727 21632.

Transformer UK: 4822 727 21633.

Note:If you encounter any problems, contact your local

support desk.

5.6 Trouble Shooting Tips

5.6.1 Scaler/TV Board Power Supply Problems

In this paragraph some troubleshooting steps for checking the

power supply of the Scaler-board and TV-board circuitry are

described.

Measure across pin-1 and pin-4 of connector 1003(diagram C1). +12V (15 and 17) or +24V (23) should be

present. If the voltage is not present, probably is caused

by:

AC to DC adaptor is defect.

Short circuit in TV-board (can be isolated by connector

1003).

Fuse 1002 is open circuit.

Measure across C2923 (diagram A10). +3V3 should be

present. If not present, probably this is caused by:

IC7920 is defective.

R3925 is defective.

The power supply circuit (diagram C1) is defective (see

Scaler-board circuit trouble shooting tips).

Measure R3017 or R3085 (diagram A1) with oscilloscope.

There should be I2C activity. If no activity is present, thisprobably is caused by:

IC 7064 micro-P is defective.

The I2C clock line or data line is grounded. (LED

should blink indicating SW protection is active).

The IC 7064 reset circuit consisting of T7063, T7067

and T7069 and its surrounding components are

defective.

Measure pin-19 of connector 1010 (diagram A1). The

standby signal should be high (2V9). If not high, probably

this is caused by:

IC 7064 micro-P is defective (output port pin-13).

Transistor 7062 is defective.

Measure across C2913/C2933 (diagram A10). +8V3/+5V4

should be present respectively. If not present, probably this

is caused by: IC 7910/7930 regulator is defective.

Fuse 1903 is defective.

Switching FET 7900 is defective.

Transistor T7901 is defective.

Measure across C2007 (diagram C1). +5V should be

present. If not present, probably this is caused by:

+5V grounded by the load.

Regulator IC 7001 is defective.

Control transistor T7003/7002 is defective.

Scaler power control signal line (POW-CON-SCALER

coming from TV-board) is defective.

Measure pin-4 or pin-5 of connector 1402 (diagram C4).

Pin-4 should be high (+4V7) and pin-5 also should be high

(+3V4). If one/both of the voltage is not present, probably

this is caused by:

IC 7402 (JagASM) is defective.

Transistor 7403 is defective.

Inverter board is defective.

Measure pin-4 or pin-5 of connector 1402 (diagram C4).

Pin-4 should be high (+4V7) and pin-5 also should be high

(+3V4). If one/both of the voltage is not present, probably

this is caused by:

IC 7402 (JagASM) is defective.

Transistor T7403 is defective.

Inverter board is loading either of the voltage.

CL36532000_000.eps

011003

PC VCR I2CPower

9V DC

SERVICE

CONNECTOR

LCD PANEL

SpeakerassyR

SpeakerassyL

ToLCD

To

Inverter

ComPair


26/126


5.6.2 General Problems

TV switched off or changed channel without any user

action

Set switches off after TV SWITCHING OFF was displayed.

Auto Standby switched the set off because:

There was no ident signal for more than 15 minutes.

There was no remote control signal received or local key

pressed for > 2 hours.

See chapter 8 for a description on the options to enable/disable

Auto Standby.

5.6.3 Picture Problems

Picture too dark or too bright

Press Smart Picture button on the remote control. In case

the picture improves, increase / decrease the brightness

value or increase / decrease the contrast value. The new

Personal Preference value is automatically stored after 3

minutes.

After switching on the Customer Service Mode the picture

is OK. Increase / decrease the brightness value or increase

/ decrease the contrast value. The new PersonalPreference value is automatically stored after 3 minutes.

Snowy picture

Check the NOT TUNED section of the Customer Service

Mode screen.

Snowy picture and/or unstable picture

A scrambled or decoded signal is received.

Black and white picture


picture improves, increase the colour value. The new


minutes. After switching on the Customer Service Mode the picture

is OK. Increase the colour value. The new Personal

Preference value is automatically stored after 3 minutes.

Menu text not sharp enough


the picture improves, decrease the contrast value. The new


minutes.

After switching on the Customer Service Mode the picture

is OK. Decrease the contrast value. The new Personal


5.6.4 Sound Problems

No sound or sound too loud (after channel change /

switching on)

After switching on the Customer Service Mode the volume is

OK. Increase / decrease the volume level. The new Personal


5.6.5 Extra Information/Tips:

Complaints that may be caused by an incorrect system

setting:

No colours

Colours not correct

Unstable picture

Noise in pictureTo change the system setting of a preset:

1. Press the MENU button on the remote control

2. Select the INSTALL sub menu

3. Select the MANUAL STORE sub menu

4. Select and change the SYSTEM setting until

picture and sound are correct

5. Select the STORE menu item

When the set is in PC mode and there is no VGA signal

present at PC-in connector, the set will shutdown to

standby in couple of seconds after showing NO VIDEO

INPUT. This is a normal behaviour of the set to safe

power.

The Scaler is the driving engine of the LCD panel. When

there is no display and OSD on screen, check whether

sound is producible on TV channel. If sound is audible,

most likely the defective lies in Scaler board or inverterboard.

To know fast whether inverter is functioning, visually check

if the backlights are on by looking at the back of the LCD

panel. Some bright spots can be seen on the side. Other

way to tell whether the backlight is working is to switch the

set to AV mode. The front of the screen had some kind of

fogged effect.

Note:when one of the backlight connectors has loosened,

the inverter circuit will be shut down.

If the supply to the LCD panel is OK (likewise for backl ight

supply), but no data signals (example: signals on

connector 1506) supplied from Scaler to LCD panel, you

will notice that the LCD screen will shown full screen in

sequential of BLUE, GREEN, RED, BLANK, dark-GREY,

light-GREY and WHITE repeatedly. It means LCD panel is

in good condition. The fault lies in the Scaler board


27/126


28/126

28LC03E 6.Block Diagrams, Testpoint Overviews, and Wiring Diagram

Block Diagram (TV Control and Inverter Panel)

90

1 98

2

4

5

6

8

SDA-NVM

STATUS2_SVHS-RR-DET

STATUS1 (SCART)

KEYBOARD

9

10

13

14

15

16

STAND-BY +3V5

100

97

96

93

92

91

90

PC-TV-LED

HP-SIDE-DET

HIS-OFF

SOUND-ENABLE

89

88

85

86

87

84

82

81

83

80

79

SDA-0

SCL-0

78

76

75

73

70

17

18

22

23

24

25

26

27

28

29

31

32

33

36

37

38

39

40

45

46

47

48

49

67

66

65

64

63

59

55

54

5352

51

SYS1

SYS2

STBY-LED

CVBS-TXT-CC

G-SC1-IN_Y-IN

+3V5

B-TXT-OSD

G-TXT-OSD

R-TXT-OSD

HS-OSD

FBL-TXT-OSD

SEL-MAIN-R1R2

SEL-IF-LL_M-TRAP

+3V5

RC5

+3V5

30567053-A

VS-OSD30557053-B

SDA

SCL

A8

7066

NVM

A(14)

OENOT

WENOT

A(7)

A(6)

A(5)

A(4)

A(15)

A(13)

A(12)

CENOT

A(3)

A(2)

A(1)

A(0)

IO7

IO6

IO5

IO4

IO3

IO2

IO1

IO0

A(8)

A(10)

A(11)

A(16)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

171819202122232425262728303132

A(16)

A(15)

A(14)

A(13)

OENOT

IO7

IO6

IO5

IO4

IO0

A(11)

A(10)

A(9)

A(8)

A(7)

A(6)

A(5)

A(4)

WENOT

IO3

IO2

IO1

CENOT

A(3)

A(2)

A(1)

A(0)

7070

+3V5

FOR 100 PAGESTELETEXT ONLY

A 1 CONTROLS

7064 7

5

+3V5

A 2 MEMORY

CLOCK12MHZ

SCL-NVM

LIGHT-SENSOR_SDM

7062

NC

TV-IRQ

3037

PC-VSYNC

COMM-LINE

44SVHS-SIDE-DET

POWER-DOWN

3068

3034

7068

SEL-MAIN-FRNT-RR94

7022302995

COMM-LINE

A(12)+3V5

29

6

22

20

19

17

16

TO/FROM1681 OF

SCALER BOARD

14

13

12

10

9

7

5

3

1

PC-HDAUDIO-L

PC-HDAUDIO-R

STAND-BY

PC-HSYNC

PC-VSYNC

SDA-1

TV-IRQ

SCL-1

VS-OSD

HS-OSD

C-SYNC

B-DRIVE

G-DRIVE

R-DRIVE

A8

A5

A4

A4

A4

WC_

A11

A11

A9

A5

A5

A9

A4

A4

A4

A4

A11

A11

A6

A11

A6

A6

A11

A11

A11

A4

A10

A5

A5

307270697063

2043

6031

2057

7067

3070

3071

3083

3081

3082

(NOT FOR NTSC & LATAM)

VCC

A11

(SCART)

C 2

A(9)

8

V-SYNC

H-SYNC

A4

A5

Version 1.2 Final 03-03-19

1010

+

-

+12V

+5V

Vbri

ON/OFF

INVERTER (AMBIT)

ONLY FOR 15" & 17"

TO/FROM1402 OFSCALER

C 4

R10

U1D

L1

D3,8

Q8

C4,5R8

C3

Q2

Q1

R1 R5

R3

R4

3

12

10

11

13

CN1 6,7,8

1,2,3

4

5

F1

Q4-Q6

R7

D1,Q3

R6


29/126


30/126


I2C-ICs and Error Codes Overview

30853047

SDA-0

SCL-0

+3V5

SDA-1

SCL-1

A1

82

7064SAA5667

U-CONT

IF-VIDEOA4

301781

uPC8

37534

37547

3

2

IIC SDA

IIC SCL

3771

3770

11

13

RXD

TXD

RXD

TXD

RXD

TXD

3018

+3V5

3048

3769

+5

+5

+5

3768 3752

+5+5

3751

84

301983

12

15

3332

18

3331

17

7301TDA8845

BOCMA

VIDEOPROC.

ERR8

TUNERA3

PC-INC7

SRAMA2

3101

5 4

3100

1100TUNER

UR1316

7753PC251

uCSCALER

ERR13

7202M24C02-WMN6

EEPROM

720174HC4052D

DDCCTL

AUDIOPROCESSING

A8 COMBFILTER

A6

3621

2 1

3620

7620MSP3410G

AUDIODECODER

ERR14

VIDEODECODER

C3

3327

P10 N9

33

7302SAA7118E

VIDEODECODER

ERR23

5 6

7752M24C16

NVM

ERR25

ERR29

SDA-NVM

SCL-NVM

+3V5

3064 3065

DDC5V

3212 3211

3

13

2

15

1

12

TXD

RXD

DDCSDA

DDCSCL

1

78

7066M24C32(NVM)

EEPROM

ERR10,11

ERR12,29

ERR15

5 6

7070CY7C1019CV33

SRAM

Err

3216

3215

IIC

510

6

15

1 1

1

COMPAIR

CONNECTOR

FOR SERVICE

(REACHABLE VIA

HOLE IN REAR

COVER)

FORDEBUGGING

PURPOSE

1111

1

2

3

1426

5

6

1751

1

2

+3V3

3

4

5

B

1801CONNECTIONFOR3D COMBFILTER(OPTIONAL)

5

6

A1

1010

14

12

C2

1681

14

12

RESET

IIC SDA

FOR

DEBUGGINGPURPOSE

1752

1

2

IIC SCL

3

4

Error

0 1 - 34

5 6

7 8 9

1 0

11

12

13 14

15 16 17#

18 -21

22

23

24*

25

26 27

28

29 * = N

# =


31/126


32/126


Testpoint Overview TV Board (15/17)

3139 123 5592.4


33/126


34/126


Testpoint Overview Scaler Board

3139 123 5680.3


35/126

Block Diagrams, Testpoint Overviews, and Wiring Diagram 35LC03E 6.

Testpoint Overview TV Board (23)

3139 123 5682.2

F002 B4F003 C5F004 C5F006 C4F007 C4

F008 B5F010 C4F011 B4F012 C4F013 C4

F014 C5F015 C5F022 C4F025 C5F032 C5

F044 C4F045 B4F046 B4F054 C4F066 B5

F068 C4F070 A5F071 A5F072 A5F073 A5

F074 A5F075 A5F076 A4F077 A5F080 B4

F085 A4F101 B8F102 B7F103 B6F104 B6

F105 A8F106 C7F107 C7F108 C7F109 B8

F201 B8F202 C8F203 C8F204 C8F205 C8

F206 C8F207 C8F208 C8F209 D8F210 D8

F211 D7F212 D7F213 D6F214 D6F215 D6

F216 D6F217 D6F218 D8F219 D5F221 D6

F222 D5F223 D5F224 D6F225 D4F226 D4

F227 D5F228 D5F229 D5F230 D6F231 D5

F232 D7F233 D7F234 D7F235 D7F236 D7

F237 D7F238 D7F301 B5F302 A6F321 A5

F337 B5F338 A5F339 B5F340 B5F341 B5

F342 B5F345 A5F346 B5F349 B5F350 B5

F351 A5F352 A5F355 A5F358 A5F385 A6

F413 B5F426 C6F427 C6F428 C6F429 C6

F430 C6F431 C6F432 B6F470 B4F471 B5

F472 B5F473 B4F474 B4F476 A4F477 A5

F47F47F48F60F60


36/126


Wiring Diagram (15/17)

J Front LEDPanel1170_7P

A TV Board

1902

_4P

1010

_22P

C

1003

_4P

1681

_22P

1506_40P

1402

_8P

Scaler Board

IN

CN1_

8P

CN3_2P CN2_2P

CN4_2P CN5_2P

InverterPanel

D

0240

_11P

Side I/O Panel

E Top Control Panel1500_4P

RightSpeaker

TO LCD PANEL

TO

BACK

LIGHTS

TO

BACK

LIGHTS

LCD PANEL

Wiring Diagram 15" & 17"WS


37/126

Block Diagrams, Testpoint Overviews, and Wiring Diagram 37LC03E 6.

Wiring Diagram23 Inch Wide Screen

Right Speaker

J Front LEDPanel1170_7P

A TV Board

1231

7P

3225

11P

1234

4P

1111_3P

ComPair

1734_3P1

902_4P

1010_22P

C

1

003_4P

1681_22P

1506_40P1402_8P

Scaler Board

E Top Control Panel1500_4P

TO LCD PANEL

TOB

ACK

LIG

HTS

LCD PANEL

Wiring Diagram 23"WS

D Side I/O Pane

1732_4P


38/126


39/126

Circuit Diagrams and PWB Layouts 39LC03E 7.

TV Board: Memory for 100-pg Teletext

VCC

DQ

16

7

128K-10

A

12

CEWE

1413

11109

876543210

150

OE

VSS

MEMORY FOR 100-PG TELETEXT

3V3

3V3

3V3

3V3

3V5

0V3V3

0V

0V

3V5

3V40V

0V

0V0V

0V

0V0V3V3

0V

3V33V3

3V3A1

A1

A1

0V

0V

0V

0V

0V

(COMMON FOR EUROPE & AP-PAL)

3V5

1 2

1 2

A

B

C

A

B

C

2060 A1

2061 A2

5050 A2

7070 A2

1122232627

28

8 24

9 25

12

131415161718

5

6710

2

19202129303132

34

7070CY7C1019CV33

128Kx8RAM

1

100n2060

100n

+3V5

4u75050

2061

IO(4)IO(5)IO(6)IO(7)

A(0)

A(10)A(11)A(12)A(13)A(14)A(15)A(16)

A(2)A(3)A(4)A(5)A(6)A(7)A(8)A(9)

CENOT

WENOTOENOT

A(1)

IO(0)IO(1)IO(2)IO(3)

CL 36532023_005.eps150403

DIVERSITY TABLE DIAGRAM A1 AND A2

Item# Europe-/

12

Europe-/

58

NAFTA

AP-/

69

AP-N

TSC-/

61

La

tam

Component type20 60 - - - - -- C ER 2 06 03 X 7R 16 V 1 00 N C OL20 61 - - - - -- C ER 2 06 03 X 7R 16 V 1 00 N C OL30 28 - - - - - - R ST S M 0 60 3 47 K P M5 C OL

30 29 - - - - - - R ST S M 0 60 3 10 K P M5 C OL30 32 - - - - - - R ST S M 0 60 3 10 K P M5 C OL30 49 - - - - - - R ST S M 0 60 3 10 K P M5 C OL30 94 - - - - - - R ST S M 0 60 3 10 K P M5 C OL5 05 0 - - - - - - FXDIND S M 0 80 5 4 U7 P M1 0 COL R60 20 - - - - - - D IO S IG S M BA S3 16 ( CO L) R70 22 - - - - - - T RA S IG S M BC 84 7B W ( CO L) R7 06 4 - - - - - - IC S M S AA 56 67 HL /M1/ ( PHSE ) Y7064 - - - - - - - - - - IC SM SAA5645HL/M1 (PHSE) Y7 06 4 - - - - - - - - IC S M S AA 56 47 HL /M1 (P HS E) Y7 07 0 - - - - - - IC S M CY7 C1 01 9CV3 3- 15 ZC(CYP R) R

V V VV V VV V V

V V VV V VV V VV V VV V VV V VV V VV V V

V VV

VV

V

Personal Notes:


40/126

40LC03E 7.Circuit Diagrams and PWB Layouts

TV Board: Tuner Function

AS SCL SDA +5V ADC

MT

NC

TUNER FUNCTION

5V3

2V6

2V6

RES

7V1

DC/DC

(PENDING FOR 12NC)# LOCALLIB

0R

0R

RES

NC

TUNER

A1

A1

A8

COMPAIR

(15"/17"/23" SCART)

5V3

5V3

1V7

0V

0V

2V7

2V5

1V8

1V3

1V7

0V9

0V4

4V4

*

PAL / SECAM

NTSC / LATAM

* 1100UR1316UR1336

1 2 3 4 5 6 7

1 2 3 4 5 6 7

A

B

C

D

E

(NA used 6148)

(NA used 2142)

512212u

F109

BZX384-C336101

11111

2

3

50V

4101

5

6

7 8

9

210310u

+5V4

1100

1

10

11

12

13

14

15

2

3 4

270R3131

560R31352131

1n0

BFS20

7130

7131BFS20

2133

1n0

100n

21323134

100K

1n0

2130

820R

3133

100K

3132

1K2

3130

10V470u2108

10V470u

2106

7120

51201m

BC847BW

47R

3120

4n72121

4n72120

+5V4

6103

BAS316

6102

3101

3100F107

F1F108

210222p22p

2101

F102

F105

100n2107

F101

F104

F103210447n

3103

1K0

3102

10K

SCL-0

SDA-0

SIF-FM

F104

500mV / div DC20s / div

F107

1V / div20s /

Item# Europe

-/12&-/58

NAFTA

AP-/61&Latam

AP-/69

Component type1 10 0 - - - - TU NE R UR 13 16 /A I H -31 10 0 - - - - TU NE R UR 13 36 /A F S H- 32108 - - - - - - ELCAP 6V3 S 470U PM20 COL A2108 -- ELCAP 25V S 100U PM20 COL A2109 - - - - F IL CER 39MHZ75 MKTGA* BS A3 10 2 - - - - RS T S M 0 60 3 1 0K P M5 COL3 10 2 - - - - RS T S M 0 60 3 JUMP. 0R0 5 C OL3 10 3 - - - - RS T S M 0 60 3 1 K5 P M5 COL3 10 3 - - - - RS T S M 0 60 3 2 K2 P M5 COL3 13 6 - - - - RS T S M 0 60 3 10 0R P M5 COL6 10 2 - - - - DI O S IG SM B AS3 16 ( COL ) R

V V

V

V V

V V

V V

V V

V VV V

V V

V VV V

V


41/126


42/126


43/126


44/126


TV Board: Audio Delay Line

C2

G1

1+

CT=0

CTR8

(CT=255)Z4

2D 3

4

EN3

EN

C1

1D

C2

G1

1+

CT=0

CTR8

(CT=255)Z4

2D 3

4

EN3

2V6

2V6

2V6

2V6

2V6

5V3

5V3

2V6

2V5

2V3

2V6

(1) NOT USED

(1)

(1)

(1)

2V6

2V6

DF

3

A

5V3

B

C

D

5V3

5V3

2V6

F

DFF

(COMMON)

E

2V3

2V3

AUDIO DELAY LINE

41 2 3

COUNTER

2V6

2

2V3

2V6

5 6 7

1

2V5

2V5

5V3

2V5

2V5

2V5

2V3

2V3

5V3

2V5

2V5

COUNTER

2V3

0V2

5V3

4 5 6 7

2V6

2V6

2V6

GNDDIGITAL

2604

100n

4601

+5VD

2

3

4

5

6

7

13

9

VCC16

7602

TC74HC590AF

11

12

10

GND8

14

15

1

11

I|O1

12

I|O2

13

I|O3

15

I|O4

16

I|O5

17

I|O6

18

I|O7

19

OE

_

22

VCC2

8 W

E_

27

+5VD

6A11

7A12

8A13

9A14

10

A2

24

A3

25

A4

26

A5

1A6

2A7

3A8

4A9

5

CE

_

20

GND 1

4I|O0

GNDDIGITA

7603CY62256

A0

21

A1

23

A10

GNDDIGITAL

+5VD

+5V4

BC847BW7610

GNDDIGITAL

GNDDIGITAL

4602

GNDDIGITAL

GNDDIGITALGNDDIGITAL

GNDDIGITAL

VCC16

12

10

GND8

14

15

1

2

3

4

5

6

7

13

9

+5VD

+5VD

7601

TC74HC590AF

11

2610

82pGNDDIGITAL

3610470R

100n

2603

4603

4605

GNDDIGITAL

100n

2601

GNDDIGITAL

GNDDIGITAL

GNDDIGITAL

5601

1u0

F612

+5VD

100n

+5VD

GNDHOT

2602

+5VD

4606

GNDDIGITAL

GNDDIGITAL

1514

13

12

20

F613

7

8

9

10

11

1

19

18

17

16

2

3

4

5

6

74HCT573D7604

5

67

8

9

11

1

7605

2

3

4

F601

74HC

GNDDIGITAL

82p2611 3611

47K

4604

GNDDIGITALGNDDIGITAL

F602

2V / d2ms


45/126


46/126


TV Board: Audio Amplifier 2x3 Watts (15/17)

F732

50

10u2750

2V9

0V7

0V

3V5

YES

YES

11V8

RES

A1

ITV

A8

A8

6V1

(15"/17")

4740

2V9

A8

A10

*

47391750*

*

XX

*

XMTV

AUDIO AMPLIFIER 2x3 Watts

3V5

3V3

X

A11

4 5 6 7

0V

1 2 3 4 5 6 7

1 2 3

X

B

A

YES QUAD 2-INPUT AND GATE

47384737

1V4

2V7

X

YES

RES

YES

3V5

*

YES

6V1 *

A1

3V3

A11

1752

A11

2V9

1V4

*

3V5

5V3

2V3

3V5

6V2

3V5

37416K8

FOR ITV

HMLINK

A11A11

6V1

C

D

E

F1K0

3743

BC847BW7744

1K0

3759

1n0

2735

27K

3735

10K

3757

2734

2752 10u

50

16V1m0

120R3750

4

3 6

1702

SPPH4

2 5

1

27571n51n5

275627581n5

1u0

2736

220K

4737

3732

573322u

4739

F731

F735

+3V5

3755100R

12-24DC-SUP_1

37567732-C74LCV08AD

9

108

14

7

1752

1750

F743

BZX284-C6V86732

1u0

2741

YKC21-34161733

1

3

2

GNDEARTH

CH2-IN

3GNDCH1

11GNDCH2

7GNDINP

5

STB

1

VCC

9 VOL

2CH1+

4CH1-

6 CH1-IN

12CH2+

10CH2-8

14

7

7731AN7522N

7732-D74LCV08AD

12

1311

1n52754

50V100u2745

50V10u2732

27424n7

1K0

3746

GNDHOT

2740

1n0

23

456

12321

4738

27K

3740

3

14

7

3K33745

7732-A74LCV08AD

1

2

27551u0

2746

2737

50V1u0

4n7

F755

4740

BZX284-C6V86731

3733

+3V5

7756BC847B

4

56

14

7

1730

7732-B74LCV08AD

F740

220n2733

33n

2731

BAS316

6755

F745

470R3752

4K73744

37584K7

+3V5

37366K8

POWER-DOWN

STAND-BY

LED_IN

STBY-LED

STATUS

IR_OUT

IR_IN

AUD_SW

SOUND-ENABLE

AUDIO-L

AUDIO-R

A9a


47/126

Circuit Diagrams and PWB Layouts 47LC03E 7.

TV Board: Audio Amplifier 2x5 Watts (23)

ATT.CON

RIPPLE

ATT.

FILTER

AUDIO AMPLIFIER 2x5 WattsA9b

6V

3V7

6V2

2V9

0V3

5V2

6V1

*

*

*

RES

RES

*

*

A1

A10

A1

A8

A8

A8

QUAD 2-INPUT AND GATE

(23")

A11A11

A11A11

A11

FOR ITV

NC

NC

HMLINK

0V

3V5

0V

0V73V5

2V3

2V9

2V3

2V9

3V5

3V5

2V3

5V3

3V5

3V5

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

A

B

C

D

E

F

RES

RES

27971n0

1n02796

2798220n

12-24DC-SUP_1

BC847BW7745

1K0

3746

4K73745

6732

BZX284-C6V86731

BZX284-C6V8

1730

27441n5

2743

2747

1n5

+3V5

33n

1K0

3739

BC847B7739

50V100u2799

50V330u2739

GN

50V330u2738

12321234

56

1 4

3 6

1702

SPPH4

2 5

YKC21-34161733

1

3

2

1u0

2741

1u0

2736

5733

22u

F735

F740

+3V5

4K73744

BC847BW7744

F743

F759

F755

3755

100R

F731

F745

F732

50V1u02746

4740

+3V5

1K0

3743

7732-D74LCV08AD

12

1311

14

7

6

14

7

7732-C74LCV08AD

9

10

8

14

7

1

23

14

77732-B

74LCV08AD4

5

1752

7732-A74LCV08AD

1750

8K2

3748

4K73747

25V100u

2745

BAS316

6755

+3V5

27551u0

7756BC847B

3756 10K

3757

1K0

3759

1K0

3761

37584K7

4K73760

470R3752

470R3750

4738

4739

9

GNDO

8

MUTE

1

NC1

6

NC2

3

RF

11

STBY

10

VCC

2

CH1I

12

CH1O

5

CH2I

7

CH2O

4

GNDI

7731AN5277

35V1m02734

50V10u2732

12-24DC-SUP_1

2740

2735

3733

2737

27423n3

18K

3740

3n3

18K

3735

37413K3

37363K3

3799

220K

LED_INIR_INSTBY-LEDSTATUS

IR_OUT

AUDIO-L

SOUND-ENABLE

POWER-DOWN

STAND-BY

O

AUDIO-R

AUD_SW

HP-


48/126


TV Board: Local Supply

REGULATORREFERENCE

OSC

IPK

Q

R

S

REGULATORREFERENCE

OSCIPK

Q

R

S

REGULATORREFERENCE

OSC

IPK

Q

R

S

LOCAL SUPPLY

100MHz 220R

1%

1%

1%

1%

1%

1%

RES

RES

RES

RES

RES

RES

A9

A1,A9

FROM/TO

(COMMON)

11V9

2

3

1

11V9

6V

0V

2V9

0V5

0V

2V3

11V

11V1

1V3

11V

3V6

0V7

11V7

11V8

1V2

0V7

5V5

11V7

11V7

11V8

1V2

11V7

8V4

0V7

1 2 3 4 5 6 7

1 2 3 4 5 6 7

A

B

C

D

E

F

1003 OFSCALER PNL

STAND-BY

POWER-DOWN

100n

3

4

2922

1902

1

2F902

F901

12-24DC-SUP

F900

12u

5900

2934 4n7

2912

4n72924

4n72914

1903

F1600mA

3925

10R

F908

SS14

6925

F906

F9073933

F903

3K3

+3V5

BC847B7904

BC847B7903

290310n

390622K

3905220K

15K3903

3TIMC

6VCC

220K3904

MC34063A

7920

5 CIN-

8 DCOL

4GND

7 IS

Philips Chasis LC03E

Documents

Transcript of Philips Chasis LC03E