Philips EM5E AA Service Manual
Colour Television Chassis
EM5E
AA
CL 26532041_000.eps
220402
Contents Page Contents Page
1. Technical Specifications, Connections and
Chassis Overview 2
2. Safety & Maintenance Instructions, Warnings and
Notes 5
3. Directions for Use 7
4. Mechanical Instructions 21
5. Service Modes, Error Codes and Faultfinding 25
6. Block Diagram, Testpoints, and Overviews
Wiring Diagram 37
Block Diagram Supply and Deflection 38
Block Diagram Video 39
Block Diagram Audio 1 (Excl Wireless Audio) 40
Block Diagram Audio 2 (Wireless Audio) 41
2
C-IC Overview 42
I
Supply Lines Overview 43
Testpoint Overview LSP & CRT/Auto SCAVEM 44
Testpoint Overview SSB 45
7. Electrical Diagrams and PWB’s Diagram PWB
Main Supply (Diagram A1) 46
Stand-by Supply (Diagram A2) 47 55-60
Line Deflection (Diagram A3) 48 55-60
Frame Deflection & E/W Drive (Diagram A4) 49 55-60
Rotation Circuitry (Diagram A5) 50 55-60
Audio Amplifier (Diagram A6) 51 55-60
Tuner SIMM connector (Female) (Diagram A8) 52 55-60
Receiver (Diagram A9) 53 55-60
Front (Diagram A10) 53 55-60
Inputs/Outputs (Diagram A11) 54 55-60
SIMM connector (Male) (Diagram B1) 61 71-80
IF, I/O Videoprocessing (Diagram B2) 62 71-80
PICNIC (Diagram B3A) 63 71-80
Diversity Tables SSB 64 71-80
Falconic (Diagram B3B) 65 71-80
Eagle (Diagram B3C)66 71-80
©
Copyright 2002 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.
55-60
HOP (Diagram B4) 67 71-80
OTC (Diagram B5) 68 71-80
Audio Demodulator (Diagram B6) 69 71-80
Anti Moiré (Diagram B9) 70 71-80
Headphone Amplifier (Diagram B10) 70 71-80
Mains Switch Panel (Diagram E) 81 82
CRT (Diagram F1) 83 85-86
CRT/Auto Scavem Panel (Diagram F2) 84 85-86
DC Shift Panel (Diagram G) 87 87
I/O 3rd SCART Panel (Diagram H) 88 89
VDAF + 2nd Orders Panel (Diagram I) 90 91
Side I/O Panel (Diagram O) 92 93
Top Control (Diagram P) 94 94
Auto SCAVEM (Diagram SC1) 95 96
8. Alignments 97
9. Circuit Description 104
Abbreviation List 124
IC Data Sheets 126
10 Spare Parts List 127
Published by WO 0264 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 12560
EN 2 EM5E1.
Technical Specifications, Connections and Chassis Overview
1. Technical Specifications, Connections and Chassis Overview
1.1 Technical Specifications
1.1.1 Vision
Display type : CRT, Real Flat WS
Screen size : 28” (70 cm)
: 32" (82 cm)
:36” (92 cm)
Tuning system : PLL
Colour systems : PAL: B/G, D/K, I
: SECAM: B/G, D/K,
L/L’
: NTSC: playback only
Channel selections : 100 presets
:UVSH
Aerial input : 75 Ω, IEC-type
1.1.2 Sound
Sound systems : FM-mono, AM-mono
: FM-stereo: B/G,
Czech
: NICAM: B/G, D/K, I, L
Maximum power : 4 x 15 W
1.1.3 Miscellaneous
Mains voltage : 220 - 240 V
Mains frequency : 50 / 60 Hz
Ambient temperature : +5 to +45 deg. C
Maximum humidity : 90 % R.H.
Power consumption :
Normal operation : ≈ 130 W
Standby : < 1 W
rms
(int.)
1.2.2 Rear Connections
AUDIO OUT
SERVICE
CONNECTOR
Figure 1-2 Rear View
Aerial - In
- IEC-type Coax, 75 Ω )
Cinch: Audio - Out
- Audio - R 0.5 V
- Audio - L 0.5 V
rms
rms
External 1: RGB/YUV and CVBS - In/Out
121
CL96532137_056.eps
SURR.
EXT3
EXT1
SURR.
L
R
EXT2
CL 26532041_071.eps
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/ 1 kΩ
/ 1 kΩ
202
171199
1.2 Connections
1.2.1 Front View / Side Connections
IR-RECEIVER
STANDBY LED
SK 1LIGHT SENSOR
Figure 1-1 Front View and Side I/O
Hosiden: SVHS - In
1 - Y Ground ,
2 - C Ground ,
3-Y 1 V
4 - C 0.3 V
/ 75 Ω
pp
/ 75 Ω
pp
Cinch: In
1-CVBS 1 V
2 - Audio - L 0.5 V
3 - Audio - R 0.5 V
/ 75 Ω
pp
/ 10 kΩ
rms
/ 10 kΩ
rms
Mini Jack: Headphone - Out
- Headphone 32 - 600 Ω / 10 mW
SVHS
VIDEO
CL 26532041_070.eps
AUDIO R
AUDIO L
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Figure 1-3 SCART connector
1 - Audio - R 0.5 V
2 - Audio - R 0.5 V
3 - Audio - L 0.5 V
/ 1 kΩ
rms
/ 10 kΩ
rms
/ 1 kΩ
rms
4 - Audio Ground ,
3.5
5 - Audio Ground ,
6 - Audio - L 0.5 V
7 - Blue / U 0.7 V
8 - CVBS-status 0 - 1.3 V: INT
/ 10 kΩ
rms
/ 75 Ω
pp
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3
9 - Video Ground ,
10 -
11 - Green / Y 0.7 V
12 -
/ 75 Ω
pp
13 - Video Ground ,
14 - Video Ground ,
15 - Red / V 0.7 V
/ 75 Ω
pp
16 - Status / FBL 0 - 0.4 V: INT
1 - 3 V: EXT / 75 Ω
17 - Video Ground ,
18 - Video Ground ,
19 - CVBS-out 1 V
20 - CVBS-in 1 V
/ 75 Ω
pp
/ 75 Ω
pp
21 - Shielding Ground ,
Technical Specifications, Connections and Chassis Overview
EN 3EM5E 1.
External 2: CVBS and SVHS - In (for VCR)
121
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202
171199
Figure 1-4 SCART connector
1 - Audio - R 0.5 V
2 - Audio - R 0.5 V
3 - Audio - L 0.5 V
/ 1 kΩ
rms
/ 10 kΩ
rms
/ 1 kΩ
rms
4 - Audio Ground ,
5 - Audio Ground ,
6 - Audio - L 0.5 V
7 - C-out 0.7 V
8 - CVBS-Status 0 - 1.3 V: INT
/ 10 kΩ
rms
/ 75 Ω
pp
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3
9 - Video Ground ,
10 - Easy Link (P50)
11 -
12 -
13 - Video Ground ,
14 - Video Ground ,
15 - C-in 0.7 V
/ 75 Ω
pp
16 -
17 - Video Ground ,
18 - Video Ground ,
19 - CVBS-out 1 V
20 - Y / CVBS-in 1 V
21 - Shielding Ground ,
/ 75 Ω
pp
/ 75 Ω
pp
RJ45: Wireless Surround Transmitter - Out
1 - SDA2_TM Signal
2 - SCL2_TM Signal
3 - GND Ground ,
2
C_MUTE Signal
4-I
5 - 15V Supply
6 - AUDIO_SL_
S_TM Signal
7 - GND_AUD Ground ,
8 - PILOT_MUTE Signal
Jack: Surround - Out
1 - Audio 0.2 - 2 V
/ 10 kΩ
rms
External 3: RGB and CVBS - In
121
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202
171199
Figure 1-5 SCART connector
1 - Audio - R 0.5 V
2 - Audio - R 0.5 V
3 - Audio - L 0.5 V
4 - Audio Ground ,
/ 1 kΩ
rms
/ 10 kΩ
rms
/ 1 kΩ
rms
5 - Audio Ground ,
6 - Audio - L 0.5 V
7 - Blue-in 0.7 V
/ 10 kΩ
rms
/ 75 Ω
pp
8 - CVBS-status 0 - 1.3 V: INT
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3
9 - Video Ground ,
10 -
11 - Green-in 0.7 V
/ 75 Ω
pp
12 -
13 - Video Ground ,
14 - Video Ground ,
15 - Red-in 0.7 V
/ 75 Ω
pp
16 - Status / FBL 0 - 0.4 V: INT
1 - 3 V: EXT / 75 Ω
17 - Video Ground ,
18 - Video Ground ,
19 -
20 - CVBS-in 1 V
/ 75 Ω
pp
21 - Shielding Ground ,
EN 4 EM5E1.
1.3 Chassis Overview
Technical Specifications, Connections and Chassis Overview
CRT PANEL
F
SIDE I/O PANEL
O
SMALL SIGNAL BOARD
B
AUTO-SCAVEM
SC
I/O 3rd SCART
H
TOP CONTROL PANEL
MAINSWITCH PANEL
LARGE SIGNAL PANEL
DC-SHIFT (optional)
DAF PANEL
P
P
E
A
G
I
Figure 1-6 PWB location
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Safety and Maintenance Instructions, Warnings, and Notes
2. Safety and Maintenance Instructions, Warnings, and Notes
EN 5EM5E 2.
2.1 Safety 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
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 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.
2.2 Maintenance 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.
• 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.
,
2.3 Warnings
• 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 VDC). 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, symbol 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.
2.4 Notes
• Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (,), or hot ground (-), 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 (PAL) or 61.25 MHz (NTSC, channel 3).
• Where necessary, measure the waveforms and voltages
with ()) and without (*) aerial signal. Measure the
voltages in the power supply section both in normal
operation (+) and in standby (/). 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.
CL96532156_040.eps
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EN 6 EM5E2.
• 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.
Figure 2-2 Dolby PL Symbol
Safety and Maintenance Instructions, Warnings, and Notes
3. Directions for Use
Directions for Use
EN 7EM5E 3.
EN 8 EM5E3.
Directions for Use
Directions for Use
EN 9EM5E 3.
EN 10 EM5E3.
Directions for Use
Directions for Use
EN 11EM5E 3.
EN 12 EM5E3.
Directions for Use
Directions for Use
EN 13EM5E 3.
EN 14 EM5E3.
Directions for Use
Directions for Use
EN 15EM5E 3.
EN 16 EM5E3.
Directions for Use
Directions for Use
EN 17EM5E 3.
EN 18 EM5E3.
Directions for Use
Directions for Use
EN 19EM5E 3.
EN 20 EM5E3.
Directions for Use
4. Mechanical Instructions
Mechanical Instructions
EN 21EM5E 4.
Index of this chapter:
1. Service connector
2. Set Disassembly
3. Service Positions
4. Assy / Board Removal
5. Set Reassembly
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
4.1 Service Connector (for ComPair)
For service diagnostics with ComPair, it is not necessary to
disassemble the set. You only have to connect the ComPair
interface box, via the appropriate cable, to the service
connector (on the rear of the set, see figure below), and start
the program (see also chapter 5).
4.2 Set Disassembly
Follow the disassemble instructions in described order.
4.2.1 Wireless Surround Transmitter Removal (if attached)
1. Remove the cable of the Wireless Surround Transmitter
box (at the right side of this RJ45 plug you can find the
release-hook of the lock-mechanism).
2. Pull the Wireless Surround Transmitter box backwards. It
is clicked to the rear cover via three clamps.
4.2.3 Sub-woofer Removal
Caution: Do not disconnect the loudspeaker cable from the
subwoofer box when the set is operative, because the class-D
amplifier cannot handle a change in load during operation.
It is no problem when the subwoofer is disconnected before
operation, but a change from connected to disconnected
during operation can damage the amplifier.
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 sub-woofer box upwards, and remove it.
4.3 Service Positions
This chassis has several predefined service positions, for
better accessibility. They are explained below in more detail.
4.3.1 Solder Side ‘3rd SCART’ panel
2
1
4
4
4.2.2 Rear Cover Removal
3
11
1
3
2
Service connector
Figure 4-1 Rear view
Warning: disconnect the mains power cord before you remove
the rear cover.
First, remove the top cover (= plate with 'saucer'):
1. Remove the three fixation screws [1] that hold the cover
plate.
2. Pull the cover (horizontally) backwards.
To be able to access the electronics of the set, you must
remove the rear cover:
1. Remove the fixation screws [2] of the rear I/O cover plate.
2. Remove the remaining fixation screws [3] at the two sides,
and the top of the rear cover.
3. Now remove the rear cover. Make sure that wires and
cables are not damaged during cover removal.
CL 26532041_064.eps
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3
1680
CL 16532044_010.eps
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Figure 4-2 Service position 1
To remove or access the ‘3rd SCART’ panel, do the following:
1. Remove fixation screw [1].
3
2. To release the fixation peg, push it towards 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, disconnect the flat-cable from
connector 1680 and remove the four panel screws [4].
EN 22 EM5E4.
Mechanical Instructions
4.3.2 Component Side LSP
SSB top-bracket
SSB
AUTO-SCAVEM
bracket
CONNECTOR SUPPORT
bracket
Bottom tray
2
LOT - bracket
LSP
1
1
2
Figure 4-3 Service position 2
For better accessibility of the LSP, do the following (see figure
above):
1. Remove the LSP-bracket from the bottom tray by pulling it
backwards.
2. Hook the bracket in the first row of fixation holes of the
bottom tray. In other words, reposition the bracket from [1]
to [2].
CL 26532041_065.eps
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To get access to the bottom side (solder side) of the LSP, do
the following (see figure above):
1. Remove the DAF-module (see paragraph ‘DAF Assy/
panel’ below
2. To disconnect the degaussing coil from the LSP, remove
the cable from connector 1502 [1].
3. Release the wiring from their fixation clamps, in order to get
room for repositioning the LSP.
4. Flip the LSP 90 degrees clockwise [2], and place it in the
fixation hole at the left side of the bottom tray [3].
4.3.4 Small Signal Board (SSB)
In fact, there is no predefined service position for the SSB. Most
test points are located on the A-side (side that is facing the
tuner). If you have to replace ICs, you must take the complete
SSB module out of the SIMM-connector.
Note: For good access to the A-side, it is necessary to remove
the Auto-Scavem assy (at the left side of the SSB). See
description in paragraph 'Auto-Scavem Assy/Panel' below.
To get access to the SSB test points, do the following:
1
2
4.3.3 Solder Side LSP
2
1
1502
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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 at the
LOT side).
3. Now you can remove the complete SSB bracket.
3
Figure 4-4 Service position 3
CL 26532041_066.eps
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1
SSB
Mechanical Instructions
EN 23EM5E 4.
4.4 Assy / Board Removal
3
Sometimes, it can be necessary to swap a complete assy or
Printed Wiring Board (PWB). How that can be done is
explained below.
4.4.1 Top Control Assy/Panel
2
2
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Figure 4-6 SSB removal (part 2)
1. Push the top of the SSB towards 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].
SAM
SDM
Top control board
Figure 4-8 Top control assy
1. Release both fixation screws about 5 full turns.
2. Pull the complete assy back- and upwards (it hinges in the
cabinet front).
3. Flip the assy, and you can access the board by releasing
(carefully) the four fixation clamps.
4.4.2 Side-I/O Assy and Panel
3
2
2
1
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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 soldertags first [1].
2. Now re-place 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' under number 9965 000 05769.
• If necessary for the measurement, you can put the LSP in
'service position 2' (as described above).
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Figure 4-9 Side I/O assy
1. Release the snap-hook [1] with your finger.
2. At the same time, pull the assy backwards [2].
3. Release the two fixation clamps on the right side of the
bracket (the board hinges at the left side).
4. Remove the board from the bracket.
4.4.3 Mains Switch Assy/Panel
1
1
2
Figure 4-10 Mains Switch Assy
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EN 24 EM5E4.
Mechanical Instructions
1. Release the two fixation clamps (rather difficult to reach),
by pushing them upwards [1]. At the same time, pull the
complete assy backwards [2].
Note: be aware that the degaussing coil can hamper this.
2. Release the two fixation clamps on the two sides of the
bracket (the board hinges at the connector side).
3. Remove the board from the bracket.
4. When the light guide (sitting in the cabinet, in front of the
LEDs) is defective, you can replace it by pushing it
forwards at the left side (it hinges at the right side, seen
from the rear).
4.4.4 DAF Assy/Panel
1
2
4
4
3
3
CL 16532044_011.eps
4.5 Set Reassembly
To reassemble the whole set, do all processes in reverse order.
Be sure that, before the rear cover is mounted:
• The mains cord is mounted correctly in its guiding brackets.
• All wires/cables are returned in their original positions. This
is very important due to the large 'hot' area of the set
150501
Figure 4-11 DAF-module
1. Remove the fixation screw [1] (if present).
2. Push down the fixation clamp [2], and pull the complete
bracket at the same time away from the CRT [3]. The
module is now free from the LSP-bracket.
3. Release the fixation clamps [4], in order to remove the print
from its bracket.
4.4.5 Auto-SCAVEM Assy/Panel
This panel is placed on the left side of the SSB (See figure
’Service position 2‘). Because most of its components are
placed on the bottom side, you must lift the panel from its
bracket before you can measure it.
1. Therefore, release the two fixation 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. Then, remove the two fixation screws at the bottom.
3. Lift the Auto-Scavem bracket slightly up, and at the same
time bend the top a little away from the tuner.
4. Now, push the bracket into the direction of the CRT, and lift
it out of the LSP-bracket.
4.4.6 Small Signal Board (SSB)
See paragraph 'Small Signal Board (SSB)' above.
4.4.7 Large Signal Panel (LSP)
1. Remove the SSB (see paragraph 'Small Signal Board
(SSB)' above).
2. Remove the Auto-Scavem assy (see paragraph 'Auto
Scavem Assy/Panel' above).
3. Disconnect the necessary cables.
4. Release the fixation clamps on the left of the LSP-bracket
(the board hinges at the right side).
5. Remove the board from the bracket.
Service Modes, Error Codes and Fault Finding
5. Service Modes, Error Codes and Fault Finding
EN 25EM5E 5.
Index of this chapter:
1. Test points
2. Service Modes
3. Problems and solving tips (related to CSM)
4. ComPair
5. Error Codes
6. The blinking LED procedure
7. Protections
8. Repair tips
5.1 Test Points
The chassis is equipped with test points printed on the circuit
board assemblies. They refer to the 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:
• Service Default Mode.
• Video: colour bar signal.
• Audio: 3 kHz left, 1 kHz right.
5.2 Service Modes
Service Default Mode (SDM) and Service Alignment Mode
(SAM) offer several features for the service technician, while
the Customer Service Mode (CSM) is used for communication
between 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 5.4).
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.
• Colour system: SECAM L for France or PAL B/G for the
rest of Europe.
• 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. Cau tion : If the
SDM is entered via the pins, all the software-controlled
protections are de-activated.
• Use 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 on the DST.
• Via a standard customer RC-transmitter: key in '00'-
sequence.
5.2.2 Service Alignment Mode (SAM)
Purpose
• To perform (software) alignments.
• To change option settings.
• To easily identify the used software version.
• To view operational 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
• Short for a moment the two solder pads on the 'external
part' of the SSB print, with the indication SAM.
• 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:
• Rom Version. Displays the date of the software and the
software version of the ROM
(example: EM5EU1-1.0_01234= AAABBC-X.Y_NNNNN).
– AAA= the chassis name (EM5).
– BB= the region: EU= Europe, AP= Asia Pacific PAL/
Multi, AN= Asia Pacific NTSC, US= USA, LT= LATAM.
– C= the language cluster number.
– 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.
EN 26 EM5E5.
Service Modes, Error Codes and Fault Finding
• Operation Hours. Displays the accumulated total of
operation hours (not the standby hours).
• Errors (followed by maximal 10 errors). The most recent
error is displayed at the upper left (for an error explanation
see paragraph 5.5).
• Defect. 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' sub-menu.
• 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 also not correct. So,
this was a very drastic way.
In the EM5 chassis, the procedure is implemented in
another way: The moment the processor recognises a
corrupted NVM, an extra line will be added to the SAM
menu: 'Initialise NVM'.
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 Options. All options 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.
• Broadcast 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 related to Time
extraction, CNI codes, and NexTView transmission.
Following items are displayed:
– Preset. Shows the preset number.
– Local. Local date and time from the selected preset.
– UTC (Coordinated Universal Time). Extracted from the
selected preset.
– LTO (Local Time Offset). Extracted from the selected
preset.
– CNI (Country and Network Identification). Extracted
from the current preset (displayed as a four digit
hexadecimal number. The CNI number identifies the
broadcaster.
– NexTView service (optional). This item gives
information about the type of NexTView service that is
available for the current preset. The possible strings
are:
1. NexTView provider.
2. NexTView data available from preset xx (where xx
is the preset number).
3. No NexTView data available.
– CNI Linking (optional). 'Link' refers to the connection
between the broadcasted NexTView programme
information and the preset number. The possible
strings are:
1. Data available for preset xx xx xx (where xx xx xx
is a list off all presets for which a CNI link is
available).
2. 'Automatic link' or ' Manual link', depending on
what is read from the broadcast and from the CNI
table in the NVM. 'Automatic' means that the link
has been made based on broadcasted information,
without user-interaction. 'Manual' means that the
user has established this link by selecting a preset
in the pop-up menu that you get after setting a
reminder/recording/lock/watch in EPG. Erase a
wrong 'Manual link' by entering the Manual
Installation menu and (without changing anything)
activate 'Store'.
3. Nothing is shown.
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.
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: EM5EU1-1.0_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 last 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 3digit number. When less than 10 errors occur, the rest of
Service Modes, Error Codes and Fault Finding
EN 27EM5E 5.
the buffer is empty ('000'). See also paragraph 5.5 for a
description.
• Code 2. Gives the first 5 errors of the error buffer. See also
paragraph 5.5 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 NTSC-
DVD-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'.
• Dolby. Indicates whether the received transmitter
transmits Dolby sound ('ON') or not ('OFF'). Attention: The
presence of Dolby can only be tested by the software on
the Dolby Signalling bit. If a Dolby transmission is received
without a Dolby Signalling bit, this indicator will show 'OFF'
even though a Dolby transmission is received.
• 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', '3D
Surround', 'Dolby Pro Logic', 'Dolby Digital', 'Hall' or 'MPEG
Multi-channel'. These settings can be influenced after
pressing the 'MENU' button and selecting 'SOUND' and
'SOUND 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'.
• Front L Trim. Indicates the difference between main
volume and volume of front left speaker. Change via:
'MENU', 'SETUP', 'SPEAKERS', and 'FRONT LEFT
VOLUME'. The value can vary from '-10' to '+10'
• Front R Trim. Indicates the difference between main
volume and volume of front right speaker. Change via:
'MENU', 'SETUP', 'SPEAKERS', and 'FRONT RIGHT
VOLUME'. The value can vary from '-10' to '+10'
• 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: SECAM L signals received.
– M38.9: 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
(average signal) and to 255 (bad signal).
• Source. Indicates which source is used and the signal
quality of the selected source. Source: 'TUNER', 'EXT1',
'EXT2', 'EXT3', 'EXT4', or 'SIDE'. Signal Quality: 'VIDEO/
STEREO', 'VIDEO/NICAM', 'VIDEO/SPDIF', 'S-VIDEO/
STEREO', 'S-VIDEO/NICAM', 'S-VIDEO/SPDIF', 'RGB/
STEREO', 'RGB/SPDIF', '480P/STEREO', '576P/
STEREO' or '1080i/STEREO'.
• 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 'Off'. When you change
this (automatically found) frequency via 'fine tune'
adjustment (installation menu - manual installation), the
displayed value will change to 'On'. Therefore, when you
see the value 'On' 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 set 'ON' or 'OFF'. 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'
EN 28 EM5E5.
Service Modes, Error Codes and Fault Finding
• 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'.
• SW Code 1. Not applicable.
• SW Code 2. Not applicable.
• TV Ratings Lock. Only applicable for US.
• Movie Ratings Lock. Only applicable for US.
• V-chip TV Status. Only applicable for US.
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).
SW Event-log
This item contains 'software event logging' information that can
be delivered to the development centre on special request.
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.
5.3 Problems and Solving Tips (related to CSM)
White line around picture elements and text
1. Press 'Smart Picture' button on the Remote Control. In
case the picture improves, decrease the 'Sharpness' value.
The new value is automatically stored (in 'personal' preset) 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 'On', install the
required program again. Open the installation menu and
perform manual installation.
Blue picture
1. No proper signal is received. Check the aerial cable/aerial
system.
Blue picture and/or unstable picture
1. 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.
No colours/colour lines around picture elements or colours not correct or unstable picture
1. Check line 20 'TV System'. If a 'strange' system pop's up,
something has gone wrong during installation. Re-install
the channel.
2. In case line 20 is 'L', the installed system for this pre-set is
'France', while 'West Europe' is required. Install the
required program again: open the installation menu and
perform manual installation. Select system 'West Europe'.
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.
5.3.1 Picture 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.
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 'Smart Picture' button on the RC-transmitter. 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 'Smart Picture' button on the RC-transmitter. 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 6 '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.
Menu text not sharp enough
1. Press 'Smart Picture' button on the RC-transmitter. 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
'LS Volume'. The new value(s) are automatically stored (in
'personal' pre-set) for all TV channels.
5.4 ComPair
5.4.1 Introduction
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
• ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.
• ComPair allows very detailed diagnostics (on I
is therefore capable of accurately indicating problem areas.
You do not have to know anything about I
yourself because ComPair takes care of this.
2
C level) and
2
C commands
Service Modes, Error Codes and Fault Finding
EN 29EM5E 5.
• 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.
5.4.2 Specifications
ComPair consists of a Windows based faultfinding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
or RS232 cable.
In case of the EM5E 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
Table 5-1 Stepwise start-up table
State Description mode Display LED
(Red)
0 Low power stdby:
On None
Enabled protection
5V2/3V3 present, uP in
stdby-mode
1 High power Stdby:
TV-set in stdby-mode
2 SSB is powered by std-
by-supply (5V/8V).
Wait 1s, flash
1 x
Wait 1s, flash
2 x
None
1, 4, 5, 6 & 18
Degaussing (12 s) has
been activated.
3 Semi stdby-mode:
HIP, HOP, MSP and
Wait 1s, flash
3 x
Tuner initialized leading to semi stdbymode.
4 All ICs are initialized,
HOP activates the
Wait 1s, flash
4 x
Plus 2 & 16
main supply, EHT-generation starts, black
current stabilization is
on
5TV On:
TV-set operates, un-
Wait 1s, flash
5 x
blanked picture.
Stepwise shut-down explanation
In the stepwise shutdown mode, state 2 and 4 are skipped.
Table 5-2 Stepwise shut-down table
State Description mode Display LED
(Red) (*)
5TV On:
TV-set operates, un-
Wait 1s,
flash 5 x
Disabled
protections
-
blanked picture
3 Semi stdby-mode:
SSB is powered by the
Wait 1s,
flash 3 x
2 & 16
stdby-supply
1 High power stdby:
TV-set in stdby-mode
0 Low power stdby:
Wait 1s,
flash 1 x
On
1, 4, 5, 6 & 18
5V2/3V3 present,
uP in stdbymode
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 stepwisemode however. By stepping up, the set can be activated again,
until state X where the protection was activated. At state (X-1)
diagnostic measurements can be performed.
5.4.3 Stepwise Start-up / Shut-down
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 start-up
routine (hence which circuitry) is causing the problem.
Stepwise start- up explanation
This is realised via ComPair and is very helpful when a
protection is activated (see also chapter 5.7).
5.4.4 How To Connect
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 'I
2
C') and the ComPair connector at the rear
side of the TV (situated just below the tuner input, see also
chapter 4).
EN 30 EM5E5.
Service Modes, Error Codes and Fault Finding
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.
EXTERNAL 2
L
R
AUDIO EXTERNAL 1
SERVICE
CONNECTOR
PC VCR I2CPower
9V DC
Figure 5-1 ComPair Interface connection
5.4.5 How To Order
ComPair order codes:
• Starter kit ComPair32/SearchMan32 software and
ComPair interface (excl. transformer): 3122 785 90450.
• ComPair interface (excluding transformer): 4822 727
21631.
• Starter kit ComPair32 software (registration version): 3122
785 60040.
• Starter kit SearchMan32 software: 3122 785 60050.
• ComPair32 CD (update): 3122 785 60070.
• SearchMan32 CD (update): 3122 785 60080.
• ComPair interface cable: 3122 785 90004.
CL96532156_029.eps
190600
5.5.3 How 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
C device errors.
• I
2
C bus errors.
• I
• Protection errors.
• Errors not related to I
2
C device, but of importance:
– Black Current Loop Error (error 28): detection of a
continuous fail of the black current stabilisation loop of
the HOP.
– FALCONIC Error (error 26): at start-up, after
initialisation of the PICNIC, the presence of the
FALCONIC can be checked.
– Eagle Error (error 27): at start-up, after initialisation of
the PICNIC, the presence of the Eagle can be
checked.
5.5 Error Codes
5.5.1 Introduction
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.
5.5.2 How 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.
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