Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.
1 - Audio L (0.5 Vrms / 10 kohm) jq
2 - Audio R (0.5 Vrms / 10 kohm) jq
TOP CONTROL PANEL
SMALL SIGNAL BOARD
P
P
B
AUTO-SCAVEM
SC
PIP/DOUBLE
C
WINDOW PANEL
(optional)
Figure 1-3 PWB locations
MAINS SWITCH PANEL
LARGE SIGNAL PANEL
DC-SHIFT (optional)
DAF PANEL
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A
G
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EN 4EM5.3A P/M AA2.
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
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
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 (> 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.
•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.
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 Mohm and 12 Mohm.
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.
•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.
•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 flashovers. 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
•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 earth 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.
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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.
Safety Instructions, Warnings, and Notes
EN 5EM5.3A P/M AA2.
2.4Notes
2.4.1 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 “Service Modes, ....”) with a colour bar signal and
stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise)
and picture carrier at 475.25 MHz for PAL, or 61.25 MHz
for NTSC (channel 3).
•Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in standby (F). These values are
indicated by means of the appropriate symbols.
•The 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.
Area Preparation
When the component has been removed, the vacant IC area
must be cleaned before replacing the (LF)BGA.
Removing an IC often leaves varying amounts of solder on the
mounting lands. This excessive solder can be removed with
either a solder sucker or solder wick. The remaining flux can be
removed with a brush and cleaning agent.
After the board is properly cleaned and inspected, apply flux on
the solder lands and on the connection balls of the (LF)BGA.
Note: Do not apply solder paste, as this has shown to result in
problems during re-soldering.
Device Replacement
The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be
aligned under a microscope or magnifying glass. If this is not
possible, try to align the (LF)BGA with any board markers.
To reflow the solder, apply a temperature profile according to
the IC data sheet. So as not to damage neighbouring
components, it may be necessary to reduce some
temperatures and times.
More Information
For more information on how to handle BGA devices, visit this
URL: www.atyourservice.ce.philips.com (needs subscription,
not available for all regions). After login, select “Magazine”,
then go to “Workshop Information”. Here you will find
Information on how to deal with BGA-ICs.
2.4.2 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 expressed in micro-farads (µ= x
10^-6), nano-farads (n= x 10^-9), or pico-farads (p= x 10^-
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 Electrical
Replacement Parts List. Therefore, always check this list
when there is any doubt.
2.4.3 Rework on BGA (Ball Grid Array) ICs
General
Although (LF)BGA assembly yields are very high, there may
still be a requirement for component rework. By rework, we
mean the process of removing the component from the PWB
and replacing it with a new component. If an (LF)BGA is
removed from a PWB, the solder balls of the component are
deformed drastically so the removed (LF)BGA has to be
discarded.
Device Removal
As is the case with any component that, it is essential when
removing an (LF)BGA, the board, tracks, solder lands, or
surrounding components are not damaged. To remove an
(LF)BGA, the board must be uniformly heated to a temperature
close to the reflow soldering temperature. A uniform
temperature reduces the chance of warping the PWB.
To do this, we recommend that the board is heated until it is
certain that all the joints are molten. Then carefully pull the
component off the board with a vacuum nozzle. For the
appropriate temperature profiles, see the IC data sheet.
2.4.4Lead Free Solder
Philips CE is going to produce lead-free sets (PBF) from
1.1.2005 onwards.
P
b
Figure 2-2 Lead-free logo
This sign normally has a diameter of 6 mm, but if there is less
space on a board also 3 mm is possible.
Regardless of this logo (is not always present), one must treat
all sets from this date onwards according to the next rules.
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
•Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.
•Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able
– To reach at least a solder-tip temperature of 400°C.
– To stabilise the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
•Adjust your solder tool so that a temperature around 360°C
- 380°C is reached and stabilised at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will rise drastically and flux-fluid will be destroyed. To
avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
•Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to
avoid mixed regimes. If not to avoid, clean carefully the
solder-joint from old tin and re-solder with new tin.
EN 6EM5.3A P/M AA3.
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
short before it is used (soldered). Otherwise the body of the
IC gets "wet" inside and during the heating time the
structure of the IC will be destroyed due to high (steam)pressure inside the body. If the packaging was opened
before usage, the IC has to be heated up for some hours
(around 90°C) for drying (think of ESD-protection !).
Do not re-use BGAs at all!
•For sets produced before 1.1.2005, containing leaded
soldering tin and components, all needed spare parts will
be available till the end of the service period. For the repair
of such sets nothing changes.
In case of doubt wether the board is lead-free or not (or with
mixed technologies), you can use the following method:
•Always use the highest temperature to solder, when using
SAC305 (see also instructions below).
3.Directions for Use
You can download this information from the following website:
http://www.philips.com/support
•De-solder thoroughly (clean solder joints to avoid mix of
two alloys).
Caution: For BGA-ICs, you must use the correct temperatureprofile, which is coupled to the 12NC. For an overview of these
profiles, visit the website www.atyourservice.ce.philips.com
(needs subscription, but is not available for all regions)
You will find this and more technical information within the
"Magazine", chapter "Workshop information".
For additional questions please contact your local repairhelpdesk.
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 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.
4.Mechanical Instructions
Mechanical Instructions
EN 7EM5.3A P/M AA4.
Index of this chapter:
4.1 Service Connector (for ComPair)
4.2 Set Disassembly
4.3 Service Positions
4.4 Assembly / Board Removal
4.5 Set Reassembly
Note: Figures below can deviate slightly from the actual
product, due to different set designs.
4.1Service Connector (for ComPair)
To perform service diagnostics with ComPair, it is not
necessary to disassemble the set. You simply have to connect
the ComPair interface box, with the appropriate cable, to the
service connector (on the rear of the set, see figure below), and
start the ComPair program (see chapter 5).
4.2Set Disassembly
Follow the disassembly instructions below.
4.2.1 Back Cover Removal
3
1. Disconnect the loudspeaker cable at the top of the
subwoofer box.
2. The subwoofer is fixed in the bottom plate with two “rubber
feet”.
3. Pull the subwoofer box upwards, and remove it.
4.3Service Positions
This chassis has several predefined service positions, for
better accessibility. They are explained below in more detail.
4.3.1Control-Jack-High-Definition-Interface Panel Solder Side
2
1
4
4
3
11
1
2
3
Service connector
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040602
Figure 4-1 Rear Cover Removal
Warning: Disconnect the AC power cord before you remove
the back cover.
First, remove the top cover (plate with “saucer”):
1. Remove the three screws [1] that hold the cover plate.
2. Pull the cover (horizontally) backward.
To access the electronics of the set, you must remove the back
cover:
1. Remove the screws [2] of the rear jack panel cover plate.
2. Remove the remaining screws [3] at the two sides, and the
top of the back cover.
3. Remove the back cover. Make sure that wires and cables
are not damaged while removing the cover.
Figure 4-2 Service position 1
To remove or access the “Control-Jack-High-DefinitionInterface” panel, do the following:
1. Remove the screw [1].
2. To release the peg, push it toward the CRT [2].
3. At the same time, pull the complete module away from the
LSP [3]. It hinges in the LSP bracket.
4. To remove the panel, remove the four panel screws [4].
4.3.2LSP Component Side
SSB top-bracket
SSB
AUTO-SCAVEM
bracket
CONNECTOR SUPPORT
bracket
Bottom tray
2
LOT - bracket
LSP
1
1
2
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4.2.2 Subwoofer Removal
Caution: Do not disconnect the loudspeaker cable from the
subwoofer box while the set is operating, because the class-D
amplifier cannot handle a change in load during operation.
There is no problem when the subwoofer is disconnected
before operation, but a change from connected to
disconnected during operation can damage the amplifier.
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Figure 4-3 Service position 2
To better access the component side of the LSP, do the
following (see figure above):
1. Remove the LSP bracket from the bottom tray by pulling it
backwards.
EN 8EM5.3A P/M AA4.
2. Hook the bracket in the first row of holes of the bottom tray.
In other words, reposition the bracket from [1] to [2].
4.3.3 LSP Solder Side
Mechanical Instructions
1
2
1
1502
2
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Figure 4-5 SSB removal (part 1)
1. Put the LSP in service position 2 (as described above).
2. Release the two clamps at the top of the SSB bracket [2]
and pull the bracket upward (it hinges in the bracket on the
LOT side).
3. You can now remove the complete SSB bracket.
1
3
SSB
3
Figure 4-4 Service position 3
To access the bottom side (solder side) of the LSP, do the
following (see figure above):
1. Remove the DAF module (see paragraph “DAF Assembly/
Panel” below).
2. To disconnect the degaussing coil from the LSP, remove
the cable from connector 1502 [1].
3. Release the wires from their clamps to make room to
reposition the LSP.
4. Turn the LSP 90 degrees clockwise [2], and place it in the
hole at the left side of the bottom tray [3].
4.3.4 Small Signal Board (SSB)
There is no predefined service position for the SSB. Most test
points are located on the A-side (the side that faces the tuner).
If you have to replace ICs, you must take the complete SSB
module out of the SIMM-connector.
Note: For access to the A-side, it is necessary to remove the
Auto-Scavem assembly (at the left side of the SSB). See the
description in the “Auto-Scavem Assembly/Panel” section
below.
To access the SSB test points, do the following:
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2
2
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Figure 4-6 SSB removal (part 2)
1. Push the top of the SSB toward the LOT [1].
2. Due to the pressure, the two metal clamps at both sides of
the SIMM-connector will release [2].
3. Take the complete SSB out [3].
Mechanical Instructions
SAM
SDM
2
SSB
1
1
Figure 4-7 SSB removal (part 3)
1. Once you have taken out the SSB, remove the shieldings
[2]. Sometimes it is necessary to unsolder some solder
tags before doing this [1].
2. Replace the SSB module in the SIMM-connector in reverse
order.
Notes:
•For better access to the SSB, it is possible to order an
“extension board,” which is part number 9965 000 05769.
•If it is necessary for measurements, you can put the LSP in
“service position 2” (as described above).
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4.4.2Side-I/O Assembly and Panel
3
2
Figure 4-9 Side I/O assembly
1. Release the snap hook [1] with your finger.
2. At the same time, pull the assembly backward [2].
3. Release the two clamps on the right side of the bracket (the
board hinges at the left side).
4. Remove the board from the bracket.
4.4.3AC Power Switch Assembly/Panel
1
1
EN 9EM5.3A P/M AA4.
2
1
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4.4Assembly / Board Removal
Sometimes, it may be necessary to swap a complete assembly
or Circuit Board Assembly (CBA). This procedure is explained
below.
4.4.1 Top Control Assembly/Panel
Top control board
Figure 4-8 Top control assembly
1. Release both screws (about 5 full turns).
2. Pull the complete assembly back and upwards (the
assembly hinges in the cabinet front).
3. Flip the assembly, and you can access the board by
(carefully) releasing the four clamps.
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061201
Figure 4-10 AC Power Switch Assembly
1. Release the two clamps by pushing them upward [1]. At the
same time, pull the complete assembly backward [2].
Note: Be aware that the degaussing coil may hamper this.
2. Release the two clamps on the two sides of the bracket (the
board hinges at the connector side).
3. Remove the board from the bracket.
4. If the light guide (located in the cabinet, in front of the
LEDs) is defective, you can replace it by pushing it forward
at the left side (it hinges at the right side, seen from the
rear).
EN 10EM5.3A P/M AA4.
Mechanical Instructions
4.4.4 DAF Assembly/Panel
1
2
4
4
3
3
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Figure 4-11 DAF module
1. Remove the screw [1] (if present).
2. Push the clamp [2] down, and, at the same time, pull the
complete bracket away from the CRT [3]. The module is
now free from the LSP bracket.
3. Release the clamps [4], in order to remove the board from
its bracket.
4.4.5 Auto-SCAVEM Assembly/Panel
This panel is placed on the left side of the SSB (See figure
“Service Position 2”). Because most of its components are
located on the bottom side, you must lift the panel from its
bracket before you can perform measurements.
1. Release the two clamps at the top.
2. Lift the panel from the bracket (it hinges at the bottom).
To remove the bracket:
1. First, remove the panel from the bracket, as described
above.
2. Remove the two screws at the bottom.
3. Lift the Auto-Scavem bracket slightly up, and at the same
time bend the top slightly away from the tuner.
4. Push the bracket in the direction of the CRT, and lift it out
of the LSP-bracket.
150501
This panel is placed in a bracket that is located on the left side
of the tuner.
To remove the bracket:
1. Pull the release handle [1] backwards. This will lift the
release catch, and the bracket can be pulled out
backwards.
2. Release the two securing clamps [2] and lift the board out
of the bracket.
3. Both sides of the panel are now easy accessible.
4.4.7Small Signal Board (SSB)
See section 4.3.4 “Small Signal Board (SSB)” above.
4.4.8Large Signal Panel (LSP)
1. Remove the SSB (see paragraph “Small Signal Board
(SSB)” above).
2. Remove the Auto-Scavem assembly (see paragraph “Auto
Scavem Assembly/Panel” above).
3. Disconnect the necessary cables.
4. Release the clamps on the left of the LSP-bracket (the
board hinges at the right side).
5. Remove the board from the bracket.
4.5Set Reassembly
To reassemble the set, perform all disassembly processes in
reverse order.
Before replacing the back cover:
•Be sure the AC power cord is mounted correctly in its
guiding brackets.
•Be sure all wires/cables are returned to their original
positions. This is very important due to the large “hot” area
of the set
4.4.6 Double Window Assembly/Panel
2
2
Figure 4-12 Double Window module
DW - MODULE
1
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Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 11EM5.3A P/M AA5.
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Problems and Solving Tips (related to CSM)
5.4 ComPair
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Protections
5.8 Repair tips
5.1Test Points
The EM5 chassis is equipped with test points printed on the
circuit board assemblies. They refer to the schematic diagram
letters. The numbering is in a logical sequence for diagnostics.
Always start diagnosing (within a functional block), in the
sequence of the relevant test points for that block.
Perform measurements under the following conditions:
•Set in Service Default Mode.
•Video: color bar signal.
•Audio: 3 kHz left, 1 kHz right.
5.2Service 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 a Philips Customer Care Centre (P3C) and a
customer.
There is also the option of using ComPair, a hardware interface
between a computer (see requirements below) and the TV
chassis. It offers the ability of structured troubleshooting, test
pattern generation, error code reading, software version
readout, and software upgrading.
Minimum requirements: a Pentium processor, Windows 95/
98, and a CD-ROM drive (see also paragraph "ComPair").
Note: This chassis is equipped with a LED configuration with
separate blue and red LEDs. This is different from the
bicoloured version we know from EM5E. The blue LED is
controlled by software (via ON_OFF_LED). The red LED will
light in anti-phase to the blue one, but with a time delay. This
means that if the blue LED is blinking fast, the red LED will stay
off. But after the blue LED is "OFF" long enough, the red LED
will go "ON".
So take care: In certain service modes (e.g. blinking LED,
stepwise start-up, etc.) you must observe the blue LED and
ignore the red LED.
5.2.1 Service Default Mode (SDM)
Purpose
•To create a pre-defined setting, to get the same
measurement results as given in this manual.
•To override SW protections.
•To start the blinking LED procedure.
Specifications
•Tuning frequency: 475.25 MHz for PAL/SECAM.
Tuning frequency: 61.25 MHz for NTSC.
•Colour system: PAL B/G or NTSC.
•All picture settings at 50 % (brightness, colour, contrast).
•All sound settings at 50 %, except volume at 25 %.
•All service-unfriendly modes (if present) are disabled, like:
– (Sleep) timer.
– Child/parental lock.
– Blue mute.
– Automatic volume limiter (AVL).
– Auto switch-off (when no video signal was received for
10 minutes).
– Skip/blank of non-favourite pre-sets.
– Smart modes.
– Auto store of personal presets.
– Auto user menu time-out.
How to enter SDM
•Use one of the following methods:
•Use the standard RC-transmitter and key in the code
"062596", directly followed by the "MENU" button.
Note: It is possible that, together with the SDM, the main
menu will appear. To switch it off, push the "MENU" button
again.
•When you shorten for a moment the two solder pads on the
'external part' of the SSB print, with the indication "SDM".
Activation can be performed in all modes, except when the
set has a problem with the main-processor.
Caution: If the SDM is entered via the pins, all the
software-controlled protections are de-activated.
•Use the "DEFAULT" button in the DST-emulation feature of
ComPair.
•Use the "DEFAULT" button on the Dealer Service Tool
(RC7150).
After entering this mode, "SDM" will appear in the upper right
corner of the screen.
How to navigate
When you press the "MENU" button on the RC transmitter, the
set will toggle between the SDM and the normal user menu
(with the SDM mode still active in the background).
How to exit SDM
Use one of the following methods:
•Switch the set to STANDBY via the RC-transmitter.
•Press the "EXIT" button in the DST-emulation feature of
ComPair.
•Via a standard customer RC-transmitter: key in "00"sequence.
5.2.2Service Alignment Mode (SAM)
Purpose
•To perform (software) alignments.
•To change option settings.
•To easily identify the used software version.
•To view operation hours.
•To display (or clear) the error code buffer.
Specifications
•Operation hours counter.
•Software version.
•Option settings.
•Error buffer reading and erasing.
•Software alignments.
How to enter SAM
Use one of the following methods:
•Via a standard RC transmitter: key in the code "062596"
directly followed by the "OSD [i+]" button. After activating
SAM with this method a service warning will appear on the
screen, you can continue by pressing any digit key on the
RC.
•Short for a moment the two solder pads on the 'external
part' of the SSB print, with the indication SAM. Depending
on the software version it is possible that the service
warning will appear, you can continue by pressing any digit
key on the RC.
EN 12EM5.3A P/M AA5.
Service Modes, Error Codes, and Fault Finding
•Use the DST-emulation feature of ComPair.
•Press the ALIGN button on the DST while the set is in the
normal operation
After entering this mode, "SAM" will appear in the upper right
corner of the screen.
Contents of SAM:
•OPERATION HOURS. Displays the accumulated total of
operation hours (not the standby hours).
•HARDWARE INFO
– ROM VERSION. Displays the date of the software and
the software version of the ROM (example: EM53AP_
1.0_01234 = AAAABB-X.Y_NNNNN).
•AAAA= the chassis name.
•BB= the region: EU= Europe, AP= Asia Pacific
PAL/Multi, AN= Asia Pacific NTSC, US= USA, LT=
LATAM.
•X.Y= the software version, where X is the main
version number (different numbers are not
compatible with one another) and Y is the sub
version number (a higher number is always
compatible with a lower number).
•NNNNN= last five digits of 12nc code software.
– FBX VERSION. The 12NC-number of the build in
Feature Box software.
•ERRORS (followed by maximal 10 errors). The most
recent error is displayed at the upper left (for an error
explanation see paragraph "Error Codes").
•DEFECTIVE MODULE. Here the module that generates
the error is displayed. If there are multiple errors in the
buffer, which are not all generated by a single module,
there is probably another defect. It will then display the
message "UNKNOWN" here.
•RESET ERROR BUFFER. When you press the "OK"
button, the error buffer is reset.
•ALIGNMENTS. This will activate the "ALIGNMENTS" submenu.
•DEALER OPTIONS. Extra features for the dealers.
•SERVICE OPTIONS. Extra features for Service.
•INITIALISE NVM. When an NVM was corrupted (or
replaced) in the former EM3 chassis, the microprocessor
replaces the content with default data (to assure that the
set can operate). However, all pre-sets and alignment
values are gone now, and option numbers are not correct.
Therefore, this was a very drastic way. In this chassis, the
procedure is implemented in another way: The moment the
processor recognises a corrupted NVM, the "INITIALISE
NVM" line will be highlighted. Now, you can do two things
(dependent of the service instructions at that moment):
– Save the content of the NVM via ComPair for
development analysis, before initialising. This will give
the Philips Service department an extra possibility for
diagnosis (e.g. when Development asks for this).
– Initialise the NVM (same as in the past, however now it
happens conscious).
•STORE. All options and alignments are stored when
pressing the "OK"-button
•FUNCTIONAL TEST. All devices are tested via the "OK"
button. Eventual errors are displayed in the error buffer.
The error buffer is not erased, the content returns when this
test is terminated.
•DAILY MENUS. With the "OK" button, you can go to the
normal user menu. SAM is still active in the background.
With the "MENU" button, you return from the user menu to
SAM menu. This feature can be helpful to quickly change
some settings in the user menu.
•SW MAINTENANCE
– UPGRADE. Not applicable for this chassis
– EVENTS. Not useful for service purposes. In case of
specific software problems, the development
department can ask for this info.
– BDM INFO. Broadcast Debug Menu info. The purpose
of this menu is to debug the broadcast, NOT the TV.
The menu gives an overview of what is received on the
current preset. Following items are displayed:
P r e s e t n r : -- UTC: - - : - - : --
P r e s e t n a m e : ----- LTO: - - : - - : --
Time: - - : - - : --
C N I N V M : ---- Date: - - / - - / ----
C N I F 1 : ----
C N I F 2 : ---- Time TXT: - - : - - : --
C N I V P S : ---- Time 8/30 F1: - - : - - : --
M o r n i n g P r o g : --- Date 8/30 F1: - - / - - / ----
N a m e 8 / 3 0 F 1 : ----- LTO 8/30 F1: - - : - - : --
N a m e 8 / 3 0 F 2 : -----
N a m e T X T : ----- WSS G1: - - - -
S i g n a l S t r e n g t h :--- WSS G2: - - - -
WSS G3: - - -
E P G S e r v i c e : --- WSS G4: - - -
CL 36532017_055.eps
240403
Figure 5-1 Broadcast debug menu overview.
Table 5-1 Broadcast debug menu explanation
ItemSourceDescription
PresetnrSetPresetnumber of the current selected
PresetnameSetPresetname of the current selected
CNI NVMBroadcasterCNI number stored in NVM for the
CNI F1BroadcasterCNI number from transmitted Packet 8/
CNI F2BroadcasterCNI number from transmitted Packet 8/
CNI VPSBroadcasterCNI number from transmitted VPS line.
Morning ProgBroadcaster"ARD" or "ZDF" according to dedicated
Name 8/30 F1BroadcasterName extracted from status message of
Name 8/30 F2BroadcasterName extracted from status message of
Name TXTBroadcasterName extracted from TXT header.
Signal StrengthFBXNoise figure measured for selected
EPG ServiceSetEPG Service stored in NVM for current
UTCSetUTC (Universal Time Code formerly
LTOSetLTO (Local Time Offset) used in the set.
TimeSetCurrent time running in the set. Was
DateSetCurrent date running in the set. Was
Time TXTBroadcasterTXT header time from the selected
Time 8/30 F1BroadcasterUTC time from 8/30 Format 1.
WSS G2BroadcasterWSS Group 2 (Enhanced Services) bits 4
WSS G3BroadcasterWSS Group 3 (Subtitles) bits 8 9 10
WSS G4BroadcasterWSS Group 4 (Reserved) bits 11 12 13
preset.
preset.
current preset.
30 Format 1.
30 Format 2.
bit in 8/30 Format 1.
8/30 Format 1.
8/30 Format 2.
preset.
preset displayed as "TXT", "MCP",
"SCP", "OCP".
known as Greenwich Mean Time) used in
the set.
Used by EPG for all Nextview displays. (=
Time TXT header - Time 8/30 F1 )
extracted at startup, then maintained by
software.
extracted at startup, then maintained by
software.
preset.
5 6 7
How to navigate
•In SAM, you can select the menu items with the "CURSOR
UP/DOWN" key on the RC-transmitter. The selected item
will be highlighted. When not all menu items fit on the
screen, move the "CURSOR UP/DOWN" key to display the
next/previous menu items.
•With the "CURSOR LEFT/RIGHT" keys, it is possible to:
– (De) activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected submenu.
Service Modes, Error Codes, and Fault Finding
EN 13EM5.3A P/M AA5.
How to exit SAM
Use one of the following methods:
•Press the "MENU" button on the RC-transmitter, or
•Switch the set to STANDBY via the RC-transmitter, or
•Press the "EXIT" button on the DST.
5.2.3 Customer Service Mode (CSM)
Purpose
When a customer is having problems with his TV-set, he can
call his dealer. The service technician can than ask the
customer to activate the CSM, in order to identify the status of
the set. Now, the service technician can judge the severity of
the complaint. In many cases, he can advise the customer how
to solve the problem, or he can decide if it is necessary to visit
the customer.
The CSM is a read only mode; therefore, modifications in this
mode are not possible.
How to enter CSM
Use one of the following methods:
•Press the "MUTE" button on the RC-transmitter
simultaneously with the "MENU" button on the TV (top
control) for at least 4 seconds.
•Key in the code "123654" via the standard RC transmitter.
Note: Activation of the CSM is only possible if there is no (user)
menu on the screen!
How to navigate
By means of the "CURSOR-DOWN/UP" knob on the RCtransmitter, you can navigate through the five menus.
Contents of CSM
Customer Service Menu 1
•SOFTWARE VERSION (example: EM53AP_1.0_01234).
Displays the build in software version. In case of field
problems related to software, software flash-RAM
pos.7006 must be changed by a new one. Do this via
soldering. You will find details of the software versions in
the chapter "Software Survey" of the "Product Survey Colour Television" publication. This publication is
generated four times a year.
•FEATURE BOX. The 12NC-number of the build in Feature
Box software
•SET TYPE. This information is very helpful for a helpdesk/
workshop as reference for further diagnosis. In this way, it
is not necessary for the customer to look at the rear of the
TV-set.
•CODE 1. Gives the latest 5 errors of the error buffer. As
soon as the built-in diagnose software has detected an
error the buffer is adapted. The last occurred error is
displayed on the leftmost position. Each error code is
displayed as a 3-digit number. When less than 10 errors
occur, the rest of the buffer is empty (000). See also
paragraph "Error Codes" for a description.
•CODE 2. Gives the first 5 errors of the error buffer. See
also paragraph Error Codes for a description.
•VOLUME. Gives the last status of the volume as set by the
customer. The value can vary from 0 (volume is minimum)
to 100 (volume is maximum). Volume values can be
changed via the volume key on the RC-transmitter.
•BRIGHTNESS. Gives the last status of the brightness as
set by the customer. The value can vary from 0 (brightness
is minimum) to 100 (brightness is maximum). Brightness
values can be changed via the "CURSOR LEFT" and
"CURSOR RIGHT" keys on the RC-transmitter after
pressing the "MENU" button and selecting "PICTURE" and
"BRIGHTNESS".
•CONTRAST. Gives the last status of the contrast as set by
the customer. The value can vary from 0 (contrast is
minimum) to 100 (contrast is maximum). Contrast values
can be changed via "CURSOR LEFT" and "CURSOR
RIGHT" keys on the RC-transmitter after pressing the
"MENU" button and selecting "PICTURE" and
"CONTRAST".
•COLOUR. Gives the last status of the colour saturation, as
set by the customer. The value can vary from 0 (colour is
minimum) to 100 (colour is maximum). Colour values can
be changed via "CURSOR LEFT" and "CURSOR RIGHT"
keys on the RC-transmitter after pressing the "MENU"
button and selecting "PICTURE" and "COLOUR".
•HUE. Only relevant for NTSC-signals (e.g. some NTSCDVD-discs).
Customer Service Menu 2
•SHARPNESS. Gives the sharpness value. The value can
vary from 0 (sharpness is minimum) to 7 (sharpness is
maximum). In case of bad antenna signals, a too high
value of the sharpness can result in a noisy picture.
Sharpness values can be changed via the "CURSOR
LEFT" and "CURSOR RIGHT" keys on the RC-transmitter
after pressing the "MENU" button and selecting
"PICTURE" and "SHARPNESS".
•HEADPHONE VOLUME. Gives the last status of the
headphone volume, as set by the customer. The value can
vary from 0 (volume is minimum) to 100 (volume is
maximum). Headphone volume values can be changed via
the "CURSOR LEFT" and "CURSOR RIGHT" keys on the
RC-transmitter after pressing the "MENU" button and
selecting "SOUND" and "HEADPHONE VOLUME".
•SURROUND MODE. Indicates the by the customer
selected surround mode (or automatically chosen mode).
In case the set is a Non-Dolby set, there will be displayed
"0". If it is a Dolby-set then is displayed: "STEREO", "3
STEREO", "HALL", "3DSURROUND", "DOLBY PRO
LOGIC" or "DOLBY DIGITAL". These settings can be
influenced after pressing the "MENU" button and selecting
"SOUND" and SURROUND MODE". It can also have been
selected automatically by signalling bits (internal software).
•TUNER FREQUENCY. Indicates the frequency the
selected transmitter is tuned to. The tuner frequency can
be changed via the "CURSOR LEFT" and "CURSOR
RIGHT" keys for fine tune after opening the installation
menu and selecting "INSTALL" and "MANUAL INSTALL".
•DIGITAL OPTION. Gives the selected digital mode, "100
HZ", "DIGITAL SCAN", "NATURAL MOTION", "DOUBLE
LINES", or "PIXEL PLUS". Change via "MENU",
"PICTURE", "DIGITAL OPTIONS".
•CENTRE TRIM. Indicates the difference between main
volume and volume of centre speaker. Change via:
"MENU", "SETUP", "SPEAKERS", and "CENTRE
VOLUME" (not available when "Surround Mode" is set to
"STEREO" or "HALL"). The value can vary from "-10" to
"+10"
•TV SYSTEM. Gives information about the video system of
the selected transmitter.
– BG: PAL BG signal received.
– DK: PAL DK signal received.
– I: PAL I signal received.
– L/La: SECAM L/La signals received.
– M: NTSC M signal received with video carrier on 38.9
MHz.
Customer Service Menu 3
•BALANCE. Indicates the balance settings, between "-50"
and "+50". Change via "MENU", "SOUND", and
"BALANCE". Not applicable for Dolby Pro Logic sets.
•CENTRE MODE. Indicates if centre mode is set "ON" or
"OFF". When centre mode is on, all TV speakers are used
as one centre speaker. Change Centre mode via "MENU",
"SETUP", "SPEAKERS", and "CENTRE MODE".
•DNR. Gives the selected DNR setting (Dynamic Noise
Reduction), "OFF", "MINIMUM", "MEDIUM", or
"MAXIMUM". Change via "MENU", "PICTURE", "DNR"
•NOISE FIGURE. Gives the noise ratio for the selected
transmitter. This value can vary from 0 (good signal) to 127
EN 14EM5.3A P/M AA5.
Service Modes, Error Codes, and Fault Finding
(average signal) and to 255 (bad signal). For some
software versions, the noise figure will only be valid when
"Active Control" is set to "medium" or "maximum".
•SOURCE. Indicates which source is used and the video/
audio signal quality of the selected source. (Example:
Tuner, Video/NICAM) Source: "TUNER", "EXT1", "EXT2",
"EXT3", "EXT4", "SIDE", "AV1", "AV2", "AV3" or "AV4".
Video signal quality: "VIDEO", "S-VIDEO", "RGB 1FH",
"YPBPR 1FH 480P", "YPBPR 1FH 576P", "YPBPR 1FH
1080I", "YPBPR 2FH 480P", "YPBPR 2FH 576P", "YPBPR
2FH 1080I", "RGB 2FH 480P", "RGB 2FH 576P" or "RGB
2FH 1080I". Audio signal quality: "STEREO", "SPDIF 1",
"SPDIF 2" or "SPDIF".
•AUDIO SYSTEM. Gives information about the audio
system of the selected transmitter: "ANALOGUE MONO",
"ANALOGUE STEREO", "PCM 2/0", "DD 1/0", "DD 2/0
LtRt", "DD 2/0 L0R0", "DD 2/1", "DD 2/2", "DD 3/0", "DD 3/
1", "DD 3/2", "DD 1+1", "MPEG 1/0", "MPEG 2/0", "MPEG
2/0 LtRt", "MPEG 2/1", "MPEG 2/2", "MPEG 3/0", "MPEG
3/1", "MPEG 3/2", "MPEG 1+1" or "MPEG 2+2".
•TUNED BIT. Gives information about the tuning method of
the stored pre-set. If a channel is found via "automatic
installation", you will see the value "NO". When you change
this (automatically found) frequency via "fine tune"
adjustment (installation menu - manual installation), the
displayed value will change to "YES". Therefore, when you
see the value "YES" in this line, it is an indication that the
received channel is a non-standard signal (e.g. of a VCR).
•SURROUND SPEAKERS. Indicates if the surround
speakers are present, "OFF" or "ON". Change via "MENU",
"SETUP", "SPEAKERS", and "SURROUND SPEAKERS".
•ON TIMER. Indicates if the "On Timer" is set "ON" or "OFF"
and if the timer is "ON" also displays start time, start day
and program number. Change via "MENU", "TV",
"FEATURES", and "ON TIMER".
•PRESET LOCK. Indicates if the selected preset has a child
lock: "LOCKED" or "UNLOCKED". Change via "MENU",
"TV", "FEATURES", "CHILD LOCK", and "CUSTOM
LOCK".
Customer Service Menu 4
•CHILD LOCK. Indicates the last status of the general child
lock: "UNLOCK", "LOCK", or "CUSTOM LOCK". Change
via "MENU", "TV", "FEATURES", "CHILD LOCK", and
"LOCK".
•AGE LOCK. Indicates the last status of the EPG rating for
child lock: "OFF", "4 YEARS", "6 YEARS", "8 YEARS", "10
YEARS", "12 YEARS", "14 YEARS" or "16 YEARS". This
is only displayed if child lock is set to "CUSTOM LOCK"
•LOCK AFTER. Indicates at what time the child lock is set:
"OFF" or e.g. "18:45" (lock time). This is only displayed if
child lock is set to "CUSTOM LOCK"
•CATEGORY LOCK. Indicates the last status of the EPG
theme childlock: "MOVIES", "NEWS", "SHOWS",
"SPORTS", "CHILDREN", "MUSIC", "CULTURE", or
"SERIES". This is only displayed if child lock is set to
"CUSTOM LOCK". It is possible that more than one value
is shown.
•PROGRAM CATEGORY. Indicates the theme of the
selected transmitter: "MOVIES", "NEWS", "SHOWS",
"SPORTS", "CHILDREN", "MUSIC", "CULTURE", or
"SERIES".
•TV RATINGS LOCK. Only applicable for US.
•MOVIE RATINGS LOCK. Only applicable for US.
•V-CHIP TV STATUS. Only applicable for US.
•AVL. Indicates the last status of AVL (Automatic Volume
Level): "ON" or "OFF". Change via "MENU", "TV",
"SOUND", "AVL"
•DELTA VOLUME. Indicates the last status of the delta
volume for the selected preset as set by the customer: from
"-12" to "+12". Change via "MENU", "TV", "SOUND",
"DELTA VOLUME".
•FRONT SPKR DIST. Indicates the last status of the
distance to the front speakers as set by the customer: "1m",
"2m", or "3m",.... Change via "MENU", "SETUP",
"SPEAKERS", "TO FRONT".
•SURR. SPKR DIST. Indicates the last status of the
distance to the surround speakers as set by the customer:
"1m", "2m", or "3m",. Change via "MENU", "SETUP",
"SPEAKERS", "TO SURROUND".
How to exit CSM
Use one of the following methods:
•After you press a key on the RC-transmitter (with exception
of the "CHANNEL", "VOLUME" and digit (0-9) keys), or
•After you switch the TV-set "OFF" with the mains switch.
5.3Problems and Solving Tips (related to CSM)
Note: Below described problems are all related to the TV
settings. The procedures to change the value (or status) of the
different settings are described above. New value(s) are
automatically stored.
5.3.1Picture Problems
Snowy/noisy picture
1. Check line 24 "Noise Figure". In case the value is 127 or
higher, and the value is also high on other programs, check
the aerial cable/aerial system. For some software
versions, the noise figure will only be valid when "Active
Control" is set to "medium" or "maximum".
2. Check lines 11 "Sharpness" and 24 "Noise Figure". In case
the value of line 11 is 3 or 4 and the value of line 24 is high
(127 or higher), decrease the "Sharpness" value.
Picture too dark
1. Press "MENU", "TV", "PICTURE", "SMART PICTURE". In
case the picture improves, increase the "Brightness" or the
"Contrast" value. The new value(s) are automatically
stored (in "personal" pre-set) for all TV channels.
2. Check line 7 "Brightness" and 8 "Contrast". If the value of
line 7 is low (< 10) or the value of line 8 is low (< 10),
increase the "Brightness" or the "Contrast" value.
Picture too bright
1. Press "MENU", "TV", "PICTURE", "SMART PICTURE". In
case the picture improves, decrease the "Brightness" or
the "Contrast" value. The new value(s) are automatically
stored (in "personal" pre-set) for all TV channels.
2. Check lines 7 "Brightness" and 8 "Contrast". If the value of
line 7 is high (> 40) or the value of line 8 is high (> 50).
Decrease the "Brightness" value or increase the "Contrast"
value.
Customer Service Menu 5
•V-CHIP MOVIE STATUS. Only applicable for US.
•OPTIONS 1. Gives the option codes of option group 1 as
set in SAM (Service Alignment Mode).
•OPTIONS 2. Gives the option codes of option group 2 as
set in SAM (Service Alignment Mode).
Service Modes, Error Codes, and Fault Finding
EN 15EM5.3A P/M AA5.
White line around picture elements and text
1. Press "MENU", "TV", "PICTURE", "SMART PICTURE". In
case the picture improves, decrease the "Sharpness"
value. The new value is automatically stored (in "personal"
pre-set) for all TV channels.
2. Check line 11 "Sharpness". Decrease the "Sharpness"
value. The new value is automatically stored for all TV
channels.
No picture
Check line 27 "Tuned bit". In case the value is "No", install the
required program again. Open the installation menu and
perform manual installation.
Blue picture
No proper signal is received. Check the aerial cable/aerial
system.
Blue picture and/or unstable picture
A scrambled or decoded signal is received.
Black and white picture
Check line 9 "Colour". In case the value is low (< 10), increase
the "Colour" value. The new value is automatically stored for all
TV channels.
Menu text not sharp enough
1. Press "MENU", "TV", "PICTURE", "SMART PICTURE". In
case picture improves, decrease the contrast value. The
new value(s) are automatically stored for all TV channels.
2. Check line 8 "Contrast". The value of line 8 is high (> 50).
Decrease the contrast value.
5.3.2 Sound Problems
No sound from left and right speaker
Check line 6 "Volume". The value is low. Increase the value of
"Volume". The new value(s) are automatically stored (in
"personal" pre-set) for all TV channels.
Sound too loud for left and right speaker
Check line 6 "Volume". The value is high. Decrease the value
of " Volume". The new value(s) are automatically stored (in
"personal" pre-set) for all TV channels.
5.4ComPair
5.4.1 Introduction
5.4.2Specifications
ComPair consists of a Windows based faultfinding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
or RS232 cable.
For this chassis, the ComPair interface box and the TV
communicate via a bi-directional service cable via the service
connector.
The ComPair faultfinding program is able to determine the
problem of the defective television. ComPair can gather
diagnostic information in two ways:
•Automatic (by communication with the television):
ComPair can automatically read out the contents of the
entire error buffer. Diagnosis is done on I
can access the I
and receive I
2
C bus of the television. ComPair can send
2
C 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 I
of the TV-set.
•Manually (by asking questions to you): Automatic
diagnosis is only possible if the micro controller of the
television is working correctly and only to a certain extends.
When this is not the case, ComPair will guide you through
the faultfinding tree by asking you questions (e.g. Does the
screen give a picture? Click on the correct answer: YES /
NO) and showing you examples (e.g. Measure test-point I7
and click on the correct oscillogram you see on the
oscilloscope). You can answer by clicking on a link (e.g.
text or a waveform picture) that will bring you to the next
step in the faultfinding process.
By a combination of automatic diagnostics and an interactive
question / answer procedure, ComPair will enable you to find
most problems in a fast and effective way.
Beside fault finding, ComPair provides some additional features like:
•Up- or downloading of pre-sets.
•Managing of pre-set lists.
•Emulation of the Dealer Service Tool (DST).
•If both ComPair and SearchMan (Electronic Service
Manual) are installed, all the schematics and the PWBs of
the set are available by clicking on the appropriate
hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Mono-carrier.
– Click on the "Panel" hyperlink to automatically show
the PWB with a highlighted capacitor C2568.
– Click on the "Schematic" hyperlink to automatically
show the position of the highlighted capacitor.
2
C level. ComPair
2
C busses
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
•ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.
•ComPair allows very detailed diagnostics (on I
is therefore capable of accurately indicating problem areas.
You do not have to know anything about I
2
C level) and
2
C 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.
5.4.3Stepwise Start-up
Under normal circumstances, a fault in the power supply, or an
error during start-up, will switch the television to protection
mode. ComPair can take over the initialisation of the television.
In this way, it is possible to distinguish which part of the startup routine (hence which circuitry) is causing the problem.
Take notice that the transition between two steps can take
some time, so give the set some time to reach a stable state.
During the transition time the LED can blink strangely.
Stepwise start- up explanation
This is realised via ComPair and is very helpful when a
protection is activated (see also chapter "Protections").
EN 16EM5.3A P/M AA5.
Service Modes, Error Codes, and Fault Finding
Table 5-2 Stepwise start-up table
StateDescription mode
0Low power standby: 5V2/3V3 present,
uP in standby-mode
1High power Standby: TV-set in standby-
mode
2Main Power On: HOP in standby, 5V/8V
present, I2C protections on, SSB is
powered by standby-supply (5V/8V).
Degaussing (12 s) has been activated,
MSP is reset.
3Initialized (Semi standby): most IC's are
initialized, HOP still in standby
4HOP: HOP fully powered and working,
EHT is present, rest of IC's initialized,
black current stabilisation is off, picture
is still blanked
5On: TV-set operates, black current
stabilisation is on, picture is unblanked.
Display
LED
OnNone
Wait 1s,
flash 1 x
Wait 1s,
flash 2 x
Wait 1s,
flash 3 x
Wait 1s,
flash 4 x
Wait 1s,
flash 5 x
Note (*):
• When the set is in stepwise mode and, due to stepping-up,
a protection is activated, the set will really go into protection
(blinking LED). The set will not leave the stepwise-mode
however. If state X is the state where the set went to
protection, stepwise start-up will return to state X-1. At
state (X-1) diagnostic measurements can be performed.
Also, in the short time the set is in state X but not yet in
protection, you can also do some measurements.
5.4.4 How To Connect
This is described in the chassis fault finding database in
ComPair .
Note: If you encounter any problems, contact your local
support desk.
Enabled
protection
None
4 & 5
Plus 1, 6 & 18
Plus 2 & 16
5.5Error Codes
5.5.1Introduction
The error code buffer contains all detected errors since the last
time the buffer was erased. The buffer is written from left to
right, new errors are logged at the left side, and all other errors
shift one position to the right.
When an error has occurred, the error is added to the list of
errors, provided the list is not full or the error is a protection
error.
When an error occurs and the error buffer is full, then the new
error is not added, and the error buffer stays intact (history is
maintained), except when the error is a protection error.
To prevent that an occasional error stays in the list forever, the
error is removed from the list after 50+ operation hours.
When multiple errors occur (errors occurred within a short time
span), there is a high probability that there is some relation
between them.
5.5.2How to read the Error Buffer
Use one of the following methods:
•On screen via the SAM (only if you have a picture).
Examples:
– 0 0 0 0 0: No errors detected
– 6 0 0 0 0: Error code 6 is the last and only detected
error
– 9 6 0 0 0: Error code 6 was first detected and error
code 9 is the last detected error
•Via the blinking LED procedure (when you have no
picture). See next paragraph.
•Via ComPair.
5.5.3How to clear the Error Buffer
Use one of the following methods:
•By activation of the "RESET ERROR BUFFER" command
in the SAM menu.
•With a normal RC, key in sequence "MUTE" followed by
"062599" and "OK".
•When you transmit the commands "DIAGNOSE" - "99" "OK" with ComPair (or with a DST).
•If the content of the error buffer has not changed for 50+
hours, it resets automatically.
5.5.4 Error Codes
In case of non-intermittent faults, clear the error buffer before
you begin the repair. This to ensure that old error codes are no
longer present. Before clearing the buffer, write down the
content, as this history can give you significant information.
If possible, check the entire contents of the error buffer. In
some situations, an error code is only the result of another error
code and not the actual cause (e.g., a fault in the protection
detection circuitry can also lead to a protection).
There are various errors:
2
•I
C device errors.
2
•I
C bus errors.
•Protection errors.
•Errors not related to an I
– BLACK CURRENT LOOP (ERROR 28): detection of a
continuous fail of the black current stabilisation loop of
the HOP.
– FEM (ERROR 26): at start-up, after initialisation of the
PICNIC, the presence of the FALCONIC can be
checked.
– EAGLE (ERROR 27): at start-up, after initialisation of
the PICNIC, the presence of the Eagle can be
checked.
8TDA932xHIP High-end Input Processor 7323Chroma IF IOB2
12TDA9178Topic7302Video ControllerB4
13UV1318/...Tuner protection1T01TunerA8
14MSPxxxxITT sound processor7651Audio moduleB6a
16FBXFeature Box Protection/+3V (Fbx) SupplyB3
18Fast I2C bus blockedSpontaneous blinking error 18 /Fast I2C Blocked/
19TDA8444Auto Scavem DAC7500Auto ScavemSC1
26SAA4998FEM7760+3V (Fbx) SupplyB3b
27T6TX5EFEagle7720+3V (Fbx) SupplyB3c
28Black current loopBlack current loop/Video Controller/
32M29W400BTFlash Ram (EPG)7012EPG MemoryB5a
35T6TU5XBColumbus7752Video ControllerB3d
EN 17EM5.3A P/M AA5.
Note:
Error codes 1, 6, or 18 are protection codes and in this case,
supplies of some circuits will be switched "OFF". Also, in
protection, the LED will blink the number of times equivalent to
the most recent error code.
5.6The Blinking LED Procedure
5.6.1 Introduction
Via this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful for fault
finding, when there is no picture.
When the SDM is entered, the front LED will show (blink) the
contents of the error-buffer. Error-codes = 10 are shown as
follows:
•A long blink of 750 ms (which is an indication of the decimal
digit),
•A pause of 1.5 s,
•"n" short blinks (where "n" = 1 - 9),
•When all the error-codes are displayed, the sequence
finishes with a LED blink of 3 s,
•The sequence starts again.
Example: Error 12 9 6 0 0.
After activation of the SDM, the red front LED will show:
•1 long blink of 750 ms (which is an indication of the decimal
digit) followed by a pause of 1.5 s,
•2 short blinks followed by a pause of 3 s,
•9 short blinks followed by a pause of 3 s,
•6 short blinks followed by a pause of 3 s,
•1 long blink of 3 s to finish the sequence,
•The sequence starts again.
Note: If errors 1, 6 or 18 occur, the LED always gives the last
occurred error even if the set is NOT in service mode.
5.6.2 How to Enter
Use one of the following methods:
•Enter the SDM (only via soldering pads marked "SDM" on
SSB). The blinking red front LED will show the entire
contents of the error buffer (this works in "normal
operation" mode and in "protection" mode).
•Transmit the commands "MUTE" - "062500" - "OK" with a
normal RC. The complete error buffer is shown. Take
notice that it takes some seconds before the blinking led
LED starts.
•Transmit the commands "MUTE" - "06250x" - "OK" with a
normal RC (where "x" is a number between 1 and 5). When
x= 1 the last detected error is shown, x= 2 the second last
error, etc.... Take notice that it takes some seconds before
the blinking led LED starts.
•"DIAGNOSE X" with the DST (where "x" is a number
between 1 and 5). When x= 1 the last detected error is
shown, x= 2 the second last error, etc.... When x = 0 all
errors are shown.
5.7Protections
5.7.1Introduction
This chassis has only one microprocessor (OTC), which
remains active during Standby. This because power of the
microprocessor and the attached memory chip set is coming
from the 3V3 supply, which is derived from the 5V Standbycircuitry. Therefore, in both Power-on as in Standby mode, the
microprocessor is connected to this power supply.
If a fault situation is detected, an error code will be generated
and if necessary, the set is put in protection mode. The
protection mode is indicated by the blinking of the front LED at
a frequency of 3 Hz (or by a coded blinking in special cases).
In some error cases however, the microprocessor does not put
the set in the protection mode (this is the case with the hardware - loudspeaker protection of the audio amplifier).
The content of the error buffer can be read via the service menu
(SAM), the blinking LED procedure or via DST/ComPair.
To get a quick diagnosis, this chassis has three service-modes
implemented:
•The Customer Service Mode (CSM).
•The Service Default Mode (SDM). Start-up of the set in a
predefined way.
•The Service Alignment Mode (SAM). In this mode, items
of the set can be adjusted via a menu.
You can enter both SDM and SAM modes via the 'service pads'
on the SSB, via an RC-transmitter (DST or standard RC), or via
ComPair. It is not possible to enter the SAM in "standby"; the
TV has to be in "normal operation" mode.
The "Protection Diagram" shows the structure of the protection
system. See diagram below.
EN 18EM5.3A P/M AA5.
Service Modes, Error Codes, and Fault Finding
7301
EHT-info
Flash detect
HFB
I2C PROTECTIONS
HIP
HOP
PICNIC
TUNER
NVM
DNR
MSP
TOPIC
FBX
PROTECTION
PICNIC 3V3
+8V_CON
+5V_CON
I2C
HFB-XRAY-PROT
I2C
7001
CL 16532044_024.eps
Figure 5-3 Protection diagram
There are several types of protections:
2
•I
C related protections.
•OTC related protections (via polling on I/O pins or via
algorithms).
•HOP related protections (mainly for deflection items).
•Hardware errors that are not sensed by the OTC (e.g.
vertical flyback protection, bridge coil protection, E/W
protection, arcing protection).
All protections are explained below.
5.7.2 I2C Related Protections
In normal operation, some registers of the I
refreshed every 200 ms. During this sequence, the I
and the I
An I
2
C ICs are checked.
2
C protection will take place if the SDA and SCL lines are
2
C controlled ICs are
short-circuited to ground, or to each other. An I
occur, if the power supply of the IC is missing (e.g. FBX_PROT
(error 16)).
5.7.3 OTC Related Protections
If a protection is detected at an OTC input, the OTC will start to
scan all protection inputs every 200 ms for 5 times. If the
protection on one of the inputs is still active after 1 s, the
microprocessor will put the set in the protection mode.
Before the scanning is started, a so-called "ESD refresh" is
carried out. This is done, because the interrupt on one of the
inputs is possibly caused either by a flash or by ESD. As a flash
or ESD can influence IC settings, the HIP, MSP, 3D Comb (US
only) and wireless module are initialised again, to ensure the
normal picture and sound conditions of the set.
8 V and 5 V protection: The microprocessor senses the
presence of the 8 V and 5 V (via the "+5V_CON" and
"+8V_CON" lines). If one (or both) of these voltages is (are) not
present, an error code is stored in the error buffer of the NVM,
and the set is put in the protection mode.
XPR (43)
HOP
FLS (5)
+8V SENSE (105)
+5V SENSE (106)
OTC
I2C
090501
2
C busses
2
C error will also
of the inputs of the HOP, the relevant error bit in the HOP
register is set to "high". If this error bit is still "high" after 1 s, the
OTC will store the error code in the error buffer of the NVM and,
depending on the relevancy of the error bit, the set will either
go into the protection mode or not.
The following protections are implemented:
•HFB (Horizontal Flyback): If the horizontal flyback is not
present, this is detected via the HOP (HFB_XRAY_PROT). One status bit is set to "high". The error code
is stored in the error buffer and the set will go into the
protection mode.
•XPR (X-ray protection): If the HFB pulses are too low
(level detection), the HOP will detect this via the XPR-bit.
The error will be logged in the error buffer and the set will
go into protection mode.
Note: Both errors will be logged as HFB-failure.
5.7.5Hardware Related Protections
Due to the architecture ("hot" deflection), some protections
cannot be sensed by the microprocessor. Three of these
protections will lead to a protection on set level (Standby mode
and blinking LED), while another will only lead to a circuit
protection.
TV-set Protection
The following fault conditions will lead to a "complete" set
protection:
•BRIDGECOIL protection: This is sensed via the "EW"
signal going to the base of TS7652 (via R3495 and D6499).
In a normal situation, the voltage on C2498 (diagram A4) is
high and TS7652 is conducting. When bridge coil 5422
(diagram A3) is short circuited, the voltage on C2498
changes to low, which will block TS7652. In this case, also
TS7641 will block and the voltage on 2642 will rise until
TS7443 is forced in conduction. The "SUP-ENABLE"
signal (in normal operating condition -20 V) is shorted now
to ground level, which will force the Main Power Supply to
Standby mode.
•ARC protection: If there are "open" connections (e.g. bad
solder joints) in the high-energy deflection circuitry, this can
lead to damaging effects (read: fire). For that reason, the E/
W current is sensed (via 3479//3480). If this current
becomes too high, the "thyristor" circuit (TS7653 and
TS7654) is triggered. TS7442 is switched "on" and TS7443
is forced into conduction. . The "SUP-ENABLE" signal is
shorted now to ground level, which will force the Main
Power Supply to Standby mode.
•NON_VFB (No vertical Flyback) protection: If the frame
stage generates no pulses, TS7641 will block. TS7443 is
now switched "on", which will lead to Standby mode.
Therefore, in normal operation condition, TS7641 and
TS7652 are conducting, while TS7443 is blocked.
Circuit Protection
The following fault condition will lead to a "partly" set protection:
•PROT1 (DC) protection: When a DC-voltage (positive or
negative) is sensed on one of the loudspeaker outputs, the
protection circuit (TS7704, 7705, 7706 and 7707 in
diagram A6) will put the IC7700 in Standby mode (via tristate input pin 6). For more details, see chapter "Circuit
Descriptions".
5.7.4 HOP Related Protections
Every 200 ms, the status register of the HOP is read by the
OTC (via the I
2
C bus). If a protection signal is detected on one
Service Modes, Error Codes, and Fault Finding
EN 19EM5.3A P/M AA5.
5.8Repair tips
5.8.1 Miscellaneous
The relay you hear when you switch the set "on" (from Standby
or via the mains switch), is from the degaussing circuitry. It is
not used for switching the Power Supply (as done in the MGchassis).
Take care not to touch the "hot" heatsink while disconnecting
the SSB, despite the fact that the mains cord is out of the mains
socket. There can still be an annoying rest-voltage on the
heatsink for a short while. This, because the discharge
resistors 3502 and 3503 (on the LSP between hot and cold
part) are not stuffed for Europe. Instead, discharge resistors
3066 and 3057 on the Mains Switch panel are used, but
because they are located before the Mains switch, they only
discharge when this switch is "on".
Advice: when you remove the SSB, disconnect the Mains
cord, but keep the Mains Switch "on".
Do not try to measure on the SSB side, which is facing the 'hot'
heatsink. This is dangerous. Most service test points are
guided to the 'tuner' side and are indicated by the 'service'
printing.
Where the circuitry was too "crowded" for service printing, you
can find the correct location on the "test point overviews" in this
manual.
A very large part of the LSP is "hot", such as:
•The primary part of the Standby Supply.
•The whole Main supply (except for the secondary Audio
supply).
•And the complete deflection circuitry (so notice that the
deflection coil is hot!).
5.8.2 Start-up Sequence
COLD
HOT
EHT-INFO
5
START/STOP
8V
17/39
STANDBY
low 7131/41 closed
high 7131/41 open
29
RESET
5V
CON
8V
CON
106105
POR
3
OTC
99104
I2C BUS
1
POR
7445
Figure 5-4 Start-up circuitry
The start up sequence differs from other sets (e.g. MG-sets or
EM2E-sets, but is same as in EM3E-set):
1. When the set is switched "on", the 5 and 8 V lines
("+5V_CON" and "+8V_CON") of the standby power
supply are activated.
2. After the OTC senses them, the P will address the HOP via
2
the I
C-bus, to start the drive [1].
3. Via the "SUP-ENABLE" signal, the Main Supply is switched
"on" and will deliver the V_BAT to the Line deflection stage
[2].
4. EHT generation is now started.
HOP
START/STOP
7141
7131
+11D
OUT
CUTOFF
(from
CRT panel)
5V
STBY
8V
SUPPLY
MAIN
SUPPLY
LINE DEFL.
(BRIDGECOIL
-PROT)
(ARC-PROT)
(NON-VFB)
Vbat
FRAME
DEFL
SUP-ENABLE
220 VAC
PROT-
SENSING
CL16532044_023.eps
2
140501
5. The OTC will un-blank the picture.
6. When you switch "off" the set, this is done in a controlled
way via the POR signal [3].
Note: Standby is not directly achieved via the Standby line of
the microprocessor, but indirectly via the HOP circuitry.
5.8.3ComPair
This chassis does not have an IR transmitting LED (as in MGsets). Therefore, a "Service" (ComPair) connector is
implemented at the rear side of the set, which is directly
accessible (as in A10-, EM2E-, EM3E and EM5E-sets). In
addition to this, there is also a blinking LED procedure to show
the contents of the error buffer.
When you use ComPair, you have the possibility to activate a
"stepwise start-up" mode. With this mode, you can initiate the
start-up sequence step by step. This also means that in certain
steps, some protections are not activated. This is sometimes
very convenient during repair.
5.8.4Protections
Activating SDM via the "service pads" will overrule the
processor-controlled protections, but not the hardware
protections. This means, that the A/D-input protections (5 and
8 V) and the I
2
C "not-acknowledging" info of the feature box
(FBX) and of the Tuner are overruled.
Caution: When doing this, the service technician must know
what he is doing, as it could lead to damaging the set.
The "ARC"- and/or "BRIDGECOIL" protection are hardly ever
triggered, however:
•When you suspect the "ARC" protection, look for bad
solder joints and smell. By interrupting resistor 3497, this
protection is disabled (special attention needed!).
•When you suspect the "BRIDGECOIL" protection, which
can also be due to a too wide picture amplitude, shorten G
and S of the E/W MOSFET 7480. This will disable the
protection. You will now have minimal horizontal amplitude.
Re-align the horizontal amplitude in the SAM menu and
remove the G/S short of TS7480.
5.8.5Main Supply
The simplest way is, to replace the components of the Main
Supply with repair kit 3122 785 90310.
More detailed way:
1. Replace FET 7504 and zener 6505.
2. Remove the SSB panel.
3. Short B and E of TS7529, in order to put the Main Supply
in "on"-mode (TS7529 is blocking then).
Caution: To prevent that R3403 and TS7443 will be
damaged, first disable the HW-protection of the deflection circuit. Therefore short circuit C2642 on the
LSP (diagram A4).
4. Attach a load of 500 O to V_BAT capacitor C2515 (the
supply can not work without a minimum load).
5. Use a variac, and slowly increase the V_MAINS. Measure
over sensing resistors R3514//15, if a nice sawtooth
voltage becomes available.
6. Also measure the V_BAT. This may never exceed +141 V.
If it does, there is something wrong in the feedback circuitry
(e.g. regulator 7506).
Note: Be careful when measuring on the gate of FET TS7504.
This circuitry is very high ohmic and can easily be damaged
(first connect ground to measuring equipment, than measure
the gate).
EN 20EM5.3A P/M AA5.
Service Modes, Error Codes, and Fault Finding
5.8.6 Standby Supply
The simplest way is to replace the components of the Standby
Supply with repair kit 3122 785 90460.
5.8.7 Line Deflection
The simplest way is to replace the components of the Line
Deflection circuitry with repair kit 3122 785 90330.
5.8.8 Frame Deflection
Caution: When the Frame Deflection circuitry is suspected,
one must be careful. Because there is a DC-voltage on the
frame deflection, the beam current could damage the CRT
neck, leading to a defective CRT.
Table 5-4 Repair Tips
PhenomenonPossible CauseRepair tip
No picture, no LED.Standby Supply defective.Measure circuitry (see diagram A2). Start at test-point A19.
No picture, no LED.Bad connection of SSB in SIMM-
No picture, LED blinking at 3 Hz. Set is in protection due to various
No picture, LED blinking with
code 6-6-6 or 18-18-18.
No picture, LED blinking with
code 1-1-1.
No picture, no sound. Set is
making audible squeaking sound
No picture, no sound. Power LED
works fine
No RC-reception. LED does not
echo RC-commands.
Relay (degaussing) is not
audible, when set is switched
from 'off' or 'standby' to 'on'.
Picture is rotated.Rotation circuitry on diagram A5, or
Picture is continuously switching
'off' and 'on', showing heavy
'switch' spots (set does not go
into protection).
Picture is not sharp.Focus is possibly mis-aligned or
Picture is not synchronised.The sync is derived in the HIP from
Picture is distorted.Check video-path in Service Default
No menu, no OSD.Probably a defective uP.Measure test points B61to B64 on diagram B5.
How to measure if soldering
connections of a BGA are OK
How to measure on other IC'sIt is advisable to measure both on the pins itself and the solder pads on the PWB. This to find
connector.
causes. For error codes see errorcode list.
No communication on slow I2C- or
fast I2C-bus.
No communication on NVM- I2C bus
to the uP.
Supply is possibly in hiccup-mode,
which is audible via a squeaking
supply transformer.
Supply does not work correctly.If e.g. V
uP circuitry or RC-receiver is
defective.
uP is not working correctly.When pin
115 is low, the degaussing must be
activated.
related supply to it, malfunctions.
200 V is missing on CRT panel.Probably a bad connection from LSP connector 1424 to CRT connector 1424 (diagram F), or an
SCAVEM-circuitry does not work
correctly.
x-tal 1305 and/or 1308.
Mode.
To prevent this from happening, you must:
1. Interrupt the resistors 3403 and 3404 on the CRT panel
(diagram F1), in order to remove the "filament" voltage
from the tube (no beam current, so no chance of destroying
the CRT).
2. Interrupt resistor 3403 on the LSP (diagram A4) to disable
the "SUP-ENABLE" line.
3. Measure with a multi-meter, or better with a oscilloscope,
the functionality of the Frame stage.
4. After you have found the cause, exchange the defective
component (e.g. TDA8177), and re-solder the interrupted
resistors.
When the Mains switch is 'on', this voltage must always be available
In case of a bad connection, it can happen that there is no picture, and that the Standby LED is not
controllable. Re-place the SSB.
You have no picture, so:
- Read the error buffer via ComPair (error buffer is accessible when set is in protection, comparefile will guide you to this)
- Read the blinking LED information via standard remote command <mute>06250X<ok>
- Or you read the error code sequence via standard remote command <mute>062500<ok>.
When you have found the error, check the circuitry related to the supply voltage and I2Ccommunication or the circuitry that triggers the protection.
As processor cannot communicate with one of the 2 busses it the standb y-led spontaneously starts
blinking 6-6-6... or 18-18-18... If in the error buffer somewhere is an error 6 or 18, these will have
the highest priority starting the mentioned blinking. Measure dependent of the error on the I2C-bus
which device is loading the bus. (Use I2C -overview)
As the uP cannot communicate with the NVM I2C bus, it spontaneously starts blinking 1-1-1. Note:
when there is no access to the NVM, a lot of picture setting can go wrong.
Possible causes:
- V
is shorted (caused by short circuited line transistor 7421), or
BAT
- Sound winding is shorted (amplifier is shortening the power supply lines), or
- D6514 is shorted (due to a too high V
Remove excessive load, to see what causes the failure, or check feedback circuit. See repair tip
'Main Power Supply' (supply needs a minimal load).
is only about 90 V, it is possible that the regulator IC (7506) is defective.
BAT
In case the set does react on a local keyboard operation, you must check the RC-receiver circuitry.
Check RESET-circuitry on diagram B5. Check the level on pin 115 when you switch the set 'on'.
Signal must be low initially and go to high after approx. 12 s.
Measure test points on diagram A5.
interruption of the 200 V supply line (e.g. R3341 on circuit F is interrupted).
Re-align the 'focus' potmeter on the Line Output Transformer, or check the SCAVEM circuitry on
the CRT-panel (diagram F). It is also possible that the DAF circuitry is defective (see diagram I).
Check the Vdc values.
Maybe the crystals 1305 and/or 1308 are making a bad contact.
Investigate whether there is an error code present in the error buffer. In case there is one, check
the I2C -bus and/or supply lines (see overview supply lines).
Measure and check signal path Tuner-HIP-PICNIC-HOP-RGB amplifier.In case it is a geometry
issue, check on diagram A4 opto-coupler 7482, Opamps 7440/7450 and the Frame circuitry
alignments or a possible corrupted NVM (7011) on diagram B5.
For most BGA's the pins/balls are ESD protected via diodes to ground, it is possible to measure
these diodes with a multi-meter. Overload means no or bad connection.
possible solder faults.
BAT
).
Block Diagrams, Testpoint Overviews, and Waveforms
6.Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
CENTRE
TOP CONTROL PANEL
P
TWEETER
BLUE
BLUE
RIGHT
SPEAKER
0346
3P
(COMPONENT VIEW)
CRT PANEL
F
1434
1P
1940
11P
CRT
SOCKET
SPEAKER
RED
BLACK
1435
BLACK
BLACK/
WHITE
1483
3P
1424
7P
8483
EN 21EM5.3A P/M AA6.
DEGAUSSING COIL
AQUADAG
SCAVEM
CRT
ROTATION
2P
COIL
CRT PANEL
FRAME
COIL
EHT
CRT
A (LOT)
3P
8000
TWEETER
LEFT
SPEAKER
BROWN
BROWN
SC
1955
3P
HD-JACK PANEL
N
1104
1680
8680
1440
11P
AUTO
SCAVEM
1940
11P
5P6P
CVBS (YELLOW)
LEFT (WHITE)
RIGHT (RED)
HEADPHONE
1304
7P
SVHS
O
1327
8440
8955
SIDE
I/O PANEL
1328
1326
8304
1936
11P
3P
B
SSB
(SMALL SIGNAL BOARD)
1304
7P
1681
LSP(LARGE SIGNAL PANEL)
A
1146
N.C.
5P
1947
N.C.
5P
1946
9P
1945
8346
8936
6P
1680
1000
80P
8937
1948
compair
interface
F
3P
2P
2P
8951
3P
8940
1943
3P
4P
0207
DW PANEL
(OPTIONAL)
TUNER
1937
1735
1951
10P
1955
1940
TUNER
4P
8946
5P
3P
11P
1620
3P
0236
3P
PAN E L
1205
80P
SSB
1936
1935
11P
0200
5P
1933
5P
1737
3P
1738
3P
3P
4P
1953
1499
0201
2P
8737
10P
8338
1693
5205
2P
1505
2P
1502
1417
1491
8417
2P
LOT
8424
8498
1625
3P3P3P
1424
7P
1498
2P
14921492
8625
5203
8492
HORIZONTAL
I
DAF PANEL
1417 1418
2P2P
1419
2P
1491
1497
1P
8418
8202
DC SHIFT
G
(OPTIONAL)
0317
2P
MAINS SWITCH PANEL
E
MAINS
SWITCH
02010202
2P2P3P9P
8190
MAINS
CORD
0241
(optional)
SUB
WOOFER
E_14600_061.eps
161204
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Supply and Deflection
EN 22EM5.3A P/M AA6.
SUPPLYDEFLECTION
220V
6525
GBU4K
4
-
GND-STB
HOT GROUND
MAINS SWITCH
E
PAN EL
0201
2
1
2
A1
1503
1
+
2.5A
+
3
2516
-20V
-20V
1031
or
1051
3
4
MAINS
SWITCH
V-START
+375V
5517
7504
STP5NB60FP
D
S
A3
3531
ACTIVATING
CIRCUIT
0202
1
2
A2
6109
G
A2
TCET1103
7529
2
1
STAND-BY SUPPLY
STARTUP
7100
7101
7105
7120
CONTROL
CIRCUIT
-20V
7502
7530
CONTROL
CIRCUIT
324
A4
7507
A5
7506
TL431CZP
MAIN SUPPLY
A1
0202
1501
2
T5A
1
51015109
7102
STP3NB60
A11
G
A12
3108 3118
A13
-20V
5102
2102
MAIN SUPPLY
1
3506
VBATT
1
3
2
ADJUSTMENT
3530
3510
3526
GND-SUPGND-STB
SUP-ENABLE
V
5113
3514
3507
3527
6103
3520
D
S
3509
A10
5104
GND-STB
5
4
3
2
1
5107
A15
A16
5
4
3
1
2515
5502
5503
5504
MAINS
FILTER
5100
7103 OR
7104
5506
HOT
5511
5516
COLD
A6
65
7
8
10
5103
1
2
3114
6
7
8
9
10
A8
3550
0+
3
1550
4
A7
RP
RS
A17
6113
5130
+
2512
+
2511
+VBATT
8+
5515
3537
DEGAUSSING
3115
3116
+8V6-SWITCH
7131
D
G
CONTROL
+5V-SWITCH
7141
D
G
CONTROL
7132
5514
2
+5.2V_MP
2118
S
7133
7130
S
7140
21
1
7501
7528
ACTIVATING
CIRCUIT
6110
5112
3161
6130
5111
6111
3113
6122
3124
65355507
550965365513
1502
3
2
1
HOT
COLD
B5
OTC
VTUN
+11V_STBY
A18
+11V
A20
+5.2V_MP
A21
STANDBY
+16V+19V
AUDIO SUPPLY
+
2542
GND-AUD
+
2543
-16V-19V
AUDIO SUPPLY
A19
2126
B5
OTC
A8
+8V6
+5.2V
+5V
+8V6
COLD
HOT
DEG.
COIL
LINE DEFLECTION
A3
+VBATT
HOT
COLD
+11D
+5.2V
LINEDRIVE 1
B4
HOP
FRAME DEFLECTION
A4
E/W DRIVE
EW-DRIVE 1
B4
HOP
+8V6
3455
3456
HFB_X-RAY-PROT
B4
HOP
FRAMEDRIVE +
B4
HOP
B4
HOP
FRAMEDRIVE -
COLD
HOT
3660
7611
CURRENT
SOURCE
5
6
3404
3459
A33
A34
3658
+8V6
3640
+
6456
A37
2403
7440-B
7
3419
7440-A
3
2
A35
3657
6627 6626 6625
3631
7612
3457
7441
7455
1
3642
A39
5
6
+8Vb
3632
6408
6407
341434062492
3654
7450-B
3
2
3415
3416
A22
7409
A23
3404
1693
6615
7
A38
FRAME DEFLECTION
2457
+8Vb
7614
7450-A
1
A36
TV
3638
3643
3630
3634
DC-SHIFT
G
A24
7408
COLD HOT
E/W - DRIVE
TO 1693
I
DAF
1
2
1
5
3641
+13V-LOT
7620
TDA8177
7
1
A40
5400
5410
5621
3623
DC-
SHIFT
CIRCUIT
A25
94
61
7482
7487
6
10
6620
OP. AMP
-15V-LOT
SUP-ENABLE
5
4
(OPTIONAL)
1430
400 mA
+141V
5401
5426
A26
7421
BU2520DX
+8V-S+141V
3492
3484
A45
7442, 7654
7653
PROTECTION
CIRCUIT
7641
7443
7652
PROTECTION
CIRCUIT
2622
+
62
FLYBACK
GENERATOR
THERMAL
PROTECTION
4
3493
EW
ARC-PROT
7486
6622
3
3488
3481
3483
A42
5
6491
A43
A44
OUTPUT
CIRCUIT
A46
5620
3620
317
or
318
1
2
LINE
+
EW
CORR.
7480
STP3NB60
G
3479
6499
SUP-ENABLE
-15V_LOT
3647
3627
6619
1625
1419
1
2
1417
1
2
TO
A4
E/W
DRIVE
A28
2443
5461
A30
1
1
+11D
7445
A31
A32
1497
1693
1492
1
FILAMENT
6460
2462
2464
34993498
5
8
5430
LOT
5
1
2430
5421
EW
6480
5467
A47
D
S
A48
3480
EW
1
2
3
VERT.
DEFL.
COIL
3431
2431
3
4
6
HOT COLD
+13V-LOT
3635
A50
1
7613
TL431
A5
OTC
B5
TILT
3636
3
3637
2
+11D+8Vb
ROTATING CIRCUITRY
+11V_ROT
3686
7681
7682
SWITCH OFF
CIRCUIT
IN STAND-BY
5463
5465
3449
EHT
FOCUS A
FOCUS B
VG2
10
8
11
9
12
125mA
3450 3451
3400
3463
3462
3465
3464
A49
1601
3685
DYNAMIC FOCUS
TO
F1
CRT
+11D
6400
3454
FILAMENT
3460
3461
6463
6462
6465
6464
+8V-S
7680
TDA7052
2
3
3684
6080
EHT-INFO
1
+Vp
6
DAF
I
5800
HOR. DAF
CIRCUIT
+11D
VER. DAF
CIRCUIT
3
2
FILA-
MENT
HFB_X-RAY-PROT.
EHT-INFO
A8
TUNER, SIM
A29
+11D
PORPOR
POR
FLASH
+13V - LOT
-15V - LOT
+13V LOT
-12V8
1620
1
ROTATION
2
DEFLECTION
3
COIL
E_14600_062.eps
1491
1
PULSES
11V
B4
HOP
A6
AUDI O
B5
OTC
161204
1418
HOT
COLD
1424
COLD
HOT
1495
HOT
COLD
1
2
1
2
3
4
5
6
7
1
2
3
4
LINE
DEFLECTION
COIL
TO
1224
F
CRT
TO
PAN E L
ON
CRT
NECK
Block Diagrams, Testpoint Overviews, and Waveforms