Copyright 2005 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.
Power Supply PIP Panel(F1) 5355-56
Tuner IF and Demodulator PIP Panel(F2) 5455-56
Linearity & Panorama Panel(G) 5757
LTI/CTI Interface Panel(H) 5859
Front Interface Panel (FL13)(J) 6060
Front Interface Panel (PV2)(J) 6161
Front Interface and Keyboard Panel(J) 6263
8. Alignments65
9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets73
Abbreviation List82
IC Data Sheets84
10. Spare Parts List86
11. Revision List93
Published by WS 0572 TV ServicePrinted in the NetherlandsSubject to modificationEN 3122 785 16120
EN 2L04E AC1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Technical Specifications
1.2 Connections
1.3 Chassis Overview
Notes:
•Described specifications are valid for the whole product
range.
•Figures below can deviate slightly from the actual situation,
due to different set executions.
Bk - Subwoofer - S Var. level (optional) kq
Wh - Audio - L 0.5 V_rms / 1 kohm kq
Rd - Audio - R 0.5 V_rms / 1 kohm kq
Technical Specifications, Connections, and Chassis Overview
EN 3L04E AC1.
External 1: RGB/YUV - In and CVBS - In/Out
20
21
2
1
E_06532_001.eps
050404
Figure 1-3 SCART connector EXT2
1-Audio - R 0.5 V_rms / 1 kohm k
2-Audio - R 0.5 V_rms / 10 kohm j
3-Audio - L 0.5 V_rms / 1 kohm k
4-Audio - gnd Ground H
5-Blue - gnd Ground H
6-Audio - L 0.5 V_rms / 10 kohm j
7-Blue/U - in 0.7 V_pp / 75 ohm j
8-CVBS - status 0 - 2 V: INT
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3 j
9-Green - gnd Ground H
10 - n.c.
11 - Green/Y - in 0.7 V_pp / 75 ohm j
12 - n.c.
13 - Red - gnd Ground H
14 - FBL - gnd Ground H
15 - Red/V - in 0.7 V_pp / 75 ohm j
16 - Status/FBL 0 - 0.4 V: INT
1 - 3 V: EXT / 75 ohm j
17 - Video Ground H
18 - Video Ground H
19 - CVBS - out 1 V_pp / 75 ohm k
20 - CVBS - in 1 V_pp / 75 ohm j
21 - Shielding Ground H
External 2: CVBS- In and SVHS - In
20
21
2
E_06532_001.eps
050404
1
Figure 1-4 SCART connector EXT1
1-Audio - R 0.5 V_rms / 1 kohm k
2-Audio - R 0.5 V_rms / 10 kohm j
3-Audio - L 0.5 V_rms / 1 kohm k
4-Audio - gnd Ground H
5-Blue - gnd Ground H
6-Audio - L 0.5 V_rms / 10 kohm j
7-n.c.
8 - CVBS - status 0 - 2 V: INT
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3 j
9 - Green - gnd Ground H
10 - n.c.
11 - n.c.
12 - n.c.
13 - Red - gnd Ground H
14 - FBL - gnd Ground H
15 - YC-C - in 0.7 V_pp / 75 ohm j
16 - n.c.
17 - Video Ground H
18 - Video Ground H
19 - CVBS - out 1 V_pp / 75 ohm k
20 - Y/CVBS - in 1 V_pp / 75 ohm j
21 - Shielding Ground H
1.3Chassis Overview
B1
CRT
ECO
B2
SCAVEM
SIDE AV PANEL +
D
HEADPHONE
LTI/CTI INTERFACE
H
PANEL
F1
POWER SUPPLY
TUNER IF &
F2
DEMODULATION
LINEARITY &
G
PANORAMA PANEL
CRT PANEL
PIP PANEL
MONO
CARRIER
TOP CONTROL PANEL
FRONT INTERFACE PANEL
POWER SUPPLY
LINE & FRAME DEFLECTION
TUNER IF
HERCULES
FEATURES & CONNECTIVITIES
CLASS D AUDIO AMPLIFIER
AUDIO AMPLIFIER
REAR I/O SCART
FRONT CONTROL
DVD POWER SUPPLY
E_14480_138.eps
E
J
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
131205
Figure 1-5 PWB location
EN 4L04E AC2.
Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
Index of this chapter:
2.1 Safety Instructions
2.2 Maintenance Instructions
2.3 Warnings
2.4 Notes
2.1Safety Instructions
Safety regulations require that during a repair:
•Due to the chassis concept, a very large part of the circuitry
(incl. deflection) is 'hot'. Therefore, connect the set to the
mains via an isolation transformer.
•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.
•Wear safety goggles when you replace the CRT.
Safety regulations require that after a repair, you must return
the set in its original condition. Pay, in particular, attention to
the following points:
•General repair instruction: as a strict precaution, we advise
you to re-solder the solder connections through which the
horizontal deflection current is flowing. In particular this is
valid for the:
1. Pins of the line output transformer (LOT).
2. Fly-back capacitor(s).
3. S-correction capacitor(s).
4. Line output transistor.
5. Pins of the connector with wires to the deflection coil.
6. Other components through which the deflection current
flows.
•The maintenance inspection includes the following actions:
1. Perform the 'general repair instruction' noted above.
2. Clean the power supply and deflection circuitry on the
chassis.
3. Clean the picture tube panel and the neck of the picture
tube.
2.3Warnings
•In order to prevent damage to ICs and transistors, avoid all
high voltage flash-overs. In order to prevent damage to the
picture tube, use the method shown in Fig. 2-1, to
discharge the picture tube. Use a high voltage probe and a
multi-meter (position V_dc). Discharge until the meter
reading is 0 V (after approx. 30 s).
V
Figure 2-1 Discharge picture tube
E_06532_007.eps
250304
Note: This re-soldering is advised to prevent bad connections
due to metal fatigue in solder connections, and is therefore only
necessary for television sets more than two years old.
•Route the wire trees and EHT cable correctly and secure
them with the mounted cable clamps.
•Check the insulation of the mains cord for external
damage.
•Check the strain relief of the mains cord for proper function,
to prevent the cord from touching the CRT, hot
components, or heat sinks.
•Check the electrical DC resistance between the mains plug
and the secondary side (only for sets that have an isolated
power supply). Do this as follows:
1. Unplug the mains cord and connect a wire between the
two pins of the mains plug.
2. Turn on the main power switch (keep the mains cord
unplugged!).
3. Measure the resistance value between the pins of the
mains plug and the metal shielding of the tuner or the
aerial connection of the set. The reading should be
between 4.5 MΩ and 12 MΩ.
4. Switch the TV 'off' and remove the wire between the
two pins of the mains plug.
•Check the cabinet for defects, to prevent the possibility of
the customer touching any internal parts.
2.2Maintenance Instructions
We recommend a maintenance inspection carried out by
qualified service personnel. The interval depends on the usage
conditions:
•When a customer uses the set under normal
circumstances, for example in a living room, the
recommended interval is three to five years.
•When a customer uses the set in an environment with
higher dust, grease, or moisture levels, for example in a
kitchen, the recommended interval is one year.
•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 potential. Available ESD
protection equipment:
– Complete kit ESD3 (small tablemat, wristband,
connection box, extension cable and ground cable)
4822 310 10671.
– Wristband tester 4822 344 13999.
•Together with the deflection unit and any multi-pole unit,
flat square picture tubes form an integrated unit. The
deflection and the multi-pole units are set optimally at the
factory. We do not recommend adjusting this unit during
repair.
•Be careful during measurements in the high voltage
section and on the picture tube.
•Never replace modules or other components while the unit
is '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.
2.4Notes
2.4.1General
•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).
Safety Instructions, Warnings, and Notes
EN 5L04E AC2.
•Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in standby (F). These values are
indicated by means of the appropriate symbols.
•The picture tube panel has printed spark gaps. Each spark
gap is connected between an electrode of the picture tube
and the Aquadag coating.
•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
2.4.2 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= x 10
nano-farads (n= x 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 Electrical
Replacement Parts List. Therefore, always check this list
when there is any doubt.
2.4.3Rework 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.
-9
), or pico-farads (p= x 10
-12
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.
2.4.4Lead-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).
-6
),
).
E_06532_024.eps
230205
Figure 2-2 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.
P
b
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.
Device Replacement
The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be
Figure 2-3 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
clean the solder-joint from old tin and re-solder with new
tin.
EN 6L04E AC3.
Directions for Use
•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).
3.Directions for Use
•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 "Repair downloads".
For additional questions please contact your local repair help
desk.
2.4.5Practical Service Precautions
•It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.
•Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions - reactions that are best avoided. Before reaching
into a powered TV set, it is best to test the high voltage
insulation. It is easy to do, and is a good service precaution.
You can download this information from the following websites:
•Figures below can deviate slightly from the actual situation,
due to different set executions.
•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.
4.1Set Disassembly
Mechanical Instructions
EN 7L04E AC4.
1
Warning: Be sure to disconnect the AC power from the set
before opening it.
4.1.1 Rear Cover
1. Remove all fixation screws of the rear cover (do not forget
the screws that hold the rear connection panel).
2. Pull the rear cover backwards to remove it.
4.2Service Position
Before placing the Mono Carrier in its service position, remove
the Front Interface assy/panel (see paragraph “Front Interface
Assy/Panel removal”), the Side AV assy/panel (see paragraph
“Side AV Assy/Panel removal”) and the PIP assy/panel (if
exists) (see paragraph “PIP Assy/Panel removal”).
2
A
3
4
E_14480_048.eps
B
110204
Figure 4-1 Service position Mono Carrier
1. Disconnect the degaussing coil [1].
2. Release the two fixation clamps (at the mid left and mid
right side of the bracket), and remove the bracket from the
bottom tray, by pulling it backwards [2].
3. Turn the chassis tray 90 degrees counter clockwise.
4. Move the panel bracket somewhat to the left and flip it 90
degrees [3], with the components towards the CRT.
5. Turn the panel bracket with the rear I/O toward the CRT.
6. Place the hook of the tray in the fixation hole of the cabinet
bottom [4] and secure it.
EN 8L04E AC4.
Mechanical Instructions
4.3Assies/Panels Removal
4.3.1Front Interface Assy/Panel Removal
1
2
3
Figure 4-2 Front interface assy/panel removal
1. Remove the complete module from the bottom plate, by
pulling the two fixation clamps upward [1], while sliding the
module away from the CRT [2].
Note: these clamps are difficult to access.
2. Release the two fixation clamps [3] at the side of the
bracket, and lift the panel out of the bracket (it hinges at
one side).
1
3
E_14480_049.eps
110204
2. Push the assy a little bit upwards, and then pull it
backwards to release it from the front hinge.
3. Lift the panel from its bracket, while releasing the four
fixation clamps.
4.3.5Linearity Assy/Panel Removal
2
Figure 4-4 Linearity assy/panel removal
1. Release the two fixation clamps [1] to lift the panel out of
the bracket [2].
4.3.6PIP Assy/Panel Removal
1
1
E_14480_051.eps
270204
4.3.2Side AV Assy/Panel Removal
E_14480_050.eps
170204
Figure 4-3 Side AV assy/panel removal
1. Remove the two fixation screws, and remove the complete
Side AV assembly.
2. Release the two fixation clamps, and lift the panel out of the
bracket.
4.3.3LTI/CTI Interface Panel Removal
1. Release the two fixation clamps to lift the panel out of the
bracket.
4.4Set Re-assembly
To re-assemble the whole set, do all processes in reverse
order.
Note: before you mount the rear cover, perform the following
checks:
1. Check whether the AC power cord is mounted correctly in
its guiding brackets.
2. Check whether all cables are replaced in their original
position
Remove the LTI/CTI Interface panel from the Mono Carrier, by
disconnecting it from connector 1212.
4.3.4Top Control Assy/Panel Removal
Notes:
•PV02 styling: assy is mounted in the front cabinet;
•FL13B styling: assy is mounted in the rear cover.
1. Remove the two fixation screws.
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 9L04E AC5.
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 Protections
5.8 Fault Finding and Repair Tips
5.1Test Points
The chassis is equipped with test points printed on the circuit
board assemblies. These test points refer to the functional
blocks:
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) & 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 read-out for all these chassis.
Minimum requirements for ComPair: a Pentium processor, a
Windows OS, and a CD-ROM drive (see "ComPair" section).
Table 5-2 Software cluster overview
SW Clusters SW Version First MaskRemarks
L4LEF1L04EF11.0 TDA12020H1/N1B11Western Europe
L4LEF2L04EF21.0 TDA12020H1/N1B11Eastern Europe
L4LEF3L04EF31.0 TDA12020H1/N1B11Western Europe
L4LEF4L04EF41.0 TDA12020H1/N1B11Eastern Europe
L4LEF5L04EF51.0 TDA12020H1/N1B11Western Europe
L4LEF6L04EF61.0 TDA12020H1/N1B11Eastern Europe
L4LEF7L04EF71.0 TDA12020H1/N1B11ICON UI
A2
5.2.1Service Default Mode (SDM)
TDA12021H1/N1B11Radio 4:3 set only.
TDA12021H1/N1B11Radio 4:3 set only.
TDA12021H1/N1B11PIP
TDA12021H1/N1B11PIP
TDA12021H1/N1B11Radio & PIP.
TDA12021H1/N1B11Radio & PIP.
Purpose
A5
•To create a predefined setting for measurements to be
made.
•To override software protections.
•To start the blinking LED procedure.
Specifications
•Tuning frequency: 475.25 MHz.
•Colour system: PAL/SECAM.
•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: '0 6 2 5 9 6' directly followed by the 'MENU'
button (do not allow the display to time out between entries
while keying the sequence).
•Short jumper wires 9252 and 9275 on the family board (see
Fig. 8-1) and apply mains. Then press the power button
(remove the short after start-up).
Caution: Entering SDM by shorting wires 9252 and 9275
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 (with the ComPair ‘Tools’, it should be
possible to enter SDM via the ComPair interface).
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.
•When you press the MENU button on the remote control,
the set will switch on the normal user menu in the SDM
mode.
•On the TV, press and hold the 'VOLUME down' and press
the 'CHANNEL down' for a few seconds, to switch from
SDM to SAM and reverse.
How to Exit
Switch the set to STANDBY by pressing the POWER button on
the remote control transmitter or the television set.
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 SDM when mains is re-applied,
and the error buffer is not cleared.
•Press the following key sequence on the remote control
transmitter: '0 6 2 5 9 6' directly followed by the “On Screen
Display icon “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.
. White Tone
. Geometry
. Audio
. NVM Editor
. ComPair on
optional
*
Figure 5-2 SAM menu
Menu Explanation
1. LLLLL. This represents the run timer. The run timer counts
normal operation hours, but does not count standby hours
(maximum four digits displayed).
2. AAABCD-X.Y. This is the software identification of the
main microprocessor:
– A = the project name (L04).
– B = the region: E= Europe, A= Asia Pacific, U= NAFTA,
L= LATAM.
– C = the software diversity:
•Europe: T = 1 page TXT, F = Full TXT, V = Voice
control.
•LATAM and NAFTA: N = Stereo non-dBx, S =
Stereo dBx.
•Asian Pacific: F = Full 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).
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. AKB. Used to disable (Off) or enable (On) the 'black
current loop' (AKB = Auto Kine Bias).
9. Tuner. Used to align the tuner. See 'Tuner' in the
Alignments section for a detailed description.
10. 2 Tuner PIP. Used to align the tuner PIP (optional)
11. White Tone. Used to align the white tone. See 'White Tone'
in the Alignments section for a detailed description.
12. Geometry. Used to align the geometry settings of the
television. See 'Geometry' in the Alignments section for a
detailed description.
13. Audio. No audio alignment is necessary for this television
set.
E_14480_140.eps
260504
Service Modes, Error Codes, and Fault Finding
14. NVM Editor. Used to change the NVM data in the
television set.
15. ComPair Mode. Used to switch on the television to ISP
mode (for uploading software)
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 an SDAM
submenu, you will return to the previous menu.
1 00028 L04EF30.10 CSM
2 CODES 0 0 0 0 0
3 OP 000 057 140 032 120 128 000
4 nnXXnnnn/nnX
5 P3C-1
6 NOT TUNED
7 PAL
8 STEREO
9 CO 50 CL 50 BR 50 HU 0
0 AVL Off BS 50
E_14480_141.eps
Figure 5-3 CSM menu
EN 11L04E AC5.
250504
How to Store SAM Settings
To store settings changed in SAM leave the top level SAM
menu by using the POWER button on the remote control
transmitter or the television set.
How to Exit
Switch the set to STANDBY by pressing the POWER button on
the remote control transmitter or the television set.
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 operation settings. The call centre can
instruct the customer to enter CSM by telephone and read off
the information displayed. 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: '1 2 3 6 5 4' (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:
Menu Explanation
1. Indication of the service mode (CSM = Customer Service
Mode).
2. Reserved item.
3. Software identification of the main microprocessor (see
'Service Default Alignment Mode' for an explanation)
4. Reserved item for P3C call centres (AKBS stands for
Advanced Knowledge Base System).
5. Indicates the type of TV system or whether or not the
television is receiving an 'IDENT' signal on the selected
source. If no 'IDENT' signal is detected, the display will
read 'NOT TUNED'
6. Displays the last five errors detected in the error code
buffer.
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.
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 (if necessary).
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.
EN 12L04E AC5.
Service Modes, Error Codes, and Fault Finding
8. Press the MENU LEFT/RIGHT keys to increase or
decrease the PICTURE value.
9. Press the MENU button on the remote control transmitter
twice to exit the user menu.
10. The new PERSONAL preference values are automatically
stored.
White Line around Picture Elements and Text
If:
The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu (if necessary).
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
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).
Check CSM line 5. 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 6, the Error Buffer line,
will contain error number 10). Check the tuner and replace/
repair the tuner if necessary.
Black and White Picture
If:
•The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu (if necessary).
4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.
5. Use the MENU UP/DOWN keys to select COLOR.
6. Press the MENU RIGHT key to increase the COLOR 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 (if necessary).
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
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.
5.4.1Introduction
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
•ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.
•ComPair allows very detailed diagnostics (on I2C level)
and is therefore capable of accurately indicating problem
areas. You do not have to know anything about I2C
commands yourself because ComPair takes care of this.
•ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the SearchMan electronic manual of the defective chassis,
schematics and PWBs are only a mouse click away.
5.4.2Specifications
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 RS232 cable.
In this chassis, the ComPair interface box and the TV
communicate via a bi-directional service cable via the service
connector.
The ComPair fault finding program is able to determine the
problem of the defective television. ComPair can gather
diagnostic information in two ways:
•Automatic (by communication with the television):
ComPair can automatically read out the contents of the
entire error buffer. Diagnosis is done on I2C level. ComPair
can access the I2C bus of the television. ComPair can
send and receive I2C commands to the micro controller of
the television. In this way, it is possible for ComPair to
communicate (read and write) to devices on the I2C
busses of the TV-set.
Service Modes, Error Codes, and Fault Finding
EN 13L04E AC5.
•Manually (by asking questions to you): Automatic
diagnosis is only possible if the micro controller of the
television is working correctly and only to a certain extend.
When this is not the case, ComPair will guide you through
the 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 waveform you see on the
oscilloscope). You can answer by clicking on a link (e.g.
text or a waveform picture) that will bring you to the next
step in the 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.
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.
5.4.3How to Connect ComPair
1. First, install the ComPair Browser software (see the Quick
Reference Card for installation instructions).
2. Connect the RS232 interface cable between a free serial
(COM) port of your PC and the PC connector (marked with
'PC') of the ComPair interface.
3. Connect the mains adapter to the supply connector
(marked with 'POWER 9V DC') of the ComPair interface.
4. Switch the ComPair interface “off”.
5. Switch the television set “off” with the mains switch.
6. Connect the ComPair interface cable between the
connector on the rear side of the ComPair interface
(marked with 'I2C') and the ComPair (or Service) connector
at the rear side of the TV (for its location see figure 8-1 in
chapter “Alignments”).
7. Plug the mains adapter in a mains outlet, and switch the
interface “on”. The green and red LEDs light up together.
The red LED extinguishes after approx. 1 second while the
green LED remains lit.
8. Start the ComPair program and read the 'Introduction'
chapter.
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.
5.5.1How to Read the Error Buffer
You can read the error buffer in 3 ways:
•On screen via the SDAM (if you have a picture).
Examples:
– ERROR: 0 0 0 0 0 : No errors detected
– ERROR: 6 0 0 0 0 : Error code 6 is the last and only
detected error
– ERROR: 9 6 0 0 0 : Error code 6 was detected first and
error code 9 is the last detected (newest) error
•Via the blinking LED procedure (when you have no
picture). See 'The Blinking LED Procedure'.
•Via ComPair.
5.5.2How to Clear the Error Buffer
The error code buffer is cleared in the following cases:
•By using the CLEAR command in the SDAM menu:
– To enter SAM, press the following key sequence on the
remote control transmitter: '062596' directly followed
by the “OSD" icon 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.
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).
924C16I2C error while communicating with the EEPROM7601, 3604, 3605A5
10Tuner= I2C error while communicating with the PLL tuner1000, 5001A3
11TDA6107/ABlack current loop instability protection7330, 3351, CRTB1
12SDA9488XI2C error while communicating with the PIP processor7242 (PIP Module)F1
13Not applicable ---
14DVD LoaderI2C error while communicating with the DVD Interface module DVD Interface moduleDVD Loader
15TDA9178T/N1 I2C error while communicating with LTI module7610H
16TDA9887I2C error while communicating with PIP_Demodulator7201F2
17Not applicable ---
18Not applicable ---
19TDA1200I2C error while communicating with SSD stereo sound decoder 7200A4
20TDA1200I2C error while communicating with video cosmic in Hercules IC 7200A4
I2C error while communicating with 2nd tuner1000, 5010 (PIP Module)F2
Service Modes, Error Codes, and Fault Finding
6412.
A2
Note: Errors 7, 8, 13, 17, 18 are not applicable.
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 LED will blink the contents of the
error-buffer:
•When all the error-codes are displayed, the sequence
finishes with an 'ON' LED blink of 1.5 seconds,
•The sequence starts again.
Example of error buffer: 12 9 6 0 0
After entering SDM, the following occurs:
•1 long 'on' 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 'on' blink of 1.5 seconds to finish the sequence,
•The sequence starts again at 12 short blinks.
5.7Protections
If a fault situation is detected, an error code will be generated;
and, if necessary, the television set will go into protection
mode. Blinking of the red LED at a frequency of 3 Hz indicates
the protection mode. In some error cases, the microprocessor
does not put the set in protection mode. The error codes of the
error buffer and the blinking LED procedure can be read via the
Service Default Menu (SDM), or via ComPair.
To get a quick diagnosis the chassis has three service modes
implemented:
•The Customer Service Mode (CSM).
•The Service Default Mode (SDM).
•The Service Alignment Mode (SAM).
For a detailed description, see the "Customer Service Mode,
Service Default mode" and "Service Alignment Mode" sections.
5.8Fault 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.
5.8.1NVM 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. In the next table, the default NVM values are given.
Service Modes, Error Codes, and Fault Finding
Table 5-4 NVM default values5.8.2 Power Supply
EN 15L04E AC5.
Address
(dec)
Value
(hex)
EW (EW width)1925
PW (EW parabola width)200A
HS (Horizontal shift)211A
HP (Horizontal parallelogram)221F
HB (Horizontal Bow)231F
UCP (EW upper corner parabola)241E
LCP (EW lower corner parabola)2528
TC (EW trapezium)261A
VS (Vertical slope)2725
VA (Vertical amplitude)281E
SC (S-Correction)291C
VSH (Vertical Shift)301A
VX (Vertical Zoom)3119
VSL (Vertical scroll)3220
VL (Vertical linearity)3320
AGC (AGC Takeover)361E
OIF (IF-PLL Offset)3720
AGC10 (AGC 10)381
H60 (60 Hz Horizontal Shift)399
PF_SC_PWL (Peaking Frequency, Soft
400A
Clipper, Peak White Limit)
COR (Phase 1 time constant, Video
410F
Dependant Coring, Ratio & White stretch)
60 Hz Vertical amplitude4240
YD & CL432
RGB amplitude for full teletext mode460C
NVM_TABLE_VERSION6026
OPTION_TABLE_VERSION6111
CVI_BLOR621E
CVI_BLOG631C
TXT Brightness640F
V60 offset (60Hz Vertical Amplitude)66FE
FOAB, CHSE1393
SPR, WS1400
VMA, SVM14131
NVM_SOC_SMD14233
CCC_Preset_Gain_Red1431F
CCC_Preset_Gain_Green1441F
CCC_Preset_Gain_Blue1451F
NVM_FMWS1492
NVM_ASD_SC1_THR15010
NVM_CRYSTAL_ALIGN2084F
Last Brightness (VID PP others)26434
Last Color (VID PP others)2652C
Last Contrast (VID PP others)2664B
Last Sharpness (VID PP others)26737
Last Hue (VID PP others)26832
Last Colour Temperature (VID PP others) 2690D
White-D Cool Red294FD
White-D Cool Blue2968
White-D Normal Red29722
White-D Normal Green29820
White-D Normal Blue2991B
White-D Warm Red3002
White-D Warm Blue302FA
Last Volume34319
Last Balance34432
Last Treble (AUD PP others)34532
Last Bass (AUD PP others)34632
Set Not Working
Check Power
Supply Mains
Switch
Not Ok
Check fusible
resistor 3510 &
circuit before it
Check IC7511 &
IC7531
Ok
Set able to
start-up
Ye s
End
No
Check other
fusible resistor
and capacitor in
E_14480_057.eps
Bridge Rectifier
circuit 6500
Ok
Check DC
voltage at
2505/2507
Ok
Check
fusible
resistor 3532
Not Ok
Check
7512
Figure 5-5 Fault finding tree “Set not working”
Set Does Not Start Up
Set Unable
to Start
Software
loaded?
Yes
Check
voltage
across 2552
No
Is Vbatt
approximately
140V
Yes
Check
voltage 2562
&2563
16V
Yes
Check 3V
across 2535
Yes
Check 6V
across 2535
Fuse Blown?
Load
Software
Yes
No
Yes
Check Power
Supply circuit
No
Set able to
Start
Yes
End
Change
Fuse
No
Check Line
Transistor 7405
E_14480_058.eps
Figure 5-6 Fault finding tree “Set does not start up”
the circuit
190204
170204
EN 16L04E AC5.
Service Modes, Error Codes, and Fault Finding
5.8.3Deflection
One Thin Vertical Line
Quick check:
•Set in protection mode.
•LED blinking with error “3”.
One Thin Vertical Line
LED Blinking
Check all
connection and
peripheral at
Deflection Circuit in
place
Check
Line Transistor
7405
Is VBE between
200mV to 30mV & V
approximately 500mV
Blank Screen
Blank Screen
Check Vg2
(fine tune)
Not Ok
Check Beam Current Limit
(voltage is 1.8V-2V when
brightness and contrast is
set to the maximum
Ok
Check heater voltage
(measure pin 9&10
at the CRT socket)
Check video supply
(2457) is approximately
180V
Yes
Check Horizontal
Deflection
Circuitry
CB
Ok
Not Ok
Ok
Picture
appears?
Picture not appearing
Check deflection
circuit
Picture not appearing
Picture
appears?
Ok
Not Ok
Replace transistor
E_14480_059.eps
170204
Figure 5-7 Fault finding tree “One thin vertical line”
One Thin Horizontal Line
Quick check:
•Set in protection mode.
•LED blinking with error “2”.
One Horizontal
Thin Line
LED Blinking
Check all connection
and peripheral at
Deflection Circuit
in place
Check transistor
(7451, 7523, 7543) at
Vertical Deflection Circuitry
Check Vertical
Deflection Circuit
Replace transistor
E_14480_060.eps
170204
Ok
Figure 5-9 Fault finding tree “Blank screen”
5.8.4Source Selection
Set is not able to go into AV or any missing AV is
encountered
E.g. AV1 is available but not able to enter to AV1: Check if the
option setting is correct.
Set is able to go to AV, but no audio is heard.
1. Check that continuity of signal is there from the SCART/
Cinch input to the input of the Hercules.
2. If continuity is there and still no audio, check that option
settings are correct.
3. If logic setting is correct and still no audio, proceed to Audio
Decoder/Processor troubleshooting section.
Set is able to go into AV but no video is available:
1. Check continuity from AV input to HERCULES depending
on the input.
2. If continuity is available and yet no video, proceed to Video
Processor troubleshooting section.
5.8.5Tuner and IF
No Picture
1. Check that the Option settings are correct.
2. If correct, check that supply voltages are there.
3. If supply voltages are present, check whether picture is
present in AV.
4. If picture is present in AV, check with the scope the Tuner
IF output signal by manual storage to a known channel.
End
E_14480_061.eps
170204
Figure 5-8 Fault finding tree “One thin horizontal line”
Service Modes, Error Codes, and Fault Finding
EN 17L04E AC5.
5. If IF output is present, Tuner is working fine. If no IF output,
I2C data lines may be open, check continuity of I2C lines.
If I2C lines are ok, Tuner may be defect, replaced Tuner.
6. If Tuner IF is present and yet still no picture in RF mode, go
to Video Processing troubleshooting section.
No Picture, No Sound
Yes
Check tuning
supply voltage,
pin 9 of tuner
>30V & <35V
Check supply
voltage, pin 7 of
tuner
5V
Yes
Check Tuner
pin 4 & 5
I2C Bus
Check
VT Supply
No
Section
Check Power
No
Supply
No Picture,
No Sound,
Raster Ok
Check AGC
Voltage, pin 1
of tuner
AGC voltage
changes with
different signal
strength
No
Check AGC
circuit section
Picture Ok, No Sound
Picture Ok,
No Sound
Check IF output of
tuner, pin 11
CVBS
present?
Ye s
Check SAW filter output
(pin 4&5)
EU/AP/CH (QSS)- 1001
NA/LA/AP INT - 1002
Output Ok?
Ye s
No
No
Refer to fig.
"Power Supply:
Set not working"
Replace SAW
filter
Ok
Yes
Replace Tuner
No
Check other
functional area
E_14480_062.eps
Figure 5-10 Fault finding tree “No picture, no sound”
170204
Check other
functional area
E_14480_063.eps
170204
Figure 5-11 Fault finding tree “Picture ok, no sound”
Unable To Perform Tuning
Unable to
perform tuning
Enter SDM
check optionbyte 1
Correct
Check if tuner
Supply Voltage
pin 7
Incorrect
5V
Yes
Check Tuner
Supply Voltage
Check I2C at pin
4 & 5 and tuner
Ok
Check other
functional area
Enter SDM and change
to the appropriate byte
Check Power
No
Supply
No
33V
Yes
Not Ok
Check I2C
circuit
Not Ok
I2C
Not Ok
E_14480_064.eps
Replace
Tuner
Not Ok
Tuner
170204
Figure 5-12 Fault finding tree “Unable to perform tuning”
5.8.6Controller
Below are some guidelines for troubleshooting of the Micro
Controller function. Normally Micro Controller should be
checked when there is a problem of start-up.
1. Check that both +3.3 V_dc and +1.8 V_dc are present.
2. Check that crystal oscillator is working.
EN 18L04E AC5.
Service Modes, Error Codes, and Fault Finding
3. Check that Power Good signal is at “high” logic, normal
operation.
4. Check that HERCULES is not in standby mode. Pin 15 of
HERCULES should be 0 V_dc.
5. Make sure H-drive pulse is there. This can be checked at
resistor R3239. If H-drive does not exist, remove resistor
R3239 to check if there is loading.
Note: When the set shuts down after a few second after power
“on”, the main cause is that Vg2 not aligned properly, try
adjusting Vg2 during the few seconds of power “on”.
5.8.7Video Processing
No Picture
When “no picture in RF”, first check if the microprocessor is
functioning ok in section “Controller”. If that is ok, follow the
next steps.
When “no picture in AV”, first check if the video source
selection is functioning ok in section “Source Selection”. If that
is ok, follow the next steps.
1. Check that normal operating conditions are met.
2. Check that there is video signal at pin 81. If no video,
demodulator part of the HERCULES is faulty, replace with
new HERCULES.
3. If video signal is available at pin 81, check pin 56, 57, and
58 for the RGB signal.
4. If signal is not available, try checking the BRIGHTNESS
and/or CONTRAST control, and make sure it is not at zero.
5. If still with the correct settings and no video is available,
proceed to the CRT/RGB amplifier diagram.
For sets with TDA9178, follow steps below:
1. Put Option Byte 2 bit 4 to “0”; if video signal is not available,
then check fault finding section “Controller”, Section
“Source Selection”, and steps above.
2. If video is available but not correct, put Option Byte 2 bit 4
to “1”, then check if LTI panel is present. If not, put LTI
panel in the main chassis (connector 1221).
3. If LTI panel is in main chassis, check cable between LTI
panel and main chassis (position is 1206). If it is
connected, then the LTI panel is faulty, replace it.
For sets with Scavem, and Scavem does not work, follow steps
below:
1. Check Scavem coil connector (position is 1361) if
connected; if not, connect it.
2. If connected, check NVM “bit storage” byte 1 bit 7; if it is not
“1”, set it to “1”.
3. If it is “1”, then check the data of the NVM addresses as in
the next table. If the data is not correct, then set these
addresses to diagram values.
4. If it still not works, track Scavem output from pin 64 of
HERCULES to CRT panel.
Table 5-5 NVM default values for Scavem
5.8.8Audio Processing
No Sound
Picture Ok,
No Sound
Tuner IF OkCheck Tuner/IFNot Ok
Ok
Check AUDOUTLSL &
AUDOUTLSR pin at
UOCIII
Ok
Check Audio
Amplifier
Not Ok
Not Ok
Check UOCIII IC
Check Audio
Power Supply
Ok
Check Audio
Amplifier Circuit
and loud speaker
Ok
Check NVM
Not Ok
Figure 5-13 Fault finding tree “No sound”
No RF audio for QSS/Inter-Carrier stereo sets.
1. Check pin 99 and 100 for SIF signal (for QSS) or pin 104
and 105 for video with SIF (for Inter-Carrier)
2. If signal is not present, check for the QSS/FMI bit settings.
Check also the NVM data.
3. If signals are present and still no audio, check the audio
supply voltage +8V are present.
4. If still no audio signal at Hercules output, Hercules is faulty.
No AV audio.
1. Check troubleshooting methods in section “Source
Selection”.
2. Check the output of the Hercules to see if there is signal
available. If no, check the normal operating condition and
also the NVM data.
3. If still no audio signal at Hercules output, Hercules is faulty.
Note: If there is audio signal at Hercules output and no audio
at loudspeaker, proceed to Audio Amplifier troubleshooting
methods.
Check Power
Supply
Replace Audio
Amplifier
E_14480_065.eps
201005
Description
Address
(dec)
Address
(hex)
Value
(hex)
SPR, WS1408C00
VMA, SVM1418D31
NVM_SOC_SMD 1428E33
5.8.9Audio Amplifier
No RF as well as AV audio at the loudspeaker:
1. Check that the normal operation condition of the amplifier
is met.
2. If normal operation conditions are met, check the continuity
from Hercules output to input of the amplifier.
3. If continuity is there and still no audio, check speaker wire
connections. If still no audio, amplifier IC might be faulty.
Block Diagrams, Test Point Overviews, and Waveforms
6.Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram
TOP CONTROL PANEL
E
1010
3P
(component view)
CRT PANEL
B
RIGHT
SPEAKER
RED
BLACK
7P
5P
1351
1332
1352
CRT
SOCKET
19L04E AC6.
1361
3P
1381
3P
AQUADAG
DEGAUSSING COIL
CRT
16:9
ROTATION
BLUE
RED
CRT PANEL
FRAME
COIL
B
YELLOW
ORANGE
SCAVEM
COIL
EHT
CRT
BLACK
RED
LEFT
SPEAKER
CVBS (YELLOW)
LEFT (WHITE)
RIGHT (RED)
HEADPHONE
SIDE
D
A/V PANEL +
HEADPHONE
PIP
F
91
9P
1212
NC
1220
4P
1219
NC
4P
4P
1214
1206
1279
3P
SUB
WOOFER
(OPTIONAL)
5P
to
TUNER
1252
1254
1278
FRONT INTERFACE
1693
6P
7P
1504
2P
5P
4P
MONO
A
3P
LTI/
H
CTI
1401
12P
5P
1451
2P
9P91
CARRIER
LOT
(track view)
LTI/CTI
H
INTERFACE
1216
1215
1206
7P4P
4P5P 15
1214
1212
12P
5P
1280
1207
TUNER
1682
3P
1206
7P
7P
1221
1204
7P
1212
1219
1505
2P
1404
2P
5401
J
1693
6P
1212
2P
LINEARITY&
G
PANORAMA
1462
3P
1464
2P
1461
2P
MAINS
SWITCH
1211
MAINS
CORD
2P
1005
3P
COMPAIR
CONNECTOR
E_14480_080.eps
170504
Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Supply and Deflection
SUPPLY AND DEFLECTION
SUPPLY
FRONT INTERFACE
J
1211
1
2
A1
1505
1505
F508 268V / div DC
1231
MAINS
SWITCH
(not USA)
POWER SUPPLY
Degaussing
1506
OR
MAINS
SWITCH
(not USA)
I511
6512
3519
7532
F511 15V5 / div DC
F531 2V7 / div DC
F537 0V (N.A.)
F552 130V / div DC
F561 15V9 / div DC
Coil
2511
6533
3530
I531
1212
1504
1500
T4E
7511
TEA1506T
2
Vcc
CONTROL
6
CTRL
STANDBY
SUPPLY
7531
TEA1620
3
Vcc
CONTROL
6
REG
11
AUX
F564 9V4 / div DC
F573 0V (N.A.)
1
2
5500 :
5502
DRAIN
IC
IC
SOURCE
DRIVER
SENSE
DEMAG
DRAIN
3507
t
6500
AC
I513
3513
14
3514
11
I519
3532
9
3517
7
3518
I533
14
12
6532
3534
3531
I513I516I519I533
2534
3538
F508
2505
DC
MAIN
SUPPLY
3516
I516
D
S
7514
7512
G
6511
20L04E AC6.
LINEARITY & PANORAMA
G
ONLY FOR:
28"WSRF LA/NA
32" WSRF LA/NA
28" WS-SF LA
1464
4
1
1462
TO 1221
A5
CONNECTIONS
1
2
3
DEFLECTION
HERCULES
Vbatt
-Vaudio
+Vaudio
+6VA
A4
A4
+3V
+6VA
+6VA
+6V
Vaux
2x
A4
INTF_Y GREEN_IN
A5
EHTinfo
A2
F401 130V / div DC
F402 32V8 / div DC
56
97
7200-H
(SYNC)
VIDEO
IDENT
MAIN
SYNC
SEPARATOR
EHTo
2240
PHI 1
DETECTOR
VERTICAL
SEPARATOR
HORIZONTAL
GENERATOR
PROTECTION
SYNC
F412F414
2V / div DC
20µs / div
7541
1503
43
2
5520
9
8
4
5
3
2
4
3
35321532
1A
5531
4
5
1
2
(optional)
55515552
17
18
5562
13
14
5561
10
11
1
7515
TCET1103
2
6564
6535
10
9
6536
8
6
ENERGIZING
CIRCUIT
1
6551
6563
6562
3571
6573
F552
1543
7571
REFERENCE
7573
6565 6566
2564
2535
2536
V_DG
6571
CIRCUIT
+3V3
STANDBY
CIRCUIT
3565
F536
6537
G
7561
6676
DS
7536
F563
F561
3575
3576
Stdby_Con
I573
POWER-DOWN
F564
5537
F537
7535
I548
For IDTV only
F455F458F459
3232
112
OSC.
SAND-
CASTLE
X-RAY
VERTICAL
DIVIDER
A2A2
EHTinfo
113116
DETECTOR
VERTICAL
200V / div DC
20µs / div
VERTICAL
GUARD
DETECTOR
PHI 2
SAW-
THOOTH
Vguard
R.G.B.
BLANKING
HORIZONTAL
OUTPUT
E/W
+
GEOMETRY
VERTICAL
OUTPUT
+
GEOMETRY
F418
F452 -13V4 / div DC
F453 190V8 / div DC
5V / div DC
20µs / div
F460F461
TO RGB
PROC.
7207
3291
HDRIVE
HD
SANDCASTLE
HD_PIP
EW_DRIVE
VDRA
VDRB
62
63
SEE BLOCK DIAGRAM VIDEO
108
106
107
I416I417I468I423I433I462
A5
A5
LINE + FRAME DEFLECTION
A2
LINE
F412
HD
6486
-9V
5402
7404
E/W
+8V
+8V
34203440
7410
I417
7484
3498
FRAME
+9V
F460
F461
3462
74557456
+6VA
BU4508DX
F418
7406
3463
7408
7405
3497
F414
LINE
OUTPUT
CIRCUIT
+
E/W
CORR.
7452
3465
-12V
7411
7454
1404
1
2
Vbatt
OR
7451
7453
F402
5445
3
1
HOR.
DEFL.
COIL
3466
3461
EHT
FOCUS
10
6
5
7
8
9
SEE BLOCK DIAGRAM VIDEO
VD
3474
Vguard
F458
1491
1
2
VER.
DEFL.
COIL
F459
FRAME_FB
3471
VG2
1454
+9V
I2SD/1
3442
6481
CRT
Vbatt
A5
A4
7460
ACTIVATING
I433
TO
B1
+Vbatt
3481
3410
6483 6484
6453
6456
3457
3455
CIRCUIT
7462
2466
LINEARITY AND
PANORAMA
CORRECTION
2474
2475
7463
6401
7401 : 7403
7480 : 7483
3411
3451
2403
6452
3458
3484
3485
1452
2456
6459
Vbatt
2464
2467
1463
EHTb
+
EHTinfo
+
BCL
PROC.
VIDEO/SUPPLY
3401
F401
POWER-DOWN
FRAME_FB
EHTb
EHTinfo
BCL
F452
F453
VIDEO/SUPPLY
F455
FILAMENT
6454
6455
EHTb
FILAMENT
VT_SUPPLY
1461
4
1
HOR.
DEFL.
COIL
A1
A4
A4
-12V
+9V
1401
TO 1351
5
B1
4
CRT
or
3
TO 1401
B3
2
CRT
INTERFACE
1
PAN E L
A4
100V / div DC
5µs / div
100V / div DC
5µs / div
2V / div DC
5µs / div
100V / div DC
5µs / div
HOT GROUND COLD GROUND
5V / div DC
20µs / div
20 V / div DC
5ms / div
1V / div DC
5ms / div
500mV / div DC
5ms / div
500mV / div DC
5ms / div
20V / div DC
20µs / div
500mV / div DC
20µs / div
10V / div DC
20µs / div
10V / div DC
20µs / div
10V / div DC
5ms / div
5V / div DC
5ms / div
E_14480_081.eps
140904
Block Diagrams, Test Point Overviews, and Waveforms