Philips LC4.2E AA Service Manual

Colour Television Chassis

LC4.2E

AA

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110604

Contents Page Contents Page

1. Technical Specifications, Connections,
and Chassis Overview 2

2. Safety and Maintenance Instructions,
Warnings, and Notes 5

3. Directions for Use 7

4. Mechanical Instructions 8

5. Service Modes, Error Codes, and Faultfinding 11

6. Block Diagrams, Testpoint Overviews,

and Waveforms

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

7. Circuit Diagrams and PWB Layouts Diagram PWB
Tuner + VIF (Diagram A1) 26 38-47
Hercules (Diagram A2) 27 38-47
Histogram (Diagram A3) 28 38-47
Audio Amplifier (Diagram A5) 29 38-47
TV-Supply (Diagram A6) 30 38-47
Scaler (Diagram A7) 31 38-47
Scaler Interface (Diagram A9) 32 38-47
SDRAM (Diagram A10) 33 38-47
Flash / Control (Diagram A11) 34 38-47
HDMI (Diagram A12) 35 38-47
PCHD-MUX (Diagram A13)36 38-47
Supply (Diagram A14) 37 38-47
Side IO and LKB Panel (Diagram D) 48 49
Rear IO Panel: Scart (17”) (Diagram H1) 50 52
Rear IO Panel: PCHD-IO (17”) (Diagram H2) 51 52
Rear IO Panel: Scart (23/26”) (Diagram H1) 53 55
Rear IO Panel: PCHD-IO (23/26”)(Diagram H2) 54 55
Front IR / LED Panel (Diagram J) 56 56

©

Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.

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

8. Alignments 63

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

10 Spare Parts List 77
11 Revision List 82

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

EN 2 LC4.2E AA1.

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1. Technical Specifications

2. Connections

3. Chassis Overview

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

1.1 Technical Specifications

1.1.1 Vision

Display type : LCD, S-IPS

: 16:9

Screen size : 17 inch (44 cm)

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

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

: WXGA

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

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

L1

Video playback : NTSC 4.43

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

Channel selections : 100 presets

: UVSH

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

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

1.1.2 Sound

Sound systems : FM/FM (5.5-5.74)

: BI NICAM BG - 2CS

BG

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

(Hung)

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

5.85)

Maximum power : 17 inch: 2 x 3 W_rms

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

- Standby : < 3 W

1.2 Connections

1.2.1 Rear Connections

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

Figure 1-1 Rear connections

Aerial - In

- IEC-type Coax, 75 ohm D

FM Ant

- IEC-type Coax, 75 ohm D

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

20

21

Figure 1-2 SCART connector

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

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3

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

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

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1.1.3 Miscellaneous

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

Ambient conditions:

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

- Maximum humidity : 90 % R.H.

Power consumption

- Normal operation : 17 inch: 55 W

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

Technical Specifications, Connections, and Chassis Overview

EN 3LC4.2E AA 1.

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

20

21

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1

Figure 1-3 SCART connector

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

4.5 - 7 V: EXT 16:9

9.5 - 12 V: EXT 4:3

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

Audio - out

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

VGA

1

5

10

6

15

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Figure 1-4 VGA Connector

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

PC Audio - in

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

1.2.2 Side connections

HEADPHONE

AUDIO IN

S-VIDEO

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Figure 1-6 Side connections

Hosiden: SVHS - In

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

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

DVI (for 23 and 26 inch models)

18
916

17

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C5

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Figure 1-5 DVI connector

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

Mini Jack: Audio - in

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

Mini Jack: Headphone - Out

- Headphone 32 - 600 ohm / 10 mW ot

EN 4 LC4.2E AA1.

Technical Specifications, Connections, and Chassis Overview

LCD PANEL

POWER SUPPLY

P

UNIT

Figure 1-7 Chassis Overview

TV & SCALER

BOARD

PIXEL PLUS PANEL

SIDE IO PANEL

FRONT LED

PANEL

REAR I/O

CINCH PANEL

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A

PP

D

J

H

040804

Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

EN 5LC4.2E AA 2.

2.1 Safety Instructions

Safety regulations require that during a repair:

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

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

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

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

• Check the insulation of the Mains lead for external
damage.

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

• Check the electrical DC resistance between the Mains plug

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

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

two pins of the Mains plug.

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

Mains cord unplugged!).

3. Measure the resistance value between the pins of the

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

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

two pins of the Mains plug.

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

2.2 Warnings

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

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

– Wristband tester 4822 344 13999.

• Be careful during measurements in the high voltage

section.

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

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

2.3 Notes

2.3.1 General

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

61.25 MHz for NTSC (channel 3).

• Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the

voltages in the power supply section both in normal
operation (G) and in standby (F). These values are
indicated by means of the appropriate symbols.

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

• Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the “double-D symbol”, are
trademarks of Dolby Laboratories.

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Figure 2-1 Dolby PL Symbol

2.3.2 Schematic Notes

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

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

• All capacitor values are given in micro-farads (µ= x10
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 Electrical
Replacement Parts List. Therefore, always check this list
when there is any doubt.

2.3.3 Rework on BGA (Ball Grid Array) ICs

General

Although (LF)BGA assembly yields are very high, there may
still be a requirement for component rework. By rework, we
mean the process of removing the component from the PWB
and replacing it with a new component. If an (LF)BGA is
removed from a PWB, the solder balls of the component are
deformed drastically so the removed (LF)BGA has to be
discarded.

Device Removal

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

Area Preparation

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

-9

), or pico-farads (p= x10

-12

-6

),

).

EN 6 LC4.2E AA2.

Device Replacement

The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be
aligned under a microscope or magnifying glass. If this is not
possible, try to align the (LF)BGA with any board markers.
To reflow the solder, apply a temperature profile according to
the IC data sheet. So as not to damage neighbouring
components, it may be necessary to reduce some
temperatures and times.

More Information

For more information on how to handle BGA devices, visit this
URL: http://www.atyourservice.ce.philips.com
subscription). After login, select “Magazine”, then go to
“Workshop Information”. Here you will find Information on how
to deal with BGA-ICs.

2.3.4 Lead Free Solder

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

Safety Instructions, Warnings, and Notes

(needs

P

b

Figure 2-2 Lead-free logo

2.3.5 Practical Service Precautions

• It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.

• Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions - reactions that are best avoided. Before reaching
into a powered TV set, it is best to test the high voltage
insulation. It is easy to do, and is a good service precaution.

3. Directions for Use

You can download this information from the following website:

http://www.philips.com/support

Directions for Use

EN 7LC4.2E AA 3.

EN 8 LC4.2E AA4.

Mechanical Instructions

4. Mechanical Instructions

Index of this chapter:

1. Service Position

2. Rear Cover Removal

3. Power Supply Unit Removal

4. TV & Scaler Board Removal

5. I/O Panel Removal

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

7. Pixel Plus Panel Removal

8. Exchanging the LCD Panel

9. Re-assembly

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

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

1. Manually unlock and remove the cover cap (1). See figure
“TV set rear view”.

2. Break away the protective plate (2) at the I/O panel bracket
to get access to the needed plugs. See figure “Protective
plate”.

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Figure 4-1 Protective plate

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Figure 4-3 TV stand removal

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

2. Unplug the AC power and the antenna cables.

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

the stand.

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

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

4.1.1 Foam Bars

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4.1 Service Position

2

Figure 4-2 TV set rear view

5

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Figure 4-4 Foam bars

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

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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 9LC4.2E AA 4.

4.2 Rear Cover Removal

3

3

1

2

3

1

Figure 4-5 Rear cover removal

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

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

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

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

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

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

2

3

3

3

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4.4 TV & Scaler Board Removal

1

Figure 4-7 : TV & Scaler board shield removal

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3

Note: avoid holding the button-area during removal (it can be

easily damaged).

4.3 Power Supply Unit Removal

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Figure 4-6 Power supply unit

1. Disconnect all cables from the Power supply unit.

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

unit.

3. Take out the Power supply unit.

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Figure 4-8 : TV & Scaler board removal

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

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

shield.

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

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

4.5 I/O Panel Removal

3

1

2

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Figure 4-9 I/O panel removal

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EN 10 LC4.2E AA4.

Mechanical Instructions

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

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

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

4. Take out the I/O panel.

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

4

2

3

1

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

Front LED panel removal

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

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

panel.

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

Keyboard panel bracket.

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

monitor.

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

Keyboard panel from the bracket.

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4.8 Exchanging the LCD Panel

1

1

Figure 4-12 Exchanging the LCD panel

1. Disconnect all cables from the LCD Panel.

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

3. Lift and take off the metal cover.

4. Now you can exchange the LCD panel.

4.9 Re-Assembly

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

Notes:

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

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

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4.7 Pixel Plus Panel Removal

1

Figure 4-11 Pixel Plus panel removal

1. Disconnect all cables from the Pixel Plus panel.

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

3. Take out the Pixel Plus panel.

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1

Figure 4-13 Ferrite ring

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Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

EN 11LC4.2E AA 5.

Index of this chapter:

1. Test Points

2. Service Modes

3. Problems and Solving Tips (related to CSM)

4. ComPair

5. Error Codes

6. The Blinking LED Procedure

7. Fault Finding and Repair Tips

8. Power Supply

5.1 Test Points

This chassis is equipped with test points in the service printing.
In the schematics test points are identified with a rectangle box
around Fxxx or Ixxx. These test points are specifically
mentioned in the service manual as “half moons” with a dot in
the centre.
Perform measurements under the following conditions:

• Television set in Service Default Alignment Mode.

• Video input: Colour bar signal.

• Audio input: 3 kHz left channel, 1 kHz right channel.

5.2 Service Modes

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

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

How to enter

To enter SDM, use one of the following methods:

• Press the following key sequence on the remote control
transmitter: “062596” directly followed by the MENU button
(do not allow the display to time out between entries while
keying the sequence).

• Short "Service" jumpers on the TV board during cold start
and apply mains (see Figure "Service jumpers"). Then
press the mains button (remove the short after start-up).
Caution: Entering SDM by shorting "Service" jumpers will
override the +8V-protection. Do this only for a short period.
When doing this, the service-technician must know exactly
what he is doing, as it could damage the television set.

• Or via ComPair.

1

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).

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Figure 5-1 E Service jumpers

EN 12 LC4.2E AA5.

Service Modes, Error Codes, and Fault Finding

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

00022 LC42EP1 0.08/S42GV1 0.90 SDM

ERR 0 0 0 0 0

OP 000 057 140 032 120 128 000

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Figure 5-2 SDM menu

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 LC42EP1 0.08/S42GV1 0.90 SAM
ERR 0 0 0 0 0

OP 000 057 140 032 120 128 000

. Clear Clear ?

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

. ComPair Mode On

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Figure 5-3 SAM menu

How to navigate

Use one of the following methods:

• When you press the MENU button on the remote control,
the set will switch on the normal user menu in the SDM
mode.

• On the TV, press and hold the VOLUME DOWN and press
the CHANNEL DOWN for a few seconds, to switch from
SDM to SAM and reverse.

How to exit

Switch the set to STANDBY by pressing the mains button on
the remote control transmitter or the television set.
If you turn the television set off by removing the mains (i.e.,
unplugging the television) without using the mains button, the
television set will remain in SDM when mains is re-applied, and
the error buffer is not cleared.

5.2.2 Service Alignment Mode (SAM)

Purpose

• To change option settings.

• To display / clear the error code buffer.

• To perform alignments.

Specifications

• Operation hours counter (maximum five digits displayed).

• Software version, Error codes, and Option settings display.

• Error buffer clearing.

• Option settings.

• AKB switching.

• Software alignments (Tuner, White Tone, Geometry &

Audio).

• NVM Editor.

• ComPair Mode switching.

How to enter

To enter SAM, use one of the following methods:

• Press the following key sequence on the remote control
transmitter: “062596" directly followed by the OSD/
STATUS button (do not allow the display to time out
between entries while keying the sequence).

• Or via ComPair.

Menu explanation

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

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

– A= the project name (LC42).
– B= the region: E= Europe, A= Asia Pacific, U= NAFTA,

L= LATAM.

– C= the software diversity:

• Europe: T= 1 page TXT, F= Full TXT, V= Voice

control.

• LATAM and NAFTA: N= Stereo non-dBx, S=
Stereo dBx.

• Asian Pacific: T= TXT, N= non-TXT, C= NTSC.

• ALL regions: M= mono, D= DVD, Q= Mk2.

– D= the language cluster number.
– X= the main software version number (updated with a

major change that is incompatible with previous
versions).

– Y= the sub software version number (updated with a

minor change that is compatible with previous
versions).

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

3. SAM. Indication of the Service Alignment Mode.

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

the buffer was erased. Five errors possible.

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

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

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

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

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

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

Service Modes, Error Codes, and Fault Finding

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

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

13. ComPaIr. Can be used to switch on the television to In

System Programming (ISP) mode, for software uploading
via ComPair.
Caution: When this mode is selected without ComPair
connected, the TV will be blocked. Remove the AC power
to reset the TV.

How to navigate

• In SAM, select menu items with the MENU UP/DOWN keys
on the remote control transmitter. The selected item will be
highlighted. When not all menu items fit on the screen, use
the MENU UP/DOWN keys to display the next / previous
menu items.

• With the MENU LEFT/RIGHT keys, it is possible to:
– Activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected submenu.

• In SAM, when you press the MENU button twice, the set

will switch to the normal user menus (with the SAM mode
still active in the background). To return to the SAM menu
press the MENU or STATUS/EXIT button.

• When you press the MENU key in while in a submenu, you
will return to the previous menu.

How to store SAM settings

To store the settings changed in SAM mode, leave the top level
SAM menu by using the POWER button on the remote control
transmitter or the television set.

How to exit

Switch the set to STANDBY by pressing the mains button on
the remote control transmitter or the television set.
If you turn the television set “off” by removing the mains (i.e.,
unplugging the television) without using the mains button, the
television set will remain in SAM when mains is re-applied, and
the error buffer is not cleared.

5.2.3 Customer Service Mode (CSM)

Purpose

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

EN 13LC4.2E AA 5.

1 00022 LC42EP1 0.08/S42GV1 0.90 CSM

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

4

5
6 NOT TUNED

7 PAL

8 STEREO

9 CO 50 CL 50 BR 50
0 AVL Off

E_14490_053.eps

230404

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.

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:

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,

EN 14 LC4.2E AA5.

Service Modes, Error Codes, and Fault Finding

Then:

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

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

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

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

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

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

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

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

decrease the PICTURE value.

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

10. The new PERSONAL preference values are automatically
stored.

White line around picture elements and text

If:

The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,

Then:

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

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

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

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

5. Use the MENU UP/DOWN keys to select SHARPNESS.

6. Press the MENU LEFT key to decrease the SHARPNESS

value.

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

8. The new PERSONAL preference value is automatically
stored.

Snowy picture

Check CSM line 6. If this line reads “Not Tuned”, check the
following:

• Antenna not connected. Connect the antenna.

• No antenna signal or bad antenna signal. Connect a proper

antenna signal.

• The tuner is faulty (in this case line 2, the Error Buffer line,
will contain error number 10). Check the tuner and replace/
repair the tuner if necessary.

Black and white picture

If:

• The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,

Then:

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

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

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

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

5. Use the MENU UP/DOWN keys to select COLOUR.

6. Press the MENU RIGHT key to increase the COLOUR

value.

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

8. The new PERSONAL preference value is automatically
stored.

Menu text not sharp enough

If:

• The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,

Then:

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

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

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

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

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

6. Press the MENU LEFT key to decrease the PICTURE

value.

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

8. The new PERSONAL preference value is automatically
stored.

5.4 ComPair

5.4.1 Introduction

ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
ComPair helps you to quickly get an understanding on how to
repair the chassis in a short time by guiding you systematically
through the repair procedures.
ComPair allows very detailed diagnostics (on I2C level) and is
therefore capable of accurately indicating problem areas. You
do not have to know anything about I2C commands yourself
because ComPair takes care of this.
ComPair speeds up the repair time since it can automatically
communicate with the chassis (when the microprocessor is
working) and all repair information is directly available. When
ComPair is installed together with the SearchMan electronic
manual of the defective chassis, schematics and PWBs are
only a mouse click away.

5.4.2 Specifications

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

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

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

Service Modes, Error Codes, and Fault Finding

EN 15LC4.2E AA 5.

communicate (read and write) to devices on the I2C
busses of the TV-set.

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

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

text or a waveform picture) that will bring you to the next
step in the faultfinding process.

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

Beside fault finding, ComPair provides some additional
features like:

• Up- or downloading of pre-sets.

• Managing of pre-set lists.

• If both ComPair and SearchMan (Electronic Service

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

PWB with a highlighted capacitor C2568.

– Click on the 'Schematic' hyperlink to automatically

show the position of the highlighted capacitor.

5.4.3 How To Connect

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

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

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

4. Switch the ComPair interface “off”.

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

6. Connect the ComPair interface cable with the connector on

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

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

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

TO SERVICE
CONNECTOR

PC VCR I2CPower

9V DC

E_06532_008.eps

190204

5.4.4 How To Order

ComPair order codes (EU/AP/LATAM):

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

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

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

• Starter kit SearchMan32 software: 3122 785 60050.

• ComPair32 CD (update): 3122 785 60070 (year 2002,

3122 785 60110 (year 2003).

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

• ComPair interface cable: 3122 785 90004.

• ComPair firmware upgrade IC: 3122 785 90510.

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

• Transformer UK: 4822 727 21633.

• Additional ComPair interface cable: 3139 131 0379.

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

5.5 Error Codes

The error code buffer contains all errors detected since the last
time the buffer was erased. The buffer is written from left to
right. When an error occurs that is not yet in the error code
buffer, it is displayed at the left side and all other errors shift one
position to the right.

5.5.1 How To Read The Error Buffer

You can read the error buffer in 3 ways:

• On screen via the SAM (if you have a picture).

Examples:

– ERROR: 0 0 0 0 0 : No errors detected
– ERROR: 6 0 0 0 0 : Error code 6 is the last and only

detected error

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

error code 9 is the last detected (newest) error

• Via the blinking LED procedure (when you have no
picture). See “The Blinking LED Procedure”.

• Via ComPair.

5.5.2 How To Clear The Error Buffer

The error code buffer is cleared in the following cases:

• By using the CLEAR command in the SAM menu:
– To enter SAM, press the following key sequence on the

remote control transmitter: “062596” directly followed
by the OSD/STATUS button (do not allow the display
to time out between entries while keying the
sequence).

– Make sure the menu item CLEAR is highlighted. Use

the MENU UP/DOWN buttons, if necessary.

– Press the MENU RIGHT button to clear the error

buffer. The text on the right side of the “CLEAR” line will
change from “CLEAR?” to “CLEARED”

• If the contents of the error buffer have not changed for 50
hours, the error buffer resets automatically.

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

5.5.3 Error Codes

Figure 5-5 ComPair Interface connection

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.

EN 16 LC4.2E AA5.

Service Modes, Error Codes, and Fault Finding

If possible, check the entire contents of the error buffer. In
some situations, an error code is only the result of another error
and not the actual cause of the problem (for example, a fault in
the protection detection circuitry can also lead to a protection).

Table 5-1 Error code overview

Error Device Error description Check item Diagram

0 Not applicable No Error

1 Not applicable - - -

2 Not applicable - - -

3 Not applicable - - -

4 GM1501 I2C error while communicating

5 Not applicab le +5v protection 7930 A6

6 I2C bus General I2C error 7011, 3088,

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 - - -

14 K4D263238M Read-write error with the

15 TDA9178T/N1 I2C error while communicating

16 EPIC12F I2C error while communicating

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

with the Scaler EEPROM

with the EEPROM

with the PLL tuner

Scaler SDRAM

with Histogram

with EPLD on Pixel Plus panel

7401
7530

3096

7531 A11

7099 A2

1302, 3302,
3303, 3327

7501 A10

7560 A3

7101 PP1

5.6 The Blinking LED Procedure

Using this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful when
there is no picture.

When the SDM is entered, the front LED will blink the contents
of the error-buffer:

• The Led blinks with as many pulses as the error code
number, followed by a time period of 1.5 seconds, in which
the Led is off.

• Then this sequence starts is repeated.

Any RC5 command terminates this sequence.

Example of error buffer: 12 9 6 0 0
After entering SDM, the following occurs:

• 1 long blink of 5 seconds to start the sequence,

• 12 short blinks followed by a pause of 1.5 seconds,

• 9 short blinks followed by a pause of 1.5 seconds,

• 6 short blinks followed by a pause of 1.5 seconds,

• 1 long blink of 1.5 seconds to finish the sequence,

• The sequence starts again at 12 short blinks.

A7A11

A2

A1

5.7.2 Load default NVM values

In case a blank NVM is placed or when the NVM content is
corrupted, default values can be downloaded into the NVM.
After the default values are downloaded it will be possible to
start up and to start aligning the TV set. This is no longer
initiated automatically; to initiate the download the following
action has to be performed:

1. Switch off the TV set via the mains switch

2. Short circuit the SDM jumpers (keep short circuited)

3. Press P+ or Ch+ on the local keyboard (and keep it

pressed)

4. Switch on the TV set via the mains switch

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

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

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

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

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

5.7.3 Tuner and IF

No Picture in RF mode

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

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

3. Check that all supply voltages are present.

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

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

output at Tuner pin 11.

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

Sound in picture problem for L' system (rolling horizontal lines)

1. Check whether AGC L' in Sam mode is set to 0.

2. If yes, align the set to correct value.

Required system is not selected correctly

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

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

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.

Service Modes, Error Codes, and Fault Finding

5.7.4 Video Processing

No power

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

2. If no supply, check the connector 1910.

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

Power supply is correct but no green light

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

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

No picture display

1. Check the RGB signal.

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

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

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

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

Note:

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

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

No TV but PC is present

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

2. If they are present, check RGB output.

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

EN 17LC4.2E AA 5.

Comb Filter not working

1. Check the option bit 5 in SAM.

2. Check NVM setting. Address 1229 is 0000.

5.7.5 Power Supply

Check fuses

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

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

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

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

Standby mode

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

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

Normal mode:

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

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

EN 18 LC4.2E AA5.

Personal Notes:

Service Modes, Error Codes, and Fault Finding

E_06532_012.eps

060804

Block Diagrams, Testpoint Overviews, and Waveforms

6. Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram

Wiring Diagram 26" LVDS Connection

19LC4.2E AA 6.

Rigth

Speaker

BACK

LIGHT

CONNECTION

LCD SCREEN

INVERTER

1520

14P

1200

12P

12P

1910

LCD-TV SCALER

A

SERVICE

COMPAIR

CONNECTION

1303

3P

1304

4P

4P

1704

LCD SCREEN
LVDS CONNECTION

1005

45P

45P

1103 1698

LVDS OUTPUT

20P

1403

1601

45P

45P

1409

9P

1002

22P

1001

20P

1104

1003

22P

PP

PIXEL

PLUS

PANEL

9P

1301

20P

Left

Speaker

SIDE I/O

D

& LKB

POWER

IN

1001

REAR I/O SCART/PCHD

H

1302

6P

6P

1540

J

FRONT
IR/LED

E_14490_101.eps

030804

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Tuner and IF Video

20LC4.2E AA 6.

A 3

A1

TV

FM

SCL

A2

SDA

A2

A2

A2

A 3H1

16

MON-Out

15

C-In

12

L-Out

11

R-Out

TER-Out

9

7

R-In

G-In

6

B-In

5

L-Out

2

R-Out

1

LR

AUDIO-OUT

D

SVHS 2

AV3

HEAD-

PHONE

TUNER +VIF

+5VSW

1302

ERR

10

2

1

3

COMPAIR

1303

SSIF

SEL_IF

REAR IO SCART

SCART 2

SCART 1

21

SIDE AV

C

Y

VIDEO

L

R

+VTUN

6,7

4

51

7316

21

Y/CVBS-In

20

P50

Status

L-In

2

R-In

1

20

CVBS-In

FBL-In

Status

L-In

R-In

2

1

TO/FROM

1200 OF

POWER SUPPY

UNIT

? ?

HERCULES

A2

3

4

6

8

VIF1

VIF2

5958

7011 - IF

24

25

31

29

30

17312

1005

110 3

7930

8

7

3931

VCC

6

F958

+12VSW

5920

AGC

Detect

P50

STATUS_2

STATUS_1

Q

S

R

OSC

REF

5

3910

A14

7920

13

2

Sound

Trap s

10051005

1

2

3

4

2931

7910

2921

2321

F306

9

11

10

F305

14,16

10,12

3311

10

15

7138

EF

16

12

L

11

R

10

7119

EF

9

7

6

5

2

L

1

R

L

R

11 04

1301

20

18

11

13

20

18

14,16

11

13

10,12

A6

1910

1

3

4

8

9

10

11

12

RF_AGC

6323

3323

7320

SC2_CVBS_MON_OUT

P50_LINE_ITV_IR_SW

SCV1_CVBS_RF_OUT

SC1_COMP_AV1_G_Y_CVBS_IN

SC1_COMP_AV1_LR_IN

SVHS_AV2_Y_CVBS_IN

TV SUPPLY

F903

F906

POWER_DOWN

STANDBY

BU_LIGHT_ADJ1

LAMP_ON-OFF

1328

4327

2

4331

3

1330

4333

2

4334

3

+5VSW

SC1_CVBS_IN

SC2_Y_IN

SC2_C_IN

STATUS_2

SC2_LR_MON_OUT

SC2_LR_IN

SC1_FBL_IN

SC1_COMP_R_V_IN

SC1_COMP_B_U_IN

STATUS_1

SC1_LR_RF-OUT

Const_LR_OUT

HP_DET_R_DC

HP_DET_IN

SVHS_C_IN

SVHS_LR_IN

HP_LROUT

AUD-SUP

+3V3STBY

F905

+12VUNREG

7

8

7

8

A2,A7

A2

A7

A7

SIF1

SIF2

32

16

14

22

44

15

24,27

18,20

41

42

35

30

34

29

37,39

43,45

25,28

31

10,12

1,2

SYSTEM 7011

PAL-MULTI/SECAM TDA12021

A 4

NTSC TDA12001

CHINA/NTSC-AP TDA12011

QSS Mixer/

AM Demod.

A2

SC1_CVBS_IN

14

SVHS_AV2_Y_CVBS_IN

38

SC2_Y_IN

30

SVHS_C_IN

40

SC2_C_IN

32

SC2_CVBS_RF_OUT

5

SC2_CVBS_MON_OUT

24

SC1_FBL_IN

4

SC1_COMP_R_V_IN

11

SC1_COMP_AV1_G_Y_CVBS_IN

16

SC1_COMP_B_U_IN

12

HISTORGRAM

A3

SC2_LR_MON_OUT

19,22

SC2_LR_IN

26,28

SC1_COMP_AV1_LR_IN

7,9

SC1_LR_RF-OUT

1,3

Const_LR_OUT

18,21

15

+5VSW+5VSW

HP_DET_R_DC

43

HP_DET_IN

42

SVHS_LR_IN

34,36

HP_LROUT

44,45

6930

5931

F915

+5VSW

F912

+VTUN

6910

6911

+8VSW_TV

F913

CVBS1

QSS/FM

AM

55

58

51

59

52

43

64

CVBS/Y-X

C-X

Y_NOTCH

A7

A 7

A5

A5

A2

A5

A1

SSIF(Tuner FM) 33

SC1_COMP_AV1_LR_IN

SVHS_LR_IN

SC2_LR_IN

AudioIN2LR

A12

SC2_LR_MON_OUT

SC1_LR_RF_OUT

Const_LR_OUT

+12VSW

HERCULES

Input

sw.

CS1A..D

Output

sw.

34,35

49,50

56,57

53,54

cvbs/y

INA..D

c

+

cvbs

7562

5560

13

7011 - SOUND

QSS/FM

Std Stereo

Audio Select

ADC/DAC

Dig. 2H/4H

Combfilter

Y Delay Adj.

H/V

2

AD Conv

Decoder

Y

int

Chroma

PA L/N TS C/

SECAM
Decoder &
Baseband

Delay

INSSW3

78 79 8077 74 75 76

+8VSW_2

2561

I2S Proc

36,37

G/Y3

R/Pr-3

U

int

V

int

RGB/YPRPB Insert

YUV Interface

B/Pb-3

YOUT

68

20

7560

Audio

Control

Vol /Treb /

Bass

Features

DACs

7370

RGB Matrix

Blue & Black

Gamma Corr.

VIN

UOUT

VOUT

70

9

Pix Improvement

(Histogram)

SCL

A2 A2

Stretch

Skin Tone

U/V Tint

Saturation

YUV

Peaking

SCAVEM

U/V Delay

YUV IN/OUT

UIN

71 72

161719

ERR

15

1411

SANDCASTLE

SDA

A3

61

60

62,63

7371

H/V

YIN

1

HISTOGRAM

7377-A

7376-A

7376-B
7377-B

SAT

SCAVEM

on Text

CVBS/Y-X

1:1

1:1

CON BRI

RGB Matrix

Blue & Black

Stretch

Gamma Corr.

R_OSD

G_OSD

cvbs/y

Sync Sep

H-OSC
H-Shift
H-Drive

C-X

Vertical & East­West Geometry

7372

B_OSD

Fast Blanking

A5

AUDOUTLSL

AUDOUTLSR

AUDOUTLSR

A3

HP_DET_IN

A3

HP_DET_R_DC

AUDOUTLSL

A2

SOUND_ENABLE

POWER_DOWN

A6

A2

STANDBY

EXT_MUTE

A2

OUT_MUTE

85

RO

GO

86

87

BO

67

HOUT

FB/SC

66

VDRA

23

VDRB

22

AUDIO AMPLIFIER

ST_BY

HISTOGRAM

A3

7018

3021

7019

3058

3010

67

2

AUD-SUP

37467703-1

3706

F702

3706

F701

+3V3STBY

7706

14

1
2

4
5

9

10

12

13

2020

7016#

6

THR

7

DISC

CTRL

2062

+3V3STBY

7740

3

6

8

11

VCC

ST_BY

7013

8

RES

OUT

5

2028

2022

TR

3025

1

7

12

14

EF

2

4

3

7017#

6

7

2034

AUD-SUP

7709

ST-BY

3732

THR

DISC

MUTE

7014

7012

7015#

3057

6

THR

7

DISC

2042

# = NE555 TIMER

8

VCC

2

TR

4

RES

3

OUT

CTRL

5

2045

HP_LOUT

HP_ROUT

7708

6,15

VCC

2

+

5

-

19

+

16

-

13

AUD-SUP

3747

7703-2

7710

E_14490_018.eps

EF

EF

+5VSW

8

VCC

CTRL

+5VSW

040804

TR

RES

OUT

5

2021

SANDCASTLE

A3

F705

4

F706

3

2

F707

1

F708

R_SDTV

G_SDTV

B_SDTV

2

4

H_CS_SDTV

3

V_SDTV

I341

1704

A13

A13

A13

A13

A13

RIGHT

LEFT

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Scaler

21LC4.2E AA 6.

HERCULES

A 2

A13

KEYBOARD

A13

LIGHT-SENSOR-SDM

A13

IR

A3

STAT U S_2

A3

STAT U S_1

P50_LINE_ITV_IR_SW

A3

P50

+3V3STBY

+3V3STBY

+5VSW

H2

PC-IN

DVI-IN

PC-AUDIO-IN

J

7001,7003

PCHD-IO

15

DDC_5V

FRONT

CONTROL

+1V8_A

+1V8_B

1511

1

2

6

7

9

10

3,11,19,22

14

15

16

17

18

23

24

6540

7543

6541

7075

100,117,118,124

7070

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

7693

8

3682

2

1

3

6

4

6

DDC
NVM

1540

3,93,96

15,69,82

DDC_5V

3691

5

120

115

97

119

116

123

127

14

+3V3STBY

1302

2

1

3

6

4

D

7011

u-Processor

HERCULES

IC

ERR

6

DECDIG

7694

8

6691

3710

6

6

SIDE AV

DVI

NVM

6

RES

RES

114

111

107

108

109

104

102

99

98

122

126

128

10

11

5

5692

89

SDM PINS

4022

SEL_IF

SOUND_ENABLE

PC-TV-LED

SCL

SDA

56

NVM_WP

7099

7

NVM

ERR

EXT_MUTE

TV_SC_COM

TV_IRQ

STANDBY

POWER_DOWN

1001

2007

2006

PC_HD_DET+

BLU_PB

GRN_Y

RED_PR

UART_TX

UART_RX

RX2-IN

RX2+IN

SCL_DVI

SDA_DVI

RX1-IN

RX1+IN

+3V3STBY

6692

+5VSWI

HOT_PLUG

RX0-IN

RX0+IN

RXC+IN

RXC-IN

PC_AUDIO_L

PC_AUDIO_R

PC-TV-LED

LED-SEL

LIGHT-SENSOR-SDM

KEYBOARD

23489

11 04

1301

4

3

2

1309~13

9

P50

HS

VS

3709

IR

LKB 5x

A13

A1

A5

A5

A7

A7

A5

A3

A6

37

38

18

19

35

33

31

22

23

6

7

26

25

9

10

29

28

20

12

13

15

16

4

2

40

41

43

42

45

A13

H_CS_SDTV

A2

V_SDTV

A2

HS

VS

A7

SD_HD_SEL

PC_HD_DET-

PC_HD_DET+

A2

R_SDTV

A2

G_SDTV

A2

B_SDTV

RED_PR

GRN_Y

BLU_PB

HD_FILTER

A7

A7

SD_HD_SEL

PC_HD_SEL

A7

1698

PCHD-MUX

7605

13

1

12

2

9,11

F624

F625

F626

9

8

PC_HD_DET+

28

PC_HD_DET-

27

11

BLU_PB

13

RED_PR

15

UART_TX

24

UART_RX

23

40

39

20

21

37

36

1601

17

+3V3STBY

18

+5VSWI

26

34

33

31

30

42

4836

44

4838

8

PC-TV-LED

5

LIGHT-SENSOR-SDM

3

4

1

KEYBOARD

SUPPLY

A14

+12VSW

5952

3951//52

2953

14

15

7604-5

11 1 0

7607

27

3

7

25

1

5

21

22

13 12

HS

VS

GRN_Y

AudioIN2L

AudioIN2R

LED-SEL

A2

7952

8

7

VCC

6

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

7604

1

5

23 4

69 8

6604

H_CS

V

PC_HD_DET

6605

17

F613

F615

F617

R_PR+

G_Y+

B_PB+

14

11

9

7604-6

7606

1

2

15

14

11

12

9, 17, 19

A7

PC_HD_SEL

A7

A12

3640

6640

+3V3STBY

+5VSWI

7640

IR

+3V3STBY

6995

1

Q

S

2

R

OSC

3

4

REF

5

2956

3954

2957

A7

SOG

A 7

+1V8

7995

32

5953

F954

1

6951

PANEL-PWR-CTL

+5VSWI

I996

2960

R_PR-

G_Y-

B_PB-

A7

5996

5997

5998

+1V8_ADC

+1V8_DVI

+1V8_CORE

+3V3STBY

7955

A7

A6

A2

A2

SCALER

A10

7501

SDRAM

HOT_PLUG

PC_HD_DETA13

POWER_DOWN

TV_SC_COM

Y_NOTCH

3955

3958

SDRAM

ERR

14

+3V3_PLL

7992

13

I992

2994

2

7953

5959

13

7954

ADDRESS

DATA

2488

2487

5994

2

1401

F960

2960

A11

A12

#RESET

ANALOG

CONTROL

DVI/HDMI

GPIO_G09_B1

OCM_INT1

GPI_G09_B3

GPIO_16

+2V5_DDR

PAN _V CC

FLASH/CONTROL

+3V3STBY

7532

5

VCC

RESET

GND

2,3

INPUT
PORT

FRAME
STORE

INPUT
PORT

4

+3V3_IO

RESET

3547-2

3547-3

3546-2

3546-3

OCMADDR1

OCMADDR2

7401

GM1501

SXGA DISPLAY
CONTROLLER

GRAPHIC

ZOOM

OUT BLENDER

OSD CONTROLLER

VIDEO
ZOOM

INTERFACE

MICRO-

CONTROLLER

INTERNAL

RAM

SCREEN SIZE

(1)

PRESENT ONLY FOR 23"

(2)

PRESENT ONLY FOR 26"

(1)

3551

(2)

3552

MSTR_SCL

MSTR_SDA

GPIO_G09_B4

BRIGHTNESS/CONTRAST/HUE/SAT

UART

GPIO_G09_B4

GPIO_G07_B0

GPIO_G07_B5

GPIO_G09_B0

OCM_TIMER1

EXT.

ROM

INTER-

FACE

DISPLAY

TIMING

GEN

GPIO_G07_B6

GPIO_G07_B2

OCM_OD0

OCM_OD1

VGA_SCL

VGA_S DA

PPWR

PWM1

PBIAS

NVM-WP

ADDRESS

PAN_VCC

TXB2+

3444*

DATA

TXB0-

TXB3+

TXB0+

TXB3-

TXB1-

TXB1+

TXBC+

TXBC-

TXB2-

1002

A 9

4445**

PP2

20p

PP1

7102
EPCS4518

7108
OC

GENERATOR

7531

NVM

7

1403

1,2

3,4,5

6

7
8

9

10,11

12

14
15

13,16

17

18

19

20

LVDS IN

10

LVDS_SIGNAL_IN

EPLD
CONTROL

EPLD

FLASH

ROM

CLOCK

SCALER INTERFACE

SDA_IO

SCL_IO

PIXEL+_RESET

PIXEL+_SYNC

+3V3STBY

+5V+SWI

PC_HDMI-AUDIO_SEL

PANEL-PWR-CTL

** FOR 17" ONLY

* FOR 23" & 26"

3452*

7449*

5

6

SCL_IO

SDA_IO

FOR SETS

WITHOUT

PIXEL+

FOR SETS

WITH

PIXEL+

EPLD I/O

7201
THC63LVDF84B

INTERFACE

RECEIVER

SD_HD_SEL

PC_HD_SEL

HD_FILTER

LAMP_ON-OFF

BU_LIGHT_ADJ1

PP3

7101
EP1C12F256C8

LVD S

1409 1001

3

5

7

UART_TX

UART_RX

TV_IRQ

EPLD

(PIXEL+

PROC)

7403
THC63LVDM83R

RESET_IN

SYNC_OUT

POWER
SUPPLY

PP4

SDA

1

4

9+5

SCL

SDA

1

SCL

3

RESET_IN

4

SYNC_OUT

5

+3V3_IN

7

9

A13

A13

A2

A2

A2

A12

A13

A13

A14

A13

A6

A6

ADDRESS

DATA

LVD S
TRANS­MITTER

SDA

SCL

FLASH

ROM

TO LVDS

CONNECTOR

LCD PANEL

7505

1304

1

3

2

PIXEL+

PAN E L

PAN _ V CC

TXB0-

TXB3+

TXB0+

TXB3-

TXB1-

TXB1+

TXBC+

TXBC-

TXB2-

TXB2+

7504

SI2307D5

UART

A 3A 1

3,4,5

10,11

13,16

7501

LF15ABDT

FOR SERVICE

E_14490_102.eps

1403

1,2

6

7
8

9

12

14
15

17

18

19

20

F521

F503

TO LCD PANEL (LVDS)

+3V3

+1V1

+5V

040804

Block Diagrams, Testpoint Overviews, and Waveforms

Testpoint Overview TV & Scaler Board (Bottom Side)

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

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

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

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

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

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

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

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

SERVICE TESTPOINT

3139 123 5804.2

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

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

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

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

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

22LC4.2E AA 6.

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

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

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

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

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

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

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

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

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

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

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

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

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

E_14490_021.eps

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

030604

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

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

F302

1V / div DC

20us / div

1V / div DC

20us / div

F306

200mV / div AC

20us / div

F305 No wafeform available

F613

200mV / div DC

20us / div

F615F303

200mV / div DC

20us / div

F617

200mV / div DC

20us / div

F624 F625

500mV / div DC

20us / div

500mV / div DC

20us / div

F626 F701 F702

500mV / div DC

20us / div

20mV / div AC

1ms / div

20mV / div AC

1ms / div

F705 F706

50mV / div AC

1ms / div

50mV / div AC

1ms / div

F707 F708

50mV / div AC

1ms / div

50mV / div AC

1ms / div

I341

1V / div DC

5ms / div

I344

1V / div DC

20us / div

I904

2V / div DC

5us / div

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

F913 8V
F958 11V6
F960 11V4
F954 5V4
F992 2V5
F996 1V8

Block Diagrams, Testpoint Overviews, and Waveforms

Testpoint Overview TV & Scaler Board (Top Side)

SERVICE TESTPOINT

23LC4.2E AA 6.

F452

500mV / div DC

20us / div

 

3139 123 5804.2

E_14490_022.eps

030604

E_06532_012.eps

130204

Block Diagrams, Testpoint Overviews, and Waveforms

I2C IC Overview

I2C BUS INTERCONNECTION DIAGRAM

HERCULES

A2

7011

SET

PROCESSOR

PART OF

VIDEO­PROCESSER
(HERCULES)

+3V3STBY +3V3STBY

3096 3088

109

108

SDA

SCL

ERR

24LC4.2E AA 6.

TUNER IF

A1

6

F303

F302

33023303

A3

HISTOGRAM

A7

SCALER

FLASH/CONTROL

A11

+3V3STBY +3V3STBY

3433 3432

ERR

6

VGA CONNECTOR

5

15

1

11

104

H2

1687

12

15

PCHD-IO

9

NVM_WP

SDA_VGA

SCL_VGA

3702

6693 5686

3697 3696

+3.3V

3097

7

56

56

7099

M24C16

EEPROM

(NVM)

ERR

9

DDC_5V

3707

3706

RESERVED

54

1302

TUNER

ERR

10

UART_RX

UART_TX

For

COMPAIR

only

1698

23

22

1303

1

2

3

A13

1601

23

24

PCHD_MUX

UART_RX

UART_TX

14 11

7560

TDA9178T

HISTOGRAM

ERR

15

N1 N2

7401
GM1501
SCALER

ERR

14

SDA_IO

SCL_IO

NVM_WPP

ADDRESS

DATA

56

7531

M24C32

EEPROM

ERR

8

7530

M29W040B

FLASH

ROM

512kx8

ERR

4

SCALER

INTERFACE

A9 PP4 PP3

1409

1001

1

3

1

3

PIXEL +

SDAO

SCLO

T2 R2

7101

EP1C12F

ERR

16

DVI-D CONNECTOR

17

9

1

16

24

8

C5

1680

14

7

6

SDA_DVI

SCL_DVI

3691

6691 5692

3705 3704

7693

M24C02

EEPROM

256x8

56

7694

M24C02

EEPROM

256x8

DVI_5V

DDC_5V

SDA_DVI

SCL_DVI

SDRAM

A10

7501

ADDRESS

DATA

25

26

21

20

SDA_DVI

SCL_DVI

K4D263238M

SDRAM
IMx32x4

ERR

14

E_14490_106.eps

040804

Block Diagrams, Testpoint Overviews, and Waveforms

Supply Voltage Overview

TO LCD DISPLAY

TV SUPPLY

A6

1910

1

2

3

4

5

6

7

8

9

10

11

12

+12VSW

+12VSW

SUPPLY

A14

+3V3STBY

+12VUNREG

PANEL_PWR_CTL

A7

5909

POWER_DOWN

STANDBY

BU_LIGHT_ADJ1

LAMP_ON_OFF

5930

5920

7992

7995

+12VUNREG

5952

5956

7930
MC34063AD

SUPPLY

7920
L78M08CDT

7952

SUPPLY

SUPPLY
PA NE L

1200

1001

1520

AUD_SUP

+3V3STBY

+12VUNREG

A5

A2

A7

A7

5931

26

IC

6930

3910

31

+3V3STBY

+3V3_PLL

5984

+3V3_ADC

5985

+3V3_DVI

5986

+3V3_IO

5987

+3V3_LBADC

5988

+3V3_LVDSA

5989

+3V3_LVDSB

5990

+3V3_LVDS

5991

+2V5_DDR +2V5_DDR

5994

+1V8

+1V8_ADC

5996

+1V8_DVI

5997

+1V8_CORE

5998

+12VSW

5958

5953 5954

26

IC

7954

S

G

CONTROL

6951

5959

D

7955

5932

5910

6910

7910

+5VSWI +5VSWI

7993

PAN_VCC

6911

-/C33

F903

F905

F906

F915

F912

F913

AUD_SUP

+3V3STBY

+12VUNREG

+5VSW

+VTUN

+8VSW_TV+8VSW_TV

+12VSW

+12VUNREG

+3V3STBY

+3V3_PLL

+3V3_ADC

+3V3_DVI

+3V3_IO

+3V3_LBADC

+3V3_LVDSA

+3V3_LVDSB

+3V3_LVDS

+1V8_ADC

+1V8_DVI

+1V8_CORE

+12VSW

A13
A12
A11

A14

A14

A14

A9, A10

A10

A13

25LC4.2E AA 6.

TUNER IF

A1

+3V3STBY

+5VSW

A6

A5

A9
A7
A5
A3
A2
A1

+VTUN

A6

+3V3STBY

A6

A2

+3V3STBY

A6

7011

HERCULES

A3
A2
A1

A1

A3
A2

A6

A6

A7
A9

A7
A9

A7
A9

A7

A7
A9

A7
A9

A7
A9

A7
A9

A7
A9

A7
A9

A7
A9

A7
A9

A3
A6

A9

A7

A6

A6

A6

A6

A6

A14

A6

A6

A6

A14

A14

A14

A14

A14

A14

A14

A14

A14

A14

A10

A14

A14

A14

+8VSW_TV

+5VSW

A3

+5VSW

+3V3STBY

+8VSW_TV

7562

+12VSW

A5

AUDIO_SUP

+3V3STBY

A7

+3V3STBY

+3V3_DVI

+3V3_PLL

+5VSWI

+3V3_LBADC

+1V8_CORE

+3V3_IO

+3V3_LVDSB

+2V5_DDR

+3V3_LVDSA

+3V3_LVDS

FSVREF

+1V8_DVI

+1V8_ADC

+3V3_ADC

+5VSW

+VTUN

+3V3STBY
(FOR ITV ONLY)

HERCULES

14

127

HISTOGRAM

+5VSW

+3V3STBY

+8VSW_TV

31

+8VSW_2

AUDIO AMPLIFIER

AUDIO_SUP

1701

+T

TO 15, 16 - 7707 (ITV ONLY)

+3V3STBY

SCALER

+3V3STBY

+3V3_DVI

+3V3_PLL

+5VSWI

+3V3_LBADC

+1V8_CORE

+3V3_IO

+3V3_LVDSB

+2V5_DDR

+3V3_LVDSA

+3V3_LVDS

FSVREF

+1V8_DVI

+1V8_ADC

+3V3_ADC

PAN_VCC

7001

CONTROL

7003

CONTROL

3374

LVD S

CONN.

1403

+3V3STBY

+1V8_A

+1V8_B

+8VSW_TV

TO 45 - 7011

+5VSW

1005

+5VSW

1

1008

+3V3STBY

26

27

1004

+3V3STBY

+8VSW_TV

1

10

LCD
DISPLAY
17”

1

OR

2

OR

A6

+5VSWI

A14

+3V3_PLL

A14

+3V3_ADC

A14

+3V3_DVI

A14

+3V3_IO

A14

+3V3_LBADC

A14

+3V3_LVDSA

A14

+3V3_LVDSB

A14

+3V3_LVDS

A14

+1V8_ADC

A14

+2V5_DDR

A14

+1V8_CORE

A14

+1V8_DVI

A14

+2V5_DDR

A14

FSVREF

A7

NC

+3V3STBY

A6

+3V3_IO

A14

+3V3STBY

A6

+3V3STBY

A6

+5VSWI

A14

H1

1103

31

H2

1698

28

29

1687

VGA

CONN.

DVI -D

CONN.

9

1680

14

SCALER INTERFACE

A9

SDRAM

A10

3501

3502

FLASH/CONTROL

A11

HDMI

A12

1801

3

NC

PCHD-MUX

A13

REAR I/O SCART

+5VSWI

3169

PCHD-IO

+3V3STBY

+5VSWI

3702 6693

3691 6691

+3V3STBY

+5VSWI

+3V3_PLL

+3V3_ADC

+3V3_DVI

+3V3_IO

+3V3_LBADC

+3V3_LVDSA

+3V3_LVDSB

+3V3_LVDS

+1V8_ADC

+2V5_DDR

+1V8_CORE

+1V8_DVI

FSVREF

+2V5_DDR

FSVREF

+3V3STBY

+3V3_IO

(MAINLY FOR NAFTA)

+3V3STBY

+5VHDMI

+3V3STBY

+5VSWI

+5VSWI

+5VSW_1

6692

5686

5692

+3V3STBY

DCC_5V

DCC_5V

+3V3STBY

+5VSWI

+5VSWI

1409

1601

17

18

1104

5

6

7

9

PIXEL+ PANEL

PP4

1001

7

9

PP1

EPLD
CONT.

PP3

EPLD
I/O

PP2

LV DS
IN

VLCD VLCD

1
2

1801

3D COMB FILTER

CB

1801

3V3STBY

1

8V3

10

SIDE IO & LKB

D

1301

5

6

FRONT IR/LED

J

1540

2

7505

7504

5851

3876

3878

7501

13

3V3

3855

5855

5856

7851
LF25CDT

68756876

+5VSWI

+3V3STBY

+3V3STBY

++3V3STBY

5107

5104

5105

1003

1
2

OUTIN

5870

1302

2

+3V3

+1V5

+5

+3V3_IO

+1V5_PLL

+1V5_INT

+3V3_IO

+5

3V3

LCD
DISPLAY
23” & 26”

3V3STBY

8V3

8V3d

3V3_400mA

2V5A

2V5D

2V5P

E_14490_075.eps

160704