Copyright 2008 Koninklijke Philips Electronics N.V.
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.
Gn - Video Y 1 V
Bu - Video Pb 0.7 V
Rd - Video Pr 0.7 V
Wh - Audio L 0.5 V
Rd - Audio R 0.5 V
/ 75 ohm jq
PP
/ 75 ohm jq
PP
/ 75 ohm jq
PP
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
EN 4TPS1.2A LA1.
1.3Chassis Overview
Technical Specifications, Connections, and Chassis Overview
Figure 1-4 Chassis Overview
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Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
EN 5TPS1.2A LA2.
Index of this chapter:
2.1 Safety Instructions
2.2 Warnings
2.3 Notes
2.1Safety Instructions
Safety regulations require the following during a repair:
•Connect the set to the Mains/AC Power via an isolation
transformer (> 800 VA).
•Replace safety components, indicated by the symbol h,
only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.
Safety regulations require that after a repair, the set must be
returned in its original condition. Pay in particular attention to
the following points:
•Route the wire trees correctly and fix them with the
mounted cable clamps.
•Check the insulation of the Mains/AC Power lead for
external damage.
•Check the strain relief of the Mains/AC Power cord for
proper function.
•Check the electrical DC resistance between the Mains/AC
Power plug and the secondary side (only for sets that have
a Mains/AC Power isolated power supply):
1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug.
2. Set the Mains/AC Power switch to the “on” position
(keep the Mains/AC Power cord unplugged!).
3. Measure the resistance value between the pins of the
Mains/AC Power plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 MΩ and 12 MΩ.
4. Switch “off” the set, and remove the wire between the
two pins of the Mains/AC Power plug.
•Check the cabinet for defects, to prevent touching of any
inner parts by the customer.
2.2Warnings
•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.
•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
2.3.1General
•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.
2.3.2Schematic 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 kΩ).
•Resistor values with no multiplier may be indicated with
either an “E” or an “R” (e.g. 220E or 220R indicates 220 Ω).
•All capacitor values are given in micro-farads (μ=× 10
nano-farads (n =× 10
•Capacitor values may also use the value multiplier as the
decimal point indication (e.g. 2p2 indicates 2.2 pF).
•An “asterisk” (*) indicates component usage varies. Refer
to the diversity tables for the correct values.
•The correct component values are listed in the Spare Parts
List. Therefore, always check this list when there is any
doubt.
2.3.3BGA (Ball Grid Array) ICs
Introduction
For more information on how to handle BGA devices, visit this
URL: www.atyourservice.ce.philips.com (needs subscription,
not available for all regions). After login, select “Magazine”,
then go to “Repair downloads”. Here you will find Information
on how to deal with BGA-ICs.
BGA Temperature Profiles
For BGA-ICs, you must use the correct temperature-profile,
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 “Repair downloads”.
For additional questions please contact your local repair help
desk.
2.3.4Lead-free Soldering
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
•Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.
•Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able:
– To reach a solder-tip temperature of at least 400°C.
– To stabilize the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
•Adjust your solder tool so that a temperature of around
360°C - 380°C is reached and stabilized at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will increase drastically and flux-fluid will be destroyed.
To avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
•Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.
-9
), or pico-farads (p =× 10
-12
-6
),
).
EN 6TPS1.2A LA3.
2.3.5Alternative BOM identification
Note: on the European Service website, “Alternative BOM” is
referred to as “Design variant”.
The third digit in the serial number (example:
AG2B0335000001) indicates the number of the alternative
B.O.M. (Bill Of Materials) that has been used for producing the
specific TV set. In general, it is possible that the same TV
model on the market is produced with e.g. two different types
of displays, coming from two different suppliers. This will then
result in sets which have the same CTN (Commercial Type
Number; e.g. 28PW9515/12) but which have a different B.O.M.
number.
By looking at the third digit of the serial number, one can
identify which B.O.M. is used for the TV set he is working with.
If the third digit of the serial number contains the number “1”
(example: AG1B033500001), then the TV set has been
manufactured according to B.O.M. number 1. If the third digit is
a “2” (example: AG2B0335000001), then the set has been
produced according to B.O.M. no. 2. This is important for
ordering the correct spare parts!
For the third digit, the numbers 1...9 and the characters A...Z
can be used, so in total: 9 plus 26= 35 different B.O.M.s can be
indicated by the third digit of the serial number.
Identification: The bottom line of a type plate gives a 14-digit
serial number. Digits 1 and 2 refer to the production centre (e.g.
AG is Bruges), digit 3 refers to the B.O.M. code, digit 4 refers
to the Service version change code, digits 5 and 6 refer to the
production year, and digits 7 and 8 refer to production week (in
example below it is 2006 week 17). The 6 last digits contain the
serial number.
Directions for Use
MODEL :
PROD.NO:
32PF9968/10
AG 1A0617 000001
MADE IN BELGIUM
220-240V 50/60Hz
~
VHF+S+H+UHF
S
128W
BJ3.0E LA
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Figure 2-1 Serial number (example)
2.3.6Board Level Repair (BLR) or Component Level Repair
(CLR)
If a board is defective, consult your repair procedure to decide
if the board has to be exchanged or if it should be repaired on
component level.
If your repair procedure says the board should be exchanged
completely, do not solder on the defective board. Otherwise, it
cannot be returned to the O.E.M. supplier for back charging!
2.3.7Practical 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.
3.Directions for Use
You can download this information from the following websites:
•Figures below can deviate slightly from the actual situation,
due to the different set executions.
•Follow the disassembly instructions in the described order.
4.1Cable Dressing
Mechanical Instructions
EN 7TPS1.2A LA4.
Figure 4-1 Cable dressing
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EN 8TPS1.2A LA4.
Mechanical Instructions
4.2Service Positions
For easy servicing of this set, there are a few possibilities
created:
•The buffers from the packaging (see figure “Rear cover”).
•Foam bars (created for Service).
4.2.1Foam Bars
Required for sets
1
42"
4.3Assy/Panel Removal
4.3.1Base
Remove the marked screws to remove the base.
1
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Figure 4-3 Remove Base
4.3.2Rear Cover
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Figure 4-2 Foam bars
The foam bars (order code 3122 785 90580 for two pieces) can
be used for all types and sizes of Flat TVs. See figure “Foam
bars” for details. Sets with a display of 42” and larger, require
four foam bars [1]. Ensure that the foam bars are always
supporting the cabinet and never only the display.
Caution: Failure to follow these guidelines can seriously
damage the display!
By laying the TV face down 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 monitor
the screen.
1. Remove the marked screws, which secure the rear cover.
2. Lift the rear cover from the cabinet. Make sure that wires
and flat foils are not damaged during cover removal.
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Figure 4-4 Remove rear cover
Mechanical Instructions
EN 9TPS1.2A LA4.
4.3.3Power Board
1. Refer to next figure.
2. Unplug the marked connectors.
3. Remove the marked screws to remove the Power board.
When defective, replace the whole unit.
4.3.5Bezel
1. Refer to next figures.
2. Remove the marked screws to remove the bezel.
Figure 4-7 Bezel
4.3.6Bracket
1. Refer to next two figures.
2. Remove the marked screws to remove the brackets.
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Figure 4-5 Power Board
4.3.4Scaler Board
1. Refer to next figure.
2. Unplug the marked connectors.
3. Remove the marked screws to remove the Scaler board.
When defective, replace the whole unit.
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Figure 4-8 Bracket 1/2
Figure 4-9 Bracket 2/2
4.4Set Re-assembly
To re-assemble the whole set, execute all processes in reverse
order.
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Figure 4-6 Scaler Board
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Notes:
•While re-assembling, make sure that all cables are placed
and connected in their original position. See figure “Cable
dressing”.
EN 10TPS1.2A LA5.
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Mode
5.3 Service Tools
5.4 Tips and Tricks
5.1Test Points
This chassis is not equipped with test points in the service
printing.
5.2Service Mode
5.2.1Factory Mode
How to Enter
To enter the Factory mode, please use the following method:
•Press the remote control codes ”062596” + ”STATUS/
EXIT”. Then select “2K8 CH V1 06” in the menu and press
“OK” in order to enter the factory mode.
Caution: This function is meant for development and
service personnel only, not for end customers.
After entering the factory mode, the following screen is visible.
You can now select one of them and press OK.
Figure 5-3 Factory mode menu 2
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Figure 5-1 Factory mode menu 1 (19PFL3403/93)
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How to EXIT
Choose ‘EXIT”, then press “MENU” button on the remote
control.
5.2.2Customer Service Mode (CSM)
Purpose
When a customer is having problems with his TV-set, he can
call his dealer or the Customer Help desk. The service
technician can then ask the customer to activate the CSM in
order to identify the status of the set. Now, the service
technician can judge the severity of the complaint. In many
cases, he can advise the customer how to solve the problem,
or he can decide if it is necessary to visit the customer. The
CSM is read only mode; therefore, modifications in this mode
are not possible.
How to Activate CSM
Key in the codes ”123654” via the standard RC transmitter to
enter the Customer Service Mode.
How to Navigate
By mean of the “CURSOR-DOWN/UP” knob on the RCtransmitter on the screen.
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Figure 5-2 Factory mode menu 1 (19PFL3403/987& 19HFL3330/97)
Contents of CSM
Service Modes, Error Codes, and Fault Finding
EN 11TPS1.2A LA5.
Figure 5-4 CSM Menu (19PFL3403/93)
Figure 5-5 CSM Menu (19HFL3330/97)
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Figure 5-6 CSM Menu (19PFL3403/98)
Menu Explanation
1. Set Type: Type number and region.
2. Production code: Product serial no.
3. SW main-processor: SW-naming of Mstar/Trident.
4. SW other-processor: SW-naming of MCU.
5. Code 1: Logging I2C error codes in NVM/EEPROM (5 last
logged errors).
6. Code 2: Logging I2C error codes in NVM/EEPROM (5 first
logged errors).
For the error codes, please refer to the table below.
Error CodeError Code Type
0x01Audio decoder error
0x02I2C bus error
0x03Tuner error
0x04NVRAM error
0x05Scaler chip error
7. Key (HDCP): Indicates if the HDCP-key is valid.
8. NVM-Naming: Indicates the used LCD panel type and
region (NVM content and main SW depend on the used
LCD panel).
How to exit
Press ”MENU” on the RC-transmitter.
EN 12TPS1.2A LA5.
Service Modes, Error Codes, and Fault Finding
5.3Service Tools
5.3.1ComPair
Introduction
ComPair (Computer Aided Repair) is a Service tool for Philips
Consumer Electronics products. And offers the following:
1. ComPair helps you to quickly get an understanding on how
to repair the chassis in a short and effective way.
2. ComPair allows very detailed diagnostics and is therefore
capable of accurately indicating problem areas. You do not
have to know anything about I
yourself, because ComPair takes care of this.
3. ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the uP
is working) and all repair information is directly available.
4. ComPair features TV software upgrade possibilities.
Specifications
ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The (new) ComPair II interface box is connected to the PC via
a USB cable. For the TV chassis, the ComPair interface box
and the TV communicate via a bi-directional cable via the
service connector(s).
How to Connect
This is described in the ComPair chassis fault finding database.
TO
UART SERVICE
CONNECTOR
2
C or UART commands
TO TV
TO
I2C SERVICE
CONNECTOR
TO
UART SERVICE
CONNECTOR
5.3.2LVDS Tool
Support of the LVDS Tool has been discontinued.
5.4Tips and Tricks
Below find some repair tips and tricks.
5.4.1Soft Reset
When a consumer has forgotten his lock code, you can set the
TV back in Virgin mode by keying in the code”978450” via the
standard RC transmitter. The NVM is not erased.
The standard unlock code will then be “0711”.
5.4.2Hard Reset (erase NVRAM)
A hard reset is executed by together pressing the “P+” and “V+”
buttons on the TV, while unplugging and replugging the mains
cord.
Note: By using this hard reset mode, the TV will be brought
back in Virgin mode, but also all TV settings will be erased!
TV must completely be re-aligned via the “Factory” mode.
5.4.3Removal of Morning Star Microprocessor
The Morning Star uP is fitted with a so-called E-pad (see photo
below). This is an extra surface for cooling and grounding. This
E-pad is soldered to the PWB.
To remove/place this IC on the PWB, use dedicated
equipment.
ComPair II
RC in
Optional
Switch
PowerModeLink/
Activity
RC out
Multi
function
2
C
I
RS232 /UART
PC
ComPair II Developed by Philips Brugge
Optional power
HDMI
2
C only
I
5V DC
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Figure 5-7 ComPair II interface connection
Caution: It is compulsory to connect the TV to the PC as
shown in the picture above (with the ComPair interface in
between), as the ComPair interface acts as a level shifter. If
one connects the TV directly to the PC (via UART), ICs will be
blown!
Soldered E-Pad
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Figure 5-8 E-pad (photo from TPS1.0 chassis)
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How to Order
ComPair II order codes:
•ComPair II interface: 3122 785 91020.
•For SW see Philips service website.
•ComPair UART interface cable: 3122 785 90630.
Note: If you encounter any problems, contact your local
support desk.
Block Diagrams, Test Point Overview, and Waveforms
6.Block Diagrams, Test Point Overview, and Waveforms
Wiring Diagram
13TPS1.2A LA6.
Key
Board
4 Pin
CN0101
095T8013 2X912
4
095T8014 4X912
095T8013 2X911
Panel
1
CN7302
12 Pin
1
CN902
CN825
CN824
Power Board
12
11
CN7502
11 Pin
CN7201
30
30 Pin
1
089T179E30C921
MST98980CLD-LF
FFC Cable
U4201
4 Pin
4
CN7301
1
7 Pin
7
2 Pin 2Pin
1
2121
CN6101
CN6102
HEADPHONE
CN823
CN821
IR Board
AC IN
CN901
1
5 Pin
CN0201
1
AUDIO R/L
095T8014 7X909
VIDEO
S-VIDEO
5
Speaker R/L
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Block Diagrams, Test Point Overview, and Waveforms