Philips L05L AA Service Manual

Colour Television Chassis

L05L

AA

FAMI LY,
OR
MULTI BOARD

F_15050_000.eps

210205

Contents Page Contents Page

1. Technical Specifications, Connections, and Chassis
Overview 2

2. Safety Instructions, Warnings, and Notes 4

3. Directions for Use 6

4. Mechanical Instructions 7

5. Service Modes, Error Codes, and Fault Finding 10

6. Block Diagrams, Testpoint Overviews, and

Waveforms

Wiring Diagram 21
Block Diagram Supply and Deflection 22
Testpoint Overview Mono Carrier 23
Block Diagram Video 24
Testpoint Overview CRT Panel (Family Board) 25
Testpoint Overview HDMI Panel 26
Block Diagram Audio 24
Block Diagram Control & I2C Overview 28
Supply Lines Overview 29

7. Circuit Diagrams and PWB Layouts Diagram PWB
Mono Carrier: Power Supply (A1) 30 41-46
Mono Carrier: Deflection (A2) 31 41-46
Mono Carrier: Tuner IF (A3) 33 41-46
Mono Carrier: Hercules (A4) 34 41-46
Mono Carrier: Features & Connectivities (A5) 35 41-46
Mono Carrier: Front Control (A7) 36 41-46
Mono Carrier: Rear I/O Cinch (A8) 38 41-46
Mono Carrier: Front Control (A9) 39 41-46
Mono Carrier: AUX Power Supply (A10) 40 41-46
CRT Panel (Family Board) (B1) 47 49-50
CRT Panel: Eco Scavem (Family Board) (B2) 48 49-50
CRT Panel (Multi Board) (B1) 51 54
CRT Panel: RGB Amplifier (Multi Board) (B2) 52 54
CRT Panel: Rot. & SCAVEM (Multi Board) (B3) 53 54
Side AV + HP Panel (PV0-2) (D) 55 56
Side AV + HP Panel (FL13) (D) 57 58

©

Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.

Top Control Panel (PV0) (E) 59 60
Top Control Panel (PV2) (E) 61 61
Front Interface Panel (FL13) (J) 62 63
Front Interface Panel (PV0-2) (J) 62 64
HDMI Link Receiver (M1) 65 67
HDMI + DMP (M2) 66 67
Trident Panel: SVP (T1) 68 73
Trident Panel: Source Select & uP (T2) 69 73
Trident Panel: ADC (T3) 70 73
Trident Panel: SDRAM (T4) 71 73
Trident Panel: Deflection Controller (T5) 72 73

8. Alignments 75

9. Circuit Descriptions, List of Abbreviations, and IC
Data Sheets 82
Abbreviation List 84
IC Data Sheets 85

10. Spare Parts List 86

11. Revision List 86

Published by BB 0570 TV Service Printed in the Netherlands Subject to modification EN 3122 785 15210

EN 2 L05L AA1.

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1.1 Technical Specifications

1.2 Connections

1.3 Chassis Overview

Notes:

• Described specifications are valid for the whole product
range.

• Figures below can deviate slightly from the actual situation,
due to different set executions.

1.1 Technical Specifications

1.1.1 Reception

Display type : CRT-DV-SF
Screen size : 29”; 4:3

: 34”; 4:3
: 28”; 16:9

: 32”; 16:9
Tuning system : PLL
Color systems : NTSC M (3.58 - 4.5)

: PAL M

: PAL N
Sound systems : BTSC
Channel selections : 181, full cable
IF picture carrier : 45.75 MHz
Aerial input : 75 ohm, F-type
A/V Connections : PAL B/G

1.1.2 Miscellaneous

Audio output: : 2 x 10 W

Power supply:

- Mains voltage range : 100 - 250 V

- Mains frequency : 50 / 60 Hz

Ambient conditions:

- Temperature range : +5 to +45 °C

- Maximum humidity : 90% R.H.

Power consumption:

- Normal operation : from 119 W

: to 133 W

- Standby : < 1 W

AC

1.2 Connections

Note: The following connector color abbreviations are used

(according to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green,
Gy= Grey, Rd= Red, Wh= White, Ye= Yellow.

1.2.1 Top Control and Front / Side Connections

FRONT I/O

RED

IRLIGHT SENSOR

(OPTIONAL)

- VOL +

S-VIDEO

Figure 1-1 Top control and Front / Side connections

Hosiden: S-Video In

1 -GND Ground H
2 -GND Ground H
3-Y 1 V
4-C 0.3 V

Audio / Video In

Ye - Video (CVBS) 1 V
Wh - Audio - L 0.2 V
Rd - Audio - R 0.2 V
Bk - Headphone 8 - 600 Ohm / 4 mW ot

LED

TOP CONTROL

MENU CH

SIDE I/O

R AUDIO L

VIDEO

/ 75 ohm j

PP

PP

/ 75 ohm jq

PP

RMS

RMS

F_15050_005.eps

/ 75 ohm j

/ 10 kohm jq
/ 10 kohm jq

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1.2.2 Rear Connections

75 Ohm

ComPair

VIDEO

L/Mono

AUDI O

MONITOR

OUT

R

Figure 1-2 Rear connections

1

18 2

19

HDMI

AV1

IN

Y

Pb

Pr

COMPONENT VIDEO INPUT

V

L

R

AV2

IN

V

L

R

S-VIDEO

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Technical Specifications, Connections, and Chassis Overview

EN 3L05L AA 1.

Aerial In

- F-type Coax, 75 ohm D

Monitor Out

Ye - Video (CVBS) 1 V
Wh - Audio - L 0.5 V
Rd - Audio - R 0.5 V

YUV In

Bu - U 0.7 V
Rd - V 0.7 V
Gn - Y 0.7 V

1.3 Chassis Overview

B1

CRT

ECO

B2

SCAVEM

ROT &

B3

SCAVEM (Only when Multi Board is used)

SIDE AV PANEL +

D

HEADPHONE

HDMI

M

PA NE L

TRIDENT

T

PA NE L

CRT PANEL

/ 75 ohm kq

PP

/ 1 kohm kq

RMS

/ 1 kohm kq

RMS

/ 75 ohm jq

PP

/ 75 ohm jq

PP

/ 75 ohm jq

PP

FAM ILY,
OR
MULTI BOARD

AV1 In

Ye - Video (CVBS) 1 V
Wh - Audio - L 0.5 V
Rd - Audio - R 0.5 V

/ 75 ohm jq

PP

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

AV2 In

Ye - Video (CVBS) 1 V
Wh - Audio - L 0.5 V
Rd - Audio - R 0.5 V

/ 75 ohm jq

PP

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

AV2 In (S-Video)

1 -Ground GND H

MONO

CARRIER

TOP CONTROL PANEL

FRONT INTERFACE PANEL

POWER SUPPLY

LINE DEFLECTION

TUNER IF

UOCIII (a.k.a. ’HERCULES’)

FEATURES & CONNECTIVITIES

CLASS D AUDIO AMPLIFIER

AUDIO AMPLIFIER

REAR I/O CINCH

FRONT CONTROL

DVD POWER SUPPLY

F_15210_036.eps

E

J

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

241005

Figure 1-3 PWB location

4. Mechanical Instructions

Index of this chapter:

4.1 Set Disassembly

4.2 Service Position

4.3 Assy/Panel Removal

4.4 Set Re-assembly

Note: Figures below can deviate slightly from the actual
situation, due to different set executions.

Mechanical Instructions

EN 7L05L AA 4.

4.1 Set Disassembly

Warning: Be sure to disconnect the AC power from the set

before opening it.

4.1.1 Rear Cover

1. Remove all screws. If you do not remove them, you cannot
access the clips.

2. Tilt the set a little forward, so that you can release the two
clickfit clamps that are located at the bottom plate of the
set.

3. Four openings (1) can be found at the top. The openings
are very small (2).
Note: Some sets only have the two inner openings.

4. Underneath every opening there is a clip. Push this clip
down with a very thin piece of metal (3), until you hear a
click.
Caution: do not use a screwdriver, this will damage the
cabinet.

5. When all four clips are pushed down, the back cover can
be removed.

Figure 4-2 Opening

2

E_13950_012 .eps

3

050404

1

Figure 4-1 Rear cover (for FL13 styling)

E_13950_011 .eps

050404

Figure 4-3 Pushing clips down

4.2 Service Position

Before placing the Mono Carrier in its service position, remove
the Front Interface assy/panel (see paragraph “Front Interface
Assy/Panel”) and the Side AV assy/panel (see paragraph “Side
AV Assy/Panel”).

E_13950_013.eps

050404

EN 8 L05L AA4.

Mechanical Instructions

4.3 Assy/Panel Removal

4.3.1 Front Interface Assy/Panel

1

1

1

2

F_15050_008.eps

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2

1

Figure 4-4 Mono Carrier

F_15050_010.eps

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Figure 4-6 Front interface assy/panel removal

1. Remove the two fixation screws.

2. Remove the complete module from the bottom plate, by
pulling the two fixation clamps upward [1], while sliding the
module away from the CRT [2].

3. Release the two fixation clamps at the side of the bracket,
and lift the panel out of the bracket (it hinges at one side).

4.3.2 Side AV Assy/Panel

1. Remove the fixation screw, and remove the complete Side
AV assembly.

3

2. Release the two fixation clamps, and lift the panel out of the
bracket.

F_15050_009.eps

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Figure 4-5 Service position Mono Carrier

1. Disconnect the degaussing coil.

2. Release the two fixation clamps [1] (at the mid left and mid
right side of the bracket), and remove the bracket from the
bottom tray, by pulling it backwards [2].

3. Move the panel bracket somewhat to the left and flip it 90
degrees [3], with the components towards the CRT.

4. Turn the panel bracket with the rear I/O toward the CRT.

4.3.3 HDMI Interface Panel

To remove the HDMI Interface panel from the Mono Carrier,
unscrew the fixation screw at the back of the assy.

4.3.4 Trident Panel

1. Remove all cables.

2. Pull the panel upwards out of the connectors.

4.3.5 Top Control Assy/Panel

4

2 2

3

3

1

Figure 4-7 Top Control assy/panel removal

1. Remove the two fixation screws at the bottom [1] and the
two fixation screws at the front of the assy [2].

2. Release the two fixation clamps [3] to lift out the assy.

3. Release the two fixation clamps [4] to lift the panel out of
the assy.

4

1

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4.4 Set Re-assembly

To re-assemble the whole set, do all processes in reverse
order.

Note: before you mount the rear cover, perform the following
checks:

• Check whether the AC power cord is mounted correctly in
its guiding brackets.

• Check whether all cables are replaced in their original
position

Mechanical Instructions

EN 9L05L AA 4.

EN 10 L05L AA5.

Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Problems and Solving Tips Related to CSM

5.4 ComPair

5.5 Error Codes

5.6 The Blinking LED Procedure

5.7 Protections

5.8 Fault Finding and Repair Tips

5.1 Test Points

This chassis is equipped with test points in the service printing.
In the schematics test points are identified with a rectangle box
around Fxxx or Ixxx. These test points are specifically
mentioned in the “Test Point Overview” as “half moons” with a
dot in the center.

Table 5-1 Test point overview

Test point Circuit Diagr.

F508, F535, F536, F537, F552, F561, F563, F573, F664,
I513, I518, I519, I524, I531, I533, I546

F401, F412, F413, F414, F418, F452, F453, F455, F456,
F458, F459, F460, F461, I408, I416, I417, I420, I462,
I468

F003, F004, I001, I002 Tuner IF A3

F201, F203, F205, F206 UOCIII A4

F240, F241, F242 Features &

F952, F955, I951, I952 Audio Amplifier A7

F692 Front Control A9

F331, F332, F333, F338, F339, F341, F351, F353, F354 CRT Panel B1

F361, F362, F381, F382 ECO Scavem B2

Perform measurements under the following conditions:

• Television set in Service Default Alignment Mode.

• Video input: Color bar signal.

• Audio input: 3 kHz left channel, 1 kHz right channel.

Power supply A1

Line & Frame
Deflection

Connectivities

• All service-unfriendly modes (if present) are disabled. The
service unfriendly modes are:
– Timer / Sleep timer.
– Child / parental lock.
– Blue mute.
– Hotel / hospital mode.
– Auto shut off (when no “IDENT” video signal is

received for 15 minutes).
– Skipping of non-favorite presets / channels.
– Auto-storage of personal presets.
– Auto user menu time-out.
– Auto Volume Leveling (AVL).

How to Enter

To enter SDM, use one of the following methods:

• Press the following key sequence on the remote control
transmitter: “062596” directly followed by the MENU button
(do not allow the display to time out between entries while
keying the sequence).

• Short the jumper wire 9252 with a cold ground on the family
board (for example the tuner casing) and apply AC power.
Then press the power button (remove the short after start­up).
Caution: Entering SDM by shorting wire 9252 with ground
will override the +8V-protection. Do this only for a short

A2

period. When doing this, the service-technician must know
exactly what he is doing, as it could damage the television
set.

• Or via ComPair.

A5

After entering SDM, the following screen is visible, with SDM in
the upper right corner of the screen to indicate that the
television is in Service Default Mode.

00028 L05US1 1.1 PUS1 0.7 SDM
ERR 0 0 0 0 0
OP 000 057 140 032 120 128 000

5.2 Service Modes

Service Default mode (SDM) and Service Alignment Mode
(SAM) offers several features for the service technician, while
the Customer Service Mode (CSM) is used for communication
between the call center and the customer.

This chassis also offers the option of using ComPair, a
hardware interface between a computer and the TV chassis. It
offers the abilities of structured troubleshooting, error code
reading, and software version readout for all chassis.
Minimum requirements for ComPair: a Pentium processor, a
Windows OS, and a CD-ROM drive (see also paragraph
"ComPair").

5.2.1 Service Default Mode (SDM)

Purpose

• To create a predefined setting for measurements to be
made.

• To override software protections.

• To start the blinking LED procedure.

Specifications

• Tuning frequency: 61.25 MHz (channel 3).

• Color system: PAL M.

• All picture settings at 50% (brightness, color contrast, hue).

• Bass, treble and balance at 50 %; volume at 25 %.

Figure 5-1 SDM menu

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Service Modes, Error Codes, and Fault Finding

EN 11L05L AA 5.

How to Navigate

Use one of the following methods:

• When you press the MENU button on the remote control,
the set will switch on the normal user menu in the SDM
mode.

• On the TV, press and hold the VOLUME DOWN and press
the CHANNEL DOWN for a few seconds, to switch from
SDM to SAM and reverse.

How to Exit

Switch the set to STANDBY by pressing the POWER button on
the remote control transmitter or the television set.
If you turn the television set off by removing the AC power (i.e.,
unplugging the television) without using the POWER button,
the television set will remain in SDM when AC power is re­applied, and the error buffer is not cleared.

5.2.2 Service Alignment Mode (SAM)

Purpose

• To change option settings.

• To display / clear the error code buffer.

• To perform alignments.

Specifications

• Operation hours counter (maximum five digits displayed).

• Software version, Error codes, and Option settings display.

• Error buffer clearing.

• Option settings.

• AKB switching.

• Software alignments (Tuner, White Tone, Geometry &
Audio).

• NVM Editor.

• ComPair Mode switching.

How to Enter

To enter SAM, use one of the following methods:

• Press the following key sequence on the remote control
transmitter: “062596" directly followed by the OSD/
STATUS button (do not allow the display to time out
between entries while keying the sequence).

• Or via ComPair.

After entering SAM, the following screen is visible, with SAM in
the upper right corner of the screen to indicate that the
television is in Service Alignment Mode.

00028 L05US1 1.1 PUS1 0.7 SAM

ERR 0 0 0 0 0

OP 000 057 140 032 120 128 000

. Clear Clear ?
. Options
. AKB On
. Tuner
. White Tone
. Geometry
. Audio
. NVM Editor
. ComPair on

Figure 5-2 SAM menu

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Menu Explanation

1. LLLLL. This represents the run timer. The run timer counts
normal operation hours, but does not count standby hours.

2. AAABCD-x.y. This is the software identification of the
main microprocessor:
– A= the project name (= L05).
– B= the region: E= Europe, A= Asia Pacific, U= NAFTA,

L= LATAM.

– C= the software diversity:

• Europe: T= 1 page TXT, F= Full TXT, V= Voice
control.

• LATAM and NAFTA: N= Stereo non-dBx, S=
Stereo dBx.

• Asian Pacific: T= TXT, N= non-TXT, C= NTSC.

• ALL regions: M= mono, D= DVD, Q= Mk2.

– D= the language cluster number.
– x= the main software version number (updated with a

major change that is incompatible with previous
versions).

– y= the sub software version number (updated with a

minor change that is compatible with previous
versions).

3. EFFG-x.y. This is the software identification of the Trident
microprocessor.
– P= indication of the Trident processor.
– FF= the region: US=Nafta.
– G= the language cluster number.
– x= the main software version number (updated with a

major change that is incompatible with previous
versions).

– y= the sub software version number (updated with a

minor change that is compatible with previous
versions).

4. SAM. Indication of the Service Alignment Mode.

5. Error Buffer. Shows all errors detected since the last time
the buffer was erased. Five errors possible.

6. Option Bytes. Used to set the option bytes. See “Options”
in the Alignments section for a detailed description. Seven
codes are possible.

7. Clear. Erases the contents of the error buffer. Select the
CLEAR menu item and press the MENU RIGHT key. The
content of the error buffer is cleared.

8. Options. Used to set the option bits. See “Options” in the
Alignments section for a detailed description.

9. AKB. Used to disable (Off) or enable (On) the “black
current loop” (AKB= Auto Kine Bias).

10. Tuner. Used to align the tuner. See “Tuner” in the
Alignments section for a detailed description.

11. White Tone. Used to align the white tone. See “White
Tone” in the Alignments section for a detailed description.

12. Geometry. Used to align the geometry settings of the
television. See “Geometry” in the Alignments section for a
detailed description.

13. Audio. No audio alignment is necessary for this television
set.

14. NVM Editor. Can be used to change the NVM data in the
television set. See table “NVM data” further on.

15. ComPair. Can be used to switch on the television to In
System Programming (ISP) mode, for software uploading
via ComPair. Caution: When this mode is selected without
ComPair connected, the TV will be blocked. Remove the
AC power to reset the TV.

How to Navigate

• In SAM, select menu items with the MENU UP/DOWN keys
on the remote control transmitter. The selected item will be
highlighted. When not all menu items fit on the screen, use
the MENU UP/DOWN keys to display the next / previous
menu items.

• With the MENU LEFT/RIGHT keys, it is possible to:
– Activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected submenu.

• In SAM, when you press the MENU button twice, the set
will switch to the normal user menus (with the SAM mode

EN 12 L05L AA5.

Service Modes, Error Codes, and Fault Finding

still active in the background). To return to the SAM menu
press the MENU or STATUS/EXIT button.

• When you press the MENU key in while in a submenu, you
will return to the previous menu.

How to Store SAM Settings

To store the settings changed in SAM mode, leave the top level
SAM menu by using the POWER button on the remote control
transmitter or the television set.

How to Exit

Switch the set to STANDBY by pressing the POWER button on
the remote control transmitter or the television set.
If you turn the television set “off” by removing the AC power
(i.e., unplugging the television) without using the POWER
button, the television set will remain in SAM when AC power is
re-applied, and the error buffer is not cleared.

5.2.3 Customer Service Mode (CSM)

Purpose

The Customer Service Mode shows error codes and
information on the TV’s operation settings. The call center can
instruct the customer (by telephone) to enter CSM in order to
identify the status of the set. This helps the call center to
diagnose problems and failures in the TV set before making a
service call.
The CSM is a read-only mode; therefore, modifications are not
possible in this mode.

How to Enter

To enter CSM, press the following key sequence on the remote
control transmitter: “123654” (do not allow the display to time
out between entries while keying the sequence).

Upon entering the Customer Service Mode, the following
screen will appear:

1 00028 L05US1 1.1 PUS1 0.7 CSM
2 CODES 0 0 0 0 0

3 OP 000 057 140 032 120 128 000
4 nnXXnnnn/nnX
5 P3C-1
6 NOT TUNED
7 NTSC
8 STEREO
9 CO 50 CL 50 BR 50 HU 0
0 AVL Off BS 50

6. Indicates the television is receiving an "IDENT" signal on
the selected source. If no "IDENT" signal is detected, the
display will read "NOT TUNED"

7. Displays the detected Color system (e.g. PAL/NTSC).

8. Displays the detected Audio (e.g. stereo/mono).

9. Displays the picture setting information.

10. Displays the sound setting information.

How to Exit

To exit CSM, use one of the following methods:

• Press the MENU, STATUS/EXIT, or POWER button on the
remote control transmitter.

• Press the POWER button on the television set.

5.3 Problems and Solving Tips Related to CSM

5.3.1 Picture Problems

Note: The problems described below are all related to the TV

settings. The procedures used to change the value (or status)
of the different settings are described.

Picture too Dark or too Bright

If:

• The picture improves when you have press the AUTO
PICTURE button on the remote control transmitter, or

• The picture improves when you enter the Customer
Service Mode,

Then:

1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.

5. Use the MENU UP/DOWN keys (if necessary) to select
BRIGHTNESS.

6. Press the MENU LEFT/RIGHT keys to increase or
decrease the BRIGHTNESS value.

7. Use the MENU UP/DOWN keys to select PICTURE.

8. Press the MENU LEFT/RIGHT keys to increase or
decrease the PICTURE value.

9. Press the MENU button on the remote control transmitter
twice to exit the user menu.

10. The new PERSONAL preference values are automatically
stored.

White Line around Picture Elements and Text

F_15050_015.eps

140205

Figure 5-3 CSM menu

Menu Explanation

1. Indication of the decimal value of the operation hours
counter, Software identification of the main and Trident
microprocessor (see "Service Default or Alignment Mode"
for an explanation), and the service mode (CSM=
Customer Service Mode).

2. Displays the last five errors detected in the error code
buffer.

3. Displays the option bytes.

4. Displays the type number version of the set.

5. Reserved item for P3C call centers.

If:

The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,

Then:

1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.

5. Use the MENU UP/DOWN keys to select SHARPNESS.

6. Press the MENU LEFT key to decrease the SHARPNESS
value.

Service Modes, Error Codes, and Fault Finding

EN 13L05L AA 5.

7. Press the MENU button on the remote control transmitter
twice to exit the user menu.

8. The new PERSONAL preference value is automatically
stored.

Snowy Picture

Check CSM line 6. If this line reads “Not Tuned”, check the
following:

• Antenna not connected. Connect the antenna.

• No antenna signal or bad antenna signal. Connect a proper
antenna signal.

• The tuner is faulty (in this case line 2, the Error Buffer line,
will contain error number 10). Check the tuner and replace/
repair the tuner if necessary.

Black and White Picture

If:

• The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,

Then:

1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.

5. Use the MENU UP/DOWN keys to select COLOR.

6. Press the MENU RIGHT key to increase the COLOR value.

7. Press the MENU button on the remote control transmitter
twice to exit the user menu.

8. The new PERSONAL preference value is automatically
stored.

Menu Text not Sharp Enough

If:

• The picture improves after you have pressed the AUTO
PICTURE button on the remote control transmitter,

Then:

1. Press the AUTO PICTURE button on the remote control
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.

2. Press the MENU button on the remote control transmitter.
This brings up the normal user menu.

3. In the normal user menu, use the MENU UP/DOWN keys
to highlight the PICTURE sub menu.

4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.

5. Use the MENU UP/DOWN keys to select PICTURE.

6. Press the MENU LEFT key to decrease the PICTURE
value.

7. Press the MENU button on the remote control transmitter
twice to exit the user menu.

8. The new PERSONAL preference value is automatically
stored.

5.4 ComPair

5.4.1 Introduction

• ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.

• ComPair allows very detailed diagnostics (on I2C level)
and is therefore capable of accurately indicating problem
areas. You do not have to know anything about I2C
commands yourself because ComPair takes care of this.

• ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the Force/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 fault finding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
(or RS232) cable.
For this chassis, the ComPair interface box and the TV
communicate via a bi-directional service cable via the service
connector(s).

The ComPair fault finding program is able to determine the
problem of the defective television. ComPair can gather
diagnostic information in two ways:

• Automatic (by communication with the television): ComPair
can automatically read out the contents of the entire error
buffer. Diagnosis is done on I2C/UART level. ComPair can
access the I2C/UART bus of the television. ComPair can
send and receive I2C/UART commands to the micro
controller of the television. In this way, it is possible for
ComPair to communicate (read and write) to devices on
the I2C/UART buses of the TV-set.

• Manually (by asking questions to you): Automatic
diagnosis is only possible if the micro controller of the
television is working correctly and only to a certain extend.
When this is not the case, ComPair will guide you through
the fault finding tree by asking you questions (e.g. Does the

screen give a picture? Click on the correct answer: YES /
NO) and showing you examples (e.g. Measure test-point I7
and click on the correct oscillogram you see on the
oscilloscope). You can answer by clicking on a link (e.g.

text or a waveform picture) that will bring you to the next
step in the fault finding process.

By a combination of automatic diagnostics and an interactive
question / answer procedure, ComPair will enable you to find
most problems in a fast and effective way.

Beside fault finding, ComPair provides some additional
features like:

• Up- or downloading of pre-sets.

• Managing of pre-set lists.

• Emulation of the (European) Dealer Service Tool (DST).

• If both ComPair and Force/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.

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:

EN 14 L05L AA5.

Service Modes, Error Codes, and Fault Finding

5.4.3 How to Connect

This is described in the chassis fault finding database in
ComPair.

TO

UART SERVICE

CONNECTOR

PC VCR I2CPower

I2C SERVICE
CONNECTOR

9V DC

E_06532_021.eps

180804

TO

Figure 5-4 ComPair interface connection

5.4.4 How to Order

ComPair order codes (EU/AP/LATAM):

• Starter kit ComPair32/SearchMan32 software and
ComPair interface (excl. transformer): 3122 785 90450.

• ComPair interface (excl. transformer): 4822 727 21631.

• Starter kit ComPair32 software (registration version): 3122
785 60040.

• Starter kit SearchMan32 software: 3122 785 60050.

• ComPair32 CD (update): 3122 785 60070 (year 2002),
3122 785 60110 (year 2003 onwards).

• SearchMan32 CD (update): 3122 785 60080 (year 2002),
3122 785 60120 (year 2003), 3122 785 60130 (year 2004).

• ComPair firmware upgrade IC: 3122 785 90510.

• Transformer (non-UK): 4822 727 21632.

• Transformer UK: 4822 727 21633.

• ComPair interface cable: 3122 785 90004.

• ComPair interface extension cable: 3139 131 03791.

• ComPair UART interface cable: 3122 785 90630

5.5.2 How to Clear the Error Buffer

The error code buffer is cleared in the following cases:

• By using the CLEAR command in the SAM menu:
– To enter SAM, press the following key sequence on the

remote control transmitter: “062596” directly followed
by the OSD/STATUS button (do not allow the display
to time out between entries while keying the
sequence).

– Make sure the menu item CLEAR is highlighted. Use

the MENU UP/DOWN buttons, if necessary.

– Press the MENU RIGHT button to clear the error

buffer. The text on the right side of the “CLEAR” line will
change from “CLEAR?” to “CLEARED”

• If the contents of the error buffer have not changed for 50
hours, the error buffer resets automatically.

Note: If you exit SAM by disconnecting the AC power from the
television set, the error buffer is not reset.

ComPair order codes (US):

• ComPair Software: ST4191.

• ComPair Interface Box: 4822 727 21631.

• AC Adapter: T405-ND.

• ComPair Quick Start Guide: ST4190.

• ComPair interface extension cable: 3139 131 03791.

• ComPair UART interface cable: 3122 785 90630

Note: If you encounter any problems, contact your local
support desk.

5.5 Error Codes

The error code buffer contains all errors detected since the last
time the buffer was erased. The buffer is written from left to
right. When an error occurs that is not yet in the error code
buffer, it is displayed at the left side and all other errors shift one
position to the right.

5.5.1 How to Read the Error Buffer

You can read the error buffer in 3 ways:

• On screen via the SAM (if you have a picture). Examples:
– ERROR: 0 0 0 0 0 : No errors detected
– ERROR: 6 0 0 0 0 : Error code 6 is the last and only

detected error

– ERROR: 9 6 0 0 0 : Error code 6 was detected first and

error code 9 is the last detected (newest) error

• Via the blinking LED procedure (when you have no
picture). See “The Blinking LED Procedure”.

•Via ComPair.

Service Modes, Error Codes, and Fault Finding

EN 15L05L AA 5.

5.5.3 Error Codes

In case of non-intermittent faults, write down the errors present
in the error buffer and clear the error buffer before you begin
the repair. This ensures that old error codes are no longer
present.

Table 5-2 Error code overview

Error Device Error description Check item Diagram

0 Not applicable No Error

1 Not applicable X-Ray/Over-voltage protection (US only) 2411, 2412, 2413, 6404, 6411, 6412 A2

2 Not applicable High beam (BCI) protection 3412, 7405 A2

3 Not applicable Vertical guard protection 3466, 7451 A2

4 Not applicable - --

5 Not applicable +5v protection 7604, 7605 A5

6 I2C bus General I2C error 7200, 3207, 3214 A4

7 Not applicable - --

8 Not applicable - --

9 24C16 I2C error while communicating with the EEPROM 7601, 3604, 3605 A5

10 Tuner I2C error while communicating with the PLL tuner 1000, 5001 A3

11 TDA6107/A Black current loop instability protection 7330, 3351, CRT B1

12 Not applicable - --

13 Not applicable - --

14 Not applicable - --

15 Not applicable - --

16 Not applicable - --

17 Not applicable - --

18 Not applicable - --

19 TDA1200x I2C error while communicating with sound decoder in UOCIII IC 7200 A4

20 TDA1200x I2C error while communicating with video cosmic in UOCIII IC 7200 A4

21 DPTVSVP I2C error while communicating with the 3D Processor 7201, 3223, 3224 T1

22 TDA9332 I2C error while communicating with the HOP 7221, 3244, 3629, 7226, 7227 T5

23 SAA5565 I2C error while communicating with the Painter uProcessor 7206, 3254, 3256 T2

24 AD9883 I2C error while communicating with the ADC 7210, 3268, 3270 T3

25 Not applicable No communication possible with Trident module - T

26 SII9993 I2C error while communicating with the HDMI receiver 7002, 3016, 3019 M1

If possible, check the entire contents of the error buffer. In
some situations, an error code is only the result of another error
and not the actual cause of the problem (for example, a fault in
the protection detection circuitry can also lead to a protection).

5.6 The Blinking LED Procedure

Using this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful when
there is no picture.

When the SDM is entered, the front LED will blink the contents
of the error-buffer:

• When all the error-codes are displayed, the sequence
finishes with a LED blink of 1.5 seconds,

• The sequence starts again.

Example of error buffer: 12 9 6 0 0
After entering SDM, the following occurs:

• 1 long blink of 5 seconds to start the sequence,

• 12 short blinks followed by a pause of 1.5 seconds,

• 9 short blinks followed by a pause of 1.5 seconds,

• 6 short blinks followed by a pause of 1.5 seconds,

• 1 long blink of 1.5 seconds to finish the sequence,

• The sequence starts again at 12 short blinks.

5.7 Protections

If a fault situation is detected, an error code will be generated;
and, if necessary, the television set will go into protection
mode. Blinking of the red LED at a frequency of 3 Hz indicates
the protection mode. In some error cases, the microprocessor
does not put the set in protection mode. The error codes of the
error buffer and the blinking LED procedure can be read via the
Service Default Menu (SDM), or via ComPair.

To get a quick diagnosis the chassis has three service modes
implemented:

• The Customer Service Mode (CSM).

• The Service Default Mode (SDM).

• The Service Alignment Mode (SAM).

For a detailed mode description, see the relevant sections.

5.8 Fault Finding and Repair Tips

Notes:

• It is assumed that the components are mounted correctly
with correct values and no bad solder joints.

• Before any fault finding actions, check if the correct options
are set.

5.8.1 NVM Editor

In some cases, it can be handy if one directly can change the
NVM contents. This can be done with the “NVM Editor” in SAM
mode. In the next table, the default NVM values are given.

EN 16 L05L AA5.

Table 5-3 NVM default values for LATAM-region

Service Modes, Error Codes, and Fault Finding

Default values (hex)

Item

EW (EW Width) 19 16 2A 2A 16 16 2E 2E 2E 29 29

PW (EW Parabola Width) 20 09 2F 2F 09 09 28 28 28 16 16

HS (Horizontal Shift) 21 26 28 28 26 26 26 26 26 26 2A

HP (Horizontal Parallelogram) 2 2 07 07 07 07 07 07 07 07 07 07

HB (Horizontal Bow) 23 07 07 07 07 07 07 07 07 07 07

UCP (EW Upper Corner Parabola) 24 20 20 20 20 20 20 20 20 20 20

LCP (EW Lower Corner Parabola) 2520 202020202020202020

TC (EW Trapezium) 26 1F 1D 1D 1F 1F 14 14 14 1C 1C

VS (Vertical Slope) 27 25 26 26 25 25 28 28 28 1D 1D

VA (Vertical Amplitude) 28 1B 2D 2D 1B 1B 18 18 18 1F 1F

SC (S-Correction) 29 20 20 20 20 20 20 20 20 20 20

VSH (Vertical Shift) 30 20 1E 1E 20 20 23 23 23 1C 1C

VX (Vertical Zoom) 3119191919191919 191919

VSL (Vertical Scroll) 3220202020202020202020

EHTC (Vertical Linearity) 33 14 19 19 14 14 19 19 19 19 19

BLOR (Black Level Offset - Red) 34 08 08 08 08 08 08 08 08 08 08

BLOG (Black Level Offset - Green) 35 08 08 08 08 08 08 08 08 08 08

AGC (AGC Takeover) 361414141414141414 1414

OIF (IF-PLL Offset) 37 26 26 26 26 26 26 26 26 26 26

Vertical Wait 38 0F 0F 0F 0F 0F 0F 0F 0F 0F 0F

H60 and V60 39 09 09 09 09 09 09 09 09 09 09

60 Hz Vertical Amplitude 4230303030 303030303030

YD & CL 43 06 06 06 06 06 06 06 06 06 06

RGB amplitude for full teletext mode 46 00 00 00 00 00 00 00 00 00 00

NVM_TABLE_VERSION 6010101010101010101010

OPTION_TABLE_VERSION 61 01 01 01 01 01 01 01 01 01 01

CVI_BLOR 62 08 08 08 08 08 08 08 08 08 08

CVI_BLOG 63 08 08 08 08 08 08 08 08 08 08

TXT Brightness 6417171717171717171717

V60 offset (60Hz Vertical Amplitude) 66 FE FE FE FE FE FE FE FE FE FE

FOAB, CHSE 139 03 03 03 03 03 03 03 03 03 03

NVM_SOC_SMD 142 10 10 10 10 10 10 10 10 10 10

NVM_FMWS 149 03 03 03 03 03 03 03 03 03 03

NVM_ASD_SC1_THR 150 10 10 10 10 10 10 10 10 10 10

NVM_CRYSTALALIGN 208 3F 3F 3F 3F 3F 3F 3F 3F 3F 3F

Last Brightness (VID PP others) 264 30 30 30 30 30 30 30 30 30 30

Last Colour (VID PP others) 265 28 28 28 28 28 28 28 28 28 28

Last Contrast (VID PP others) 266 55 55 55 55 55 55 55 55 55 55

Last Sharpness (VID PP others) 267 05 05 05 05 05 05 05 05 05 05

Last Hue (VID PP others) 268 35 35 35 35 35 35 35 35 35 35

Last Colour Temperature (VID PP others) 269 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D

White-D Cool Red 294 FD FD FD FD FD FD FD FD FD FD

White-D Cool Green 295 00 00 00 00 00 00 00 00 00 00

White-D Cool Blue 296 05 05 05 05 05 05 05 05 05 05

White-D Normal Red 297 21 21 21 21 21 21 21 21 21 21

White-D Normal Green 298 17 17 17 17 17 17 17 17 17 17

White-D Normal Blue 299 17 17 17 17 17 17 17 17 17 17

White-D Warm Red 300 02 02 02 02 02 02 02 02 02 02

White-D Warm Green 301 00 00 00 00 00 00 00 00 00 00

White-D Warm Blue 302 FA FA FA FA FA FA FA FA FA FA

Last Smart Sound 342 00 00 00 00 00 00 00 00 00 00

Last Volume 343 14 14 14 14 14 14 14 14 14 14

Last Balance 344 32 32 32 32 32 32 32 32 32 32

Last Treble (AUD PP others) 345 32 32 32 32 32 32 32 32 32 32

Last Bass (AUD PP others) 346 32 32 32 32 32 32 32 32 32 32

Address (dec)

32PW8422/78

34PT8422/78

34PT8422/77

32PW8422/77

32PW8422/44

29PT8422/78

29PT8422/77

29PT8422/44

28PW8422/78

28PW8422/77

Service Modes, Error Codes, and Fault Finding

EN 17L05L AA 5.

5.8.2 Power Supply

Set Not Working

Check Power
Supply Mains

Switch

Bridge Rectifier

circuit 6500

Ok

Check DC
voltage at
2505/2507

Ok

Check
fusible

resistor 3535

Not Ok

Check

3536

Not Ok

Check fusible
resistor 1500 &
circuit before it

Check IC7510 &

IC7531

Ok

Set able to

start-up

Ye s

End

No

Check other

fusible resistor

and capacitor in

the circuit

F_15050_004.eps

030205

5.8.3 Deflection

One Thin Vertical Line

Quick check:

• Set in protection mode.

• LED blinking with error “3”.

One Thin Vertical Line

LED Blinking

Check all

connection and

peripheral at

Deflection Circuit in

place

Check

Line Transistor

7405

Is VBE between

200mV to 30mV & V

approximately 500mV

Yes

Check Horizontal

Deflection

Circuitry

CB

Figure 5-5 Fault finding tree “Set not working”

Set Does Not Start Up

Set Unable

to Start

Software
loaded?

Yes

Check

voltage

across 2552

No

Is Vbatt

approximately

140V

Yes

Check

voltage

7545

3V3

Yes

Check 8V

across 7543

Yes

Check 5V

across 7544

Fuse Blown?

Load

Software

No

Yes

Check Power
Supply circuit

No

Change

Fuse

Replace transistor

E_14480_059.eps

170204

Figure 5-7 Fault finding tree “One thin vertical line”

One Thin Horizontal Line

Quick check:

• Set in protection mode.

• LED blinking with error “2”.

One Horizontal

Thin Line

LED Blinking

Check all connection

and peripheral at
Deflection Circuit

in place

Check transistor

(7451, 7523, 7543) at

Vertical Deflection Circuitry

Replace transistor

Yes

Set able to

Start

Yes

End

No

No

Check Line

Transistor 7405

Trident

F_15050_003.eps

Figure 5-6 Fault finding tree “Set does not start up”

030205

Yes

Check Vertical

Deflection Circuit

E_14480_060.eps

170204

Figure 5-8 Fault finding tree “One thin horizontal line”

EN 18 L05L AA5.

Service Modes, Error Codes, and Fault Finding

Blank Screen

Blank Screen

Check Vg2

(fine tune)

Not Ok

Check Beam Current Limit

(voltage is 1.8V-2V when

brightness and contrast is

set to the maximum

Ok

Check heater voltage

(measure pin 9&10
at the CRT socket)

Check video supply

(2436) is approximately

180V

Ok

Not Ok

Picture

appears?

Picture not appearing

Check deflection

circuit

Picture not appearing

Not Ok

5.8.5 Tuner and IF

No Picture

1. Check that the Option settings are correct.

2. If correct, check that supply voltages are there.

3. If supply voltages are present, check whether picture is
present in AV.

4. If picture is present in AV, check with the scope the Tuner
IF output signal by manual storage to a known channel.

5. If IF output is present, Tuner is working fine. If no IF output,
I2C data lines may be open, check continuity of I2C lines.
If I2C lines are ok, Tuner may be defect, replaced Tuner.

6. If Tuner IF is present and yet still no picture in RF mode, go
to Video Processing troubleshooting section.

No Picture, No Sound

Yes

Check tuning

supply voltage,

pin 9 of tuner

>30V & <35V

Check supply

voltage, pin 7 of

tuner

Check

Supply

V

No

T

Section

No Picture,

No Sound,
Raster Ok

Check AGC

Ok

Voltage, pin 1

of tuner

AGC voltage
changes with

different signal

strength

Ok

Picture

appears?

Ok

Figure 5-9 Fault finding tree “Blank screen”

5.8.4 Source Selection

Set is not able to go into AV or any missing AV is encountered

E.g. AV1 is available but not able to enter to AV1: Check if the
option setting is correct.

Set is able to go to AV, but no audio is heard.

1. Check that continuity of signal is there from the SCART/
Cinch input to the input of the UOCIII.

2. If continuity is there and still no audio, check that option
settings are correct.

3. If logic setting is correct and still no audio, proceed to Audio
Decoder/Processor troubleshooting section.

Set is able to go into AV but no video is available:

1. Check continuity from AV input to UOCIII depending on the
input.

2. If continuity is available and yet no video, proceed to Video
Processor troubleshooting section.

End

F_15050_001.eps

030205

No

Check AGC

circuit section

5V

Yes

Check Tuner

pin 4 & 5

I2C Bus

Ok

Yes

Replace Tuner

No

No

Check Power

Supply

Check other

functional area

E_14480_062.eps

Figure 5-10 Fault finding tree “No picture, no sound”

170204

Service Modes, Error Codes, and Fault Finding

EN 19L05L AA 5.

Picture Ok, No Sound

Picture Ok,

No Sound

Check IF output of

tuner, pin 11

CVBS

present?

Ye s

Check SAW filter output

(pin 4&5)

EU/AP/CH (QSS)- 1001

NA/LA/AP INT - 1002

Output Ok?

Ye s

Check other

functional area

No

No

Refer to fig.

"Power Supply:

Set not working"

Replace SAW

filter

E_14480_063.eps

170204

Figure 5-11 Fault finding tree “Picture ok, no sound”

Unable to Perform Tuning

Unable to

perform tuning

Enter SDM

check optionbyte 1

Correct

Check if tuner

Supply Voltage

pin 7

Incorrect

5V

Yes

Enter SDM and change

to the appropriate byte

Check Power

No

Supply

No

Check I2C

circuit

Replace

Tuner

5.8.6 Controller

Below are some guidelines for troubleshooting of the Micro
Controller function. Normally Micro Controller should be
checked when there is a problem of startup.

1. Check that both +3.3 V

and +1.8 VDC are present.

DC

2. Check that crystal oscillator is working.

3. Check that Power Good signal is at “high” logic, normal
operation.

4. Check that UOCIII is not in standby mode. Pin 15 of UOCIII
should be 0 V

DC

.

5. Make sure H-drive pulse is there. This can be checked at
resistor R3239. If H-drive does not exist, remove resistor
R3239 to check if there is loading.

Note: When the set shuts down after a few second after power
“on”, the main cause is that Vg2 not aligned properly, try
adjusting Vg2 during the few seconds of power “on”.

5.8.7 Video Processing

No Picture

When “no picture in RF”, first check if the microprocessor is
functioning ok in section “Controller”. If that is ok, follow the
next steps.
When “no picture in AV”, first check if the video source
selection is functioning ok in section “Source Selection”. If that
is ok, follow the next steps.

1. Check that normal operating conditions are met.

2. Check that there is video signal at pin 81. If no video,
demodulator part of the UOCIII is faulty, replace with new
UOCIII.

3. If video signal is available at pin 81, check pin 56, 57, and
58 for the RGB signal.

4. If signal is not available, try checking the BRIGHTNESS
and/or CONTRAST control, and make sure it is not at zero.

5. If still with the correct settings and no video is available,
proceed to the CRT/RGB amplifier diagram.

For sets with TDA9178, follow steps below:

1. Put Option Byte 2 bit 4 to “0”; if video signal is not available,
then check fault finding section “Controller”, Section
“Source Selection”, and steps above.

2. If video is available but not correct, put Option Byte 2 bit 4
to “1”, then check if LTI panel is present. If not, put LTI
panel in the main chassis (connector 1221).

3. If LTI panel is in main chassis, check cable between LTI
panel and main chassis (position is 1206). If it is
connected, then the LTI panel is faulty, replace it.

Check Tuner

Supply Voltage

Check I2C at pin

4 & 5 and tuner

Ok

Check other

functional area

Yes

Not Ok

33V

Not Ok

Not Ok

I2C

Not Ok

Tuner

E_14480_064.eps

Figure 5-12 Fault finding tree “Unable to perform tuning”

170204

EN 20 L05L AA5.

5.8.8 Audio Processing

No Sound

Picture Ok,

No Sound

Tuner IF Ok Check Tuner/IFNot Ok

Ok

Service Modes, Error Codes, and Fault Finding

Check AUDOUTLSL &

AUDOUTLSR pin at

UOCIII

Ok

Check Audio

Amplifier

Not Ok

Not Ok

Check UOCIII IC

Check Audio

Power Supply

Ok

Check Audio

Amplifier Circuit

and loud speaker

Ok

Check NVM

Not Ok

Check Power

Supply

Replace Audio

Amplifier

E_14480_065.eps

201005

Figure 5-13 Fault finding tree “No sound”

No RF Audio for QSS/Inter-Carrier Stereo Sets.

1. Check pin 99 and 100 for SIF signal (for QSS) or pin 104
and 105 for video with SIF (for Inter-Carrier)

2. If signal is not present, check for the QSS/FMI bit settings.
Check also the NVM data.

3. If signals are present and still no audio, check the audio
supply voltage +8V are present.

4. If still no audio signal at UOCIII output, the UOCIII is faulty.

No AV Audio.

1. Check troubleshooting methods in section “Source
Selection”.

2. Check the output of the UOCIII to see if there is signal
available. If no, check the normal operating condition and
also the NVM data.

3. If still no audio signal at UOCIII output, the UOCIII is faulty.

Note: If there is audio signal at UOCIII output and no audio at
loudspeaker, proceed to Audio Amplifier troubleshooting
methods.

5.8.9 Audio Amplifier

No RF as well as AV Audio at the Loudspeaker:

1. Check that the normal operation condition of the amplifier
is met.

2. If normal operation conditions are met, check the continuity
from UOCIII output to input of the amplifier.

3. If continuity is there and still no audio, check speaker wire
connections. If still no audio, amplifier IC might be faulty.

Block Diagrams, Testpoint Overviews, and Waveforms

6. Block Diagrams, Testpoint Overviews, and Waveforms

Wiring Diagram

TOP CONTROL PANEL

E

1010
3P

CRT PANEL

B

1361

3P

1352

1335

RIGHT

SPEAKER

RED

BLACK

(component view)

CRT

SOCKET

1351

1340

5P

5P

21L05L AA 6.

DEGAUSSING COIL

BLUE

CRT
16:9

ROTATION

CRT PANEL

B

FRAME

COIL

GREY

ORANGE

BROWN

SCAVEM

COIL

EHT
CRT

BLACK
RED

LEFT

SPEAKER

1336

1381

AQUADAG

3P

CVBS (YELLOW)

LEFT (WHITE)

RIGHT (RED)

HEADPHONE

D

SIDE
A/V PANEL +
HEADPHONE

4P

1206

1228

7P

6P

1222

6P

1280

1220

1252

1278

1533

12P

1693

7P

1533

12P

7P

3P

5P

1280

4P

6P

1221

5P

1202

1251

10P

1250

1223

12P

4P

1207

7P

6P

1228

1682

1206

4P

3P

1251

1250

10P

12P

1504

1401

1451

2P

2P

A

5P

MONO
CARRIER

LOT

1211

1404

2P

2P

FRONT INTERFACE

J

Warning: Some models have tact switch.

MAINS

1505/0202

M

1223

4P

7P

HDMI PANEL

1220

7P

6P

1222

SWITCH

1211/0201

2P

1693

7P

6P

1221

MAINS

CORD

TRIDENT PANEL

T

1005

3P

ComPair

CONNECTOR

TUNER

F_15210_034.eps

251005

Block Diagrams, Testpoint Overviews, and Waveforms

Block Diagram Supply and Deflection

SUPPLY AND DEFLECTION

SUPPLY

FRONT INTERFACE

J

1211

A1

1505

1

2

1231

MAINS

SWITCH

(not USA)

POWER SUPPLY

Degaussing

1506

MAINS

SWITCH

(not USA)

I511

6512

3519

7532

Coil

2511

6533

3530

I531

1500

T4E

2

6

3

6

11

1212

1

2

1504

5500 :
5502

7511
TEA1506T

DRAIN

Vcc

CONTROL

IC

CTRL

STANDBY

SUPPLY

7531
TEA1620

Vcc

CONTROL

IC

REG

SOURCE

AUX

DRIVER

SENSE

DEMAG

DRAIN

3507

t

6500

AC

I513

3513

14

3514

11

I519

3532

9

3517

7

3518

I533

14

2534

12

3538

6532

3534

3531

F508

2505

DC

MAIN

SUPPLY

3516

I516

D

S

7514

7512

G

6511

1503

43

1

2

5520

4

3

5531

17

18

13

14

10

11

1

7515
TCET1103

2

10

9

8

6

9

8

4

5

3

2

35321532

1A

4

5

1

2

HOT GROUND COLD GROUND

7541

ENERGIZING

CIRCUIT
(optional)

5551 5552

5562

5561

6564

6535

6536

6551

6563

6562

3571

6573

2536

F552

1543

7571

REFERENCE

7573

STANDBY

6565 6566

2564

2535

V_DG

6571

CIRCUIT

+3V3

CIRCUIT

3565

F536

6537

S

G

7536

7561

6676

D

I573

7535

For IDTV only

Vbatt

F563

-Vaudio

F561

+Vaudio

+6VA

3575

3576

Stdby_Con

POWER-DOWN

A4

F564

+3V
+6VA
+6VA

5537

+6V

F537

Vaux

I548

DEFLECTION

A4

INTF_Y GREEN_IN

A4

2x

HERCULES

A5

EHTinfo

A2

56

97

7200-H
(SYNC)

22L05L AA 6.

VIDEO
IDENT

MAIN

SYNC

SEPARATOR

EHTo

PHI 1

DETECTOR

VERTICAL

SYNC

SEPARATOR

3232

2240

HORIZONTAL

OSC.

SAND-

CASTLE

GENERATOR

X-RAY

PROTECTION

VERTICAL

DIVIDER

112

A2 A2

EHTinfo

113 116

VERTICAL

GUARD

DETECTOR

PHI 2

DETECTOR

VERTICAL

SAW-

THOOTH

Vguard

HORIZONTAL

OUTPUT

E/W

+

GEOMETRY

VERTICAL

OUTPUT

+

GEOMETRY

R.G.B.

BLANKING

A5

LINE + FRAME DEFLECTION

A2

LINE

+

E/W

CORR.

7452

7411

3465

-12V

7454

Vbatt

1404
1

2

7451

7453

3

1

F402

HOR.
DEFL.
COIL

3461

3466

5445

3474

3471

F458

1491
1

2

F459

EHT

FOCUS VG2

10

6

5

7

8

9

Vguard

VER.
DEFL.
COIL

FRAME_FB

1454

3442

6481

Vbatt

A4

I433

TO

CRT

B1

+Vbatt

3481

3410

6483 6484

6453

6456

3457

3455

6401

3411

3451

2403

6452

3458

3484

3485

1452

2456

6459

Vbatt

7401 : 7403
7480 : 7483

FRAME_FB

EHTb

EHTb

+

EHTinfo

+

EHTinfo

BCL

PROC.

F452

F453

VIDEO/SUPPLY

F455

6454

6455

EHTb

FILAMENT

VIDEO/SUPPLY

3401

F401

F_15210_035.eps

POWER-DOWN

A1

A4

BCL

A4

-12V

FILAMENT

+9V

VT_SUPPLY

A4

181005

1401

5

4

3

2

1

TO 1351

B1

CRT

+6VA

LINE

7408

F412

TO RGB
PROC.

7207

HDRIVE

HD

SANDCASTLE

A5

EW_DRIVE

62

63

108

-9V

7404

+8V

7410

3498

HD

6486

5402

E/W

+8V

3420 3440

I417

7484

7405

BU4508DX

F418

7406

3497

F414

OUTPUT
CIRCUIT

FRAME

+9V

106

107

VDRA

VDRB

F460

F461

3462

7455 7456

3463