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.
Published by BB 0471 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 15030
EN 2LC4.1L AA1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
1.1Technical Specifications
1.1.1 Vision
Display type: DV-LCD-IPS
Screen size:: 17 inch (45 cm)
1 - Y Ground H
2 - C Ground H
3 - Y 1 Vpp/75 ohm j
4 - C 0.3 Vpp/75 ohm j
Video - In (Cinch)
1 - CVBS 1 Vpp/75 ohm jq
Audio - In (Cinch)
1 - Audio - R 0.5 Vrms/10 kohm jq
2 - Audio - L 0.5 Vrms/10 kohm jq
Jack: Headphone- Out
Bk - Headphone 32 - 600 ohm / 10 mW rt
Technical Specifications, Connections, and Chassis Overview
1.3Chassis Overview
EN 3LC4.1L AA1.
FRONT IR / LED
J
PA NEL
POWER SUPPLY
UNIT
Figure 1-4 Chassis Overview
TOP CONTROL PANEL
LCD PANEL
TV & SCALER
BOARD
AMPLIFIER
PA NEL
SIDE IO PANEL
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A
I
D
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EN 4LC4.1L AA2.
Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
2.1Safety Instructions
Safety regulations require that during a repair:
•Connect the set to the Mains (AC Power) via an isolation
transformer (> 800 VA).
•Replace safety components, indicated by the symbol h,
only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.
Safety regulations require that after a repair, the set must be
returned in its original condition. Pay in particular attention to
the following points:
•Route the wire trees correctly and fix them with the
mounted cable clamps.
•Check the insulation of the Mains (AC Power) lead for
external damage.
•Check the strain relief of the Mains (AC Power) cord for
proper function.
•Check the electrical DC resistance between the Mains (AC
Power) plug and the secondary side (only for sets which
have a Mains (AC Power) isolated power supply):
1. Unplug the Mains (AC Power) cord and connect a wire
between the two pins of the Mains (AC Power) plug.
2. Set the Mains (AC Power) switch to the "on" position
(keep the Mains (AC Power) cord unplugged!).
3. Measure the resistance value between the pins of the
Mains (AC Power) plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 Mohm and 12 Mohm.
4. Switch "off" the set, and remove the wire between the
two pins of the Mains (AC Power) plug.
•Check the cabinet for defects, to 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 stand-by (F). These values are
indicated by means of the appropriate symbols.
•The semiconductors indicated in the circuit diagram and in
the parts lists, are interchangeable per position with the
semiconductors in the unit, irrespective of the type
indication on these semiconductors.
•Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the “double-D symbol”, are
trademarks of Dolby Laboratories.
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 SpareParts
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.
Device Replacement
The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be
-9
), or pico-farads (p= x10
-12
-6
),
).
Safety Instructions, Warnings, and Notes
EN 5LC4.1L AA2.
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: www.atyourservice.ce.philips.com
not available for all regions). After login, select “Magazine”,
then go to “Workshop Information”. Here you will find
Information on how to deal with BGA-ICs.
2.3.4 Lead Free Solder
Philips CE is going to produce lead-free sets (PBF) from
1.1.2005 onwards.
Lead-free sets will be indicated by the PHILIPS-lead-free logo
on the Printed Wiring Boards (PWB):
(needs subscription,
P
b
Figure 2-1 Lead-free logo
•Use only original spare-parts listed in the Service-Manuals.
Not listed standard material (commodities) has to be
purchased at external companies.
•Special information for lead-free BGA ICs: these ICs will be
delivered in so-called "dry-packaging" to protect the IC
against moisture. This packaging may only be opened
short before it is used (soldered). Otherwise the body of the
IC gets "wet" inside and during the heating time the
structure of the IC will be destroyed due to high (steam)pressure inside the body. If the packaging was opened
before usage, the IC has to be heated up for some hours
(around 90°C) for drying (think of ESD-protection !).
Do not re-use BGAs at all!
•For sets produced before 1.1.2005, containing leaded
soldering tin and components, all needed spare parts will
be available till the end of the service period. For the repair
of such sets nothing changes.
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 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.
This sign normally has a diameter of 6 mm, but if there is less
space on a board also 3 mm is possible.
In case of doubt wether the board is lead-free or not (or with
mixed technologies), you can use the following method:
•Always use the highest temperature to solder, when using
SAC305 (see also instructions below).
•De-solder thoroughly (clean solder joints to avoid mix of
two alloys).
Caution: For BGA-ICs, you must use the correct temperatureprofile, which is coupled to the 12NC. For an overview of these
profiles, visit the website www.atyourservice.ce.philips.com
(needs subscription, but is not available for all regions)
You will find this and more technical information within the
"Magazine", chapter "Workshop information".
For additional questions please contact your local repairhelpdesk.
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
•Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.
•Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able
– To reach at least a solder-tip temperature of 400°C.
– To stabilise the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
•Adjust your solder tool so that a temperature around 360°C
- 380°C is reached and stabilised at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will rise drastically and flux-fluid will be destroyed. To
avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
•Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to
avoid mixed regimes. If not to avoid, clean carefully the
solder-joint from old tin and re-solder with new tin.
EN 6LC4.1L AA3.
3.Directions for Use
You can download this information from the following websites:
Note: Figures below can deviate from the actual situation, due
to different set executions.
Note: To diagnose the set with ComPair it is not needed to
open the set entirely.
To access the ComPair connector, proceed with the following:
1. Manually unlock and remove the cover cap.
2. Remove the tape shielding that covers the ComPair
connector (1).
1
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Figure 4-1 ComPair connector
4.2Rear Cover Removal
1
Figure 4-3 Rear cover removal
1. Make sure all power-, audio-, video- and coax- cables are
unplugged.
2. Remove all Torx screws (1) around the edges of the rear
cover.
3. Remove the rear cover and store it in a safe place.
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Note: Make sure that both the ComPair connector and the
UART connector are shielded off with a piece of insulating tape
after repair for ESD reasons. Place this tape over the holes in
the rear cover of the set.
4.1Service Position
4.1.1 Foam Bars
Figure 4-2 Foam bars
The foam bars (order code 3122 785 90580) can be used for
all types and sizes of Flat TVs. By laying the plasma or LCD TV
flat on the (ESD protective) foam bars, a stable situation is
created to perform measurements and alignments. By placing
a mirror under the TV, you can easily monitor the screen.
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4.3Power Supply Unit Removal
1
Figure 4-4 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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EN 8LC4.1L AA4.
Mechanical Instructions
4.4TV & Scaler Board Removal
1
2
Figure 4-5 TV & Scaler board removal
1. Disconnect all cables from the TV & Scaler board.
2. Remove the screw from the grounding cable (1).
3. Remove the mounting screw (2) and remove the board.
4.5Side I/O Panel Removal
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4.7Audio Amplifier Panel Removal
1
2
Figure 4-7 Audio amplifier panel removal
1. Disconnect all cables from the audio amplifier panel.
2. Remove all mounting screws from the audio amplifier panel
(1).
3. Unlock the panel by twisting back the clamp at the bottom
(2).
4. Take out the audio amplifier panel.
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1
2
Figure 4-6 Side I/O panel removal
1. Disconnect all cables from the Side I/O panel.
2. Remove the mounting screw (1).
3. Unlock the panel by twisting back the clamp at the bottom
(2).
4. Take out the Side I/O panel from the bracket.
4.6Top Control Panel Removal
1. Disconnect the cable from the top control panel.
2. Remove the two mounting screws from the top control
panel.
3. Take out the top control panel.
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4.8Exchanging the LCD Panel
1
Figure 4-8 Exchanging the LCD panel
1. Disconnect all cables from the LCD Panel.
2. Remove all mounting screws (1) from the metal cover.
3. Lift and take off the metal cover.
4. Now you can exchange the LCD panel.
4.9Re-Assembly
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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(1) at the board topside. See
figure “TV & Scaler board removal”.
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 9LC4.1L AA5.
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Problems and Solving Tips Related to CSM
5.4 ComPair
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Fault Finding and Repair Tips
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").
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.
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 +5V-protection. Do this only for a short period.
When doing this, the service-technician must know exactly
what he is doing, as it could damage the television set.
•Or via ComPair.
1
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Figure 5-1 Service jumpers
After entering SDM, the following screen is visible, with SDM in
the upper right corner of the screen to indicate that the
television is in Service Default Alignment Mode.
•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 5-2 SDM menu
How to navigate
Use one of the following methods:
•When you press the MENU button on the remote control,
the set will switch on the normal user menu in the SDM
mode.
•On the TV, press and hold the VOLUME DOWN and press
the CHANNEL DOWN for a few seconds, to switch from
SDM to SAM and reverse.
EN 10LC4.1L AA5.
s
4
Service Modes, Error Codes, and Fault Finding
How to exit
Switch the set to STANDBY by pressing the mains button on
the remote control transmitter or the television set.
If you turn the television set off by removing the mains (i.e.,
unplugging the television) without using the mains button, the
television set will remain in SDM when mains is re-applied, and
the error buffer is not cleared.
5.2.2 Service Alignment Mode (SAM)
Purpose
•To change option settings.
•To display / clear the error code buffer.
•To perform alignments.
Specifications
•Operation hours counter (maximum five digits displayed).
•Software version, Error codes, and Option settings display.
•Error buffer clearing.
•Option settings.
•AKB switching.
•Software alignments (Tuner, White Tone, Geometry &
Audio).
•NVM Editor.
•ComPair Mode switching.
How to enter
To enter SAM, use one of the following methods:
•Press the following key sequence on the remote control
transmitter: “062596" directly followed by the OSD/
STATUS button (do not allow the display to time out
between entries while keying the sequence).
•Or via ComPair.
After entering SAM, the following screen is visible, with SAM in
the upper right corner of the screen to indicate that the
television is in Service Alignment Mode.
•LATAM and NAFTA: N= Stereo non-dBx, S=
Stereo dBx.
•Asian Pacific: T= TXT, N= non-TXT, C= NTSC.
•ALL regions: M= mono, D= DVD, Q= Mk2.
– D= the language cluster number.
– X= the main software version number (updated with a
major change that is incompatible with previous
versions).
– Y= the sub software version number (updated with a
minor change that is compatible with previous
versions).
– EEEEEE= the scaler sw cluster
–
F= the main sw version no.
– GG= the sub-version no.
3. SAM. Indication of the Service Alignment Mode.
4. Error Buffer. Shows all errors detected since the last time
the buffer was erased. Five errors possible.
5. Option Bytes. Used to set the option bytes. See “Options”
in the Alignments section for a detailed description. Seven
codes are possible.
6. Clear. Erases the contents of the error buffer. Select the
CLEAR menu item and press the MENU RIGHT key. The
content of the error buffer is cleared.
7. Options. Used to set the option bits. See “Options” in the
Alignments section for a detailed description.
8. Tuner. Used to align the tuner. See “Tuner” in the
Alignments section for a detailed description.
9. White Tone. Used to align the white tone. See “White
Tone” in the Alignments section for a detailed description.
10. Audio. No audio alignment is necessary for this television
set.
11. NVM Editor. Can be used to change the NVM data in the
television set. See table “NVM data” further on.
12. SC NVM Editor. Can be used to edit Scaler NVM.
13. ComPaIr. Can be used to switch on the television to In
System Programming (ISP) mode, for software uploading
via ComPair.
Caution: When this mode is selected without ComPair
connected, the TV will be blocked. Remove the AC power
to reset the TV.
OP 000 057 140 032 120 128 000
. Clear Clear ?
. Options
. Tuner
. White Tone
. Audio
. NVM Editor
. SC NVM Editor
. ComPair Mode On
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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.
2. AAABCD-X.Y. This is the software identification of the
main microprocessor:
– A= the project name (LC41).
– B= the region: E= Europe, A= Asia Pacific, U= NAFTA,
L= LATAM.
– C= the software diversity:
How to navigate
•In SAM, select menu items with the MENU UP/DOWN keys
on the remote control transmitter. The selected item will be
highlighted. When not all menu items fit on the screen, use
the MENU UP/DOWN keys to display the next / previous
menu items.
•With the MENU LEFT/RIGHT keys, it is possible to:
– Activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected submenu.
•In SAM, when you press the MENU button twice, the set
will switch to the normal user menus (with the SAM mode
still active in the background). To return to the SAM menu
press the MENU or STATUS/EXIT button.
•When you press the MENU key in while in a submenu, you
will return to the previous menu.
How to store SAM settings
To store the settings changed in SAM mode, leave the top level
SAM menu by using the POWER button on the remote control
transmitter or the television set.
How to exit
Switch the set to STANDBY by pressing the mains button on
the remote control transmitter or the television set.
If you turn the television set “off” by removing the mains (i.e.,
unplugging the television) without using the mains button, the
television set will remain in SAM when mains is re-applied, and
the error buffer is not cleared.
Service Modes, Error Codes, and Fault Finding
EN 11LC4.1L 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:
3 OP 000 057 140 032 120 128 000
4 20PF8846/12
5
6 NOT TUNED
7 PAL
8 STEREO
9 CO 50 CL 50 BR 50
0 AVL Off
5.3Problems and Solving Tips Related to CSM
5.3.1Picture Problems
Note: The problems described below are all related to the TV
settings. The procedures used to change the value (or status)
of the different settings are described.
Picture too dark or too bright
If:
•The picture improves when you press the AUTO PICTURE
button on the remote control transmitter, or
•The picture improves when you enter the Customer
Service Mode,
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu.
4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.
5. Use the MENU UP/DOWN keys (if necessary) to select
BRIGHTNESS.
6. Press the MENU LEFT/RIGHT keys to increase or
decrease the BRIGHTNESS value.
7. Use the MENU UP/DOWN keys to select PICTURE.
8. Press the MENU LEFT/RIGHT keys to increase or
decrease the PICTURE value.
9. Press the MENU button on the remote control transmitter
twice to exit the user menu.
10. The new PERSONAL preference values are automatically
stored.
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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 12LC4.1L 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
5.4.2 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.
For 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 I
2
the I
C bus of the television. ComPair can send and
receive I
2
C commands to the micro controller of the
2
C level. ComPair can access
television. In this way, it is possible for ComPair to
communicate (read and write) to devices on the I
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 extends.
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 oscillogram you see on the
oscilloscope). You can answer by clicking on a link (e.g.
text or a waveform picture) that will bring you to the next
step in the 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.
•Emulation of the Dealer Service Tool (DST).
•If both ComPair and SearchMan (Electronic Service
Manual) are installed, all the schematics and the PWBs of
the set are available by clicking on the appropriate
hyperlink.
Example: Measure the DC-voltage on capacitor C2568
(Schematic/Panel) at the Mono-carrier.
– Click on the “Panel” hyperlink to automatically show
the PWB with a highlighted capacitor C2568.
– Click on the “Schematic” hyperlink to automatically
show the position of the highlighted capacitor.
2
C busses
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 I
is therefore capable of accurately indicating problem areas.
You do not have to know anything about I
yourself because ComPair takes care of this.
•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.
2
C level) and
2
C commands
5.4.3 How To Connect
This is described in the chassis fault finding database in
ComPair.
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
buffer, it is displayed at the left side and all other errors shift one
position to the right.
5.5.1 How To Read The Error Buffer
You can read the error buffer in 3 ways:
•On screen via the SAM (if you have a picture).
Examples:
– ERROR: 0 0 0 0 0 : No errors detected
– ERROR: 6 0 0 0 0 : Error code 6 is the last and only
detected error
– ERROR: 9 6 0 0 0 : Error code 6 was detected first and
error code 9 is the last detected (newest) error
•Via the blinking LED procedure (when you have no
picture). See “The Blinking LED Procedure”.
•Via ComPair.
5.5.2 How To Clear The Error Buffer
The error code buffer is cleared in the following cases:
•By using the CLEAR command in the SAM menu:
– To enter SAM, press the following key sequence on the
remote control transmitter: “062596” directly followed
by the OSD/STATUS button (do not allow the display
to time out between entries while keying the
sequence).
– Make sure the menu item CLEAR is highlighted. Use
the MENU UP/DOWN buttons, if necessary.
– Press the MENU RIGHT button to clear the error
buffer. The text on the right side of the “CLEAR” line will
change from “CLEAR?” to “CLEARED”
•If the contents of the error buffer have not changed for 50
hours, the error buffer resets automatically.
Note: If you exit SAM by disconnecting the mains from the
television set, the error buffer is not reset.
5.5.3 Error Codes
In case of non-intermittent faults, write down the errors present
in the error buffer and clear the error buffer before you begin
the repair. This ensures that old error codes are no longer
present.
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 item Diagram
0Not applicable No Error
1Not applicable ---
2Not applicable ---
3Not applicable ---
4GM5221I2C error while communicating
5Not applicable +5v protection7930A6
6I2C busGeneral I2C error7011, 3083,
7Not applicable ---
8M24C32I2C error while communicating
9M24C16I2C error while communicating
10TunerI2C error while communicating
11Not applicable ---
12Not applicable ---
13Not applicable ---
with the Genesis Scaler
and/or Flash-ROM is faulty/
empty
with the Scaler EEPROM
with the EEPROM
with the PLL tuner
7401
7403
3084
7402A7
7099A2
1302, 3302,
3303, 3327
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 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.
5.7.1NVM Editor
In some cases, it can be handy if one directly can change the
NVM contents. This can be done with the “NVM Editor” in SAM
mode.
5.7.2Tuner and IF
No Picture in RF mode
1. Check whether picture is present in AV. If not, go to Video
processing troubleshooting section.
A6 / A7
A2
A1
EN 14LC4.1L AA5.
Service Modes, Error Codes, and Fault Finding
2. If present, check that the Option settings are correct.
3. Check that all supply voltages are present.
4. Check if I2C lines are working correctly (3.3V).
5. Manually store a known channel and check if there is IF
output at Tuner pin 11.
6. Feed in 105 dBuV at Tuner pin 11 and check whether there
is RGB output from Video Processing IC. If yes, Tuner may
be defected. Change Tuner.
Sound in picture problem for L' system (rolling horizontal
lines)
1. Check whether AGC L' in Sam mode is set to 0.
2. If yes, align the set to correct value.
Required system is not selected correctly
1. Check whether the Service jumper (#4022, 08 05 size) is
present. If yes, remove it.
2. Check whether SEL_IF pin is according to what is
specified.
5.7.3 Video Processing
No power
1. Check +12 V and 3V3 at position 1910.
2. If no supply, check the connector 1910.
3. If it is correct, check the power supply board.
Power supply is correct but no green light
1. Check the two connectors 1007 and 1008, if they are
properly inserted.
2. If they are inserted correctly, check if the 3V3 is present.
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%
No picture display
1. Check the RGB signal.
2. If it is present, check pin 3 of IC7006 (NE555).
3. If it has output, the problem is in SCALER part.
4. Otherwise, check H-out on pin 2 of NE555. If the input
signal of pin2 is present, but no output, the IC is failed.
Note:
•If the H-out (pin 67) doesn’t have signal or the level is low,
check the output of NE555 (pin 3) during start up.
•If the H-out (pin 67) has a signal (or has a signal for a very
short time), change IC7006 (NE555).
No TV but PC is present
1. Check if HSYNC and VSYNC are present at PIN 3 of 7007
and 7005.
2. If they are present, check RGB output.
3. If there is no RGB output, the IC TDA120xx can be failed.
Comb Filter not working
1. Check the option bit 5 in SAM.
5.7.4 Power Supply
Check fuses
This power supply contains three fuses. One is near the mains
inlet (marked on the board as 1102) and two other are near the
output connectors (marked 1610 and 1660).
1. Check with power supply in off state by means of ohmic
measurement.
2. Fuse 1102 may open in case of severe lightning strikes
and/or failures in the power supply. Despite the fact, that
this fuse is mounted in a fuse holder and the marking text
on the board, it is not meant to be field replaceable.
3. Fuses 1610 and 1660 may open in case a severe overload
of the 12 V outputs. Replacement of the power supply is
needed, but not before the cause of the overload
conditions is resolved.
Block Diagrams, Testpoint Overviews, and Waveforms
6.Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
TOP CONTROL
E
EN 15LC4.1L AA6.
1308
2P
LCD SCREEN
(LVDS) CONNECTION
TTL
Rigth
Speaker
BACK
LIGHT
CONNECTION
LCD SCREEN
INVERTER
1200
12P
SCALER
A
TUNER
19101206
12P
1007
1701
3P
70117401
5P
2P6P
1008
1402
1401
4P
1951
Left
Speaker
AUDIO AMPLIFIER
I
(5W)
5P
40P
1010
10P
1704
5P
1706
5P
1703
2P
FOR 2x5W
6P
1870
J
FRONT
IR/LED
BACK
LIGHT
CONNECTION
LCD SCREEN
POWER
IN
1001
FOR 2x2W
D
1110
SIDE I/O
1105
4P
1107
5P
3P
1108
10P
1111
4P
E_14520_001.eps
170904
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Audio & Video
EN 16LC4.1L AA6.
TUNER + VIF
A 3
A1
1302
TV
FM
SCL
A1
SDA
COMPAIR
1331
SSIF
A2
SEL_IF
A2
REAR IO CINCH
A 3
A10
Y
Pb
Pr
CVBS
L
R
SIDE I/O (AV Part)
D
34
SVHS
1
2
7101
5
CVBS
L
R
SVHS
AUDIO IN
HERCULES (AUDIO)
A2
L/R_SC1_AV1_IN
AV3_LR_IN
PC_AUDIO_LR
SC1_LR_RF_OUT
+5VSW
6,7
2
1
3
Y/CVBS
A1
+VTUN
4
51
7316
C
L
R
SSIF(Tuner FM)
9
11
10
11081010
4
2
6
7
9
10
F306
34,35
49,50
56,57
53,54
2321
F305
3311
6323
4
2
6
7
9
10
7011 - SOUND
QSS/FM
33
3323
7320
Audio Select
4327
4331
RF_AGC
4333
4334
+5VSW
AD Conv
Std Stereo
Decoder
ADC/DAC
1328
2
3
F312
7
8
F313
7
8
F314
SIF2
SIF1
1330
2
3
F315
CVBS_SC1_AV1_IN
SC1_R_V_IN
SC1_G_Y_ IN
SC1_B_U_IN
L_SC1_AV1_IN
R_SC1_AV1_IN
AV3_C_IN
AV3_CVBS_Y_IN
I2S Proc
36,37
VIF2
VIF1
73
Audio
Control
Vo l/T reb /
Bass
Features
DACs
70
HERCULES (IF+VIDEO)
A2
7011 - IF
25
24
31
30
29
CVBS_SC1_AV1_IN
AV3_CVBS_Y_IN
AV3_C_IN
SC1_R_V_IN
SC1_G_Y_ IN
SC1_B_U_IN
L_SC1_AV1_IN
R_SC1_AV1_IN
AV3 _LR _IN
PC_AUDIO_LR
61
60
62,63
OUT_MUTE
AGC
Detect
AUDO UTLS R
AUDO UTLS L
Sound
Tr a p s
HERCULES 7011
TDA15001H
TDA15011H
TDA15021H
QSS Mixer/
AM Demod.
NAFTA
AP-NTSC / LATAM
EU / AP-PAL
A4
SOUND_ENABLE
POWER_DOWN
A2
EXT_MUTE
FROM 1,2-1200
INVERTER PANEL
CVBS1
CVBS/Y-X
QSS/FM
AM
C-X
55
58
51
59
52
43
64
AUDIO AMPLIFIER (2X2W)
(14, 15, and 17’’)
AUDOUT SL
AUDOUT SR
A2
AUDOUT SL
AUDOUT SR
12
13
I
1
2
3
4
5
STANDBY
MUTE
7706
74LVCO8AD
1
&
2
&
AUDIO AMPLIFIER (2x5W) 20 & 23’’
1706
1703
2718
2712
7702
7703
MUTE
MUTE
3
11
STANDBY
AUDOUT SL
AUDOUT SR
7703-1
MUTE
AUD_SUP
7710
Input
sw.
CS1A..D
Output
sw.
TDA1517ATW
I706
I707
7703-2
cvbs/y
INA..D
c
+
cvbs
A6
AUD_SUP
7712
3
18
17
MODE
OUT_MUTE
7709
TDA7297D
14
7
12
13
Dig. 2H/4H
Combfilter
Y Delay Adj.
Y_NOTCH
15,16
8,9
12,13
19L+
16
2
5
H/V
I710
I711
A2
AUDOUT SL
AUDOUT SR
Y
int
Chroma
PA L / N T S C/
SECAM
Decoder &
Baseband
Delay
R/Pr-3
INSSW3
78
79 807774 75 76
5013
SECAM
only
2736
2737
STANDBY
MUTE
L-
R+
R-
U
int
V
int
RGB/YPRPB Insert
YUV Interface
G/Y3
B/Pb-3
1701
1
2
3
1706
1
2
3
4
5
1704
1
2
3
4
5
7014
EF
7012
2014
7005#
3005
6
THR
7
DISC
2015
RGB Matrix
Blue & Black
Stretch
Gamma Corr.
Skin Tone
U/V Tint
Saturation
YUV
Pea king
SCAVEM
U/V Delay
YUV IN/OUT
H/V
CONBRI
RGB Matrix
Blue & Black
Gamma Corr.
R_OSD
SAT
SCAVEM
on Text
Stretch
G_OSD
cvbs/y
Sync Sep
H-OSC
H-Shift
H-Drive
85
RO
GO
86
87
BO
B_OSD
Fast Blanking
F007
67
HOUT
FB/SC
66
7013
A3
SANDCASTLE
HISTOGRAM
7015
F006
7016
VSYNC
3031
1105
VDRA
23
VDRB
22
3010
4
3
2
1
R
4Ω/2W
OR
8Ω/5V
L
C-X
CVBS/Y-X
Vertical & EastWest Geometry
UIN
VIN
UOUT
YOU T
VOUT
2056
2027
YIN
70
71 72
2057
SIDE AV
D
(LS CONN. PART)
1110
1
2
3
1106
HEADPHONE
1107
1
2
3
4
5
OR
OR
VCC
CTRL
8
5
EF
EF
TR
RES
OUT
2028
2040
3036
2042
I044
I041
I039
2
4
3
7007#
6
7
R_SDTV
G_SDTV
B_SDTV
+5VSW
7006#
3025
6
THR
7
DISC
2029
# = NE555 TIMER
8
VCC
THR
TR
RES
DISC
OUT
CTRL
5
2045
VCC
CTRL
2
4
3
8
TR
RES
OUT
5
2034
+5VSW
TO
A8
SEE
BLOCKDIAGRAM
SCALER
2
4
H_CS_SDTV
3
A8
V_SDTV
A8
E_14520_058.eps
270904
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Scaler & Supply
EN 17LC4.1L AA6.
A8
1
2
15
3
1511
9
12
13
14
15
TOP CONTROL
E
5x
CHANNEL +
CHANNELVOLUME+
VOLUMEPOWER
FRONT IR/LED
J
+3V3STBY
HERCULES (CONTROL)
A2
KEYBOARD
IR
STATUS _1
A8
P50_LINE_ITV_IR_SW
A3
+1V8_A
+1V8_B
HERC_RESET
DECDIG
+3V3STBY
+5VSW
HERCULES (SUPPLY)
A3
7001,7003
+3V3STBY
DECDIG
HERC_RESET
PCHD-IO
RED_PR
GREEN_Y
BLUE_PB
VGA_5V
SDA
HS
VS
SCL
KEYBOARD
7802
RC
RECEIVER
3802
7801
6801
7070
1308
2
1
7803
REDGREEN
7804
120
115
119
116
123
3,93,96
100,117,118,124
127
4,5,7,9,88,90,94
15,69,82
F014
F015
7011
97
P1.4
DECDIG
14
+1V8_A
+1V8_B
DCC_VGA_5V
LED_SEL
+3V3STBY
PC_TV_LED
u-Processor
HERCULES
IC
N.C.
IR
114
111
107
108
109
104
102
99
98
122
126
128
10
11
+5VSW
6460
7462
1870
1
2
3
4
5
6
SOUND_ENABLE
NVM_WP
6073
6076
1001
VGA_5V
6
8
DDC
NVM
A3
1008
1007
SDM PINS
4015
SEL_IF
PC-TV-LED
SCL
SDA
56
7099
7
NV
2k x 8
EXT_MUTE
TV_SC_COM
TV_IRQ
STANDBY
POWER_DOWN
2007
2006
PC_DET
3470
5
HERCULES
(FRONT CONTROL LOOP THROUGH)
2
KEYBOARD
1
2
3
4
5
6
M
A7
KEYBOARD
IR
LED_SEL
+3V3STBY
PC_TV_LED
A1
A3
A1
A7
A5
A3
A5
FROM
SUPPLY
PAN E L
1910
1
2
3
4
5
6
7
8
9
10
11
12
A5
A3 A4
A4 A5
+5VSW+3V3STBY
60603062
7060
A2
UART
CONN.
FOR
SERVICE
TV-SUPPLY
F903
F905
F906
F907
POWER_DOWN
BACK_LIGHT_ADJ1
LAMP_ON_OFF
D
1112
1
2
3
AUD_SUP
+3V3STBY
+3V3STBY
+12VSW
STANDBY
FROM
A2
see
blockdiagram
VIDEO
A7
A3
A7
A3
A7
A2
SIDE AV
(UART PART)
3123
3124
3931
5930
A2 A3 A4
A2
A7
A7
R_SDTV
G_SDTV
B_SDTV
RED_PR
GREEN_Y
BLU_PB
HD_FILTER
SD_PCHD_SEL
PC_HD_SEL
H_CS_SDTV
V_SDTV
HS
VS
SD_PCHD_SEL
H_CS_SDTV
PLL_SEL
Y_NOTCH
+3V3STBY
7930
8
7
OSC
VCC
6
5920
13
13
1
12
2
7920
7463
10,11
SCALER (ANA IN)
A6
7401
GM5221
7461
27
3
17
7
25
1
5
21
22
R_PR+
14
G_Y+
11
B_PB+
23
3497
3499
3479
2466
2468
2470
SOG
R_PR-
G_Y-
B_PB-
ANALOG
INPUT
PORT
+
TRIPLE
ADC
&
PLL
7510
23 4
14
1
15
69 8
5
1111
1
2
3
4
3937
1
Q
S
R
5
2
3
4
REF
2
2931
3910
7910
2921
7520
MK1575-01
RECOVERY
1401
1
2
3
4
3936
5931
5910
CLOCK
PLL
5932
CS_HSYNC
VSYNC
30
69
F913
F911
6910
F912
12
2
+3V3STBY
7936
6911
F499
F503
PLL_SEL
+5
VSW
+VTUN
+8VSW_TV
A7
A9
Y_NOTCH
7403
M29W040B-55k1
FLASH
ROM
512kx8
7402
M24C32
EEPROM
(NVM)
4kx8
SDA
A2
JTAG_SDL_UART_TX
JTAG_SCL_UART_RX
SCL
SUPPLY
+3V3STBY
32
FBINFBIN
7955
N.C.
DATA
ADDRESS
1403
14M31818
SDA_IO
SCL_IO
3430
3431
3442
3441
1
169
170
WC
F954
2997
DVI
INPUT
VIDEO
ROM
INTERFACE
CLK_SYN
SYSTEM
+1V8
SCALER (LVDS, TTL OUT)
A7
LV DS
Tx
22
21
20
19
18
17
14
13
16
15
38
37
36
35
34
33
32
31
30
29
43
44
45
46
47
48
49
55
67
68
81
82
83
85
88
90
98
100
101
LV_E0_TX0-
LV_E1_TX0+
LV_E2_TX1-
LV_E3_TX1+
LV_E4_TX2-
LV_E5_TX2+
LV_E8_TX3-
LV_E9_TX3+
LV_E6_TXC-
LV_E7_TXC+
LV_ O 0
LV_ O 1
LV_ O 2
LV_ O 3
LV_ O 4
LV_ O 5
LV_ O 6
LV_ O 7
LV_ O 8
LV_ O 9
PD20
PD21
PD22
PD23
FED
FHSYNC
FVSYNC
FSHCLK
PANEL_PWR_CTL
LAMP_ON_OFF
TV_SC_COM
TV_IRQ
FBIN
PC_DET
SD_PCHD_SEL
POWER_DOWN
7437
BACK_LIGHT_ADJ1
PLL_SEL
BACK_LIGHT_ADJ2
PAN_VCC
EG1
EG0
ER7
ER6
ER5
ER4
ER1
ER0
ER3
ER2
EB3
EB2
EB1
EB0
EG7
EG6
EG5
EG4
EG3
EG2
EB4
EB5
EB6
EB7
A9
A5
A2
A2
A6
A8
A8
A2
A8
F534
LV_E0_TX0-
LV_E1_TX0+
LV_E2_TX1-
LV_E3_TX1+
LV_E4_TX2-
LV_E5_TX2+
LV_E6_TX3-
LV_E7_TX3+
LV_E8_TXC-
LV_E9_TXC+
FED
FHSYNC
FVSYNC
FSSYNC
PAN_VCC
A8
A3 A5
1404
1
2
3
4
6
8
10
12
18
20
14
16
1402
1
17
19
21
23
24x
25
27
29
31
33
35
37
39
42
38,36
A5
A5
E_14520_033.eps
230904
To LCD MONITOR (LVDS)
(MAINLY FOR 20”)
To LCD MONITOR (TTL)
Block Diagrams, Testpoint Overviews, and Waveforms
The Service Default Mode (SDM) and Service Alignment Mode
(SAM) are described in chapter 5. Menu navigation is done with
the cursor Up, Down, Left or Right keys of the remote control
transmitter.
8.4.1 SAM Menu
00022 LC41LS1 1.00/S41GV1 1.01 SDM
ERR 0 0 0 0 0
OP 000 057 140 032 120 128 000
8.2General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
Mains voltage and frequency: 100-240 V / 50/60 Hz.
Allow the set to warm up for approximately 10 minutes.
Test probe: Ri > 10 M ohm; Ci < 2.5 pF.
8.3Hardware Alignments
There are no hardware alignments foreseen for the LCD-TV.
8.4Software Alignments
With the software alignments of the Service Alignment Mode
(SAM) the geometry, white tone and tuner (IF) can be aligned.
To store the data: Use the RC button Menu to switch to the
main menu and next, switch to ‘Stand-by’ mode.
SAM SAM
. OP1 0. Delta Cool Red -3
. OP2 57 . Delta Cool Green -1
. OP3 140. Delta Cool Blue 5
. OP4 32
. OP5 120
. OP6 128
. OP7 0
00022
LC41LS1 1.00/S41GV1 1.01 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
In the White Tone sub menu the colour values for the colour
temperature values can be changed.
The colour temperature mode (Normal, Delta Cool, Delta
Warm) or the colour (R, G, B) can be selected with the Right/
Left cursor keys. The mode or value can be changed with the
Up/Down cursor keys.
First the values for the Normal colour temperature should be
selected. Range: 0-255, 128 represent the middle of the value
(no offset difference). Then the offset values for the Delta Cool
and Delta Warm mode can be selected. Note that the
alignment values are non-linear. The range is: -50 to +50, 0
represents the middle value, (no offset difference).
AGC (RF AGC Take Over Point)
Set pattern generator (e.g. PM5580) with colour bar pattern
and connect to aerial input with RF signal amplitude - 10mV
and set frequency for NTSC to 61.25 MHz.
•Activate the SAM-menu. Go to the sub-menu Tuner, select
the sub-menu option AFC Window and adjust the value to
100kHz.
•Select the AGC sub-menu.
•Connect a DC multi-meter to F306 pin1 of the tuner.
•Adjust the AGC until the voltage at pin 1 of the tuner is 3.3
Volts +0.5 / -1.0.
NORMALCOOLWARM
T (K)∆UVT (K)∆UVT (K)∆UV
Equipment and setting
•Quantum Data 802B.
•HD input signal, Top half 100% colour bar and bottom half
•Activate the auto colour function by pressing key-
sequence:
"INFO - MUTE - MUTE - MUTE - INFO - MENU - INFO”.
Expected Results
•Visual check if Colour bar tint and Grey scale is correct.
Alignments
EN 43LC4.1L AA8.
8.4.5 Sound
No adjustments needed for sound.
The default values for the audio alignments are:
•QSS: On
•FMI: Off
•NICAM Alignment: 63
•Lip Sync: Off
•DBE: Off
8.5Option Settings
Options are used to control the presence/absence of certain
features and hardware.
8.5.1 How to change an Option Byte
An Option Byte represents a number of different options.
Changing these bytes directly makes it possible to set all
options very fast. All options are controlled via seven option
bytes. Select the option byte (OP1.. OP7) with the cursor UP/
DOWN keys, and enter the new value.
Leaving the OPTION sub menu saves the changes in the
Option Byte settings. Some changes will only take effect after
the set has been switched “off” and “on” with the AC power
switch (cold start).
Table 8-2 Option codes (general overview for all displays)
Bit
(DEC) OptionDescription
7 (128) OP_PHILIPS_TUNERPhilips Tuner available1 1
6 (64) OP_FM_RADIOFM Radio available1 1
5 (32) OP_LNALow Noise Amplifier available0 0
4 (16) OP_ATSAuto Tuning System0 0
3 (8) OP_ACIAutomatic Channel Installation0 0
2 (4)OP_UK_PNPActivate Plug & Play menu at start-up 0 0
1 (2) OP_VIRGIN_MODEAfter virgin = English + Great Britain 0 0
0 (1) OP_CHINAAP-PAL tuning algorithm for China0 0
OP1 (DEC):192 192
OP1 (HEX):C0 C0
7 (128) OP_SCNot used0 0
6 (64) OP_UI_GREENUI for Magnavox sets (NAFTA)0 0
5 (32) OP_CHANNEL_NAMING Naming of channel feature available 0 0
4 (16) OP_LTIHistogr. algorithm available
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 Block Diagram
9.3 Power Supply
9.4 Input/Output
9.5 Tuner and IF
9.6 Video: TV Part (diagrams A1, A2, and A3)
9.7 Video: Scaler Part (diagrams A6, A7, and A8)
9.8 Audio Processing
9.9 Control
9.10 LCD Display
9.11 Abbreviation List
9.12 IC Data Sheets
9.1Introduction
The LC4.1 LCD TV is a global LCD TV for the year 2004. It is
the successor of the LC13 LCD TV and covers screens sizes
14, 15, 17, 20 and 23 inch (in both 4:3 and 16:9 ratio) with SP2
and ARCH3 styling.
This chassis has the following (new) features:
9.2Block Diagram
AC Mains Input
•Audio: The sound processor is part of the UOC processor
(called “Hercules”). The chassis has a FM Radio with 40
preset channels.
•Video: Enhanced video features, video drivers and Active
Control.
The architecture consists of a TV and Scaler panel with I/O,
Side I/O panel, Sound Amplifier Panel, Top Control Panel and
Power Supply panel.
The functions for video/audio processing, microprocessor (P),
and CC/Teletext (TXT) decoder are all combined in one IC
(TDA120xx, item 7011), the so-called third generation Ultimate
One Chip (UOC-III) or “Hercules”. This chip has the following
features:
•Control, small signal, mono/stereo, and extensive Audio/
Video switching in one IC.
•Upgrade with digital sound & video processing.
•Alignment free IF, including SECAM-L/L1 and AM.
•FM sound 4.5/5.5/6.0/6.5, no traps/bandpass filters.
•Full multi-standard color decoder.
•One Xtal reference for all functions (microprocessor, RCP,
TXT/CC, RDS, color decoder, and stereo sound
processor).
Main
Board
Tuner
TV/FM
IIC
Compair
(Service)
Audio amplifier(2x5w)
board for 20,23 inch
NVM
AV1
(Scart or
Cinch)
HERCULES
(VDP+STEREO)
Embedded
Flash
Audio
Amplifier(2x2
w)
RGB Output
H/V
Sync
Speakers
and HP
Power Supply
Video Buffer
555
trigger
circuits
H/V Sync
Low Pass
Filter
Jump
Switch
(74HC4053D)
VGA INPUT
Cinch_to_VGA
Adaptor
(YPbPr)
RGB or YPbPr
Video Filter
with LSI
(SM5301BS-
Schmitt
Triggers
SD_PCHD_SEL
PC
detect
circuit
VGA_5V
G)
PC_HD_SEL
Pin181,182
Pin85
(PC_DET)
GND( Industrial
mode)
+3V3STBY( normal
operation)
SOG, R_PR+, R_PR-,
G_Y+, G_Y-, B_PB+,
B_PB- signal producing
circuits
NVM
GM5221
Pin 111
Compair
(UART)
FLASH
Memory
LVDS/TTL
LCD
Panel
AUD_SUP
AUDIO CONTROL
SINGALS
(Standby, M ute,)
Side AV Audio Output CVBS/YC Input PC Audio Input UART (Optional)
Panel and HP output
Figure 9-1 Block Diagram LC4.1
E_14520_046.eps
160904
Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 45LC4.1L AA9.
The PLL tuner UR1316 (with FM radio) delivers the IF-signal,
via audio & video SAW-filters, to the Video Signal Processor
and FLASH embedded TEXT/Control/Graphics Micro
Controller TDA120x1 (item 7011, also called Hercules). This IC
has the following functions:
•Analogue Video Processing
•Sound Demodulation
•Audio Interfaces and switching
•Volume and tone control for loudspeakers
•Reflection and delay for loudspeaker channels
•Micro Controller
•Data Capture
•Display
The Hercules has one input for the internal CVBS signal and a
video switch with 3 external CVBS inputs and a CVBS output.
All CVBS inputs can be used as Y-input for Y/C signals.
However, only 2 Y/C sources can be selected because the
circuit has 2 chroma inputs. It is possible to add an additional
CVBS(Y)/C input (CVBS/YX and CX) when the YUV interface
and the RGB/YPRPB input are not needed. One SCARTconnector is used (SCART1). This connector is fully equipped.
The video part delivers the RGB signals to the Scaler IC.
The Genesis GM5221 Scaler IC receives either the SDTV
video input signals from the Hercules or the PC input signal
from an external computer. Switching between the two signals
is done via the SD/HD selection IC (7461).
After the video processing done by the Scaler, the digital data
is sent via a Low Voltage Differential Signalling bus to the LCD
panel. LVDS is used to improve data speed and to reduce EMI
significantly.
There are two I2C lines and two interrupt and communication
lines (TV_IRQ and TV_SC_COM) for the Scaler control. The
Scaler communicates with the Hercules as a slave device. To
avoid buffer overflow at the Scaler side, the TV_SC_COM line
provides the necessary hardware flow control. To allow bidirectional communication, the Scaler can initiate a service
interrupt-request to the Hercules via the TV_IRQ line.
The Hercules, and EEPROM are supplied with 3.3 V, which is
also present during STANDBY.
The EEPROM, or NVM (Non Volatile Memory) is used to store
the settings.
The sound part is built up around the Hercules. The Source
Selection, Decoding and Processing are all done by the
Hercules.
Power supply input are several DC voltages coming from a
supply panel.
9.4Input/Output
The I/O is divided over two parts: Rear I/O and Side I/O. The
rear I/O is integrated in the TV & Scaler board.
Table 9-2 I/O Connectivity
Screen
size
(inches)
17 XXXXXX
23 XXXXXX
Rear I/OSide I/O
Scart VGAY/CCVBS
+ L/R
9.5Tuner and IF
A Philips UR13xx Tuner with second input (for FM Radio) is
used in the TV board. The SIF and FM signals are decoded by
the Hercules. Tuning is done via I2C.
9.5.1Video IF amplifier
The IF-filter is integrated in a SAW (Surface Acoustic Wave)
filter. One for filtering IF-video (1328) and one for IF-audio
(1330). The type of these filters is depending of the standard(s)
that has to be received.
The output of the tuner is controlled via an IF-amplifier with
AGC-control. This is a voltage feedback from pin 31 of the
Hercules to pin 1 of the tuner. The AGC-detector operates on
top sync and top white level. AGC take-over point is adjusted
via the service alignment mode ’Tuner' - 'AGC’. If there is too
much noise in the picture, then it could be that the AGC setting
is wrong. The AGC-setting could also be mis-aligned if the
picture deforms with perfect signal; the IF-amplifier amplifies
too much.
HPPC
Audio
9.3Power Supply
For Service, this supply panel is a black box. When defect (this
can be traced via the fault-finding tips, or by strange
phenomena), a new panel must be ordered (see table below for
ordering codes), and after receipt, the defective panel must be
send for repair.
Table 9-1 Ordering Codes Power Supply
Screen size (inches)Ordering Code
173122 137 23040
233122 137 23070
EN 46LC4.1L AA9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.6Video: TV Part (diagrams A1, A2, and A3)
Tuner
AV1 In
(YPbPr or
CVBS for AP/
LATAM/USA)
SCART1 In
(CVBS,RGB,F
BL) only for
Europe
Side AV
(YC or CVBS)
for all region
Scart1 Out
CVBS for
Europe only
Video IF
CVBS_Y_IN
C_IN
Hercules
AM
Demodulator
CVBS1
Video Switching
Matrix
B/Pb-3(Pin 80)
G/Y-3(Pin 79)
R/Pr-3(Pin 78)
CVBS2/Y2(Pin 55)
INSSW3(Pin 77)
CVBS3/Y3(Pin 58)
C2/C3(Pin 59)
DVBO/IFVO/
FMRO(Pin 43)
De-
matrix
YUV
interface
and
processing
Sync
Separator
Ro
Go
Bo
V-SDTV(Pin 23)
to 555 trigger
circuit
H_CS_SDTV(Pin
67) to 555 trigger
circuit
when using SM5301BS, Low Pass Filter circuit is
not needed. Otherwise, LPF circuit is needed.
27
Video
Buffer and
Low Pass
Filter
25,1,5
SM5301BS-G Video
Filter LSI
3
7
VFC
MUXSEL
21
Schmitt
74HC4053
Trigger
Circuit
VGA D-sub
PC Input
(RGB-HV)
HD Input
RCA-to-VGA
Adaptor(YPbPr)
H/V
Through
22 23
181,182
Analog Input Port
RGB/
YPbPr,SOG
99
89
PC_HD_SEL
88
SD_PCHD_SEL
Scaler
E_14520_047.eps
LCD
Panel
160904
Figure 9-2 Block diagram video processing
The video processing is completely handled by the Hercules
•IF demodulator.
•Chrominance decoder
•Sync separator.
•Horizontal & vertical drive.
•RGB processing.
•CVBS and SVHS source select.
It has also build in features like:
•CTI.
•Black stretch.
•Blue stretch.
•White stretch.
•Slow start up.
•Dynamic skin tone correction etc.
Further, it also incorporates sound IF traps and filters, and
requires only one crystal for all systems.
9.7Video: Scaler Part (diagrams A6, A7, and A8)
The Genesis gm5221 Scaler is an all-in-one graphics and
video processing IC for LCD monitors and televisions with up
to XGA output resolutions. The Scaler controls the display
processing in an LCD TV, e.g. like the deflection circuit in a
CRT-based TV. It controls all the view modes (e.g. like
"zooming" and "shifting"). Features like PC (VGA) or HD inputs,
are also handled by this part.
9.7.2 Inputs
Analog RGB
The RGB input is fed to pins 142, 143, 147, 148, 151 and 152.
This input consists of either the Hercules RGB output or the
RGB/YpbPr input of the VGA connector. The Scaler can switch
between the two signals via the PC_HD_SEL signal and
selection IC SM5301 (7461).
PC (VGA) input
The VGA input is processed by the VGA block of the Scaler.
The Scaler supports up to 1080i and UXGA 60Hz formats.
DVI-D input
The DVI-D input is not supported by this chassis.
9.7.3 Output
The Display Output Port provides data and control signals that
permit the Scaler to connect to a variety of display devices
using a TTL or LVDS interface. The output interface has four
channel 6/8-bit LVDS transmitters and is configurable for single
or dual wide LVDS. All display data and timing signals are
synchronous with the DCLK output clock. The integrated LVDS
transmitter is programmable to allow the data and control
signals to be mapped into any sequence depending on the
specified receiver format.
9.7.1 Features
The Scaler provides several key IC functions:
•Scaling.
•Auto-configuration/ Auto-Detection.
•Various Input Ports:
– Analog RGB.
– Video Graphics.
•Integrated LVDS Transmitter.
•On-chip Micro-controller
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.8Audio Processing
EN 47LC4.1L AA9.
Hercules
SIF
Tuner
SSIF(FM)
Cinch 1 In (AV1) for
AP/LATAM/USA or
SCART1 In
for Europe
Side AV In for all
region
PC Audio In
SIF Input
SSIF Input
Audio-IN5L(Pin 34)
Audio-IN5R(Pin 35)
Audio-IN4L(Pin 49)
Audio-IN4R(Pin 50)
Audio-IN2L(Pin 53)
Audio-IN2R (Pin 54)
AUDOUTLSL(Pin 60)
AUDOUTLSR(Pin 61)
Figure 9-3 Block diagram audio processing
The audio decoding is done entirely via the Hercules. The IF
output from the Tuner is fed directly to either the Video-IF or the
Sound-IF input depending on the type of concept chosen.
There are mainly two types of decoder in the Hercules, an
analogue decoder that decodes only Mono, regardless of any
standards, and a digital decoder (or DEMDEC) that can decode
both Mono as well as Stereo, again regardless of any
standards.
In this chassis, the analogue decoder is used in two cases:
•It is used for AM Sound demodulation in the Europe
SECAM LL’ transmission.
•It is used for all FM demodulation in AV-Stereo sets.
AUDOUTSL(Pin 36)
AUDOUTSR(Pin 37)
Audio Power
Amplifier 2x2w
output
(TDA1517ATW
) for 14, 15, 17
inch
Amplifier 2x5w
output
(TDA7297D) for
20,23 inch
2 x 4 ohm
stereo
speaker
or
Headphone
(1) if HP is
used, the
main
speakers
will be
muted.
SCART1 Out
only for Europe
Control Signals
E_14520_048.eps
160904
•For the case of NAFTA and LATAM, there is only one
transmission standard, which is the M standard. The
diversity then will be based on whether it has a dBx noise
reduction or a Non-dBx (no dBx noise reduction).
•For the case of AP, the standard consists of BG/DK/I/M for
a Multi-System set. The diversity here will then depends on
the region. AP China can have a Multi-System and I/DK
version. For India, it might only be BG standard.
9.8.1 Diversity
The diversity for the Audio decoding can be broken up into two
main concepts:
•The Quasi Split Sound concept used in Europe and some
AP sets.
•The Inter Carrier concept, used in NAFTA and LATAM.
The UOC-III family makes no difference anymore between
QSS- and Intercarrier IF, nearly all types are softwareswitchable between the two SAW-filter constructions.
Simple data settings are required for the set to determine
whether it is using the Inter Carrier or the QSS concept. These
settings are done via the “QSS” and “FMI” bit found in SAM
mode. Due to the diversity involved, the data for the 2 bits are
being placed in the NVM location and it is required to write once
during startup.
On top of that, it can be further broken down into various
systems depending on the region. The systems or region
chosen, will in turn affect the type of sound standard that is/are
allowed to be decoded.
•For the case of Europe, the standard consists of BG/DK/I/
LL’ for a Multi-System set. There are also versions of
Eastern Europe and Western Europe set and the standard
for decoding will be BG/DK and I/DK respectively. FM
Radio is a feature diversity for the Europe sets. The same
version can have either FM Radio or not, independent of
the system (e.g. sets with BG/DK/I/LL’ can have or not
have FM radio).
EN 48LC4.1L AA9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.8.2 Functionality
The features available in the Hercules are as follows:
•Treble and Bass Control.
•Surround Sound Effect that includes:
– Incredible Stereo.
– Incredible Mono.
– 3D Sound (not for AV Stereo).
– TruSurround (not for AV Stereo).
– Virtual Dolby Surround, VDS422 (not for AV Stereo).
– Virtual Dolby Surround, VDS423 (not for AV Stereo).
– Dolby Pro-Logic (not for AV Stereo).
•Bass Feature that includes:
– Dynamic Ultra-Bass.
– Dynamic Bass Enhancement.
– BBE (not for AV Stereo).
•Auto-Volume Leveler.
•5 Band Equalizer.
•Loudness Control.
All the features stated are available for the Full Stereo versions
and limited features for the AV Stereo
9.8.3 Audio Amplifier
The audio amplifier part is very straightforward. There are two
different executions:
•17 inch: Amplification is done via the integrated power
amplifier TDA1517, and delivers a maximum output of 2 x
6 W_rms. Normal operating supply is from 6 V to 18 V.
• 23 inch: Amplification is done via the integrated power
amplifier TDA7297, and delivers a maximum output of 2 x
15 W_rms. Normal operating supply is from 6.5 V to 18 V.
Muting is done via the SOUND_ENABLE line connected to pin
13 of the amplifier-IC and coming from the Hercules.
9.8.4 Audio: Lip Sync
The LC4.1L is not equipped with Lip Sync. This is not needed.
9.9Control
9.9.1 Hercules
The System Board has two main micro-controllers on board.
These are:
•On-chip x86 micro-controller (OCM) from Genesis LCD TV/
Monitor Controller.
•On-chip 80C51 micro-controller from Philips
Semiconductor UOCIII (Hercules) series.
Each micro-controller has it own I2C bus which host its own
internal devices.
The Hercules is integrated with the Video and Audio Processor.
For dynamic data storage, such as SMART PICTURE and
SMART SOUND settings, an external NVM IC is being used.
Another feature includes an optional Teletext/Closed Caption
decoder with the possibility of different page storage depending
on the Hercules type number.
The Micro Controller ranges in ROM from 128 kB with no TXTdecoder to 128 kB with a 10 page Teletext or with Closed
Caption.
9.9.2 Block Diagram
The block diagram of the Micro Controller application is shown
below.
Tuner
ComPair
HREC
RST
Sel IF/
SDM
Status1
Light
Sense
P50_LINE_ITV_IR_SW
127
P1.4
114
P2.3
116
ADC1
115
ADC0
123
P2.5
Sound
Amp
Sound_Enable
111
P2.0
HERCULESSCALER
97
102
P0.4
122
P2.4
INT0
RC
128
P1.5
NVM
NVM_WP
104
P0.2
SDA 109
SCL 108
INT1 98
P1.1 99
ADC3 120
126
INT2
IIC BUS1
TV_IRQ
TV_SC_COM
Keyboard
POWER_DOWN
SDA
SCL
IIC BUS 2
93
NVRAM
_SDA
78 DDC_SDA_VGA
77 DDC_SCL_VGA
82 GPIO1
81 GPIO0
90 GPIO7
111
GPIO23
92
NVRAM
_SCL
103 106 107 108
NVM
NVM_WP
83
GPIO2
5 6 7
72
71
ROM_DATA0-7
GPROBE for Debug
or ComPair(Scaler)
1407
1406
1405
187193194
85
(GPIO4)
88
(GPIO5)
89
(GPIO6)
68
(PBIAS)
67
(PPWR)
99
(PWM1)
98
BACK_LIGHT_ADJ1
(GPIO11/
PWM0)
ROM_ADD0-17
+3V3STBY
PC_DET
SD_PCHD_SEL
PC_HD_SEL
LAMP_ON_OFF
PANEL_PWR_CTL
HD_FILTER
MUX
TV_IR
EXT_MUTE
Standby
+3V3STBY
HIGH or
LOW
POWER
DOWN
level input
Figure 9-4 Micro Controller block diagram
Flash ROM
E_14490_062.eps
160904
Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 49LC4.1L AA9.
9.9.3 Basic Specification
The Micro Controller operates at the following supply voltages:
•+3.3 V_dc at pins 4, 88, 94, and 109.
•+1.8 V_dc at pins 93, 96, and 117.
•I2C pull up supply: +3.3V_dc.
9.9.4 Pin Configuration and Functionality
The ports of the Micro Controller can be configured as follows:
•A normal input port.
•An input ADC port.
•An output Open Drain port.
•An output Push-Pull port.
•An output PWM port.
•Input/Output Port
9.10 LCD Display
9.10.1 Specifications
Panel model: LC171W03 (17”)
: QD23WL04 (23”)
Resolution (HxV): 1280x768 pixels (17”)
: 1280x768 (23”)
Luminance: 450 nit (17”)
: 450 nit (23”)
Supplier: LG.Philips LCD ( 17”)
: Quanta Displays Inc
(23”)
9.11 Abbreviation List
0/6/12SCART switch control signal on A/V
board. 0 = loop through (AUX to TV), 6
= play 16:9 format, 12 = play 4:3
means of a predefined TXT page
ADCAnalogue to Digital Converter
AFCAutomatic Frequency Control: control
signal used to tune to the correct
frequency
AGCAutomatic Gain Control: algorithm that
controls the video input of the feature
box
AMAmplitude Modulation
APAsia Pacific
ARAspect Ratio: 4 by 3 or 16 by 9
ASDAutomatic Standard Detection
AVAudio Video
B-SC1-INBlue SCART1 in
B-SC2-INBlue SCART2 in
B-TXTBlue teletext
B/GMonochrome TV system. Sound
carrier distance is 5.5 MHz
BOCMABimos one Chip Mid-end Architecture:
video and chroma decoder
C-FRONTChrominance front input
CBACircuit Board Assembly (or PWB)
CLConstant Level: audio output to
connect with an external amplifier
CLUTColour Look Up Table
ComPairComputer aided rePair
CSMCustomer Service Mode
CVBSComposite Video Blanking and
Synchronisation
CVBS-EXTCVBS signal from external source
(VCR, VCD, etc.)
CVBS-INTCVBS signal from Tuner
CVBS-MONCVBS monitor signal
CVBS-TER-OUTCVBS terrestrial out
DACDigital to Analogue Converter
DBEDynamic Bass Enhancement: extra
low frequency amplification
DFUDirections For Use: owner's manual
DNRDynamic Noise Reduction
DRAMDynamic RAM
DSPDigital Signal Processing
DSTDealer Service Tool: special
(European) remote control designed
for service technicians
DTSDigital Theatre Sound
DVDDigital Video Disc
EEPROMElectrically Erasable and
Programmable Read Only Memory
EPGElectronic Program Guide: system
used by broadcasters to transmit TV
guide information (= NexTView)
EPLDElectronic Programmable Logic
Device
EUEUrope
EXTEXTernal (source), entering the set by
SCART or by cinches (jacks)
FBLFast Blanking: DC signal
accompanying RGB signals
FBL-SC1-INFast blanking signal for SCART1 in
FBL-SC2-INFast blanking signal for SCART2 in
EN 50LC4.1L AA9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
FBL-TXTFast Blanking Teletext
FLASHFLASH memory
FMField Memory / Frequency Modulation
FMRFM Radio
FRCFrame Rate Converter
FRONT-CFront input chrominance (SVHS)
FRONT-DETECTFront input detection
FRONT-Y_CVBSFront input luminance or CVBS
(SVHS)
G-SC1-INGreen SCART1 in
G-SC2-INGreen SCART2 in
G-TXTGreen teletext
HH_sync to the module
HAHorizontal Acquisition: horizontal sync
pulse coming out of the BOCMA
HDHigh Definition
HPHeadPhone
IMonochrome TV system. Sound
carrier distance is 6.0 MHz
I2CIntegrated IC bus
I2SIntegrated IC Sound bus
ICIntegrated Circuit
IFIntermediate Frequency
InterlacedScan mode where two fields are used
to form one frame. Each field contains
half the number of the total amount of
lines. The fields are written in "pairs",
causing line flicker.
IRInfra Red
IRQInterrupt ReQuest
Last StatusThe settings last chosen by the
customer and read and stored in RAM
or in the NVM. They are called at start-
up of the set to configure it according
the customers wishes
LATAMLATin AMerica
LC04Philips chassis name for LCD TV 2004
project
LCDLiquid Crystal Display
LEDLight Emitting Diode
LINE-DRIVELine drive signal
L/L'Monochrome TV system. Sound
carrier distance is 6.5 MHz. L' is Band
I, L is all bands except for Band I
LSLoudSpeaker
LVDSLow Voltage Differential Signalling,
data transmission system for high
speed and low EMI communication.
M/NMonochrome TV system. Sound
carrier distance is 4.5 MHz
MOSFETMetal Oxide Semiconductor Field
Effect Transistor
MPEGMotion Pictures Experts Group
MSPMulti-standard Sound Processor: ITT
sound decoder
MUTEMUTE Line
NCNot Connected
NICAMNear Instantaneous Compounded
Audio Multiplexing. This is a digital
sound system, used mainly in Europe.
NTSCNational Television Standard
Committee. Colour system used
mainly in North America and Japan.
Colour carrier NTSC M/N = 3.579545
MHz, NTSC 4.43 = 4.433619 MHz
(this is a VCR norm, it is not
transmitted off-air)
NVMNon Volatile Memory: IC containing
TV related data (for example, options)
O/COpen Circuit
ON/OFF LEDOn/Off control signal for the LED
OSDOn Screen Display
P50Project 50 communication: protocol
between TV and peripherals
PALPhase Alternating Line. Colour system
used mainly in Western Europe
(colour carrier = 4.433619 MHz) and
South America (colour carrier PAL M =
3.575612 MHz and PAL N = 3.582056
MHz)
PCPersonal Computer
PCBPrinted Circuit Board (or PWB)
PIGPicture In Graphic
PIPPicture In Picture
PLLPhase Locked Loop. Used, for
example, in FST tuning systems. The
customer can directly provide the
desired frequency
Progressive ScanScan mode where all scan lines are
displayed in one frame at the same
time, creating a double vertical
resolution.
PWBPrinted Wiring Board (or PCB)
RAMRandom Access Memory
RCRemote Control transmitter
RC5Remote Control system 5, the signal
from the remote control receiver
RGBRed, Green, and Blue. The primary
and Vertical sync
ROMRead Only Memory
SAMService Alignment Mode
SIFSound Intermediate Frequency
SCSandCastle: two-level pulse derived
from sync signals
SC1-OUTSCART output of the MSP audio IC
SC2-B-INSCART2 Blue in
SC2-C-INSCART2 chrominance in
SC2-OUTSCART output of the MSP audio IC
S/CShort Circuit
SCARTSyndicat des Constructeurs
d'Appareils Radiorecepteurs et
Televisieurs
SCLCLock Signal on I2C bus
SDStandard Definition
SDADAta Signal on I2C bus
SDRAMSynchronous DRAM
SECAMSEequence Couleur Avec Memoire.
Colour system used mainly in France
and Eastern Europe. Colour carriers =
4.406250 MHz and 4.250000 MHz
SIFSound Intermediate Frequency
SMPSSwitch Mode Power Supply
SNDSouND
SNDL-SC1-INSound left SCART1 in
SNDL-SC1-OUTSound left SCART1 out
SNDL-SC2-INSound left SCART2 in
SNDL-SC2-OUTSound left SCART2 out
SNDR-SC1-INSound right SCART1 in
SNDR-SC1-OUTSound right SCART1 out
SNDR-SC2-INSound right SCART2 out
SNDR-SC2-OUTSound right SCART2 out
SNDS-VL-OUTSurround sound left variable level out
SNDS-VR-OUTSurround sound right variable level out
SOPSSelf Oscillating Power Supply
S/PDIFSony Philips Digital InterFace
SRAMStatic RAM
STBYSTandBY
SVHSSuper Video Home System
SWSubWoofer / SoftWare
THDTotal Harmonic Distortion
TXTTeleteXT
uPMicroprocessor
VAVertical Acquisition
VLVariable Level out: processed audio
output toward external amplifier
Circuit Descriptions, Abbreviation List, and IC Data Sheets
gg
VCRVideo Cassette Recorder
VGAVideo Graphics Array
WDWatch Dog
WYSIWYRWhat You See Is What You Record:
record selection that follows main
picture and sound
XTALQuartz crystal
YPbPrComponent video (Y= Luminance, Pb/
Pr= Colour difference signals)
Y/CLuminance (Y) and Chrominance (C)
signal
Y-OUTLuminance-signal
YUVComponent video
9.12 IC Data Sheets
This section shows the internal block diagrams and pin layouts
of ICs that are drawn as "black boxes" in the electrical diagrams
(with the exception of "memory" and "logic" ICs).
9.12.1 Diagram A7, Type GM5221 (IC7401)
gm5221 Functional Block Diagram
XTAL
NVRAM
GPIO
Keypad Sensing
Temp Sensor
EN 51LC4.1L AA9.
Parallel or Serial
EEPROM
Resetn
Analog
YUV/RGB
DVI
BT 656
Clock
Generation
Reset CCT
Triple
ADC&PLL
Schmitt
Tri
er
DDC2Bi
Ultra-
Reliable
DVI Rx
HDCP
DDC2Bi
422 to 444
Conversion
Test
Pattern
Generator
Serial
Master
3 X General-
Purpose ADC
GPIO
™gnissecorP egamI tnegilletnI
tnemecnahne egde htiw
/ erutpaC egamI
tn
e
m
e
rusa
e
M
retliF knirhS / mooZ
uv
Y
ACM-II
Chroma
Adjust
ACC
Luma
Shaping
Histogram
Figure 9-5 Internal Block Diagram
X86
Micro-controller
On-chip
RAM / ROM
noisrevnoC ecapS roloC
High-light Window
External
ROM I/F
OSD
Controller
stnemtsujdA roloC latigiD
elbaT-pu-kooL roloC
Display
Timing
Control
4 X
PWM
2 X
LVDS
Tx
E_14520_049.eps
011104
Back-light
LVDS
Panel I/F
EN 52LC4.1L AA9.
9.12.2 Diagram A2, Type TDA12029H (IC7011)
Circuit Descriptions, Abbreviation List, and IC Data Sheets
ros
kcolB
TUOMA/OSSQ
HCTIWS
VD/NIFIS
NIB
/OVFI/OBVD
ORMF
ORMF/OBVD
TUOC
GA
NIFIV
I
/OVS/OVF
ISBVC
CNYSY
2
C
Y/2SBV
3Y/3SBV
C
C/2
3
C
4Y/4SBVC
4
C
/OSBVC
PIP
FI DNUOS SSQ
CGA
EXIM SS
R
Q
ROTALUDOMED MA
CFA/CGA/FI NOISIV
.DOMED LLP
PART DNUOS
YALED PUORG
.PMA OEDIV
HCTIWS OEDIV
.TNEDI OEDI
V
SRETLIF OEDIV
YS V/H
.PES CN
LLP + .CSO-H
d
n
2
POOL
TFIHS-H
EVIRD-
H
secorp VT ”oerets-VA“ eht fo margaid
FISS
OFER
C
Y
V/H
TUOH
H4/H2
V
VIRD-V
D oidua htiw
PS
S
LLP DNUOS
SISAHPMEED
M
A
CSTN/MACES/LAP
REDOCED
FER
LATIGID
RETLIF BMOC
.JDA YALED Y
LACITRE
TSEW-TSAE &
YRTEMOEG
E
OTH
E
LB
Y/G
P/R
P/B
R
DWE
Pin configuration “stereo” and “AV-stereo” versions with Audio DSP