Philips LC4.41A AA User manual

Published by EL 0667 BG CD Customer Service Printed in the Netherlands Subject to modification EN 3122 785 16160
©
Copyright 2006 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.
Colour Television Chassis
LC4.41A
AA
For manual SDI PDP see: 3122 785 16380/14990
For manual FHP PDP see: 3122 785 16400/14580
For manual LGE PDP see: 3122 785 16390/15590
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ME5FL
ME5FL
Contents Page Contents Page
1. Technical Specifications, Connections, and Chassis
Overview 2
2. Safety Instructions, Warnings, and Notes 5
3. Directions for Use 7
4. Mechanical Instructions 8
5. Service Modes, Error Codes, and Fault Finding 13
6. Block Diagrams, Test Point Overviews, and
Waveforms
Wiring Diagram 21
Block Diagram Video 22
Block Diagram Audio & Control 23
Test Point Overview Small Signal Board 24
I2C Overview 25
Supply Voltage Overview 26
7. Circuit Diagrams and PWB Layouts Diagram PWB
SSB: Tuner and IF (B1) 27 49-58
SSB: Hercules (B2) 28 49-58
SSB: Sync Interface (B3) 29 49-58
SSB: Audio Delay Line (PDP Only) (B4) 30 49-58
SSB: Audio Processing (B5) 31 49-58
SSB: DC-DC Converter (B6) 32 49-58
SSB: Diversity Tables B1-B6 33
SSB: Scaler (B7) 34 49-58
SSB: Scaler (B8) 35 49-58
SSB: Scaler Interface (B9) 36 49-58
SSB: SDRAM (B10) 37 49-58
SSB: Flash / Control (B11) 38 49-58
SSB: HDMI (B12) 39 49-58
SSB: MUX-Sync Interface (B13) 40 49-58
SSB: Top Connectors (B16) 41 49-58
SSB: Side Connectors (B17) 42 49-58
SSB: ADC (B18) 43 49-58
SSB: Columbus (B19) 44 49-58
SSB: Pacific 3 (B20) 45 49-58
SSB: Digital I/O (B22) 46 49-58
SSB: Cinch Analog I/O (B23) 47 49-58
SSB: Diversity Tables B9-B20 48
Audio Amplifier Panel: Amplifier (C1) 59 61
Audio Amplifier Panel: Connectors (C2) 60 61
Side I/O Panel(D) 62 63
Keyboard Control Board (E) 64 64
Front IR / LED Panel (42”) (J) 65 66
Front IR / LED Panel (50” ) (J) 67 68
8. Alignments 69
9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets 74
Abbreviation List 75
IC Data Sheets 77
10. Spare Parts List 81
11. Revision List 87

Technical Specifications, Connections, and Chassis Overview
EN 2 LC4.41A AA1.
1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Technical Specifications
1.2 Connection Overview
1.3 Chassis Overview
Notes:
• Figures can deviate due to the different set executions.
• Specifications are indicative (subject to change).
1.1 Technical Specifications
1.1.1 Vision
Display type : Plasma
Screen size :
- 42PF7320G/79/98 : 42” (107 cm), 16:9
- 50PF7320G/79/93/98 : 50” (127 cm), 16:9
Resolution (HxV pixels) :
- 42PF7320G/79/98 : 852 x 480
- 50PF7320G/79/93/98 : 1366 x 768
Contrast ratio : 3000:1
Light output (cd/m2) : 1000
Viewing angle (HxV degrees) : 160x160
Tuning system : PLL
TV Colour systems : PAL B/G, D/K, I
: SECAM B/G, D/K, L/L’
Video playback : NTSC M/N 3.58, 4.43
: PAL B/G
: SECAM L/L’
Supported computer formats : VGA (640x480)
: MAC (640x480)
: SVGA (800x600)
: XVGA (1024x768)
Supported video formats : 640x480p - 2fH
: 720x576p - 2fH
: 1280x720p - 3fH
: 1920x1080i - 2fH
Presets/channels : 100 presets
Tuner bands : VHF
:UHF
: S-band
: Hyper-band
1.1.2 Sound
Sound systems : NICAM B/G, D/K, I, L
: AV Stereo
Maximum power (WRMS) : 2 x 15
1.1.3 Miscellaneous
Power supply:
Mains voltage (VAC) : 90 - 276
Mains frequency (Hz) : 50 / 60
Ambient conditions:
- Temperature range (°C) : +5 to +40
- Maximum humidity : 90% R.H.
Power consumption:
Normal operation (W) :
- 42PF7320G/79/98 : 160
- 50PF7320G/79/98 : 290
- 50PF7320G/93 : 360
Stand-by (W) :
- all sets except 50PF7320G/93 : < 1
- 50PF7320G/93 : < 2
Dimensions
(WxHxD cm without stand) :
- 42” : 123.6 x 72.0 x 28.0
- 50” : 141.2 x 78.0 x 10.4
Weight (kg) :
- 42” : 39.0
- 50” : 50.0
1.2 Connection Overview
Figure 1-1 Rear and side I/O connections
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Technical Specifications, Connections, and Chassis Overview EN 3LC4.41A AA 1.
Note: The following connector colour abbreviations are used
(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=
Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1 Side I/O connections
S-Video (Hosiden): Video Y/C - In
1 - Ground Y Gnd H
2 - Ground C Gnd H
3 - Video Y 1 VPP / 75 ohm j
4 - Video C 0.3 VPP / 75 ohm j
Mini Jack: Audio Head phone - Out
Bk - Head phone 32 - 600 ohm / 10 mW ot
Cinch: Video CVBS - In, Audio - In
Wh - Audio L 0.5 VRMS / 10 kohm jq
Rd - Audio R 0.5 VRMS / 10 kohm jq
Ye - Video CVBS 1 VPP / 75 ohm jq
1.2.2 Rear Connections
HDMI1&2: Digital Video/Digital Audio - In
Figure 1-2 HDMI (type A) connector
1 - D2+ Data channel j
2 - Shield Gnd H
3 - D2- Data channel j
4 - D1+ Data channel j
5 - Shield Gnd H
6 - D1- Data channel j
7 - D0+ Data channel j
8 - Shield Gnd H
9 - D0- Data channel j
10 - CLK+ Data channel j
11 - Shield Gnd H
12 - CLK- Data channel j
13 - n.c.
14 - n.c.
15 - DDC_SCL DDC clock j
16 - DDC_SDA DDC data jk
17 - Ground Gnd H
18 - +5V j
19 - HPD Hot Plug Detect j
20 - Ground Gnd H
Cinch: DVI Audio - In
Rd - Audio - R 0.5 VRMS / 10 kohm jq
Wh - Audio - L 0.5 VRMS / 10 kohm jq
CVI-2/VGA: Video RGB - In
Figure 1-3 VGA Connector
1 - Video Red 0.7 VPP / 75 ohm j
2 - Video Green 0.7 VPP / 75 ohm j
3 - Video Blue 0.7 VPP / 75 ohm j
4-n.c.
5 - Ground Gnd H
6 - Ground Red Gnd H
7 - Ground Green Gnd H
8 - Ground Blue Gnd H
9-+5V
DC +5 V j
10 - Ground Sync Gnd H
11 - n.c.
12 - DDC_SDA DDC data j
13 - H-sync 0 - 5 V j
14 - V-sync 0 - 5 V j
15 - DDC_SCL DDC clock j
CVI-2/VGA: Cinch: Audio - In
Wh - Audio L 0.5 VRMS / 10 kohm jq
Rd - Audio R 0.5 VRMS / 10 kohm jq
AV: Cinch: Video CVBS - In, Audio - In
Wh - Audio L 0.5 VRMS / 10 kohm jq
Rd - Audio R 0.5 VRMS / 10 kohm jq
Ye - Video CVBS 1 VPP / 75 ohm jq
CVI-1: Cinch: Video YPbPr - In
Gn - Video Y 1 VPP / 75 ohm jq
Bu - Video Pb 0.7 VPP / 75 ohm jq
Rd - Video Pr 0.7 VPP / 75 ohm jq
CVI-1: Cinch: Audio - In
Wh - Audio L 0.5 VRMS / 10 kohm jq
Rd - Audio R 0.5 VRMS / 10 kohm jq
Aerial - In
- - IEC-type (EU) Coax, 75 ohm D
Service connector (UART)
1 - UART_TX Transmit k
2 - Ground Gnd H
3 - UART_RX Receive j
Service connector (ComPair)
1 - SDA-S I2C Data (0 - 5 V) jk
2 - SCL-S I2C Clock (0 - 5 V) j
3 - Ground Gnd H
19 1
18 2
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Technical Specifications, Connections, and Chassis Overview
EN 4 LC4.41A AA1.
1.3 Chassis Overview
Figure 1-4 PWB/CBA locations
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SMALL SIGNAL
BOARD
D
SIDE I/O PANEL
J
LED PANEL
E
CONTROL PANEL
C
AUDIO AMPLIFIER
PANEL

Safety Instructions, Warnings, and Notes EN 5LC4.41A AA 2.
2. Safety Instructions, Warnings, and Notes
Index of this chapter:
2.1 Safety Instructions
2.2 Warnings
2.3 Notes
2.1 Safety Instructions
Safety regulations require the following during a repair:
• Connect the set to the Mains/AC Power via an isolation
transformer (> 800 VA).
• Replace safety components, indicated by the symbol h,
only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.
Safety regulations require that after a repair, the set must be
returned in its original condition. Pay in particular attention to
the following points:
• Route the wire trees correctly and fix them with the
mounted cable clamps.
• Check the insulation of the Mains/AC Power lead for
external damage.
• Check the strain relief of the Mains/AC Power cord for
proper function.
• Check the electrical DC resistance between the Mains/AC
Power plug and the secondary side (only for sets that have
a Mains/AC Power isolated power supply):
1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug.
2. Set the Mains/AC Power switch to the "on" position
(keep the Mains/AC Power cord unplugged!).
3. Measure the resistance value between the pins of the
Mains/AC Power plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 Mohm and 12 Mohm.
4. Switch "off" the set, and remove the wire between the
two pins of the Mains/AC Power plug.
• Check the cabinet for defects, to prevent touching of any
inner parts by the customer.
2.2 Warnings
• All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD w). Careless handling
during repair can reduce life drastically. Make sure that,
during repair, you are connected with the same potential as
the mass of the set by a wristband with resistance. Keep
components and tools also at this same potential. Available
ESD protection equipment:
– Complete kit ESD3 (small tablemat, wristband,
connection box, extension cable and earth cable) 4822
310 10671.
– Wristband tester 4822 344 13999.
• Be careful during measurements in the high voltage
section.
• Never replace modules or other components while the unit
is switched "on".
• When you align the set, use plastic rather than metal tools.
This will prevent any short circuits and the danger of a
circuit becoming unstable.
2.3 Notes
2.3.1 General
• Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (H), or hot ground (I), depending
on the tested area of circuitry. The voltages and waveforms
shown in the diagrams are indicative. Measure them in the
Service Default Mode (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz for PAL, or
61.25 MHz for NTSC (channel 3).
• Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in 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= x10-6),
nano-farads (n= x10-9), or pico-farads (p= x10-12).
• Capacitor values may also use the value multiplier as the
decimal point indication (e.g. 2p2 indicates 2.2 pF).
• An "asterisk" (*) indicates component usage varies. Refer
to the diversity tables for the correct values.
• The correct component values are listed in the Spare Parts
List. Therefore, always check this list when there is any
doubt.
2.3.3 Rework on BGA (Ball Grid Array) ICs
General
Although (LF)BGA assembly yields are very high, there may
still be a requirement for component rework. By rework, we
mean the process of removing the component from the PWB
and replacing it with a new component. If an (LF)BGA is
removed from a PWB, the solder balls of the component are
deformed drastically so the removed (LF)BGA has to be
discarded.
Device Removal
As is the case with any component that, is being removed, it is
essential when removing an (LF)BGA, that the board, tracks,
solder lands, or surrounding components are not damaged. To
remove an (LF)BGA, the board must be uniformly heated to a
temperature close to the reflow soldering temperature. A
uniform temperature reduces the risk of warping the PWB.
To do this, we recommend that the board is heated until it is
certain that all the joints are molten. Then carefully pull the
component off the board with a vacuum nozzle. For the
appropriate temperature profiles, see the IC data sheet.
Area Preparation
When the component has been removed, the vacant IC area
must be cleaned before replacing the (LF)BGA.
Removing an IC often leaves varying amounts of solder on the
mounting lands. This excessive solder can be removed with
either a solder sucker or solder wick. The remaining flux can be
removed with a brush and cleaning agent.
After the board is properly cleaned and inspected, apply flux on
the solder lands and on the connection balls of the (LF)BGA.
Note: Do not apply solder paste, as this has been shown to
result in problems during re-soldering.

Safety Instructions, Warnings, and Notes
EN 6 LC4.41A AA2.
Device Replacement
The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be
aligned under a microscope or magnifying glass. If this is not
possible, try to align the (LF)BGA with any board markers.
So as not to damage neighbouring components, it may be
necessary to reduce some temperatures and times.
More Information
For more information on how to handle BGA devices, visit this
URL: www.atyourservice.ce.philips.com (needs subscription,
not available for all regions). After login, select “Magazine”,
then go to “Repair downloads”. Here you will find Information
on how to deal with BGA-ICs.
2.3.4 Lead-free Solder
Philips CE is producing lead-free sets (PBF) from 1.1.2005
onwards.
Identification: The bottom line of a type plate gives a 14-digit
serial number. Digits 5 and 6 refer to the production year, digits
7 and 8 refer to production week (in example below it is 1991
week 18).
Figure 2-1 Serial number example
Regardless of the special lead-free logo (which is not always
indicated), one must treat all sets from this date onwards
according to the rules as described below.
Figure 2-2 Lead-free logo
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
• Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.
• Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able:
– To reach a solder-tip temperature of at least 400°C.
– To stabilise the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
• Adjust your solder tool so that a temperature of around
360°C - 380°C is reached and stabilised at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will increase drastically and flux-fluid will be destroyed.
To avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
• Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to
avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.
• Use only original spare-parts listed in the Service-Manuals.
Not listed standard material (commodities) has to be
purchased at external companies.
• Special information for lead-free BGA ICs: these ICs will be
delivered in so-called "dry-packaging" to protect the IC
against moisture. This packaging may only be opened
shortly before it is used (soldered). Otherwise the body of
the IC gets "wet" inside and during the heating time the
structure of the IC will be destroyed due to high (steam-)
pressure inside the body. If the packaging was opened
before usage, the IC has to be heated up for some hours
(around 90°C) for drying (think of ESD-protection!).
Do not re-use BGAs at all!
• For sets produced before 1.1.2005, containing leaded
soldering tin and components, all needed spare parts will
be available till the end of the service period. For the repair
of such sets nothing changes.
In case of doubt whether the board is lead-free or not (or with
mixed technologies), you can use the following method:
• Always use the highest temperature to solder, when using
SAC305 (see also instructions below).
• De-solder thoroughly (clean solder joints to avoid mix of
two alloys).
Caution: For BGA-ICs, you must use the correct 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.
2.3.5 Alternative BOM identification
In September 2003, Philips CE introduced a change in the way
the serial number (or production number, see Figure 2-1) is
composed. From this date on, the third digit in the serial
number (example: AG2B0335000001) indicates the number of
the alternative BOM (Bill of Materials used for producing the
specific model of TV set). 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 O.E.M.s.
By looking at the third digit of the serial number, the service
technician can see if there is more than one type of B.O.M.
used in the production of the TV set he is working with. He can
then consult the At Your Service Web site, where he can type
in the Commercial Type Version Number of the TV set (e.g.
28PW9515/12), after which a screen will appear that gives
information about the number of alternative B.O.M.s used.
If the third digit of the serial number contains the number 1
(example: AG1B033500001), then there is only one B.O.M.
version of the TV set on the market. If the third digit is a 2
(example: AG2B0335000001), then there are two different
B.O.M.s. Information about 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.
2.3.6 Practical Service Precautions
•It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.
•Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions that are best avoided. Before reaching into a
powered TV set, it is best to test the high voltage insulation.
It is easy to do, and is a good service precaution.
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MODEL :
PROD.NO:
~
S
32PF9968/10
MADE IN BELGIUM
220-240V 50/60Hz
128W
AG 1A0617 000001
VHF+S+H+UHF
BJ3.0E LA
P
b

Directions for Use EN 7LC4.41A AA 3.
3. Directions for Use
You can download this information from the following websites:
http://www.philips.com/support
http://www.p4c.philips.com

Mechanical Instructions
EN 8 LC4.41A AA4.
4. Mechanical Instructions
Index of this chapter:
4.1 Cable dressing
4.2 Service Position
4.3 Assy/Panel Removal
4.4 Set Re-assembly
Notes:
• Figures below can deviate slightly from the actual situation,
due to the different set executions.
• Follow the disassembling instructions in described order.
4.1 Cable dressing
Figure 4-1 Cable dressing
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Mechanical Instructions EN 9LC4.41A AA 4.
4.2 Service Position
First, put the TV set in its service position. Therefore, place it
upside down on a table top (use a protection sheet or foam
bars).
4.2.1 The 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 TV flat on
the (ESD protective) foam bars, a stable situation is created to
perform measurements and alignments. By first placing a
mirror flat on the table under the TV you can easily see if
something is happening on the screen.
4.3 Assy/Panel Removal
4.3.1 Rear Cover
Warning: Disconnect the mains power cord before you remove
the rear cover.
1. Remove the screws that secure the rear cover.
2. Lift the rear cover from the cabinet cautiously. Make sure
that wires and other internal components are not damaged
during cover removal.
4.3.2 Side I/O Panel
Figure 4-3 Side I/O panel
1. Remove the rear panel.
2. Remove the screw from the cable clip [1].
3. Remove the screws [2] from the loudspeaker cabinet.
4. Lift the loudspeaker cabinet from the frame.
5. Disconnect the cable [3] from the panel.
6. Remove the fixation screws [4], and slide the panel out of
its bracket.
4.3.3 LED Panel
Figure 4-4 LED panel
1. Remove the rear panel.
2. Disconnect the cable [1] from the panel.
3. Remove the fixation screws [2].
4. Remove the panel.
4.3.4 Keyboard Control Panel
Figure 4-5 Keyboard control panel
1. Remove the rear panel.
2. Remove the screws [1] from the loudspeaker cabinet.
3. Lift the loudspeaker cabinet from the frame.
4. Release the three fixation clamps [2] and pull the panel out
of the bracket.
5. Disconnect the cable [3] from the panel.
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Mechanical Instructions
EN 10 LC4.41A AA4.
4.3.5 Small Signal Board
Figure 4-6 SSB connectors
Figure 4-7 Connector screws (picture taken from EU model)
1. Very cautiously disconnect the LVDS cable [1] from the
panel (see Figure “SSB connectors”). Notice that this
connector is very fragile.
2. Disconnect the other cables [2] from the panel.
3. Remove the fixation screws [3].
4. Remove the fixation screws [4] from the connector plate
(see Figure “Connector screws”).
5. Slide the SSB module a few centimetres away from the
connector plate (see Figure “SSB shield”).
6. Remove the fixation screws [5] and lift the shield from the
SSB module.
7. Disconnect connector [6] (see Figure “SSB panel”).
8. Unlock the catches [7] and lift the OTC TXT panel from the
SSB panel.
9. Remove the fixation screws [8].
10. Remove the SSB panel.
Figure 4-8 SSB shield
Figure 4-9 SSB panel
4.3.6 Audio Amplifier Panel
Figure 4-10 Audio amplifier panel
1. Disconnect all cables [1] from the panel.
2. Remove the fixation screws [2] from the panel.
3. Remove the panel.
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Mechanical Instructions EN 11LC4.41A AA 4.
4.3.7 Plasma Panel
Figure 4-11 Plasma panel removal (1/3)
Figure 4-12 Plasma panel removal (2/3)
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Mechanical Instructions
EN 12 LC4.41A AA4.
Figure 4-13 Plasma panel removal (3/3)
To remove the Plasma-panel, carry out the following steps:
1. Remove the rear cover from the set.
2. Cautiously unplug the LVDS connector [1] from the SSB
panel (see Figure “LVDS connector”).
Be careful, as this is a very fragile connector/cable!
3. Unplug the other connectors [2] from the SSB panel.
4. Unplug the connectors 1M03 and 1M46 [3] from the Power
Supply board.
5. Unplug the power connector CN1305 [4] from the Power
Supply board.
6. Unplug the connectors [5] from the Audio Panel.
7. Loosen the fixation screw [6] from the earth tab on the
display.
8. Loosen the fixation screw [7] just above the SSB panel.
9. Loosen screw [8] with the cable clamp.
10. Release all disconnected cables from the (mostly plastic)
guidances on the frame.
11. Loosen screws [9].
12. Lift the metal frame [10] (together with the SSB) from the
plasma panel.
13. Cautiously unplug the LVDS connector [11] from the Logic
Board of the Plasma panel (see Figure “Logic Board”).
Be careful, as this is a very fragile connector/cable!
14. Remove the bronze spacer [12] from the stud on the
plasma panel.
15. Now you can lift the Plasma display from its plastic frame.
16. If the plastic frame is damaged, replace it by a new frame,
after removing the loudspeakers, the Side I/O panel, the
Side Control panel, and the LED panel.
4.4 Set Re-assembly
To re-assemble the whole set, execute all processes in reverse
order.
Notes:
• While re-assembling, make sure that all cables are placed
and connected in their original positions. See Figure “Cable
dressing”.
Be careful with the fragile LVDS cable.
G_16240_022.eps
160206
12
11

Service Modes, Error Codes, and Fault Finding EN 13LC4.41A AA 5.
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Problems and Solving Tips Related to CSM
5.4 Service Tools
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Fault Finding and Repair Tips
5.1 Test Points
This chassis is equipped with test points. In the schematics,
test points are indicated with a rectangle box around Fxxx or
Ixxx, in the layouts with a half-moon.
Perform measurements under the following conditions:
• Television set in Service Default Mode.
• Video input: Colour bar signal.
• Audio input: 3 kHz left channel, 1 kHz right channel.
5.2 Service Modes
Service Default mode (SDM) and Service Alignment Mode
(SAM) offer 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 possibilities of structured troubleshooting, error code
reading, and software version read-out 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.
Specifications
Table 5-1 SDM default settings
• 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).
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 one of the "Service" jumpers (component or solder
side) on the TV board during cold start and apply mains
(see Figures "Service jumper"). Then press the mains
button (remove the short after start-up).
Caution: Entering SDM by shorting "Service" jumpers will
override the +8V-protection. Do this only for a short period.
When doing this, the service-technician must know exactly
what he is doing, as it could damage the television set.
• Or via ComPair.
Figure 5-1 Service jumper (component side)
Figure 5-2 Service jumper (solder side)
After entering SDM, the following screen is visible, with SDM in
the upper right corner of the screen to indicate that the
television is in Service Default Mode.
Region Freq. (MHz)
Default
system
Europe, AP-PAL/Multi 475.25 PAL B/G
NAFTA, AP-NTSC, LATAM 61.25 (ch. 3) NTSC M
G_16210_087.eps
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SDM
G_16210_088.eps
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SDM

Service Modes, Error Codes, and Fault Finding
EN 14 LC4.41A AA5.
Figure 5-3 SDM menu (example)
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; or press the following key
sequence on the remote control transmitter: “062596”
directly followed by the OSD button to switch to SAM (do
not allow the display to time out between entries while
keying the sequence).
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.
• 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/INFO(I+) 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.
Figure 5-4 SAM menu (example)
Menu Explanation
1. LLLLL. This represents the run timer. The run timer counts
normal operation hours, but does not count standby hours.
2. AAAAABC X.YY. This is the software identification of the
main microprocessor:
–A= the project name.
–B= the region: E= Europe, A= Asia Pacific, U= NAFTA,
L= LATAM.
–C= 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).
3. EEEEE F.GG. This is the software identification of the
Scaler:
–EEEEEE= the scaler sw cluster
–F= the main sw version no.
–GG= the sub-version no.
4. SAM. Indication of the Service Alignment Mode.
5. Error Buffer. Shows all errors detected since the last time
the buffer was erased. Five errors possible.
6. Option Bytes. Used to read-out the option bytes. See
“Options” in the Alignments section for a detailed
description. Seven codes are possible.
7. 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.
8. Options. Used to set the option bits. See “Options” in the
Alignments section for a detailed description.
9. Tuner. Used to align the tuner. See “Tuner” in the
Alignments section for a detailed description.
10. White Tone. Used to align the white tone. See “White
Tone” in the Alignments section for a detailed description.
11. Audio. No audio alignment is necessary for this television
set.
12. NVM Editor. Can be used to change the NVM data in the
television set. See table “NVM data” further on.
13. SC NVM Editor. Can be used to edit Scaler NVM.
14. Test Pattern. This will trigger the scaler to generate a
checkerboard test pattern. Only applicable to PDP sets.
15. ComPaIr. Can be used to switch on the television to In
System Programming (ISP) mode, for software uploading
via ComPair.
00035 HSD21E1 1.00/S21LXN 1.00 SDM
ERR 0 0 0 0 0
OP 152 167 015 081 252 127 019
G_16210_089.eps
200106
G_16210_090.eps
110706
00035 HSD21E1 1.00/S21LXN 1.00 SAM
ERR 0 0 0 0 0
OP 152 167 015 081 252 127 019
. Clear Clear ?
. Options
. Tuner
. White Tone
. Audio
. NVM Editor
. SC NVM Editor
. Test Pattern
. ComPair Mode On

Service Modes, Error Codes, and Fault Finding EN 15LC4.41A AA 5.
Caution: When this mode is selected without ComPair
connected, the TV will be blocked. Remove the AC power
to reset the TV.
How to Navigate
• In SAM, select menu items with the MENU UP/DOWN keys
on the remote control transmitter. The selected item will be
indicated. 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 button.
• When you press the MENU key in while in a submenu, you
will return to the previous menu.
• On the TV, press and hold the VOLUME DOWN and press
the CHANNEL DOWN for a few seconds, to switch from
SAM to SDM and reverse; or press the following key
sequence on the remote control transmitter: “062596”
directly followed by the MENU button to switch to SDM (do
not allow the display to time out between entries while
keying the sequence).
How to Store SAM Settings and Exit the SAM Menu
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. This also exits the SAM menu.
Caution: If you turn the television set “off” by removing the
mains (i.e., unplugging the television) without using the
POWER button, the television set will remain in SAM when
mains is re-applied, and the error buffer is not cleared.
5.2.3 Customer Service Mode (CSM)
Purpose
The Customer Service Mode shows error codes and
information on the TV’s operation settings. The call centre can
instruct the customer (by telephone) to enter CSM in order to
identify the status of the set. This helps the call centre to
diagnose problems and failures in the TV set before making a
service call.
The CSM is a read-only mode; therefore, modifications are not
possible in this mode.
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:
Figure 5-5 CSM menu (example)
Menu Explanation
1. Indication of the decimal value of the operation hours
counter, Main/Scaler software version (see “Service
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. aaaaaa / b.ccc Firmware identification of the Pacific 3 and
the OTC:
–aaaaaa = the firmware version of the Pacific 3 (Pixel+)
–b.ccc = the firmware version of the OTC (for the 1000
page TXT decoder).
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 button twice, or POWER button on the
remote control transmitter.
• Press the POWER button on the television set.
5.3 Problems and Solving Tips Related to CSM
5.3.1 Picture Problems
Note: The problems described below are all related to the TV
settings. The procedures used to change the value (or status)
of the different settings are described.
Picture too Dark or too Bright
If:
• The picture improves when you press the SMART
PICTURE button on the remote control transmitter, or
• The picture improves when you enter the Customer
Service Mode,
1 00035 HSD21E1 1.00/S21LXN 1.00 CSM
2 CODES 0 0 0 0 0
3 OP 152 167 015 081 252 127 019
4 26PF5321/10
5 AAAAAA/B.CC
6 NOT TUNED
7 PAL
8 STEREO
9 CO 50 CL 50 BR 50
0 AVL Off
G_16210_091.eps
200106

Service Modes, Error Codes, and Fault Finding
EN 16 LC4.41A AA5.
Then:
1. Press the SMART 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 select 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 value of the selected parameter.
7. Use the MENU UP/DOWN keys to select STORE.
8. Press the MENU RIGHT key to store the new value.
9. Press the MENU key to exit the PERSONAL picture mode.
White Line around Picture Elements and Text
If:
The picture improves after you have pressed the SMART
PICTURE button on the remote control transmitter,
Then:
1. Press the SMART 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 select 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
SHARPNESS.
6. Press the MENU LEFT/RIGHT keys to increase or
decrease the value of the selected parameter.
7. Use the MENU UP/DOWN keys to select STORE.
8. Press the MENU RIGHT key to store the new value.
9. Press the MENU key to exit the PERSONAL picture mode.
Snowy Picture
Check CSM line 6. If this line reads “Not Tuned”, check the
following:
• Antenna not connected. Connect the antenna.
• No antenna signal or bad antenna signal. Connect a proper
antenna signal.
• The tuner is faulty (in this case line 2, the Error Buffer line,
will contain error number 10). Check the tuner and replace/
repair the tuner if necessary.
Black and White Picture
If:
• The picture improves after you have pressed the SMART
PICTURE button on the remote control transmitter,
Then:
1. Press the SMART 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 select 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
COLOUR.
6. Press the MENU LEFT/RIGHT keys to increase or
decrease the value of the selected parameter.
7. Use the MENU UP/DOWN keys to select STORE.
8. Press the MENU RIGHT key to store the new value.
9. Press the MENU key to exit the PERSONAL picture mode.
5.4 Service Tools
5.4.1 ComPair
Introduction
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
1. ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.
2. ComPair allows very detailed diagnostics (on I2C level) and
is therefore capable of accurately indicating problem areas.
You do not have to know anything about I2C commands
yourself because ComPair takes care of this.
3. ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the Force/SearchMan electronic manual of the defective
chassis, schematics and PWBs are only a mouse click
away.
Specifications
ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
(or RS-232) cable.
For this chassis, the ComPair interface box and the TV
communicate via a bi-directional service cable via the service
connector(s).
The ComPair fault finding program is able to determine the
problem of the defective television. ComPair can gather
diagnostic information in two ways:
• Automatically (by communicating with the television):
ComPair can automatically read out the contents of the
entire error buffer. Diagnosis is done on I2C/UART level.
ComPair can access the I2C/UART bus of the television.
ComPair can send and receive I2C/UART commands to
the micro controller of the television. In this way, it is
possible for ComPair to communicate (read and write) to
devices on the I2C/UART buses 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 extent.
When this is not the case, ComPair will guide you through
the fault finding tree by asking you questions (e.g. Does the
screen give a picture? Click on the correct answer: YES /
NO) and showing you examples (e.g. Measure test-point I7
and click on the correct oscillogram you see on the
oscilloscope). You can answer by clicking on a link (e.g.
text or a waveform picture) that will bring you to the next
step in the fault finding process.
By a combination of automatic diagnostics and an interactive
question / answer procedure, ComPair will enable you to find
most problems in a fast and effective way.

Service Modes, Error Codes, and Fault Finding EN 17LC4.41A AA 5.
How to Connect
This is described in the chassis fault finding database in
ComPair.
Figure 5-6 ComPair interface connection
How to Order
• ComPair order codes (EU/AP/LATAM):
• Starter kit ComPair32/SearchMan32 software and
ComPair interface (excl. transformer): 3122 785 90450.
• ComPair interface (excl. transformer): 4822 727 21631.
• Starter kit ComPair32 software (registration version): 3122
785 60040.
• Starter kit SearchMan32 software: 3122 785 60050.
• ComPair32 CD (update): 3122 785 60070 (year 2002),
3122 785 60110 (year 2003 onwards).
• SearchMan32 CD (update): 3122 785 60080 (year 2002),
3122 785 60120 (year 2003), 3122 785 60130 (year 2004).
• ComPair firmware upgrade IC: 3122 785 90510.
• Transformer (non-UK): 4822 727 21632.
• Transformer (UK): 4822 727 21633.
• ComPair interface cable: 3122 785 90004.
• ComPair interface extension cable: 3139 131 03791.
• ComPair UART interface cable: 3122 785 90630.
Note: If you encounter any problems, contact your local
support desk.
5.4.2 LVDS Tool
Introduction
This service tool (also called “ComPair Assistant 1“) may help
you to identify, in case the TV does not show any picture,
whether the Small Signal Board (SSB) or the display of a Flat
TV is defective.
Furthermore it is possible to program EPLDs with this tool (Byte
blaster). Read the user manual for an explanation of this
feature.
Since 2004, the LVDS output connectors in our Flat TV models
are standardised (with some exceptions). With the two
delivered LVDS interface cables (31p and 20p) you can cover
most chassis (in special cases, an extra cable will be offered).
When operating, the tool will show a small (scaled) picture on
a VGA monitor. Due to a limited memory capacity, it is not
possible to increase the size when processing high-resolution
LVDS signals (> 1280x960). Below this resolution, or when a
DVI monitor is used, the displayed picture will be full size.
Generally this tool is intended to determine if the SSB is
working or not. Thus to determine if LVDS, RGB, and sync
signals are okay.
How to Connect
Connections are explained in the user manual, which is packed
with the tool.
Note: To use the LVDS tool, you must have ComPair release
2004-1 (or later) on your PC (engine version >= 2.2.05).
For every TV type number and screen size, one must choose
the proper settings via ComPair. The ComPair file will be
updated regularly with new introduced chassis information.
How to Order
• LVDS tool (incl. two LVDS cables: 31p and 20p):
3122 785 90671.
• LVDS tool Service Manual:
3122 785 00810.
• LVDS cable 31p/FI -> 31p/FI (for JL2.1 chassis):
3122 785 90861.
• LVDS cable 30p/DF -> 31p/FI (for LC4.3 chassis):
3122 785 90821.
• LVDS cable 41p/FI -> 31p/FI (dual -> single LVDS):
3122 785 90831.
• LVDS cable 20p/DF -> 20p/DF (standard with tool):
3122 785 90731.
• LVDS cable 31p/FI -> 31p/FI (standard with tool):
3122 785 90662.
• LVDS cable 20p/DF -> 20p/DF (for LC4.1 chassis):
3122 785 90851.
5.5 Error Codes
The error code buffer contains all errors detected since the last
time the buffer was erased. The buffer is written from left to
right. When an error occurs that is not yet in the error code
buffer, it is displayed at the left side and all other errors shift one
position to the right.
5.5.1 How to Read the Error Buffer
You can read the error buffer in 3 ways:
• On screen via the SAM (if you have a picture).
Examples:
– ERROR: 0 0 0 0 0 : No errors detected
– ERROR: 6 0 0 0 0 : Error code 6 is the last and only
detected error
– ERROR: 9 6 0 0 0 : Error code 6 was detected first and
error code 9 is the last detected (newest) error
• Via the blinking LED procedure (when you have no
picture). See “The Blinking LED Procedure”.
•ViaComPair.
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/i+ button (do not allow the display to time
out between entries while keying the sequence).
– Make sure the menu item CLEAR is selected. 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.
E_06532_021.eps
180804
PC VCR I2CPower
9V DC
TO
UART SERVICE
CONNECTOR
TO
I2C SERVICE
CONNECTOR

Service Modes, Error Codes, and Fault Finding
EN 18 LC4.41A AA5.
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 5-2 Error code overview
5.6 The Blinking LED Procedure
Using this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful when
there is no picture.
When the SDM is entered, the front LED will blink the contents
of the error-buffer:
• The LED blinks with as many pulses as the error code
number, followed by a time period of 1.5 seconds, in which
the LED is off.
• Then this sequence 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 with 12 short blinks.
5.7 Fault Finding and Repair Tips
Notes:
• It is assumed that the components are mounted correctly
with correct values and no bad solder joints.
• Before any fault finding actions, check if the correct options
are set.
5.7.1 NVM Editor
In some cases, it can be handy if one directly can change the
NVM contents. This can be done with the “NVM Editor” in SAM
mode. With this option, single bytes can be changed.
Caution:
•Do not change the NVM settings without
understanding the function of each setting, because
incorrect NVM settings may seriously hamper the
correct functioning of the TV set!
•Do not change the Scaler NVM settings, as this will
hamper the DVI / HDMI functionality of the TV set!
• Always note down the existing NVM settings, before
changing the settings. This will enable you to return to the
original settings, if the new settings turn out to be incorrect.
Table 5-3 NVM editor overview
Error Error Description Check Item Diagram
0 No Error
1 Mis-match of TV (Hercules)
SW and Scaler SW
Software
versions
N.A.
2 +12V from PSU error PSU A
3PlasmaI
2C error (only for
plasma sets)
N.A. N.A.
4I
2C error while
communicating with the
Genesis Scaler
7801 B7 + B8
5 +5V protection 7752 B6
6 General I2C error;
communication between
ADC, analogue tuner, and/or
Columbus I2C failed
1102, 7L01,
7M00
B1 + B18
+ B19
7I
2C error while
communicating with ADC
7L01 B18
8I
2C error while
communicating with the
Scaler EEPROM
7C01 B11
9I
2C error while
communicating with the
Hercules EEPROM (NVM for
TV).
Remark: when the Hercules
EEPROM is defective, the
Hercules should operate with
its default values.
7207 B2
10 I2C error while
communicating with the PLL
tuner
1102 B1
11 I2C error while
communicating with the 3D
combfilter IC-7M00
(Columbus)
7M00 B19
12 I2C error while
communicating with iBoard
uP (only iTV sets)
N.A. N.A.
13 I2C error while
communicating with the
HDMI decoder IC-7D03 (only
for NAFTA and AP)
N.A. N.A.
14 Read-write error with the
Scaler SDRAM
7B01 B10
15 I2C error while
communicating with the OTC
7001 T
16 I2C error while
communicating with EPLD or
Pacific III
7N00 B20
17 I2C error while
communicating with the
Digital Module (only for digital
sets)
N.A. N.A.
Hex Dec Description
.ADR 0x000A 10 Existing value
.VAL 0x0000 0 New value
.Store Store?

Service Modes, Error Codes, and Fault Finding EN 19LC4.41A AA 5.
5.7.2 Load Default NVM Values
In case a blank NVM is placed or when the NVM content is
corrupted, default values can be downloaded into the NVM.
(For empty NVM replacement, short the SDM with a jumper
and apply the mains voltage. Remember to remove the jumper
after the reload is completed). After the default values are
downloaded, it will be possible to start up and to start aligning
the TV set. This is no longer initiated automatically; to initiate
the download the following action has to be performed:
1. Switch “off” the TV set by disconnecting the AC Power
plug.
2. Short circuit an SDM jumper (keep short-circuited).
3. Press P+ or Ch+ on the local keyboard (and keep it
pressed).
4. Switch on the TV set via the AC Power plug.
5. Keep pressing the P+/Ch+ button until the set has started
up and the SDM is shown.
Alternative method:
1. Go to SAM.
2. Select NVM Editor (not SC NVM Editor).
3. Select ADR (address) to 1 (dec).
4. Change the VAL (value) to 170 (dec).
5. Store the value.
6. Disconnect the mains plug and wait for a few seconds.
7. Reconnect the mains plug and wait until the set goes into
its standby mode (red LED lights up).
8. Restart the set.
5.7.3 Flash New Scaler Software
When you need to flash new scaler software, follow the
instructions in ComPair. Make sure you put the set in one of the
Service Modes, SDM/SAM/CSM, before you start flashing.
This reduces the risk of the set hanging during the flashing
procedure.
5.7.4 Tuner and IF
No Picture in RF Mode, but there is a Noise Raster
1. Check whether picture is present in AV. If not, go to Video
processing troubleshooting section.
2. If present, check if the Option settings are correct.
3. Check if all the supply voltages are present (3.3/5/8/12/33
V).
4. Check if the I2C lines are working correctly (3.3 V).
5. Manually store a known channel and check if there is IF
output at Tuner pin 11.
6. Check the tuning DC voltage at pin 2 of the Tuner. The DC
voltage should vary according to the frequency/channel
being chosen.
7. If the tuning voltage is OK, check the tuner output, pin 11.
8. If it has no output, the Tuner may have a defect. Change
the Tuner.
Sound in Picture Problem for L' System (rolling horizontal
lines) - for EU sets only
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
Check whether a Service jumper (#4204 & 4205, 0805 size) is
present. If yes, remove it.
5.7.5 Video Processing
No Power
1. Check +12 V and 3V3 at position 1J02.
2. If no supply, first check the connector 1J02.
3. If the connector is correct, check the power supply board.
Power Supply is Correct, but no Green LED
1. Check if the connectors 1K00 are properly inserted.
2. If they are inserted correctly, check if the 3V3 is present.
No Picture Display (blank screen with correct sound
output)
1. Check whether the user menu is visible.
2. If the user menu is OK, activate teletext mode.
3. If teletext is OK, the problem is in the ADC (B18) &
Columbus 3D combfilter (B19), if present (depending on
model, see also paragraph “Teletext Path” in chapter 9).
4. If the user menu is not visible, check if the LCD panel
backlight is ON.
5. If the backlight is OFF, the problem is in the power supply
board or LCD panel. Also check pin 12 (LAMP_ON_OFF)
of 1J02. It should be HIGH during normal operation.
Note: For fault finding purposes, it is important to know the
following: in Pixel Plus and Digital Crystal Clear models, which
have an ADC (B18) and Columbus 3D combfilter (B19), the
digital input of the scaler is used for the digital video path
(Hercules output), whereas the analogue RGB input (analogue
input of the scaler) is only used for teletext. This means that no
mixed mode (video plus teletext simultaneously) is possible. If
there is sound and teletext, but no video and user menu (blank
screen), the digital path (Hercules - ADC - Columbus - Scaler)
is faulty. If there is sound but no teletext, the back-end part
(Scaler - LCD panel) is faulty.
No TV, but PC is Present
1. Check if Hsync_SDTV and Vsync_SDTV are present at pin
1 & pin13 of 7E03.
2. If they are present, check teletext output.
3. If there is no teletext output, the IC TDA150xx may be
defect.
5.7.6 Power Supply
There are two types of Power Supply Units used in the various
models of this chassis. Both Supply Units come with the PDP
Panel and are a “Black Box” for Service. The 42” models are
equipped with the SDI S42SD-YD09 v5 PDP Panel with Supply
Unit. The 50” models are equipped with the SDI S50HW-YD01
w1 PDP Panel with Supply Unit. For fault finding issues, refer
to the SDI PDP Repair Manual (order code 3122 785 16380).

Service Modes, Error Codes, and Fault Finding
EN 20 LC4.41A AA5.
Personal Notes:
E_06532_012.eps
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