Philips L01.1A AC Service Manual

Colour Television Chassis

L01.1A

AC

Contents Page Contents Page

1. Technical Specifications, Connections, and
Chassis Overview 2

2. Safety and Maintenance Instructions, Warnings,
and Notes 4

3. Directions for Use 6

4. Mechanical Instructions 16

5. Service Modes, Error Codes, and Faultfinding 18

6. Block Diagram, I

Testpoint Overviews

Block Diagram 23

2

I

C and Supply Voltage Diagram 24

Testpoint Overview Mono Carrier & CRT Panel 25

7. Electrical Diagrams and PWB’s Diagram PWB
Power Supply (Diagram A1) 26 41-46
Line Deflection (Diagram A2) 27 41-46
Frame Deflection (Diagram A3) 28 41-46
Tuner IF (Diagram A4) 29 41-46
Video IF + Sound IF (Diagram A5) 30 41-46
Synchronisation (Diagram A6) 31 41-46
Control (Diagram A7) 32 41-46
Audio Amplifier (Diagram A8) 33 41-46
NICAM, 2CS, BTSC Stereo Dec.(Diagram A9) 34 41-46
Audio/Video Source Switching (Diagram A10) 35 41-46
BTSC-NDBX Stereo Decoder (Diagram A11) 36 41-46
Front IO, Front Control and HP (Diagram A12) 37 41-46
Rear IO Cinch (Diagram A13) 38 41-46
Diversity Tables 39
PIP + Tilt Interface (Diagram A16) 40 41-46
CRT Panel: ECO Scavem (Diagram B1) 47 49-50
CRT Panel: ECO Scavem (Diagram B2) 48 49-50
Side AV Panel + Headphone (Diagram C) 51 51
Top Control Panel (Diagram E) 52 52
Degaussing + DAF Panel (Diagram G) 53 53
Front Interface Panel (Diagram Q1) 54 54

©

Copyright 2003 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.

2

C, Supply Voltage, and

8. Alignments 55

9. Circuit Description 61
Abbreviation List 70
IC Data Sheets 71

10 Spare Parts List 72
11 Revision List 76

Published by RB 0364 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 13210

EN 2 L01.1A AC1.

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview

Index:

1. Technical Specification

2. Connections

3. Chassis Overview

Note:

• Described specifications are valid for the whole product
range (see Product Survey for specific models).

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

1.1 Technical Specifications

1.1.1 Reception

Tuning system : PLL
Colour systems : NTSC 3.58, 4.43

: PAL B/G, B/H, D/K, I
: SECAM B/G, D/K, K1

Sound systems : FM-Stereo

: 2CS (B/G, China,

Korea)
: 2CS B/G, DK
: BTSC DBX
: NICAM B/G, D, D/K, I

1.2 Connections

: BI-NICAM B/G, D, D/

K, I
A/V connections : NTSC 3.58, 4.43
Channel selections : 100 or 125 channels

: UVSH or full cable

Aerial input : 75 Ohm

: IEC- or F-type

1.1.2 Miscellaneous

Audio output : Stereo: 2 x 1 W or 2 x

3W or 2 x 5W or 2 x

10W

: Mono: 1 x 1W or 1 x

3W or 1 x 4W or 2 x

2W
Mains voltage : 90 - 276 V or 150-

276V
Mains frequency : 50 / 60 Hz
Ambient temperature : + 5 to + 45 deg. C
Maximum humidity : 90 %
Power consumption : 52 W (20") to

: 120 W (36")

Standby Power consumption : < 3 W

1.2.1 Front/Side Connections and Front/Top Control

FRONT CONTROL + FRONT I/O

INSTALL/MENU

RED
LED

IR

VIDEO

R AUDIO L

+ VOLUME -

Figure 1-1 Front/Side connections and Front/Top control

Audio / Video In

1 -Video CVBS 1 Vpp/75 Ohm 
2 -Audio L 0.2 Vrms/10 kOhm 
3 -Audio R 0.2 Vrms/10 kOhm 
4 -Headphone 8 - 600 Ohm, 4 mW 

1.2.2 Rear Connections

75 Ohm

FM

MONITOR

OUT

V

L

R

AV1

IN

Y

U

V

V

L

R

AV2

IN

V

L

R SVHS

CL 16532008_005.eps

Figure 1-2 Rear connections

Monitor Out

1 -Video CVBS 1 Vpp/75 Ohm 
2 -Audio L 0.5 Vrms/1 kOhm 

CHANNEL

120601

TOP CONTROL SIDE I/O

P+

V+V-

P-

R AUDIO L

3 - Audio R 0.5 Vrms/1 kOhm 

AV1 YUV In(if present)

1 - Y 0.7 Vpp/75 Ohm 
2 - U 0.7 Vpp/75 Ohm 
3 - V 0.7 Vpp/75 Ohm 

AV1 In

1 - Video CVBS 1 Vpp/75 Ohm 
2 - Audio L 0.5 Vrms/10 kOhm 
3 - Audio R 0.5 Vrms/10 kOhm 

AV2 In

1 - Video CVBS 1 Vpp/75 Ohm 
2 - Audio L 0.5 Vrms/10 kOhm 
3 - Audio R 0.5 Vrms/10 kOhm 

AV2 In (SVHS)

1 - gnd 
2 - gnd 
3 - Y 1 Vpp/75 Ohm 
4 - C 0.3 Vpp/75 Ohm 

CL 36532039_007.eps

240403

Technical Specifications, Connections, and Chassis Overview

1.3 Chassis Overview

CRT

B1

CRT PANEL

B2

SCAVEM

TOP CONTROL PANEL

EN 3L01.1A AC 1.

E

C

DEGAUSSING & DAF PANEL

G

(34" only)

SIDE AV PANEL +

HEADPHONE

MAIN

CHASSIS

PANEL

FRONT INTERFACE PANEL

POWER SUPPLY

LINE DEFLECTION

FRAME DEFLECTION

TUNER IF

VIDEO + SOUND IF

SYNCHRONISATION

CONTROL (µC)

AUDIO AMPLIFIER

NICAM + 2CS +
BTSC DECODER

A/V SOURCE SWITCHING

BTSC - NDBX DECODER

FRONT I/O + FRONT CONTROL
+ HEADPHONE

REAR I/O CINCH

TILT INTERFACE

Q1

A1
A2
A3
A4
A5
A6
A7
A8

A9
A10
A11
A12
A13
A16

Figure 1-3 PWB Location

CL 36532039_008.eps

010503

EN 4 L01.1A AC2.

Safety & Maintenance Instructions, Warnings, and Notes

2. Safety & Maintenance Instructions, Warnings, and Notes

Index of this chapter:

1. Safety Instructions for Repairs

2. Maintenance Instructions

3. Warnings

4. Notes

2.1 Safety Instructions for Repairs

Safety regulations require that during a repair:

• Due to the 'hot' parts of this chassis, the set must be
connected to the AC power via an isolation transformer.

• Safety components, indicated by the symbol , should be
replaced by components identical to the original ones.

• When replacing the CRT, safety goggles must be worn.

Safety regulations require that after a repair, the set must be
returned in its original condition. Pay particular attention to the
following points:

• General repair instruction: as a strict precaution, we advise
you to resolder the solder connections through which the
horizontal deflection current is flowing, in particular:
– all pins of the line output transformer (LOT)
– fly-back capacitor(s)
– S-correction capacitor(s)
– line output transistor
– pins of the connector with wires to the deflection coil
– other components through which the deflection current

flows.

Note: This resoldering 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 AC power cord for external
damage.

• Check the strain relief of the AC power cord for proper
function, to prevent the cord from touching the CRT, hot
components, or heat sinks.

• Check the electrical DC resistance between the AC plug
and the secondary side (only for sets that have an isolated
power supply). Do this as follows:

1. Unplug the AC power cord and connect a wire between

the two pins of the AC plug.

2. Turn on the main power switch (keep the AC power

cord unplugged!).

3. Measure the resistance value between the pins of the

AC plug and the metal shielding of the tuner or the
aerial connection of the set. The reading should be
between 4.5 MOhm and 12 MOhm.

4. Switch the TV 'off' and remove the wire between the

two pins of the AC plug.

• Check the cabinet for defects, to prevent the possibility of
the customer touching any internal parts.

2.2 Maintenance Instructions

It is recommended to have a maintenance inspection carried
out by qualified service personnel. The interval depends on the
usage conditions:

• When the set is used under normal circumstances, for
example in a living room, the recommended interval is
three to five years.

• When the set is used 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

CL96532156_040.eps

Figure 2-1 Discharge picture tube

• All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD ). Careless handling
during repair can reduce life drastically. When repairing,
make sure that 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. Adjustment of this unit during repair is therefore not
recommended.

• Be careful during measurements in the high voltage
section and on the picture tube.

• Never replace modules or other components while the unit
is switched 'on'.

• When you align the set, use plastic rather than metal tools.
This will prevent any short circuits and the danger of a
circuit becoming unstable.

2.4 Notes

2.4.1 General

• Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (), or hot ground (), depending
on the area of circuitry being tested.

• The voltages and waveforms shown in the diagrams are
indicative. Measure them in the Service Default Mode (see
“Service Modes, Error Codes, and Faultfinding” section)
with a color bar signal and stereo sound (L: 3 kHz, R: 1 kHz
unless stated otherwise) and picture carrier at 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.

140501

Safety & Maintenance Instructions, Warnings, and Notes

• The picture tube panel has printed spark gaps. Each spark
gap is connected between an electrode of the picture tube
and the Aquadag coating.

• The semiconductors indicated in the circuit diagram and in
the parts lists are completely interchangeable per position
with the semiconductors in the unit, irrespective of the type
indication on these semiconductors.

2.4.2 Schematic Notes

• All Resistor values are in ohms and the value multiplier is
often used to indicate the decimal point location (e.g. 2K2
indicates 2.2 kOhm).

• Resistor values with no multiplier may be indicated with
either an 'E' or an 'R' (e.g. 220E or 220R indicates 220
Ohm).

• All Capacitor values are expressed in Micro-Farads (µ =

-6

x10

), Nano-Farads (n = x10-9), or Pico-Farads

-12

(p = x10

• Capacitor values may also use the value multiplier as the
decimal point indication (e.g. 2p2 indicates 2.2 pF).

• An 'asterisk' (*) indicates component usage varies. Refer to
the diversity tables for the correct values.

• The correct component values are listed in the Electrical
Replacement Parts List. Therefore, always check this list
when there is any doubt.

).

EN 5L01.1A AC 2.

2.4.3 Practical Service Precautions

• It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.

• Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions - reactions that are best avoided. Before reaching
into a powered TV set, it is best to test the high voltage
insulation. It is easy to do, and is a good service precaution.

• Before powering up the TV set with the back cover off
(or on a test fixture), attach a clip lead to the CRT DAG
ground and to a screwdriver blade that has a well insulated
handle. After the TV is powered on and high voltage has
developed, probe the anode lead with the blade, starting at
the case of the High Voltage Transformer (flyback - IFT).
Move the blade to within two inches of the connector of the
CRT. If there is an arc, you found it the easy way,
without getting a shock! If there is an arc to the
screwdriver blade, replace the part which is causing the
problem; the High Voltage Transformer or the lead (if it is
removable).

EN 6 L01.1A AC3.

3. Directions for Use

Directions for Use

Direction for Use

EN 7L01.1A AC 3.

EN 8 L01.1A AC3.

Direction for Use

Direction for Use

EN 9L01.1A AC 3.

EN 10 L01.1A AC3.

Direction for Use

Direction for Use

EN 11L01.1A AC 3.

EN 12 L01.1A AC3.

Direction for Use

Direction for Use

EN 13L01.1A AC 3.

EN 14 L01.1A AC3.

Direction for Use

Direction for Use

EN 15L01.1A AC 3.

Personal Notes:

EN 16 L01.1A AC4.

Mechanical Instructions

4. Mechanical Instructions

Index of this chapter:

1. Set Disassembly

2. Service Positions

3. Assy/Board Removal

4. Set Re-assembly

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

4.1 Set Disassembly

1. Remove all fixation screws of the rear cover (do not forget
the screws that hold the rear connection panel).

2. Now pull the rear cover backwards to remove it.

4.2 Service Positions

There are 2 configurations possible. With and without panel
bracket. Both have a different service position:

Main panel without bracket (with integrated 'control' part).

1. Disconnect the strain relief of the AC power cord.

2. Remove the main panel, by pushing the two center clips
outwards [1]. At the same time pull the panel away from the
CRT [2].

3. Disconnect the degaussing coil by removing the cable from
(red) connector 0212.

4. Turn the panel 90 degrees counter clockwise [3].

5. Flip the panel 90 degrees [4], with the components towards
the CRT.

6. Turn the panel with its rear connections towards the CRT
[5].

7. Slide the metal heatsink (near the mains transformer 5520)
underneath the right chassis bracket. This secures the
panel [6].

Main panel with bracket (with separate 'control' part).

1. Disconnect the strain relief of the AC power cord.

2. Disconnect the degaussing coil by removing the cable from
(red) connector 0212 [1].

3. Remove the panel bracket from the bottom tray, by pulling
it backward [2].

4. Turn the chassis tray 90 degrees counter clockwise [2].

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

6. Turn the panel with the rear I/O towards the CRT.

7. Place the hook of the tray in the fixation hole of the cabinet
bottom [4] and secure it.

1

2

A

A

1

1

1

2

3

4.3 Assy/Board Removal

Figure 4-2 Service position (2)

3

4

CL 16532016_009.eps

B

220501

4.3.1 Comb Filter Assy/ Board (if present)

4

5

You can remove the Comb Filter panel from the Main Carrier
board, by disconnecting it from connector 1810 (located nearby
the mains transformer 5520).

B

6

CL 16532016_007.ai

040401

Figure 4-1 Service position (1)

Mechanical Instructions

EN 17L01.1A AC 4.

4.3.2 Top Control Assy/Board (if present)

M

Figure 4-3 Top control removal

1. Remove the two fixation screws (if present).

2. Pull the module down and backwards (w.o.w. release it
from the front hinge [M]). You must use some force.

3. Lift the board from its bracket while releasing the two
fixation clamps. The board hinges on the other side.

4.3.3 Front Interface Assy/ Board (if present)

Top control board

CL 06532012_003.eps

030200

1. You can remove the complete module from the Main
Carrier bracket, by pressing its fixation clamp downwards
[1] while sliding the module in the direction of the CRT [2].

2. Release the 2 fixation clamps [3] to lift the board out of the
bracket [4].

4.3.5 Side I/O Assy/ Board (if present)

CL 06532012_004.eps

030200

1

1

2

3

3

Figure 4-4 Front interface removal

1. You can remove the complete module from the bottom
plate, by pulling the two fixation clamps upwards [1] while
sliding the module away from the CRT [2].

2. Release the 2 fixation clamps [3] at the side of the bracket,
and lift the board out of the bracket (it hinges at one side).

4.3.4 DAF Assy/ Board (if present)

1

4

CL 06532130_018.eps

021000

Figure 4-6 Side jack panel removal

1. You can remove the complete Side I/O assembly after
removing the 2 fixation screws.

2. Release the 2 fixation clamps to lift the board out of the
bracket.

4.4 Set Re-assembly

Before you mount the rear cover, perform the following checks:

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

2. Re-place the strain relief of the AC power cord into the
cabinet.

3. Check whether all cables are replaced in their original
position.

2

Figure 4-5 DAF panel removal

3

3

CL 26532119_060.eps

181202

EN 18 L01.1A AC5.

Service Modes, Error Codes and Fault Finding

5. Service Modes, Error Codes and Fault Finding

Index:

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. These test points refer to the functional
blocks:

Table 5-1 Test Point Overview

TEST POINT CIRCUIT DIAGRAM

A1-A2-A3-.. AUDIO PROCESSING A8, A9
C1-C2-C3-.. CONTROL A7
F1-F2-F3-.. FRAME DRIVE & OUTPUT A3
I1-I2-I3-.. TUNER & IF A4
L1-L2-L3-.. LINE DRIVE & OUTPUT A2
P1-P2-P3-.. POWER SUPPLY A1
S1-S2-S3-.. SYNCHRONISATION A6
V1-V2-V3-.. VIDEO PROCESSING A5, B1

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 Alignment Mode.

• Video: colour bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 Service Modes

Service Default Alignment Mode (SDAM) offers several
features for the service technician, while the Customer Service
Mode (CSM) is used for communication between dealer and
customer.
There is also the option of using ComPair, a hardware interface
between a computer (see requirements) and the TV chassis. It
offers the ability of structured trouble shooting, error code
reading and software version readout for all chassis.
Requirements: To run ComPair on a computer (laptop or
desktop) requires, as a minimum, a 486 processor, Windows

3.1 and a CD-ROM drive. A Pentium Processor and Windows
95/98 are also acceptable (see also paragraph 5.4).

Table 5-2 SW Cluster

SW
Cluster

L3LAN1 L01AN4x.y TDA9582

L3LAN2 L01AN5x.y TDA9582

L3LAN3 L01AN7x.y TDA9570

L3LAT1 L01AT5x.y TDA9552

L3LAC1 L01AC2x.y TDA9580

Abbreviations in Software name: A = AP, T = TXT,
N = NON TXT, C = NTSC, M = MONO, D = DVD

5.2.1 Service Default Alignment Mode (SDAM)

Purpose

• To change option settings.

• To create a predefined setting to get the same

• To display / clear the error code buffer.

• To override SW protections.

• To perform alignments.

• To start the blinking LED procedure.

Specifications

• Tuning frequency:

• Colour system:

• All picture settings at 50 % (brightness, colour contrast,

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

• All service-unfriendly modes (if present) are disabled, like:

• Operation hours counter.

• Software version.

• Option settings.

• Error buffer reading and erasing.

• Software alignments.

Software
mane

measurement results as given in this manual.

– 475.25 MHz for PAL/SECAM (AP-PAL).
– 61.25 MHz (channel 3) for NTSC-sets (AP-NTSC).

– PAL-BG for AP-PAL.
– NTSC for AP-NTSC.

hue).

– (sleep) timer,
– child/parental lock,
– blue mute,
– hotel/hospitality mode
– auto switch-off (when no “IDENT” video signal is

received for 15 minutes),
– skip / blank of non-favorite presets / channels,
– auto store of personal presets,
– auto user menu time-out.

UOC type UOC

(LS)

(LS)

(LS)

(LS)

(LS)

Diversity

64K ROM
Size

64K ROM
Size

55K ROM
Size

64K ROM
Size

64K ROM
Size

Special
Features

China

India, M.E.

China,
AV stereo

1pg TXT,
AV stereo

NTSC,
Tai Wan,
Korean

How to enter SDAM

Use one of the following methods:

• Use a standard customer RC-transmitter and key in the
code 062596 directly followed by the “M” (menu) button or

• Short jumper wires 9631 and 9641 on the mono carrier
(see Fig. 8-1) and apply AC power. Then press the power
button (remove the short after start-up).

• Caution: Entering SDAM by shorten wires 9631 and 9641
will override the +8V-protection. Do this only for a short
period. When doing this, the service-technician must know
exactly what he is doing, as it could lead to damaging the
set.

• Or via ComPair.

Service Modes, Error Codes and Fault Finding

EN 19L01.1A AC 5.

After entering SDAM, the following screen is visible, with S at
the upper right side for recognition.

LLLL AAABCD  X.Y S
ERR XX  XX XX XX  XX

XXX XXX XXX XXX XXX XXX XXX

CLEAR CLEAR  ?
OPOPTIONS >
AKB
TUNER >
WH I TE  TONE >
GEOMETRY >
AUD I O >

>

CL 26532046_078.eps

260402

Figure 5-1 SDAM menu

LLLL

This is the operation hours counter. It counts the normal
operation hours, not the standby hours.

AAABCD-X.Y

This is the software identification of the main micro controller:
A = the project name (L01).
B = the region: E= Europe, A= Asia Pacific, U= NAFTA, L=
LATAM.
C = the feature of software diversity: C = NTSC, D = DVD, N =
no TXT, T = TXT.
D = the language cluster number:
X = the main software version number.
Y = the sub software version number.

S

Indication of the actual mode. S= SDAM= Service Default
Alignment mode.

Error buffers

Five errors possible.

Option bytes

Seven codes possible.

Clear

Erase the contents of the error buffer. Select the CLEAR menu
item and press the CURSOR RIGHT key. The content of the
error buffer is cleared.

Options

To set the Option Bytes. See chapter 8.3.1 for a detailed
description.

AKB

Disable (0) or enable (1) the “black current loop” (AKB = Auto
Kine Bias).

Tuner

To align the Tuner. See chapter 8.3.2 for a detailed description.

White Tone

To align the White Tone. See chapter 8.3.3 for a detailed
description.

Geometry

To align the set geometry. See chapter 8.3.4 for a detailed
description.

Audio

To align the Audio. See chapter 8.3.5 for a detailed description.

How to navigate

• In SDAM, select menu items with the CURSOR UP/DOWN
key on the remote control 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:
– Activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected submenu.

• When you press the MENU button twice, the set will switch
to the normal user menus (with the SDAM mode still active
in the background). To return to the SDAM menu press the
OSD / STATUS button.

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

How to store settings

To store settings leave the SDAM (at top level SDAM main
menu) with the Standby button on the remote.

How to exit

Switch the set to STANDBY by pressing the power button on
the remote control (if you switch the set 'off' by removing the AC
power, the set will return in SDAM when AC power is re­applied). The error buffer is not cleared.

5.2.2 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 severness 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

To enter the CSM by pressing user remote control and key in
the code123654.
After switching ON the Customer Service Mode, the following
screen will appear:

1 CSM
2
3 AAABCDX.Y
4 AKBS
5TVSYSTEM/NOTTUNED
6 ERRORBUFFER

CL 26532046_002

040402

Figure 5-2 CSM menu

• Indication of the actual mode CSM = Customer Service
Mode

• Reserved.

• Software identification of the main micro controller (see
paragraph 5.2.1 for the explanation)

• Reserved item.

• Indicates TV system and or not receiving an “IDENT” signal
on the selected source. It will display “NOT TUNED”

• Error code buffer (see paragraph 5.4 for more details).
Displays the last five errors of the error code buffer.

How to exit

Use one of the following methods:

• Press one of the buttons “Menu”, “OSD” or “Standby” of
the remote control keys.

• Switch-off the TV set with the AC power switch.

5.3 Problems and Solving Tips (Related to CSM)

5.3.1 Picture Problems

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.

EN 20 L01.1A AC5.

Service Modes, Error Codes and Fault Finding

No colours / noise in picture

Check CSM line 5. Wrong colour system installed. To change
the setting:

1. Press the MENU button on the remote control.

2. Select the INSTALLATION sub menu.

3. Select and change the SYSTEM setting until picture and
sound are correct.

4. Select the STORE menu item.

Colours not correct / unstable picture

Check CSM line 5. Wrong colour system installed. To change
the setting:

1. Press the MENU button on the remote control.

2. Select the INSTALLATION sub menu.

3. Select and change the SYSTEM setting until picture and
sound are correct.

4. Select the STORE menu item.

Picture too dark or too bright

Increase / decrease the BRIGHTNESS and / or the
CONTRAST value when:

• The picture improves after you have pressed the “Smart
Picture” button on the remote control.

• The picture improves after you have switched on the
Customer Service Mode

The new “Personal” preference value is automatically stored.

White line around picture elements and text

Decrease the SHARPNESS value when:

• The picture improves after you have pressed the “Smart
Picture” button on the remote control.

The new “Personal” preference value is automatically stored.

Snowy picture

Check CSM line 5. If this line indicates “Not Tuned”, check the
following:

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

• Antenna not connected. Connect the antenna.

• No channel / pre-set is stored at this program number. Go
to the INSTALL menu and store a proper channel at this
program number.

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

Snowy picture and/or unstable picture

• A scrambled or decoded signal is received.

Black and white picture

Increase the COLOR value when:

• The picture improves after you have pressed the “Smart
Picture” button on the remote control.

The new “Personal” preference value is automatically stored.

Menu text not sharp enough

Decrease the CONTRAST value when:
The picture improves after you have pressed the “Smart
Picture” button on the remote control.
The new “Personal” preference value is automatically stored.

5.3.2 Sound Problems

No sound or sound too loud (after channel change / switching on)

Increase / decrease the VOLUME level when the volume is OK
after you switched on the CSM. The new “Personal” preference
value is automatically stored.

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

• ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the SearchMan electronic manual of the defective chassis,
schematics and PWBs are only a mouse click away.

5.4.2 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 L01 chassis, the ComPair interface box and the
TV communicate via a bi-directional service cable via the
service connector (located on the Main panel, see also figure
8-1 suffix D).

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 I2C level. ComPair can access
the I2C bus of the television. ComPair can send and
receive I2C commands to the micro controller of the
television. In this way, it is possible for ComPair to
communicate (read and write) to devices on the I2C
busses of the TV-set.

• 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 faultfinding tree by asking you questions (e.g. Does the
screen gives 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 presets.

• Managing of preset lists.

• 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 Monocarrier.

• 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.

Service Modes, Error Codes and Fault Finding

EN 21L01.1A AC 5.

5.4.3 How To Connect ComPair

1. First install the ComPair Browser software (see the Quick
Reference Card for installation instructions).

2. Connect the RS232 interface cable between a free serial
(COM) port of your PC and the PC connector (marked with
“PC”) of the ComPair interface.

3. Connect the AC power adapter to the supply connector
(marked with “POWER 9V DC”) on the ComPair interface.

4. Switch the ComPair interface OFF.

5. Switch the television set OFF (remove the AC power).

6. Connect the ComPair interface cable between the
connector on the rear side of the ComPair interface
(marked with “I2C”) and the ComPair connector on the
mono carrier (see figure 8-1 suffix D).

7. Plug the AC power adapter in the AC power outlet and
switch on the interface. 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.

PC VCR I2CPower

Figure 5-3 Compair connection

5.4.4 How To Order

ComPair order codes:

• Starter kit ComPair32/ SearchMan32 software and
ComPair interface (excluding 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

5.4.5 Error Buffer

The error code buffer contains all detected errors 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 written at the left side and all other errors shift one
position to the right.

5.4.6 How To Read The Error Buffer

You can read the error buffer in 3 ways:

• On screen via the SDAM (only 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 first detected and

error code 9 is the last detected (newest) error

• Via the blinking LED procedure (when you have no
picture). See next paragraph.

•Via ComPair.

9V DC

86532027_003.EPS

050898

5.4.7 How To Clear The Error Buffer

The error code buffer is cleared in the following cases:

• By activation of the CLEAR command in the SDAM menu:

• If the content of the error buffer has not changed for 50
hours, it resets automatically.

Note:

When leaving SDAM by disconnecting the set from AC power,
the error buffer is not reset.

5.4.8 Error Codes

In case of non-intermittent faults, clear the error buffer before
you begin the repair. These to ensure that old error codes are
no longer present.
If possible, check the entire contents of the error buffer. In
some situations an error code is only the result of another error
code and not the actual cause (e.g., a fault in the protection
detection circuitry can also lead to a protection).

ERROR Device Error

description

0Not

No Error

Check
item

applicable

1Not

applicable

2Not

applicable

X-Ray Protec­tion (USA)

Horizontal
Protection

2465,
7460

7460,
7461,
7462,
7463,
6467

3 TDA8359/

TDA9302

4 MSP34X5/

TDA9853

5 TDA95XX POR 3.3V / 8V

Vertical
Protection

MAP I2C iden­tification error

Protection

VloAux
+13v

7831 A9

7200,
7560,
7480

6 I2C bus General

I2C bus error

7200,
3624,
3625

7Not

---

applicable

8Not

applicable

E/W
Protection
(Large
Screen)

9 M24C08 NVM I2C

identification
error

7400,
3405,
3406,
3400

7602,
3611,
3603,
3604

10 Tuner Tuner I2C

identification

1000,
7482

error

11 TDA6107/8 Black current

loop protection

7330,
RGB
amps,
CRT

12 M65669 MAP I2C iden-

7803 P
tification error
(USA)

Diagram

A2

A2

A2,A3

A1,A2.
A5,A6,
A7

A7

A2

A7

A2,A4

B1,B2

EN 22 L01.1A AC5.

Service Modes, Error Codes and Fault Finding

5.5 The Blinking LED Procedure

Via 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 SDAM is entered, the LED will blink the contents of
the error-buffer.

• n short blinks (n = 1 - 14),

• when all the error-codes are displayed, the sequence
finishes with a LED blink of 3 s,

• the sequence starts again.

Example of error buffer: 12 9 6 0 0
After entering SDAM:

• 12 short blinks followed by a pause of 3 s,

• 9 short blinks followed by a pause of 3 s,

• 6 short blinks followed by a pause of 3 s,

• 1 long blink of 3 s to finish the sequence,

• the sequence starts again.

5.6 Protections

If a fault situation is detected an error code will be generated
and if necessary the set will be put in the 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 the protection mode. The error codes of the
error buffer can be read via the service menu (SDAM), the
blinking LED procedure or via ComPair.
To get a quick diagnosis the chassis has two service modes
implemented:

• The Customer Service Mode (CSM).

• The Service Default Alignment Mode (SDAM). Start-up of
the set in a predefined way and adjustment of the set via a
menu and with the help of test patterns.

problem is expected in the vertical amplifier IC 7471.
Measure with a scope the waveform on pin 17 of the UOC.
Measure also at pin 1 of IC 7471. If here the signal is
missing, a defective resistor R3244 causes the problem

5.7 Repair Tips

Below some failure symptoms are given, followed by a repair
tip.

• Set is dead and makes hiccuping sound “MainSupply” is
available. Hiccupping stops when de-soldering L5561,
meaning that problem is in the “MainSupply” line. No output
voltages at LOT, no horizontal deflection. Reason: line
transistor 7460 is defective.

• Set is dead, and makes no soundCheck power supply IC

7520. Result: voltage at pins 1, 3, 4, 5 and 6 are about 180
V and pin 8 is 0 V. The reason why the voltage on these
pins is so high is because the output driver (pin 6) has an
open load. That is why MOSFET 7521 is not able to switch.
Reason: feedback resistor 3523 is defective. Caution: be
careful measuring on the gate of 7521; circuitry is very high
ohmic and can easily be damaged!

• Set is in hiccup mode and shuts down after 8 s.Blinking
LED (set in SDAM mode) indicates error 5. As it is unlikely
that µP “POR” and “+8V protection” happen at the same
time, measure the “+8V”. If this voltage is missing, check
transistor 7480.

• Set is non-stop in hiccup modeSet is in over current
mode; check the secondary sensing (opto coupler 7515)
and the “MainSupply” voltage. Signal “Stdby_con” must be
logic low under normal operation conditions and goes to
high (3.3 V) under standby and fault conditions.

• Set turns on, but without picture and soundThe screen
shows snow, but OSD and other menus are okay. Blinking
LED procedure indicates error 11, so problem is expected
in the tuner (pos. 1000). Check presence of supply
voltages. As “Vlotaux+5V” at pin 5 and 7 are okay,
“VT_supply” at pin 9 is missing. Conclusion: resistor 3460
is defective.

• Set turns on, but with a half screen at the bottom.
Sound is okayBlinking LED (set in SDAM mode) indicates
error 3. Check “Vlotaux+11V” and “+50V”. If they are okay,

Block Diagram, Supply Voltage, and Testpoint Overview

6. Block Diagram, Supply Voltage, and Testpoint Overview

Block Diagram

23L01.1A AC 6.

SIDE AV

C

0251

6

V

3

L

1

R

REAR I/O CINCH

A13

V

L

MONITOR

OUTPUT

R

Y

U

YUV

INPUT

V

TUNER IF

A4

V

LOTAUX

FM

SDA

A7

SCL

A7

COMB-BYPASS

A7

DEGAUSSING (34" only)

G

Degaussing

Coil

POWER SUPPLY

A1

150-250V
SINGLE
RANGE

90-276V
FULL RANGE

FRONT

Q1

INTERFACE
(PARTLY)

0211

110V

+5V

0265

OR

1

2

0211

0231

SWITCH

A2

1

3001

3000

1506

1

2

MAINS

7101

7102, 7103

STATUS 1

VT_SUPPLY

5001

1000

2

TV

0231

MAINS

SWITCH

G-Y-IN

B-U-IN

R-V-IN

ERR

10

I1

I2

0212

L-OUT

R-OUT

1

2

A12

0219

6

3

1

V-OUT

A9

A9

STATUS 1

A5

A5

A5

6, 7 9

TV TUNER

+

FM-RADIO

TUNER

(OPTIONAL)

5

4

7001, 7002

FILTER

SELECT

3505
PTH451C

+t

3

+t

1500

T4E

FRONT I/O

A5

VT

FM

AGC

1

1

2

0212

7520
TEA1507

3

CTRL

CONTROL

MONO

V

A

L

B

C

AV1

A7

SVHS

6001
BZX79-C33

11

IF

10

+t

5500 :
5502

DRAIN

DRIVER

DEMAG

IC

SENSE

V

L

R

154

I4

I3

3507

+t

3504

t

8

VCC

STEREO

V

L

R

32

3506

3532

3523

6

3525

5

3522

4

3528

1

AUDIO/VIDEO

A10

CVBS-

FRONT-IN

A

B

C

9

10

6

4

V

LAV2

R

1002
1003

1004

1505

6500

2

AC

3

G

P2

A10

L-FRONT-IN

A10

A5

R-FRONT-IN

A10

CVBS1-IN

SC1-LIN

SC1-RIN

STATUS2

11

Y-CVBS-IN

5

C-IN

L2-IN

R2-IN

A5

FM

VIF_1

VIF_2

SIF_1

SIF_2

RF_AGC

A13
A12

1
2

P1

1

2

2503

DC

7521
STP7NB60FP

6520

2521

3

4

D

5

S

8

3526

9

P3

HOT GROUND COLD GROUND

A5
A5
A9

A5
A9

A7

A10

A10

A10

A10

VIDEO IF, SOUND IF

18

19

22

23

24

SC1_LIN

LFRONT-IN

2

5520

3

4

SOURCE SWITCHING

LFRONT-IN

A12

L2-IN

A13

RFRONT-IN

A12

R2-IN

A13

CVBSFRONT-IN

A12

Y-CVBS-IN

A13

C-IN SS-C-IN

A13

7209, 7210

FM RADIO

DE-EMPHASIS

7200-A
TDA95XX

VIDEO

IF

AGC

QSS

SOUND

IF + AGC

SOUND

FM-DEMOD.

DE-EMPH.

1515

43

1

1

2

QSS MIXER
AM DEMOD.

7580

ENERGIZING

CIRCUIT

5562

17

16

5560 5564 5561

14

13

N.C.

12

11

N.C.

10

7515
TCET1103

4812

4814

VIDEO

PLL

DEMOD.

AUDIO

SWITCH

28 29

3594

7802
HEF4053BT

12
13

5
3

2
1

FMR

V

LOTAUX

6562

6561

7561, 7562
7564

PROTECTION

6560

A

SYY-CVBS-IN

VIDEO

AMPLIFIER

SOUND

AMPL.

+13V

A

3564

2564

7540, 6540

REFERENCE

CIRCUIT

7541, 7542

STANDBY

CIRCUIT

SC2-LIN

14

SC2-RIN

4

SY-CVBS-IN

15

SEL-MAIN-FRONT-RR

A10

A5

A5

38

33

48

+ AVL

3558

7560

31

P5

E/W PROTECTION

ERR

7

POWER DOWN

2561

3543

3544

A9

A9

V10

+8V

7206

MONO/AM_
MONO_SOUND

+3.9V

P4

+3.3V

2567

MAIN AUX

P6

140V

MAIN SUPPLY

VCONTROL

STDBY_CON

NICAM + 2CS + BTSC (STEREO/SAP) DECODER

A9

7834

QSS-AM-DEM-OUT

FMR

A11

A5
A13
A13
A10
A10

A7

A7

QSS_AM_DEM_OUT

3230

7835

MONO/AM-MONO-SOUND

3834 2847

SC1-L IN

SC1-R IN
SC2-L IN

SC2-R IN

3833

SDA

SCL

+8V

7201

3208

3211

A6

3832

AUDIO CARRIER

FILTERS

5201

1200

1201

7202

1202

RES.

A9A8

SYNCHRONISATION

A6

EHT info

A2

H flybk

A2

12V

EHT info

A2

A2

EHT o

A2

A2

(2X)

A7

TILT INTERFACE

A16

A2

TILT

A7

A7

7831
MSP34X5G

47

DEMODULATOR

NICAM + 2CS

BTSC, AM, FM

44

41

42
39

40

8

A7

7

4.5MHz NTSC

5.5MHz PAL
6MHz AP MULTI

6.5MHz AP PAL

3259

2254

3242

S1

3247

AUDIO

INPUT

SWITCHING

ERR

4

3213

7203

3210

7200-D
TDA95XX

11

31

34

7000
TDA8941P

25

24

31

30

4

51

52

V9

A10
A10
A13

COMB-BYPASS

VIDEO IDENT

H/V SYNC

SEPARATOR

H-OSC

+PLL

1

5

TILT OUTPUT

A10

A9

A8

2203

SS-C-IN

SSY-CVBS-IN

CVBS1-IN

9

GEOMETRY

H
V

GEOMETRY

VLOT AUX +13V

7

2

MAIN-OUT-L

MAIN-OUT-R

L OUT

A13

R OUT

A13

SEL-MAIN-FRNT-RR

1831
18M432

40

45

44

42

A7

5241

+8V

H-DRIVE

2nd LOOP

H-SHIFT

EW

+

V-DRIVE

+

7200-C
TDA95XX

SWITCHING

FILTERS

30

15

17

16

I/O

VIDEO

VIDEO
IDENT

A13

A10

S2

3251

S5

3250

S3

3244

S4

3249

0268
1

2

TILT
DEFL.
COIL

AUDIO AMPLIFIER

A8

MONO/AM_MONO-SOUND

A5

VOLUME MUTE

A7

MAINAUX_FB

A5

0257

COMPAIR
CONNECTION
(FOR SERVICE)

V4

47

Y-DELAY

R-Y

PAL/NTSC

SECAM

B-Y

DECODER

R-V-IN
G-Y-IN
B-U-IN
FBL-IN

H DRIVE

EW DRIVE/
EWD-DYN

V DRIVE+

V DRIVE-

7901 AN7522N (STEREO)

7902 AN7523N (MONO)

4905

3908

5205

MAINAUX

SDA

SCL

L+

L-

R-

R+

OR

0246
1

L+

2

L-

3

4

R-

5

R+

7205

3222

3221

Y

U

BASE

BAND

V

DELAY

LINE DEFLECTION

A2

V

LOTAUX

7462

L1

only for sets with E/W correction

7400

STP3NC60FP

3404

G

only for sets with panorama

A7

BASS_PANORAMA

3489

FRAME DEFLECTION

A3

F1

V DRIVE+

V DRIVE-

F2

A1

0280

62 L+

ERR

7

8

4L-

9

10 R-

1

12 R+

HEADPHONE

A12

L+

L-

R-

R+

OR

C1C

HEADPHONE

0254

1

2

3

4

5

V-OUT

+8V

RGB

MATRIX

RGB

INSERT

BLACK

STRETCH

WHITE

STRETCH

5251 5053 54

+13V MAIN AUX

3493

7461
7463

LINE-OUTPUT

DRIVER

STAGE

L4

D

S

3405

ERR

1400

7444

A1

7471
TDA8359J

1

V1+

2

V1-

FRAME

OUTPUT

A2

A3

A4

OR

R
G

B

7204

64696467

E/W

CIRCUIT

8

4

1

VCONTROL

V

LOTAUX

5

4

3

2

1

C2

0255

4

L+

3

L-

2

R-

1

R+

A13'

OSD

RGB

CONTROL

OSD TEXT

INSERT

BLUE

STRETCH

WHITE-P.

ADJ

EHT INFO

PROC.

5461

E/W PROTECTION

3

2

+13V

5472

3

6

VP

7

VOA

9

VM

4

VOB

SETS WITH
VIDEO OUT

R

56

G

57

B

58

55

MAIN SUPPLY

L3

7460

BU4508DX

L2

A7A1

2454

6470

V

GUARD

CIRCUIT

Q1

6692
TSOP1836

L

+3V3

ON/OFF

R

A12

6692
TSOP1836

+3V3

LOCAL

KEYBOARD

A9

L

E

LOCAL

R

KEYBOARD

ONLY

V5

3201

V6

3202

V7

3203

V9

3204

BKL BKL

3235

BKL-IN

A2

EHT info

140V

LINE
OUTPUT
CIRCUIT

ERR

1

+50V

V

LOTAUX

F3

5471

3479

3471

F4

FRONT INTFACE
(PARTLY)

1

6691

LED

FRONT CONTROL

C5

1

IR

6691

LED

KEYBOARD
_PROTN

KEYBOARD
_PROTN

B1

1

2

3

5

6

A2

3487

5451

0221
1

2

HOR.
DEFL.
COIL

3431

(OPTIONAL)

TV

PICTURE

WIDTH

CONTROL

ERR

3

V

GUARD

0222
1

2

VERT.
DEFL.
COIL

IR

02450243

1

2

3

44

5

6

+200VA

3

1

A2

CRT

CONTROL

A7

A1

POWER DOWN

STATUS1

A13

5445

3340

2340

6447

A13

OR
OR

KEYBOARD-

EW­PROTECTION

A2

0244

0220

10

6

5

11

7

12

8

9

3451

2444

OR

69

1
2

STATUS2

IR

67

5

LED

80

_PROTN

7606

ECO SCAVEM

B2

R
G

+

B

7330
TDA6107Q

2

V12

V11

1

V13

3

EHT-INFO

+13V

123 45

123 45

ABC D

EHT

FOCUS VG2

IF DAF PANEL IS MOUNTED

34693490

3494

6485

3488

6487

5480

3455

6488

7480

3447

6486

7441

3446

PROT

CIRCUIT

7443, 7450

3452

PROT

CIRCUIT

7200-B
TDA95XX

ROM
RAM

1/10

PAGES

MEMORY

TELE
TEXT

OSD

CVBS

5

3460

3464

+3.3V

66 61 59

I/O

IIC

BUS

TRANSCEIVER

I/O

PORTS

+

SYNC

ERR

5

PROCESSING

+200VA

3336

R

8

3334

G

9

3332

B

7

ERR

11

3341

3342

Filament

V

LOTAUX

L5

L7

L6

VT_SUPPLY

L9

7482

3450

L8

POWER-DOWN

ERR

2

5604

56035602

68 7

72

71

3

6

70

78

77

VST

73

PWM-

DAC

63

CPU

64

+13V

+200VA

SCAVEM

V14

V15

V16

ERR

+50V

A5 A6

EHT info

H flybk

VIDEO SUPPLY

200V

V

+50V

LOTAUX

FILAMENT

V

+5V A

LOTAUX

L10

+8V B

+13V

V

+13V

LOTAUX

V

A3

GUARD

BLK-IN

A5

EHT o

A6

7602
M24C08

EEPROM

(NVM)

ERR

+3.9V

36063607

3625

SDA

C4

3624

SCL

C5

COMB-BYPASS

COMB-SEL-CVBS0 or AV2

TREBLE-BUZZER-HOSP-APP

9641

9631

6601

C1

1660

12MHz

C2

0165

AQUADAG

8

R

6

G

11

B

10 9 5 7 1

FOCUS

G

0298

2

A

0221

1

2

A6

B

A4

D

C

A1

+3.3V

8
6
5

9

ERR

6

A4 A5

STANDBY-CON

BASS PANORAMA

VOLUME/MUTE

SDM

POWER-DOWN

TILT
3172
ON

A8

0278
1

SCAVEM

2

COIL

VG2

EHT

DAF (34" only)

0261

DAF

0233

CIRCUIT

5493

CL 36532039_012.eps

3611

36033604

SDA

SCL

A10

CRT

0258
1

2

EHT

A1

A2

A8

A1
A16

25kV

250403

A10

HOR.
DEFL.
COIL

A4
A8
A9