Philips LC4.1E-AB Service manual

Colour Television Chassis

LC4.1E

AB

E_14520_000.eps

170904

Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis
Overview 2

2. Safety Instructions, Warnings, and Notes 5

3. Directions for Use 7

4. Mechanical Instructions 8

5. Service Modes, Error Codes, and Fault Finding 10

6. Block Diagrams, Testpoint Overviews, and

Waveforms

Wiring Diagram 17
Block Diagram Audio & Video 18
Block Diagram Scaler & Supply 19
Testpoint Overview SSB (Top Side) 20
Testpoint Overview SSB (Bottom Side) 21
Testpoint Overview Front IR / LED Panel 22
I2C Overview 23
Supply Voltage Overview 24

7. Circuit Diagrams and PWB Layouts Drawing PWB
SSB: Tuner + VIF (B1) 25 35-36
SSB: Hercules (B2)26 35-36
SSB: Hercules (B3)27 35-36
SSB: Audio Amplifier + Processing (B4)28 35-36
SSB: TV Supply (B5) 29 35-36
SSB: Scaler (B6)30 35-36
SSB: Scaler (B7)31 35-36
SSB: Scaler I/O (B8)32 35-36
SSB: Supply (B9) 33 35-36
SSB: Rear I/O Scart (B10) 34 35-36
Side I/O Panel (D) 37 38
Keyboard Control Panel (E)39 39
Top Control Panel (E)40 40
Audio Amplifier (I) 41 42
Front IR / LED Panel (J)43 43

8. Alignments 45

9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets 52
Abbreviation List 56
IC Data Sheets 58

10. Spare Parts List 61

11. Revision List 64

©

Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.

Published by BB 0566 TV Service Printed in the Netherlands Subject to modification EN 3122 785 15310

EN 2 LC4.1E AB1.

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1.1 Technical Specifications

1.2 Connection Overview

1.3 Chassis Overview

Notes:

• Figures can deviate due to the different set executions.

• Specifications are indicative (subject to change).

1.1 Technical Specifications

1.1.1 Vision

Display type : LCD, IPS / LCD, TN
Screen size : 15” (38 cm), 4:3

: 17” (43 cm), 16:9
: 20” (51 cm), 4:3
: 20” (51 cm), 16:9

Resolution (HxV pixels) : 640x480

Contrast ratio : 350/500/600:1
Light output (cd/m

2

) : 450
Response time (ms) : 16/25
Viewing angle (HxV degrees) : 130x100

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

Video playback : NTSC M/N 3.58, 4.43

Supported computer formats : VGA (640x480)

Supported video formats : 640x480i - 1fH

Presets/channels : 100 presets
Tuner bands : VHF

: 23” (58 cm), 16:9

: 1024x768
: 1280x768
: 1366x768

: 140x120
: 176x176

: SECAM B/G, D/K, L/L’
: NTSC M/N 3.58

: PAL B/G
: SECAM L/L’

: VGA (720x400)
: VGA (640x350)
: MAC (640x480)
: MAC (832x624)
: SVGA (800x600)
: XVGA (1024x768)
: WXGA (1280x768)

: 720x576i - 1fH
: 1920x1080i - 2fH
: 1280x720p - 3fH

: UHF
: S-band

: Hyper-band
: FM-radio (depending

on model)

- Mains frequency (Hz) : 50 / 60

Ambient conditions:

- Temperature range (°C) : +5 to +45

- Maximum humidity : 90% R.H.

Power consumption (values are indicative)

- Normal operation (W) : ≈ 42/53/55/80/92

- Stand-by (W) : < 1/1.5/3

Dimensions (WxHxD cm) : 46.7x30.7x6.9

: 47.2x30.8x7.65
: 51.7x30.2x8
: 58.3x38.6x8.7
: 61.8x32.5x9
: 71.6x37.5x9.8

Weight (kg) : 5.8/6/8.8/10.2

1.2 Connection Overview

Note: The following connector colour abbreviations are used

(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=
Grey, Rd= Red, Wh= White, and Ye= Yellow.

1.2.1 Front / Side Connections

HEADPHONE

AUDIO R IN

AUDIO L IN

VIDEO IN

S-VIDEO

DVI
AUDIO IN

F_15310_032.eps

270605

Figure 1-1 Side I/O

1.2.2 Rear Connections

ComPair

CONNECTOR

FM ANT SCART 1AERIAL IN DVI

F_15310_031.eps

270605

1.1.2 Sound

Sound systems : FM-mono

Maximum power (W

) : 2 x 2 / 2 x 5

RMS

1.1.3 Miscellaneous

Power supply:

- Mains voltage (V

) : 90 - 240

AC

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

Figure 1-2 Rear I/O

Aerial - In

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

Aerial: FM Radio

- - IEC-type Coax, 75 ohm D

Cinch: Video CVBS - In, Audio - In

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

/ 75 ohm jq

PP

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

Technical Specifications, Connections, and Chassis Overview

EN 3LC4.1E AB 1.

S-Video (Hosiden): Video Y/C - In

1 -Ground Y Gnd H
2 -Ground C Gnd H
3 - Video Y 1 V
4 - Video C 0.3 V

/ 75 ohm j

PP

P / 75 ohm j

PP

Mini Jack: Audio Head phone - Out

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

Service Connector (ComPair)

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

2

C Data (0 - 5 V) jk

2

C Clock (0 - 5 V) j

3 - Ground Gnd H

Service Connector (UART)

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

Mini jack: DVI Audio - In

1 - Audio - R jq
2 - Audio - L jq
3 - Ground Gnd H

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

20

2

5-D4+ j
6 - DDC_SCL DDC clock k
7 - DDC_SDA DDC data jk
8-n.c.
9-D1- j
10 - D1+ j
11 - Shield Gnd H
12 - D3- j
13 - D3+ j
14 - +5V j
15 - Ground Gnd H
16 - HPD Hot Plug Detect j
17 - D0- j
18 - D0+ j
19 - Shield Gnd H
20 - D5- j
21 - D5+ j
22 - Shield Gnd H
23 - CLK+ j
24 - CLK- j

DVI-I: Digital/Analogue Video - In (depending on model)

18
916

17

C1 C2

C5

24

C3 C4

E_06532_004.eps

050404

Figure 1-5 DVI-I connector

21

E_06532_001.eps

1

050404

Figure 1-3 SCART connector

1 - Audio R 0.5 V
2 - Audio R 0.5 V
3 - Audio L 0.5 V
4 - Ground Audio Gnd H

/ 1 kohm k

RMS

/ 10 kohm j

RMS

/ 1 kohm k

RMS

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

/ 10 kohm j

RMS

/ 75 ohm jk

PP

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3 j

9 - Ground Green Gnd H
10 - n.c.
11 - Video Green 0.7 V
12 - n.c.

/ 75 ohm j

PP

13 - Ground Red Gnd H
14 - Ground P50 Gnd H
15 - Video Red/C 0.7 V

/ 75 ohm j

PP

16 - Status/FBL 0 - 0.4 V: INT

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

/ 75 ohm k

PP

/ 75 ohm j

PP

1-D2- j
2-D2+ j
3 - Shield Gnd H
4-D4- j
5-D4+ j
6 - DDC_SCL DDC clock k
7 - DDC_SDA DDC data jk
8 - V-sync 0 - 5 V j
9-D1- j
10 - D1+ j
11 - Shield Gnd H
12 - D3- j
13 - D3+ j
14 - +5V j
15 - Ground Gnd H
16 - HPD Hot Plug Detect j
17 - D0- j
18 - D0+ j
19 - Shield Gnd H
20 - D5- j
21 - D5+ j
22 - Shield Gnd H
23 - CLK+ j
24 - CLK- j
C1 - Video Red 0.7 V
C2 - Video Green 0.7 V
C3 - Video Blue 0.7 V
C4 - H-sync 0 - 5 V j

/ 75 ohm j

PP

/ 75 ohm j

PP

/ 75 ohm j

PP

C5 - Ground Gnd H

DVI-D: Digital Video - In (depending on model)

18
916

17

C5

24

E_06532_003.eps

050404

Figure 1-4 DVI-D connector

1-D2- j
2-D2+ j
3 - Shield Gnd H
4-D4- j

EN 4 LC4.1E AB1.

1.3 Chassis Overview

Technical Specifications, Connections, and Chassis Overview

FRONT IR / LED

J

PANEL

POWER SUPPLY
UNIT

Figure 1-6 PWB locations (depending on model)

TOP CONTROL PANEL

LCD PANEL

TV & SCALER

BOARD

AMPLIFIER

PANEL

SIDE IO PANEL

F_15310_033.eps

E

B

I

D

270605

Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

EN 5LC4.1E AB 2.

Index of this chapter:

2.1 Safety Instructions

2.2 Warnings

2.3 Notes

2.1 Safety Instructions

Safety regulations require the following during a repair:

• Connect the set to the Mains/AC Power via an isolation

transformer (> 800 VA).

• Replace safety components, indicated by the symbol h,

only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.

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

• Route the wire trees correctly and fix them with the

mounted cable clamps.

• Check the insulation of the Mains/AC Power lead for

external damage.

• Check the strain relief of the Mains/AC Power cord for

proper function.

• Check the electrical DC resistance between the Mains/AC

Power plug and the secondary side (only for sets that have
a Mains/AC Power isolated power supply):

1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug.

2. Set the Mains/AC Power switch to the "on" position
(keep the Mains/AC Power cord unplugged!).

3. Measure the resistance value between the pins of the
Mains/AC Power plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 Mohm and 12 Mohm.

4. Switch "off" the set, and remove the wire between the
two pins of the Mains/AC Power plug.

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

2.2 Warnings

Service Default Mode (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz for PAL, or

61.25 MHz for NTSC (channel 3).

• Where necessary, measure the waveforms and voltages

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

• The semiconductors indicated in the circuit diagram and in
the parts lists, are interchangeable per position with the
semiconductors in the unit, irrespective of the type
indication on these semiconductors.

2.3.2 Schematic Notes

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

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

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

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

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

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

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.

-9

), or pico-farads (p= x10

-12

-6

),

).

• 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

Device Removal

As is the case with any component that, is being removed, it is
essential when removing an (LF)BGA, that the board, tracks,
solder lands, or surrounding components are not damaged. To
remove an (LF)BGA, the board must be uniformly heated to a
temperature close to the reflow soldering temperature. A
uniform temperature reduces the risk of warping the PWB.
To do this, we recommend that the board is heated until it is
certain that all the joints are molten. Then carefully pull the
component off the board with a vacuum nozzle. For the
appropriate temperature profiles, see the IC data sheet.

Area Preparation

When the component has been removed, the vacant IC area
must be cleaned before replacing the (LF)BGA.
Removing an IC often leaves varying amounts of solder on the
mounting lands. This excessive solder can be removed with
either a solder sucker or solder wick. The remaining flux can be
removed with a brush and cleaning agent.
After the board is properly cleaned and inspected, apply flux on
the solder lands and on the connection balls of the (LF)BGA.
Note: Do not apply solder paste, as this has been shown to
result in problems during re-soldering.

Device Replacement

The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be

EN 6 LC4.1E AB2.

Safety Instructions, Warnings, and Notes

aligned under a microscope or magnifying glass. If this is not
possible, try to align the (LF)BGA with any board markers.
So as not to damage neighbouring components, it may be
necessary to reduce some temperatures and times.

More Information

For more information on how to handle BGA devices, visit this
URL: www.atyourservice.ce.philips.com (needs subscription,
not available for all regions). After login, select “Magazine”,
then go to “Workshop Information”. Here you will find
Information on how to deal with BGA-ICs.

2.3.4 Lead-free Solder

Philips CE is producing lead-free sets (PBF) from 1.1.2005
onwards.

Identification: The bottom line of a type plate gives a 14-digit
serial number. Digits 5 and 6 refer to the production year, digits
7 and 8 refer to production week (in example below it is 1991
week 18).

Figure 2-1 Serial number example

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

P

b

Figure 2-2 Lead-free logo

E_06532_024.eps

230205

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

• Special information for lead-free BGA ICs: these ICs will be
delivered in so-called "dry-packaging" to protect the IC
against moisture. This packaging may only be opened
shortly before it is used (soldered). Otherwise the body of
the IC gets "wet" inside and during the heating time the
structure of the IC will be destroyed due to high (steam-)
pressure inside the body. If the packaging was opened
before usage, the IC has to be heated up for some hours
(around 90°C) for drying (think of ESD-protection!).
Do not re-use BGAs at all!

• For sets produced before 1.1.2005, containing leaded
soldering tin and components, all needed spare parts will
be available till the end of the service period. For the repair
of such sets nothing changes.

In case of doubt whether the board is lead-free or not (or with
mixed technologies), you can use the following method:

• Always use the highest temperature to solder, when using
SAC305 (see also instructions below).

• De-solder thoroughly (clean solder joints to avoid mix of
two alloys).

Caution: For BGA-ICs, you must use the correct temperature­profile, which is coupled to the 12NC. For an overview of these
profiles, visit the website www.atyourservice.ce.philips.com
(needs subscription, but is not available for all regions)
You will find this and more technical information within the
"Magazine", chapter "Workshop information".
For additional questions please contact your local repair help
desk.

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 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.

Due to lead-free technology some rules have to be respected
by the workshop during a repair:

• Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.

• Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able:
– To reach a solder-tip temperature of at least 400°C.
– To stabilise the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.

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

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

3. Directions for Use

You can download this information from the following websites:

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

Directions for Use

EN 7LC4.1E AB 3.

EN 8 LC4.1E AB4.

Mechanical Instructions

4. Mechanical Instructions

Index of this chapter:

4.1 Service Position

4.2 Rear Cover Removal

4.3 Power Supply Unit Removal

4.4 Small Signal Board Removal

4.5 Side I/O Panel Removal

4.7 LED/IR Panel Removal

4.8 Audio Amplifier Panel Removal

4.9 Exchanging the LCD Panel

4.10 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.
To access the ComPair connector, proceed with the following:

1. Manually unlock and remove the cover cap.

2. Remove the tape shielding that covers the ComPair
connector (1).

Note: Make sure that both the ComPair connector and the
UART connector are shielded off with a piece of insulating tape
after repair for ESD reasons. Place this tape over the holes in
the rear cover of the set.

4.2 Rear Cover Removal

1

Figure 4-3 Rear cover removal

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

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

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

E_14520_035.eps

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Figure 4-1 ComPair connector

4.1 Service Position

4.1.1 Foam Bars

Figure 4-2 Foam bars

1

E_14520_034.eps

160904

E_06532_018.eps

170504

4.3 Power Supply Unit Removal

1

Figure 4-4 Power supply unit (depending on model)

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.

E_14520_036.eps

160904

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.

Mechanical Instructions

EN 9LC4.1E AB 4.

4.4 Small Signal Board Removal

1

2

Figure 4-5 Small signal board removal

1. Disconnect all cables from the Smal signal board.

2. Remove the screw from the grounding cable (1).

3. Remove the two fixation screws from the DVI connector.

4. Remove the mounting screw (2) and remove the board.

4.5 Side I/O Panel Removal

E_14520_037.eps

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4.8 Audio Amplifier Panel Removal

1

2

E_14520_039.eps

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Figure 4-7 Audio amplifier panel removal (depending on model)

1. Disconnect all cables from the audio amplifier panel.

2. Remove all mounting screws from the audio amplifier panel
(1).

3. Unlock the panel by twisting back the clamp at the bottom
(2).

4. Take out the audio amplifier panel.

1

2

Figure 4-6 Side I/O panel removal

1. Disconnect all cables from the Side I/O panel.

2. Remove the mounting screw (1).

3. Unlock the panel by twisting back the clamp at the bottom
(2).

4. Take out the Side I/O panel from the bracket.

4.6 Top Control Panel Removal

1. Disconnect the cable from the top control panel.

2. Remove the two mounting screws from the top control
panel.

3. Take out the top control panel.

4.7 LED/IR Panel Removal

1. Unlock the panel by pushing against one of the fixation
clamps and remove the panel.

2. Disconnect the cable from the LED/IR panel.

E_14520_038.eps

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4.9 Exchanging the LCD Panel

1

Figure 4-8 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.

4.10 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 smal signal
board, while mounting the screw at the board topside. See
figure “Smal signal board removal”.

E_14520_040.eps

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EN 10 LC4.1E AB5.

Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Problems and Solving Tips Related to CSM

5.4 Service Tools

5.5 Error Codes

5.6 The Blinking LED Procedure

5.7 Fault Finding and Repair Tips

5.1 Test Points

This chassis is equipped with test points in the service printing.
In the schematics test points are identified with a rectangle box
around Fxxx or Ixxx. 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 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").

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 small signal board during
cold start and apply mains (see Figure "Service jumpers").
Then press the mains button (remove the short after start­up).
Caution: Entering SDM by shorting "Service" jumpers will
override the +5V-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.

1

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Figure 5-1 Service jumpers

After entering SDM, the following screen is visible, with SDM in
the upper right corner of the screen to indicate that the
television is in Service Default Mode.

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).

00022 LC4CEP1 1.05/S4CEX1 1.06 SDM
ERR 0 0 0 0 0
OP 000 057 140 032 120 128 000

F_15310_001.eps

200605

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.

Service Modes, Error Codes, and Fault Finding

EN 11LC4.1E AB 5.

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.

00022 LC4CEP1 1.05/S4CEX1 1.06 SAM
ERR 0 0 0 0 0

• 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.

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.

OP 000 057 140 032 120 128 000

. Clear Clear ?
. Options
. Tuner
. White Tone
. Audio
. NVM Editor
. SC NVM Editor
. ComPair Mode On

F_15310_002.eps

200605

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. AAABCD-X.Y. This is the software identification of the
main microprocessor:
– A= the project name (LC41).
– B= the region: E= Europe, A= Asia Pacific, U= NAFTA,

L= LATAM.

– C= the software diversity:

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.

EN 12 LC4.1E AB5.

Service Modes, Error Codes, and Fault Finding

5.2.3 Customer Service Mode (CSM)

Purpose

The Customer Service Mode shows error codes and
information on the TV’s operation settings. The call centre can
instruct the customer (by telephone) to enter CSM in order to
identify the status of the set. This helps the call centre to
diagnose problems and failures in the TV set before making a
service call.
The CSM is a read-only mode; therefore, modifications are not
possible in this mode.

How to Enter

To enter CSM, press the following key sequence on the remote
control transmitter: “123654” (do not allow the display to time
out between entries while keying the sequence).

Upon entering the Customer Service Mode, the following
screen will appear:

1 00022 LC4CEP1 1.05/S4CEX1 1.06 CSM
2 CODES 0 0 0 0 0

3 OP 000 057 140 032 120 128 000
4 20PF8846/12
5
6 NOT TUNED
7 PAL
8 STEREO
9 CO 50 CL 50 BR 50
0 AVL Off

5.3 Problems and Solving Tips Related to CSM

5.3.1 Picture Problems

Note: The problems described below are all related to the TV

settings. The procedures used to change the value (or status)
of the different settings are described.

Picture too Dark or too Bright

If:

• The picture improves when you press the AUTO PICTURE
button on the remote control transmitter, or

• The picture improves when you enter the Customer
Service Mode,

Then:

1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.

5. Use the MENU UP/DOWN keys (if necessary) to select
BRIGHTNESS.

6. Press the MENU LEFT/RIGHT keys to increase or
decrease the BRIGHTNESS value.

7. Use the MENU UP/DOWN keys to select PICTURE.

8. Press the MENU LEFT/RIGHT keys to increase or
decrease the PICTURE value.

9. Press the MENU button on the remote control transmitter
twice to exit the user menu.

10. The new PERSONAL preference values are automatically
stored.

F_15310_003.eps

200605

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.

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.

Service Modes, Error Codes, and Fault Finding

EN 13LC4.1E AB 5.

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 Service Tools

5.4.1 ComPair

Introduction

ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:

1. ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.

2. ComPair allows very detailed diagnostics (on I
is therefore capable of accurately indicating problem areas.
You do not have to know anything about I
yourself because ComPair takes care of this.

3. ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the Force/SearchMan electronic manual of the defective
chassis, schematics and PWBs are only a mouse click
away.

2

C level) and

2

C commands

Specifications

ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
(or RS-232) cable.
For this chassis, the ComPair interface box and the TV
communicate via a bi-directional service cable via the service
connector(s).

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

• Automatically (by communicating with the television):
ComPair can automatically read out the contents of the
entire error buffer. Diagnosis is done on I
ComPair can access the I
ComPair can send and receive I

2

C/UART bus of the television.

2

2

C/UART level.

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

2

C/UART buses of the TV-set.

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

screen give a picture? Click on the correct answer: YES /
NO) and showing you examples (e.g. Measure test-point I7
and click on the correct oscillogram you see on the
oscilloscope). You can answer by clicking on a link (e.g.
text or a waveform picture) that will bring you to the next

step in the fault finding process.

By a combination of automatic diagnostics and an interactive
question / answer procedure, ComPair will enable you to find
most problems in a fast and effective way.

How to Connect

This is described in the chassis fault finding database in
ComPair.

TO

UART SERVICE

CONNECTOR

PC VCR I2CPower

9V DC

E_06532_021.eps

TO

I2C SERVICE

CONNECTOR

180804

Figure 5-5 ComPair interface connection

How to Order

• ComPair order codes (EU/AP/LATAM):

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

• ComPair interface (excl. transformer): 4822 727 21631.

• Starter kit ComPair32 software (registration version): 3122
785 60040.

• Starter kit SearchMan32 software: 3122 785 60050.

• ComPair32 CD (update): 3122 785 60070 (year 2002),
3122 785 60110 (year 2003 onwards).

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

• ComPair firmware upgrade IC: 3122 785 90510.

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

• Transformer (UK): 4822 727 21633.

• ComPair interface cable: 3122 785 90004.

• ComPair interface extension cable: 3139 131 03791.

• ComPair UART interface cable: 3122 785 90630.

EN 14 LC4.1E AB5.

Service Modes, Error Codes, and Fault Finding

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

5.4.2 LVDS Tool

Introduction

This service tool (also called “ComPair Assistant 1“) may help
you to identify, in case the TV does not show any picture,
whether the Small Signal Board (SSB) or the display of a Flat
TV is defective.
Furthermore it is possible to program EPLDs with this tool (Byte
blaster). Read the user manual for an explanation of this
feature.

Since 2004, the LVDS output connectors in our Flat TV models
are standardised (with some exceptions). With the two
delivered LVDS interface cables (31p and 20p) you can cover
most chassis (in special cases, an extra cable will be offered).

When operating, the tool will show a small (scaled) picture on
a VGA monitor. Due to a limited memory capacity, it is not
possible to increase the size when processing high-resolution
LVDS signals (> 1280x960). Below this resolution, or when a
DVI monitor is used, the displayed picture will be full size.

Generally this tool is intended to determine if the SSB is
working or not. Thus to determine if LVDS, RGB, and sync
signals are okay.

How to Connect

Connections are explained in the user manual, which is packed
with the tool.

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.
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

Note: To use the LVDS tool, you must have ComPair release

2004-1 (or later) on your PC (engine version >= 2.2.05).
For every TV type number and screen size, one must choose
the proper settings via ComPair. The ComPair file will be
updated regularly with new introduced chassis information.

How to Order

• LVDS tool (incl. two LVDS cables: 31p and 20p):
3122 785 90671.

• LVDS tool Service Manual:
3122 785 00810.

• LVDS cable 30p (for LC4.3):
3122 785 90820 (available soon).

• LVDS cable 41p -> 31p for HD PDPs (dual -> single LVDS):
3122 785 90830 (available soon).

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.

Error Device Error description Check item Diagram

0 Not applicable No Error

1 Not applicable - - -

2 Not applicable - - -

3 Not applicable - - -

4 GM5221 I2C error while communicating

5 Not applicable +5v protection 7930 A6

6 I2C bus General I2C error 7011, 3083,

7 Not applicable - - -

8 M24C32 I2C error while communicating

9 M24C16 I2C error while communicating

10 Tuner I2C error while communicating

11 Not applicable - - -

12 Not applicable - - -

13 Not applicable - - -

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

with the Scaler EEPROM

with the EEPROM

with the PLL tuner

7401
7403

3084

7402 A7

7099 A2

1302, 3302,
3303, 3327

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,

A6

A2

A1

Service Modes, Error Codes, and Fault Finding

EN 15LC4.1E AB 5.

• 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 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.

5.7.3 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.

No TV but PC is Present

1. Check if HSYNC and VSYNC are present at PIN 3 of 7007
and 7005.

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.

5.7.4 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%

Power Supply is Correct But no Green Light

1. Check the two connectors 1007 and 1008, 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 pin 3 of IC7006 (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 IC7006 (NE555).

EN 16 LC4.1E AB5.

Personal Notes:

Service Modes, Error Codes, and Fault Finding

E_06532_012.eps

131004

Block Diagrams, Testpoint Overviews, and Waveforms

6. Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram

TOP CONTROL

E

17LC4.1E AB 6.

1308

2P

LCD SCREEN
(LVDS) CONNECTION

TTL

Rigth

Speaker

BACK

LIGHT

CONNECTION

LCD SCREEN

INVERTER

1200

12P

B

SSB

TUNER

1910 1206

12P

1007

1701

3P

7011 7401

5P

2P6P

1008

1402

1401

4P

1951

Left

Speaker

AUDIO AMPLIFIER

I

(5W)

5P

40P

1010

10P

1704

5P

1706

5P

1703

2P

FOR 2x5W

6P

1870

J

FRONT
IR/LED

BACK

LIGHT

CONNECTION

LCD SCREEN

POWER

IN

1001

FOR 2x2W

D

1110

SIDE I/O

1105

4P

1107

3P

5P

1108

10P

1111

4P

F_15810_034.eps

300605

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Audio & Video

TUNER + IF

A 3

B1

+5VSW

+VTUN

2321

1302

TV

FM

SCL

B1

SDA

COMPAIR

1331

SSIF

B2

SEL_IF

B2

REAR IO SCART

A 3

B10

TER-Out

9

7

R-In

G-In

6

B-In

5

L-Out

2

R-Out

1

SIDE I/O (AV Part)

D

34

SVHS

2

1

7101

5

CVBS

L

R

SVHS
AUDIO IN

HERCULES (AUDIO)

B2

L/R_SC1_AV1_IN

AV3_LR_IN

PC_AUDIO_LR

SC1_LR_RF_OUT

6,7

4

2
1
3

7316

SCART 1

21

20

2

1

Y/CVBS

B1

CVBS-In

FBL-In

Status

L-In

R-In

C

L

R

SSIF(Tuner FM)

9

51

F306

11

10

F305

3311

10

1108 1010

4

2

6

7

9

9

10

10

7011 - SOUND

33

34,35

49,50

56,57

53,54

6323

10

9

7

6

5

2

L

1

R

4

2

6

7

QSS/FM

3323

7320

4327

4331

RF_AGC

4333

4334

+5VSW

7101

EF

AD Conv

Std Stereo

Decoder

Audio Select

ADC/DAC

1328

2

3

1330

2

3

CVBS_SC1_AV1_IN

SC1 _CVBS_RF_OUT

AV3_C_IN

AV3_CVBS_Y_IN

AV3_LR_IN

PC_AUDIO_LR

I2S Proc

36,37

7

8

7

8

F312

VIF2

VIF1

F313

F314

SIF2

SIF1

F315

B2

73

Audio

Control

Vo l/T reb /

Bass

Features

DACs

70

HERCULES (IF+VIDEO)

B2

7011
TDA120001H1

104

105

98

99

100

CVBS_SC1_AV1_IN

AV3_CVBS_Y_IN

AV3_C_IN

SC1_CVBS_RF_OUT

SC1_FBL_IN

SC1_R_V_IN

SC1_G_Y_ IN

SC1_B_U_IN

LR_SC1_AV1_IN

SC1_L

61

60

62,63

OUT_MUTE

AGC

Detect

R_RF-OUT

AUDOUTLSR

AUDOUTLSL

Sound

Tr a p s

QSS Mixer/

AM Demod.

SOUND_ENABLE

POWER_DOWN

B2

EXT_MUTE

FROM 1,2-1200

INVERTER PANEL

CVBS1

CVBS/Y- X

QSS/FM

AM

C-X

74

71

70

86

AUDIO AMPLIFIER (2X2W)

B4

(14, 15, and 17’’)

AUDOUT SL

AUDOUT SR

B2

AUDOUT SL

AUDOUT SR

7706
74LVCO8AD

1

2

12

13

AUDIO AMPLIFIER (2x5W) 20 & 23’’

I

1706

1

2

3

4

5

1703

STANDBY

MUTE

&

&

STANDBY

AUDOUT SL

AUDOUT SR

18LC4.1E AB 6.

7702
7703

MUTE

3

11

MUTE

AUD_SUP

2718

2712

MUTE

7710

7703-1

Input

sw.

CS1A..D

Output

sw.

TDA1517ATW

I706

I707

7703-2

cvbs/y

INA..D

c

+

cvbs

B6

AUD_SUP

7712

3

18

17

MODE

OUT_MUTE

7709
TDA7297D

14

7

12

13

Dig. 2H/4H

Combfilter

Y Delay Adj.

Y_NOTCH

15,16

8,9

12,13

19 L+

16

2

5

H/V

I710

I711

B2

AUDOUT SL

AUDOUT SR

Y

int

Chroma

PA L / N T S C/

SECAM
Decoder &
Baseband

Delay

R/Pr-3

INSSW3

51

50 4952 55 54 53

5013

SECAM

only

2736

2737

STANDBY

MUTE

L-

R+

R-

U

int

V

int

RGB/YPRPB Insert

YUV Interface

G/Y3

B/Pb-3

1701

1

2

3

1706

1

2

3

4

5

1704

1

2

3

4

5

CON BRI

44

RGB Matrix

Blue & Black

Stretch

Gamma Corr.

Skin Tone

U/V Tint

Saturation

YUV

Pea king

SCAVEM

U/V Delay

YUV IN/OUT

UIN

VIN

UOUT

YOU T

VOUT

59

2056

2027

YIN

58 57

2057

SIDE AV

D

(LS CONN. PART)

1110

1

2

3

1106

HEADPHONE

1107

1

2

3

4

5

H/V

SAT

SCAVEM

on Text

CVBS/Y-X

OR

OR

RGB Matrix

Blue & Black

Stretch

Gamma Corr.

R_OSD

Sync Sep

H-OSC
H-Shift
H-Drive

C-X

Vertical & East­West Geometry

G_OSD

cvbs/y

B_OSD

1105

RO

GO

43

42

BO

Fast Blanking

62

HOUT

FB/SC

66

VDRA

106

VDRB

107

4

3

2

1

R

4Ω/2W

OR

8Ω/5V

L

7013

H_CS_SDTV

V_SDTV

7014

EF

7012

B8

B8

I044

EF

R_SDTV

I041

G_SDTV

I039

EF

B_SDTV

TO

B8

SEE

BLOCKDIAGRAM

SCALER

F_15310_035.eps

300605

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Scaler & Supply

SCALER-IO

B8

C5

C1 C2

18

916

DVI -I

CONNECTOR

TOP CONTROL

E

5x

CHANNEL +
CHANNEL­VOLUME+
VOLUME­POWER

FRONT IR/LED

J

+3V3STBY

HERCULES (CONTROL)

B2

KEYBOARD

STATU S_1

B8

P50_LINE_ITV_IR_SW

B3

+1V8_A

+1V8_B

HERC_RESET

DECDIG

+3V3STBY

+5VSW

HERCULES (SUPPLY)

B3

7001,7003

+3V3STBY

DECDIG

HERC_RESET

C3 C4

24

17

IR

KEYBOARD

7802

RC

RECEIVER

3802

7801

6801

7070

1485

28

27

26

25

24

23

18

17

10

9

8

2

1

1

7804

100,117,118,124

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

B_Pb_PC

R_Pr_OC

1308

2

7803

REDGREEN

3,93,96

15,69,82

F014

F015

HS_PC

G_Y_PC

RXCn

RXCp

RX0p

RX0n

RX1p

RX1n

VS_PC

RX2p

RX2n

7011

120
115

97

119

116

123

P1.4

127

DECDIG

14

+1V8_A

+1V8_B

LED_SEL

+3V3STBY

PC_TV_LED

u-Processor

HERCULES

IC

N.C.

IR

114

111

107

108

109

104

102

99

98

122

126

128

10

11

1870

1

2

3

4

5

6

SOUND_ENABLE

PC-TV-LED

NVM_WP

EXT_MUTE

TV_SC_COM

6073

POWER_DOWN

6076

1001

2007

2006

B6

B6

B6

B6

B6

B6

B6

B6

B3

1008

1007

SDM PINS

4015

SEL_IF

SCL

SDA

56
7099

7

NV
2k x 8

TV_IRQ

STANDBY

HERCULES

(FRONT CONTROL LOOP THROUGH)

2

KEYBOARD

1

2

3

4

5

6

M

KEYBOARD

IR

LED_SEL

+3V3STBY

PC_TV_LED

B1

B3

B1

B7

B5

B3

B5

FROM

SUPPLY

PAN E L

1910

1

2

3

4

5

6

7

8

9

10

11

12

B5

B3 B4

B4 B5

+5VSW+3V3STBY

60603062

7060

B2

UART

CONN.

FOR

SERVICE

TV-SUPPLY

F903

F905

F906

F907

POWER_DOWN

BACK_LIGHT_ADJ1

LAMP_ON_OFF

D

1112

1

2

3

AUD_SUP

+3V3STBY

+3V3STBY

+12VSW

STANDBY

FROM

B2

see

blockdiagram

VIDEO

B7

B2

B7

B2

B7

SIDE AV
(UART PART)

3123

3124

3931

5930

B2 B3 B4

B2

B7

B7

R_SDTV

G_SDTV

B_SDTV

R_Pr_OC

G_Y_PC

B_Pb_PC

HD_FILTER

SD_PCHD_SEL

PC_HD_SEL

H_CS_SDTV
V_SDTV

HS_PC

VS_PC

SD_PCHD_SEL

H_CS_SDTV

PLL_SEL

+3V3STBY

7930

8

7

VCC

6

5920

13

OSC

7920

13

1

12

2

7463

10,11

19LC4.1E AB 6.

SCALER (ANA IN)

B6

7401
GM5221

7461

27

3

17

14

11

23

23 4

69 8

12

2931

5910

7910

R_MUX

G_MUX

B_MUX

7516
MK1575-01

CLOCK

RECOVERY

PLL

1401

1

2

3

4

3936

5931

5932

CS_HSYNC

VSYNC

7936

69

30

F913

F911

6910

F912

12

PLL_SEL

2

+3V3STBY

+5

VSW

+VTUN

6911

+8VSW_TV

F499

F503

B7

B8

B8

B8

B8

B8

B8

B8

B8

B2

JTAG_SDL_UART_TX

JTAG_SCL_UART_RX

B9

+3V3STBY

7

25

1

5

21

22

7510

14

1

15

5

7510

11

1111

1

2

3

4

3937

1

Q

S
R

5

2

3

4

REF

3910

2921

2

2523

3523

2524

3524

3527

2527

7403
M29W040B-55k1

7402
M24C32

SUPPLY

R_MUX

G_MUX

B_MUX

R_PR-

G_Y-

B_PB-

FLASH

ROM

512kx8

FBINFBIN

RXCn
RXCp

RX0p

RX0n

RX1p

RX1n

RX2p

RX2n

EEPROM

(NVM)

4kx8

SDA

SCL

7955

32

DATA

ADDRESS

1403
14M31818

SDA_IO

SCL_IO

3430

3431

3442

3441

1

151

147

142

152

148

143

181

182

169

170

133

132

128

129

123

124

118

119

WC

F954

2997

ANALOG

INPUT

PORT

+

TRIPLE

ADC

&

PLL

ROM

INTERFACE

VIDEO

CLK_SYN

DVI

INPUT

SYSTEM

+1V8

SCALER (LVDS, TTL OUT)

B7

LVDS

Tx

22

21

20

19

18

17

14

13

16

15

38

37

36

35

34

33

32

31

30

29

43

44

45

46

47

48

49

55

67

68

81

82

83

85

88

90

98

100

101

LV_E0_TX0-

LV_E1_TX0+

LV_E2_TX1-

LV_E3_TX1+

LV_E4_TX2-

LV_E5_TX2+

LV_E8_TX3-

LV_E9_TX3+

LV_E6_TXC-

LV_E7_TXC+

LV_O0

LV_O1

LV_O2

LV_O3

LV_O4

LV_O5

LV_O6

LV_O7

LV_O8

LV_O9

PD20

PD21

PD22

PD23

FED

FHSYNC

FVSYNC

FSHCLK

PANEL_PWR_CTL

LAMP_ON_OFF

TV_SC_COM

TV_IRQ

FBIN

PC_DET

SD_PCHD_SEL

POWER_DOWN

7437

PLL_SEL

BACK_LIGHT_ADJ1

BACK_LIGHT_ADJ2

PAN _ V CC

EG1

EG0

ER7

ER6

ER5

ER4

ER1

ER0

ER3

ER2

EB3

EB2

EB1

EB0

EG7

EG6

EG5

EG4

EG3

EG2

EB4

EB5

EB6

EB7

B9

B5

B2

B2

B6

B8

B8

B2

B8

F534

LV_E0_TX0-

LV_E1_TX0+

LV_E2_TX1-

LV_E3_TX1+

LV_E4_TX2-

LV_E5_TX2+

LV_E6_TX3-

LV_E7_TX3+

LV_ E 8_ T XC -

LV_ E 9_ T XC +

FED

FHSYNC

FVSYNC

FSSYNC

PAN _ V CC

B8

B3 B5

1404

1

2

3

4

6

8

10

12

18

20

14

16

1402

1

17

19

21

38,36

23

25

27

29

31

33

35

37

39

42

B5

B5

300605

24x

F_15310_036.eps

To LCD MONITOR (LVDS)

(MAINLY FOR 20”)

To LCD MONITOR (TTL)

Block Diagrams, Testpoint Overviews, and Waveforms

Testpoint Overview SSB (Top Side)

20LC4.1E AB 6.

X1

SERVICE TESTPOINT

F528 B6
F529 B6
F530 B5
F531 B5
F532 B5
F535 B6
F536 B5
F537 B6
F538 B6
F539 B6
I414 B5
I416 B5
I418 B5
I420 B5
I422 B5

X1

X1

500mV / div DC

5ms / div

3139 123 6019.1

F_15310_025.eps

270605