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)5559
Pixel Plus Panel: LVDS In (Diagram PP2) 5659
Pixel Plus Panel: EPLD I/O (Diagram PP3) 5759
Pixel Plus Panel: Power Supply (Diagram PP4) 5859
8. Alignments61
9. Circuit Descriptions 64
Abbreviation List70
IC Data Sheets72
10 Spare Parts List76
11 Revision List81
Published by BB 0468 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 14510
EN 2LC4.2A 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.
•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.
2.2Warnings
•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.
2.3Notes
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.
E_06532_006.eps
240604
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
),
).
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!
(needs
Directions for Use
Figure 2-2 Lead-free logo
2.3.5Practical 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.
EN 5LC4.2A AA3.
P
b
3.Directions for Use
You can download this information from the following website:
http://www.philips.com/support
EN 6LC4.2A 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. Exchanging the LCD Panel
8. 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”.
2
E_14490_001.eps
Figure 4-1 Protective plate
4.1Service Position
130404
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
4
E_14490_003.eps
130404
2
3
Figure 4-2 TV set rear view
5
1
E_14490_002.eps
130404
E_06532_018.eps
170504
Figure 4-4 Foam bars
The foam bars (order code 3122 785 90580) can be used for
all types and sizes of Flat TVs. By laying the plasma or LCD TV
flat on the (ESD protective) foam bars, a stable situation is
created to perform measurements and alignments. By placing
a mirror under the TV, you can easily monitor the screen.
Mechanical Instructions
EN 7LC4.2A AA4.
4.2Rear 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
33
E_14490_004.eps
130404
4.4TV & Scaler Board Removal
1
Figure 4-7 : TV & Scaler board shield removal
2
E_14490_006.eps
130404
3
Note: avoid holding the button-area during removal (it can be
easily damaged).
4.3Power Supply Unit Removal
1
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.
E_14490_005.eps
130404
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.
4.5I/O Panel Removal
3
1
E_14490_007.eps
2
130404
Figure 4-9 I/O panel removal
E_14490_008.eps
130404
EN 8LC4.2A 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.
4.6Pixel Plus Panel Removal
1
E_14520_005.eps
100204
4.8Exchanging 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.
1
E_14490_010.eps
130404
Figure 4-10 Pixel Plus Panel removal
1. Disconnect all cables from the Pixel Plus panel.
2. Remove all mounting screws from the Pixel Plus panel.
3. Take out the Pixel Plus panel.
4.7Side I/O & Keyboard Panel and Front LED
Panel Removal
4
2
3
1
E_14490_009.eps
4.9Re-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).
1
130404
Figure 4-11 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.
Figure 4-13 Ferrite ring
E_14490_055.eps
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Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 9LC4.2A AA5.
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
5.1Test 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.
5.2Service 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").
•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: 61.25 MHz (Channel 3).
•Colour system: NTSC.
•All picture settings at 50% (brightness, colour contrast,
hue).
•Bass, treble and balance at 50 %; volume at 25 %.
•All service-unfriendly modes (if present) are disabled. The
service unfriendly modes are:
– Timer / Sleep timer.
– Child / parental lock.
– Blue mute.
– Hotel / hospital mode.
– Auto shut off (when no “IDENT” video signal is
received for 15 minutes).
– Skipping of non-favourite presets / channels.
– Auto-storage of personal presets.
– Auto user menu time-out.
– Auto Volume Levelling (AVL).
E_14490_056.eps
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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 Alignment Mode.
00022 LC42AP1 1.0x/S42GV1 1.0x SDM
ERR 0 0 0 0 0
OP 000 057 140 032 120 128 000
How to enter
To enter SDM, use one of the following methods:
Figure 5-2 SDM menu
E_14490_117.eps
040804
EN 10LC4.2A AA5.
Service Modes, Error Codes, and Fault Finding
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 ‘POWER’ button
on the remote control transmitter or press the 'POWER' switch
on the set.
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 LC42AP1 1.0x/S42GV1 1.0x 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
2. AAABCD-X.Y/EEEEEE F.GG This is the software
identification of the main microprocessor:
– 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.
11. NVM Editor. Can be used to change the NVM data in the
television set.
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.
E_14490_118.eps
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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.
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 power button on
the remote control transmitter or press the 'POWER' switch on
the set.
Service Modes, Error Codes, and Fault Finding
EN 11LC4.2A AA5.
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:
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.
E_14490_119.eps
040804
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.
EN 12LC4.2A AA5.
Service Modes, Error Codes, and Fault Finding
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.
5.4ComPair
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
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.
Service Modes, Error Codes, and Fault Finding
buffer, it is displayed at the left side and all other errors shift one
position to the right.
Note: If you encounter any problems, contact your local
support desk.
5.5Error 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
9V DC
E_06532_008.eps
190204
5.5.1How 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.
5.5.2How 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.
5.5.3Error Codes
In case of non-intermittent faults, write down the errors present
in the error buffer and clear the error buffer before you begin
the repair. This ensures that old error codes are no longer
present.
If possible, check the entire contents of the error buffer. In
some situations, an error code is only the result of another error
and not the actual cause of the problem (for example, a fault in
the protection detection circuitry can also lead to a protection).
Table 5-1 Error code overview
Error DeviceError descriptionCheck itemDiagram
0Not applicable No Error
1Not applicable ---
2Not applicable ---
3Not applicable ---
4GM1501I2C error while communicating with the Genesis Scaler and/or Flash-ROM is
74017530A7A11
faulty/empty
5Not applicable +5v protection7930A6
6I2C busGeneral I2C error7011, 3088, 3096A2
7Not applicable ---
8M24C32I2C error while communicating with the Scaler EEPROM7531A11
9M24C16I2C error while communicating with the EEPROM7099A2
10TunerI2C error while communicating with the PLL tuner1302, 3302, 3303A1
11UPD64083I2C error while communicating with the 3DYC Combfilter7823, 3881, 3882,
CBA3
3064, 3071
12Not applicable ---
13SII9993CTI2C error while communicating with the HDMI Decoder7808, 3824, 3825A12
14K4D263238M Read-write error with the Scaler SDRAM7501A10
15TDA9178T/N1 I2C error while communicating with Histogram7560, 7562A3
16EPIC12FI2C error while communicating with EPLD on Pixel Plus panel7101PP1
EN 14LC4.2A AA5.
Service Modes, Error Codes, and Fault Finding
5.6The Blinking LED Procedure
Using this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful when
there is no picture.
When the SDM is entered, the front LED will blink the contents
of the error-buffer:
•The Led blinks with as many pulses as the error code
number, followed by a time period of 1.5 seconds, in which
the Led is off.
•Then this sequence starts is repeated.
Any RC5 command terminates this sequence.
Example of error buffer: 12 9 6 0 0
After entering SDM, the following occurs:
•1 long blink of 5 seconds to start the sequence,
•12 short blinks followed by a pause of 1.5 seconds,
•9 short blinks followed by a pause of 1.5 seconds,
•6 short blinks followed by a pause of 1.5 seconds,
•1 long blink of 1.5 seconds to finish the sequence,
•The sequence starts again at 12 short blinks.
5.7Fault 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, parts of the NVM contents need to be changed.
This can be done with the “NVM Editor” option in SAM mode.
With this option single bytes can be changed.
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.
5.7.4 Video Processing
No power
1. Check +12 V and 3V3 at position 1910.
2. If no supply, check the connector 1910.
3. If it is correct, check the power supply board.
Power supply is correct but no green light
1. Check the two connectors 1005 and 1601, if they are
properly inserted.
2. If they are inserted correctly, check if the 3V3 is present.
No picture display
1. Check the RGB signal.
2. If it is present, check 3-IC7016 (NE555).
3. If it has output, the problem is in SCALER part.
4. Otherwise, check H-out on pin 2 of NE555. If the input
signal of pin2 is present, but no output, the IC is failed.
Note:
•If the H-out (pin 67) doesn’t have signal or the level is low,
check the output of NE555 (pin 3) during start up.
•If the H-out (pin 67) has a signal (or has a signal for a very
short time), change IC7016 (NE555).
No TV but PC is present
1. Check if HSYNC and VSYNC are present at PIN 3 of 7071
and 7015.
2. If they are present, check RGB output.
3. If there is no RGB output, the IC TDA120xx can be failed.
Comb Filter not working
1. Check the option bit 5 in SAM.
2. Check NVM setting. Address 1229 is 0000.
5.7.5 Power Supply
Check fuses
This power supply contains three fuses. One is near the mains
inlet (marked on the board as 1102) and two other are near the
output connectors (marked 1610 and 1660).
1. Check with power supply in off state by means of ohmic
measurement.
2. Fuse 1102 may open in case of severe lightning strikes
and/or failures in the power supply. Despite the fact, that
this fuse is mounted in a fuse holder and the marking text
on the board, it is not meant to be field replaceable.
3. Fuses 1610 and 1660 may open in case a severe overload
of the 12 V outputs. Replacement of the power supply is
needed, but not before the cause of the overload
conditions is resolved.
Standby mode
1. Apply a 12 ohm load resistor of sufficient power rating to all
outputs (+3 V3, +12 VAL, +12 VL and +24 V). Connect the
STBY pin to GND.
2. Over an input voltage range of 90 V_ac to 264 V_ac only
the +3 V3 output shall be up and within regulation (±5%).
Service Modes, Error Codes, and Fault Finding
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 15LC4.2A AA5.
EN 16LC4.2A 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
EN 17LC4.2A AA6.
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
1004
10P
1005
45P
45P
11031698
LVDS OUTPUT
20P
1403
1601
45P
45P
1801
20P
20P
1690
1409
9P
1002
1003
22P
1001
22P
PP
PIXEL
PLUS
PANEL
9P
1104
1301
20P
Left
Speaker
SIDE I/O
D
& LKB
POWER
IN
1001
REAR I/O CINCH
H
20P
1302
6P
6P
1540
J
FRONT
IR/LED
E_14490_105.eps
030804
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Tuner and IF Video
EN 18LC4.2A AA6.
A 3
A 1
TV
FM
A2
A2
A2
A 3H1
SVHS
AV2
AV1
D
SVHS
AV3L
HEAD-
PHONE
TUNER +VIF
SCL
SDA
COMPAIR
SSIF
(1)
VIDEO
Y
U
V
C
VIDEO
R
1302
1303
CINCH IO
Y
VIDEO
L
R
L
R
SIDE AV
Y
+5VSW
1
2
3
C
+VTUN
6,7,3
9
4
51
7316
TO/FRO M
XXXX OF
POWER SUPPY
UNIT
X X
11
10
7226//7227
20
18
14,16
11
13
10,12
F306
3311
(1) 23" & 26" ONLY
7225
20
1301
2321
F305
17" SIGNAL PATH
(1)
EF
(1)
SC1_COMP_AV1_G_Y_CVBS_IN
SC1_COMP_AV1_LR_IN
1104
18
14,16
11
13
10,12
A 6
1910
1
3
4
8
9
POWER_DOWN
STANDBY
10
11
BU_LIGHT_ADJ1
LAMP_ON-OFF
12
1328
2
4327
4331
RF_AGC
SC1_CVBS_IN
SC2_Y_IN
SVHS_C_IN
(1)
7228
EF
SCV1_CVBS_RF_OUT
SC2_LR_IN
STATUS_1
SC1_COMP_R_V_IN35
SC1_COMP_B_U_IN
HP_DET_R_DC
HP_DET_IN
SVHS_AV2_Y_CVBS_IN
SVHS_LR_IN
HP_LROUT
TV SUPPLY
7
3
8
11031103
32
16
6
41
18,20
29
30
34
37,39
3115
3
4
8
10,12
1,2
F903
AUD-SUP
+3V3STBY
F905
F906F958
+12VUNREG
A2,A7
A2
A7
A7
A 2
VIF1
24
VIF2
25
31
29
30
B1CB
3D COMBFILTER
(23" & 26" ONLY)
5958
HERCULES
7011 - IF
(23" & 26" ONLY)
7930
8
7
3931
VCC
5920
AGC
Detect
9
8
10
3
1801
Q
S
R
OSC
REF
5
6
3910
A14
+12VSW
7920
13
2
SYSTEM7011
PAL-MULTI/SECAMTDA12021
A 4
A 4
NTSCTDA12001
CHINA/NTSC-APTDA12011
Sound Mixer/
AM Demod.
HISTORGRAM
A 3
SC1_CVBS_IN
14
38 SVHS_AV2_Y_CVBS_IN
SC2_Y_IN
30
SVHS_C_IN40
1004
N.C.
N.C.
N.C.
N.C.
1
2
3
4
YOUT_COMB
9
COUT_COMB
8
10
+8VSW_TV
CVBS_COMB
3
SC2_CVBS_RF_OUT
5
SC1_FBL_IN
4
SC1_COMP_R_V_IN
11
SC1_COMP_AV1_G_Y_CVBS_IN
16
SC1_COMP_B_U_IN
12
1005
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
+5VSW+5VSW
HP_DET_R_DC
43
HP_DET_IN
42
STATUS_1
17
1005
SVHS_LR_IN
34,36
HP_LROUT
44,45
2931
5931
F915
F912
6910
7910
2921
+8VSW_TV
F913
6930
6911
+5VSW
+VTUN
Sound
Traps
QSS/FM
AM
CVBS1
CVBS/Y-X
C-X
55
58
51
59
52
64
48
Y_NOTCH
A7
A 7
A5
A5
A2
A 2
A5
A1
SSIF(Tuner FM)33
SC1_COMP_AV1_LR_IN
SVHS_LR_IN
SC2_LR_IN
A12
AudioIN2LR
EUROPE ONLY
SC2_LR_MON_OUT
SC1_LR_RF_OUT
Const_LR_OUT
+12VSW
HERCULES
Input
sw.
CS1A..D
Output
sw.
cvbs/y
INA..D
+
5560
7011 - Sound
QSS/FM
34,35
49,50
56,57
53,54
Dig. 2H/4H
Combfilter
Y Delay Adj.
c
H/V
cvbs
7562
13
AD Conv
Std Stereo
Decoder
Audio Select
ADC/DAC
INSSW3
2
Y
int
Chroma
PAL/NTSC/
SECAM
Decoder &
Baseband
78 79 807774 75 76
+8VSW_2
2561
I2S Proc
36,37
Delay
R/Pr-3
U
int
V
int
RGB/YPRPB Insert
YUV Interface
G/Y3
B/Pb-3
YOU T
6 8 9 161719
20
7560
Audio
Control
Vol/Treb/
Bass
Features
DACs
7370
UOUT
VOUT
Pix Improvement
(Histogram)
SCL
CONBRI
RGB Matrix
Blue & Black
Stretch
Gamma Corr.
Skin Tone
U/V Tint
Saturation
YUV
Peaking
SCAVEM
U/V Delay
YUV IN/OUT
VIN
UIN
YIN
70 71 72
1
1411
SDA
SANDCASTLE
A2A2
61
60AUDOUTLSL
62,63
7371
RGB Matrix
Blue & Black
Stretch
Gamma Corr.
R_OSD
G_OSD
SAT
SCAVEM
on Text
cvbs/y
Sync Sep
H-OSC
1:1
1:1
C-X
7372
H-Shift
H-Drive
Vertical & EastWest Geometry
H/V66
CVBS/Y-X
7377-A
7376-A
7376-B
7377-B
B_OSD
A 5
A3
A3
A2
A6
A2
A2
RO
GO
BO
Fast Blanking
FB/SC
VDRA
VDRB
AUDIO AMPLIFIER
AUDOUTLSL
AUDOUTLSR
ST_BY
AUDOUTLSR
HP_DET_IN
HP_DET_R_DC
SOUND_ENABLE
POWER_DOWN
STANDBY
EXT_MUTE
OUT_MUTE
HISTOGRAM
A 3
7014
EF
EF
+5VSW
VCC
CTRL
+5VSW
8
TR
RES
OUT
5
2021
A3
F706
F708
160704
R_SDTV
G_SDTV
B_SDTV
2
4
H_CS_SDTV
3
SANDCASTLE
I341
1704
4
3
2
1
85
86
87
7018
3021
67HOUT
7019
3058
23
22
3010
AUD-S UP
37467703-1
3706
F702
F701
3706
+3V3STBY
7706
1
2
4
5
9
10
12
13
7013
EF
2020
7016#
8
VCC
CTRL
5
ST_BY
RES
OUT
2028
2022
1
12
14
TR
3025
7
7709
ST-BY
2
4
3
7017#
6
THR
7
DISC
2034
AUD-S UP
3732
CTRL
VCC
MUTE
AUD-SUP
6
THR
7
DISC
2062
+3V3STBY
7740
67
2
14
3
6
8
11
7012
7015#
3057
6
THR
7
2042
# = NE555 TIMER
8
VCC
TR
RES
OUT
5
2045
HP_LOUT
HP_ROUT
7708
F705
6,15
+
-
19
+
16
-
13
3747
7703-2
7710
DISC
2
4
3
2
5
F707
E_14490_072.eps
V_SDTV
RIGHT
LEFT
A13
A13
A13
A13
A13
Block Diagrams, Testpoint Overviews, and Waveforms