Philips 21PT8868/94 Schematic

Colour Television Chassis

SK4.0A

CA

H_17210_000.eps

070607

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 9

6. Block Diagrams, Test Point Overviews, and

Waveforms

Block Diagram Chassis 11
Schematic Overview Chassis 12

7. Circuit Diagrams and PWB Layouts
Mono Carrier: Power Supply (A1) 13 21-22
Mono Carrier: Line Deflection (A2) 14 21-22
Mono Carrier: Frame Deflection (A3) 15 21-22
Mono Carrier: Tuner IF (A4) 16 21-22
Mono Carrier: AV Switch (A5) 17 21-22
Mono Carrier: Audio Amplifier (A6) 19 21-22
Mono Carrier: Tone Control (Optional) (A7) 18 21-22
Mono Carrier: CPU & Decoder (A8) 20 21-22
Keyboard Control Panel (D) 23 24
Main Switch Panel (E) 25 25
Side A/V Panel (G) 26 26
Slim EW Panel (M) 27 27
Sub Woofer Panel (Optional) (Z) 28 29

8. Alignments 31

9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets 35
Abbreviation List 35
IC Data Sheets 37

10. Spare Parts List 49

11. Revision List 52

©

Copyright 2007 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.

Published by JY 0766 BG CD Customer Service Printed in the Netherlands Subject to modification EN 3122 785 17210

EN 2 SK4.0A CA1.

Technical Specifications, Connections, and Chassis Overview

1. Technical Specifications, Connections, and Chassis Overview

Index of this chapter:

1.1 Technical Specifications

1.2 Connection Overview

1.3 Chassis Overview (Mechanical chassis)

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

1.1 Technical Specifications

1.1.1 Vision

Display type : CRT
Screen size : 21” (55 cm), 4:3
Tuning system : PLL
TV Colour systems : PAL B/G, D/K, I
Video playback : NTSC M/N 3.58, 4.43

: PAL 50
Presets/channels : 200 channels
Tuner bands : VHF

: UHF

1.1.2 Sound

Sound systems : FM-stereo
Maximum power (W

1.1.3 Miscellaneous

Power supply:

- Mains voltage (V

- Mains frequency (Hz) : 50 / 60

Ambient conditions:

- Temperature range (°C) : -5 to +45

- Maximum humidity : 90% R.H.

Power consumption

- Normal operation (W) : ≈ 62

- Stand-by (W) : < 3

):2 x 3

RMS

) : 160 - 260 (/93)

AC

: 90 - 260 (/94)

1.2 Connection Overview

Note: The following connector colour abbreviations are used

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

1.2.1 Rear and Side Connections

H_17210_023.eps

Figure 1-1 Rear and Side Connections

Cinch: Video CVBS - Out, Audio - Out

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

Cinch: Video CVBS - In, Audio - In

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

Cinch: Video YPbPr - In

Gn - Video Y 1 V
Bu - Video Pb 0.7 V
Rd - Video Pr 0.7 V

Aerial - In

- - IEC-type (EU) Coax, 75 ohm D

Cinch: Video CVBS - In, Audio - In

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

/ 75 ohm kq

PP

/10 kohm kq

RMS

/ 10 kohm kq

RMS

/ 75 ohm jq

PP

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

/ 75 ohm jq

PP

/ 75 ohm jq

PP

/ 75 ohm jq

PP

/ 75 ohm jq

PP

/ 10 kohm jq

RMS

/ 10 kohm jq

RMS

080607

Technical Specifications, Connections, and Chassis Overview

1.3 Chassis Overview (Mechanical chassis)

EN 3SK4.0A CA 1.

CRT PANEL

B

POWER SUPPLY

A1

LINE DEFLECTION

A2

FRAME DEFLECTION

A3

A4

TUNER IF

AV I/O

A5

TONE CONTROL

A6

(Optional)

AUDIO AMPLIFIER

A7

CPU AND DECODER

A8

MONO

CARRIER

FRONT CONTROL PANEL

SIDE AV PANEL

MAIN SWITCH

PA NE L

12

9

H_17210_028.eps

Figure 1-2 PWB location

D

G

E

130607

EN 4 SK4.0A CA2.

Safety Instructions, Warnings, and Notes

2. Safety Instructions, Warnings, and Notes

Index of this chapter:

2.1 Safety Instructions

2.2 Maintenance Instructions

2.3 Warnings

2.4 Notes

2.1 Safety Instructions

Safety regulations require the following during a repair:

• Connect the set to the Mains/AC Power via an isolation

transformer (> 800 VA).

• Replace safety components, indicated by the symbol h,

only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.

• Wear safety goggles when you replace the CRT.

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

• General repair instruction: as a strict precaution, we advise

you to re-solder the solder connections through which the
horizontal deflection current flows. In particular this is valid
for the:

1. Pins of the line output transformer (LOT).

2. Fly-back capacitor(s).

3. S-correction capacitor(s).

4. Line output transistor.

5. Pins of the connector with wires to the deflection coil.

6. Other components through which the deflection current
flows.

Note: This re-soldering is advised to prevent bad connections
due to metal fatigue in solder connections, and is therefore only
necessary for television sets more than two years old.

• Route the wire trees and EHT cable correctly and secure
them with the mounted cable clamps.

• Check the insulation of the Mains/AC Power lead for
external damage.

• Check the strain relief of the Mains/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 Mains/AC
Power plug and the secondary side (only for sets that have
a Mains/AC Power isolated power supply):

1. Unplug the Mains/AC Power cord and connect a wire

between the two pins of the Mains/AC Power plug.

2. Set the Mains/AC Power switch to the "on" position

(keep the Mains/AC Power cord unplugged!).

3. Measure the resistance value between the pins of the

Mains/AC Power plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 Mohm and 12 Mohm.

4. Switch "off" the set, and remove the wire between the

two pins of the Mains/AC Power plug.

• Check the cabinet for defects, to prevent touching of any
inner parts by the customer.

2.2 Maintenance Instructions

We recommend a maintenance inspection carried out by
qualified service personnel. The interval depends on the usage
conditions:

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

• When a customer uses the set in an environment with
higher dust, grease, or moisture levels, for example in a
kitchen, the recommended interval is one year.

• The maintenance inspection includes the following actions:

1. Perform the “general repair instruction” noted above.

2. Clean the power supply and deflection circuitry on the
chassis.

3. Clean the picture tube panel and the neck of the picture
tube.

2.3 Warnings

• In order to prevent damage to ICs and transistors, avoid all
high voltage flashovers. In order to prevent damage to the
picture tube, use the method shown in figure “Discharge
picture tube”, to discharge the picture tube. Use a high
voltage probe and a multi-meter (position V
until the meter reading is 0 V (after approx. 30 s).

V

E_06532_007.eps

250304

Figure 2-1 Discharge picture tube

• All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD w). Careless handling
during repair can reduce life drastically. Make sure that,
during repair, you are connected with the same potential as
the mass of the set by a wristband with resistance. Keep
components and tools also at this same potential. Available
ESD protection equipment:
– Complete kit ESD3 (small tablemat, wristband,

connection box, extension cable and earth cable)
4822 310 10671.

– Wristband tester 4822 344 13999.

• Be careful during measurements in the high voltage
section.

• 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 prevents circuits
from becoming unstable.

2.4 Notes

2.4.1 General

• Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (H), or hot ground (I), depending
on the tested area of circuitry. The voltages and waveforms
shown in the diagrams are indicative. Measure them in the
Service Default Mode (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz for PAL, or

61.25 MHz for NTSC (channel 3).

• Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in stand-by (F). These values are
indicated by means of the appropriate symbols.

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

• Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the “double-D symbol”, are
trademarks of Dolby Laboratories.

). Discharge

DC

Safety Instructions, Warnings, and Notes

EN 5SK4.0A CA 2.

2.4.2 Schematic Notes

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

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

• All capacitor values are given in micro-farads (μ= x10
nano-farads (n= x10

-9

), or pico-farads (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 Spare Parts
List. Therefore, always check this list when there is any
doubt.

2.4.3 Lead-free Soldering

Due to lead-free technology some rules have to be respected
by the workshop during a repair:

• Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.

• Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able:
– To reach a solder-tip temperature of at least 400°C.
– To stabilize the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.

• Adjust your solder tool so that a temperature of around
360°C - 380°C is reached and stabilized at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will increase drastically and flux-fluid will be destroyed.
To avoid wear-out of tips, switch “off” unused equipment or
reduce heat.

• Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to
avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.

-12

2.4.5 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

-6

),

).

dangerous in themselves, they can cause unexpected
reactions that are best avoided. Before reaching into a
powered TV set, it is best to test the high voltage insulation.
It is easy to do, and is a good service precaution.

2.4.4 Alternative BOM identification

In September 2003, Philips CE introduced a change in the way
the serial number (or production number, see Figure 2-2) is
composed. From this date on, the third digit in the serial
number (example: AG2B0335000001) indicates the number of
the alternative BOM (Bill of Materials used for producing the
specific model of TV set). It is possible that the same TV model
on the market is produced with e.g. two different types of
displays, coming from two different O.E.M.s.
By looking at the third digit of the serial number, the service
technician can see if there is more than one type of B.O.M.
used in the production of the TV set he is working with. He can
then consult the At Your Service Web site, where he can type
in the Commercial Type Version Number of the TV set (e.g.
28PW9515/12), after which a screen will appear that gives
information about the number of alternative B.O.M.s used.
If the third digit of the serial number contains the number 1
(example: AG1B033500001), then there is only one B.O.M.
version of the TV set on the market. If the third digit is a 2
(example: AG2B0335000001), then there are two different
B.O.M.s. Information about this is important for ordering the
correct spare parts!
For the third digit, the numbers 1...9 and the characters A...Z
can be used, so in total: 9 plus 26 = 35 different B.O.M.s can
be indicated by the third digit of the serial number.

EN 6 SK4.0A CA3.

3. Directions for Use

You can download this information from the following websites:

http://www.philips.com/support
http://www.p4c.philips.com

Directions for Use

4. Mechanical Instructions

Mechanical Instructions

EN 7SK4.0A CA 4.

Index of this chapter:

4.1 Set Disassembly

4.2 Assembly / Board Removal

4.3 Set Re-assembly

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

4.1 Set Disassembly

Follow the disassemble instructions in described order.

4.1.1 Rear Cover Removal

Warning: disconnect the mains power cord before you remove

the rear cover.

1. Remove all the fixation screws of the rear cover.

2. Now, pull the rear cover backwards and remove it.

4.2 Assembly / Board Removal

4.2.1 Side I/O Panel removal

1

H_17210_025.eps

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Figure 4-1 Rear Cover removal

H_17210_032.eps

110607

Figure 4-2 Side-I/O panel removal

1. Disconnect the sidepanel cable from the mono carrier and
remove the cable from it’s strain reliefs.

2. Then, remove the two fixation screws (1) and remove the
board.

EN 8 SK4.0A CA4.

4.2.2 Power Switch removal

1

Figure 4-3 Power switch removal

1. From the mono carrier disconnect the main power, the
degaussing coil, the speakers, the front control panel, the
side I/O panel and deflection coil cables. Release the main
power cord and the side I/O panel cable from it’s strain
reliefs. Pull out the mono carrier and place it sidewards.
This enables the removal of the power switch panel.

2. Then, remove the two fixation screws (1) of the power
switch panel and remove the board.

Mechanical Instructions

H_17210_026.eps

080607

4.2.3 Front Control Panel removal

1

1

Figure 4-4 Front Control Panel removal

1. From the mainboard disconnect the main power, the
degaussing coil, the speakers, the front control panel, the
side I/O panel and deflection coil cables. Release the main
power cord and the side I/O panel cable from it’s strain
reliefs. Pull out the mono carrier and place it sidewards.
This enables the removal of the front control panel.

2. Then, remove the four fixation screws (1) of the Front
Control panel and remove the board.

1

1

H_17210_027.eps

080607

4.3 Set Re-assembly

To re-assemble the whole set, do all processes in reverse
order.
Be sure that, before the rear cover is mounted:

• The mains cord is positioned correctly in its guiding
brackets (make sure that the strain reliefs are replaced in
its correct position and that it will function correctly!).

• All wires/cables are returned in their original positions.

Service Modes, Error Codes, and Fault Finding

5. Service Modes, Error Codes, and Fault Finding

EN 9SK4.0A CA 5.

Index of this chapter:

5.1 Test Points

5.2 Service Modes

5.3 Error Codes

5.4 Fault Finding

5.1 Test Points

See chapter 6 "Block Diagrams, Testpoint Overviews, and
Waveforms".

Perform measurements under the following conditions:

• Service Default Mode.

• Video: colour bar signal.

• Audio: 3 kHz left, 1 kHz right.

5.2 Service Modes

This chassis does not contain a specific Service Mode. Service
and Alignment of the TV set can be done via the Factory Mode
by the service technician, see further down in this manual.

5.3 Error Codes

Not applicable.

5.4 Fault Finding

5.4.1 Power on Failure

5.4.6 Picture not or incorrect Coloured

• Check the circuit from IC201 to R.G.B. three gun circuit.

• Check the IC soldering and relevant circuitry on physical
damage or check for defective capacitors.

5.4.7 Picture with Horizontal Bright Line and Sound

Check both supply voltages of vertical IC301 and relevant
circuitry on correctness. Also check the vertical synchronizing
signal from IC201.

5.4.8 Remote Control Malfunction

Check the voltage on pin 64 of IC201. The normal value should
be 5.15 V. If this is correct check front control panels soldering
connections. If can't be solved, check the remote control,
crystal or transmitting diode of the remote control are in good
condition.

5.4.9 No Sound

Check power supply of sound IC (IC402) and relevant circuitry
(not exclude IC402 to be defective) or change speakers.

5.4.10 Poor Sound Quality

Check the sound system after searching the channel which
should set at DK, I or AUTO. If still has problem, check
accompany board circuit on chassis good or not.

Check whether the power supply is working properly and
whether the values of voltages normal. If those are correct,
check line transistor and transformer are working properly or
check fore or back line for defects.

5.4.2 Horizontal Deflection Transistor Defective: No Picture, No Sound.

To find the fault for a defect horizontal deflection transistor
please check the following items:

• Over voltage to breakdown.

• Over current to burn.

• Horizontal frequency too low.

• Horizontal drive inefficient.

5.4.3 Picture Interference

• Check if the signal line contact is good.

• Change Tuner if is necessary.

5.4.4 Can't find any TV program

Checking method: Check the closed circuit from tuner to
picture decoder IC to detect whether there are defective
components. Or check whether the resistance of R117, R118,
R203 and R204 has increased which also could cause the
problem.

5.4.5 No Good Picture or Double Image

Check the correctness of the signal from IF1/IF2 to Q101 and
relevant circuit. In this case the problem can be Q101 and/or
SAW101.

EN 10 SK4.0A CA5.

Personal Notes:

Service Modes, Error Codes, and Fault Finding

E_06532_012.eps

131004

Block Diagrams, Test Point Overviews, and Waveforms

A1

A2

A3

B

D

E

G

M

A6

A7

A5

A8

6. Block Diagrams, Test Point Overviews, and Waveforms

Block Diagram Chassis

1

2

EN 11SK4.0A CA 6.

6543

Y

ANTENNA

D

SCART 1

V in

UV

AUDIO

REAR AV SIDE AV S-VHS

RLV

V

LR

YC

AV OUT

VLR

D

A7

LR

V

RGB

FS TUNER

C

IF

AV2 SW

IF AMP SAW101

AV1 SW

AV3 SW

4
62
63

AV in

IF

C in

CVBS OUT

SCL

SDA

FM

MTS/A2/NICAM

15
2

5
14

1
12

10
9

411

A5

3

SCL

L

R

SDA

13

AV-SW 4052

A6

TONE CONTROL

L

R

AMP-TDA9841/9842/9843

SPL

SPR

C

PHILIPS UOC2

SCL

A4

KEY CONTROL

SDA

PWM CONTROL AUDIO VOL

MUTE

AUDIO OUT

SCART ID

TDA93XX/N3

6KEY

7
10

I/O

44
5

A8

B

R

G

B

IK

R OUT

G OUT

B OUT

21" CRT

CRT BOARD

B

V--DY

A3

V AMP TDA4863AJ

H--DY

-12V+12V

SW

POWER

CQ0765

+110V FOR B+

+43V

+8V FOR UOC

SCL

24C08

SDA

90V-260V

A1

A

1234 65

+12V FOR MAIN

+20V FOR AMP

DEG COIL

SLIM PART

H DRIVE

A2

3DD5023

H_17210_024.eps

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A

Block Diagrams, Test Point Overviews, and Waveforms

Schematic Overview Chassis

EN 12SK4.0A CA 6.

H_17210_022.eps

080607

Circuit Diagrams and PWB Layouts

7. Circuit Diagrams and PWB Layouts

Mono Carrier: Power Supply

EN 13SK4.0A CA 7.

321

4

A1 A1

POWER SUPPLY

D

RL601

RELAY

C607

15mH

C603

0.22uF

AC2 50V

C602

0.22uF/250V

R601

RES

SR601

GAS DISCHARGE

T602

T60 1

C601

0.22uF/250V

VDR601

RST601

RES1

GSTT601

Rs

23

RT602

Rp

9RM

1

C

C603

0.1uF/250V

L2

PFC 15mH×2

CN602

DEGA US S ING

F601

B

N

CN601

BLUE

2

T3.15A

AC250V

1

AC9 0-27 0V

BROWN

L

4700pF

D607

D606

C606

4700pF

R602

2

200K

R604
39K

D602

L601

10U H

C633

CAP

1

D

5

3

4

VCC

S/GN D

O LP/SS

IC601

C608

4700pF

D608

D605

C609

C605

4700pF

220uF

450V

FB601

R606

C611

0.1uF

6

R605

220

7

FB

OCP/BD

ZD604

6K8

C612

470pF

C613
10nF

C610
10uF

18V

R607

D603

BA1 58

22

R608

2K2

STR-W 65 54

D618

1N4148

T603

16 1

15

2

14

13

12

11

10

TRANSFORMER

IC6 02

OPTOISO1

R609

8.2M

C614 0.0022uF

R635

10

Q607
C1815

R238

6.8K

R619

1K/1W

SOUND

+22V_VCC

+33V_BT

+48V_VCC

R618

0.22 2W

C637

680pF 500V

D613

RU4 YX

C623
1000uF

25V

C627
1000uF

25v

C629

47uF 16V

R634

33K

C630
47uF

R636

10K

3

R611

100

680pF 500V

D622

BYW 36

C619

680pF 500V

D621

BA158

560pF 2KV

C618

C620

D620

RU4B

R612

C625
1000uF

C622
470uF

C621

100uF

200V

C626

1000uF

+115v

R615
200K

R617

4

12V

0.22 2W

6

R616

0.22 2W

<45V>

7

89

2.2K

VR601

1K

RGP1 0D

D615

R630

R

Q606

1013A

R632
1K

R633

10K

D609

J6 25

4148

3V6

C615

R613

10K

0.1U

K

R

Q601

TL431

A

C1815

R639

10K

Q603

R624

10K

R625
1K

D617

4148

Q604

C1815

R626

1K

C627A

Q608

1013A

R621

22

OFF

IC6 04

In Ou t

Gn d

L7808

Q602

1815

R622

820

180

R638

D611

3V9

ON

C628

C628A

D615

R

1000uF 25V

1000uF 25V

C630
R

C632
CAP

+5V_VCC

+8V_ VCC

+3.3V_VCC

STANDBY

D

C

B

A

5800 A3P610-00

1 2 3 4

H_17210_001.eps

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A

Circuit Diagrams and PWB Layouts

Mono Carrier: Line Deflection

EN 14SK4.0A CA 7.

321

4

A2 A2

D

C

B

LINE DEFLECTION

+8V_ VCC

R401

4K7

R403

NC

R325

100

EW

R324

100

H-ou t

Q450

C2482

R323

75K

R327

2K7

C321

2200pF

500V

+48V_VCC

C322

220pF

500V

Q303
F630

!

C323

1uF

160V

T302

BCL

EHT

CN30 1

5

6

EHT

!

+V

-V

!

+135V_VCC

C309

C300

R454

33

Q302

D5032

4.7UF 250V

!

C314

!

2n7 /2KV

470PF 500V

C315

7n2

2KV 2KV

BCL

T0
CRT

1

2

3

4

180V

CRT G ND

R301

0.33

2W

R302

0.33

D308

R314

2158

0.22 2W

L432

790mH

!

C316
6n8

C312

D302

BY22 8

C317

564

D311
RU4B

!

!

273J/630V

R315

4.7K

HEATER

GND

L302

34mH

C318

274J/400V

L301

105mH

+V

-V

6

HEATER

M

GND

2

B+

10

180V

R321
1K

C319

681

1

HY

C325

364J/400

T402

D309

1N4148

R318
680

!

R317

220

R310

560K

D305

MTZJ 20

3

4

7

AFC

R319

3.9K

R316

4.7K

C310

27PF/50V

D306

8V2

AFC

AFC

9

5

FOCUS

SCREEN

FLYBAC K

FOCUS

D307
1N4148

D205

1N4148

R250

2.2K

SCREEN

ABL

R312

1K

C308

0.1U

8

R245
1K

C238

4.7U/50V

+8V_ VCC

D

C

B

A

5800 A3P610-00

R322

6. 8 2W

C477

4.7uF

50V

L303

400uH

1 2 3 4

H_17210_002.eps

070607

A

Circuit Diagrams and PWB Layouts

Mono Carrier: Frame Deflection

EN 15SK4.0A CA 7.

321

4

A3 A3

D

FRAME DEFLECTION

CN301

IC3 01

!

TDA4863AJ

6

5

!

INP

INN

V out

VP4 -13V4Vp3 pump

7

6

5

C

VDRA

VDRB

C216

CAP

C215
CAP

B

EHT

R255

100

R256

100

D301

R305

1K8

R326

10K

R308

1K8

+8V

Q301

3

C305

100uF/50V

D304
BA158

R304

220/1W

R303

VP3-

VP1 +13V

2

1

C306

0.1uF/100V

R309

270 1W

R306

220/2W

C302

0.1uF

C307

0 . 1uF / 10 0V

1000uF/ 25V

1

C304

100V

R307

2W

C301

0.1uF

C303
1000uF/25V

BA158

D302

BA158

D303

C302

470pF

C301

470pF

v+

v-

D

C

B

A

5800 A3P610-00

A

H_17210_003.eps

110607

1 2 34

Mono Carrier: Tuner IF

Circuit Diagrams and PWB Layouts

EN 16SK4.0A CA 7.

E

D

C

A4

TUNER IF

A101

IF

NC

BT+33V

GND

BM+5V

SDA

SCL

R105

1.5K

C703

47/50V

R106

68

IC703

UPC574

R703

10K

C107

10n

L201

C109
10n

R107

1.2K

R108

4.7K

R109

1.2K

LC101

31.9M

NTSC-M

Q101

KSC1674C

C109

0.01U

C108

100pF

R111
470

R110
10

R112

10

L101J

4321

5

A4

Q102

C1815

10K

R114
10K

R113

220

1UH

R116

2.2K

R213
100

C204

0.01U

Q103

C1815

R115

SYSTEM

SYSTEM

SYSTEM

1

SYSTEM1

SIF SAW102

SIF SAW102

E

D

C

B

38MHZ

A

5800 A3P610-00

38.9MHz

SAS

NC

AGC

C103

10U/16V

R215

680

R102

15K

R101
27K

100U/16V

C105

10UH

C104

100U/16V

+33V_BT

+8V_VCC

TUNER AGC

SDA

SCL

+33V_BT

+8V_VCC

TUNER AGC

SDA

SCL

B

A

H_17210_004.eps

110607

1 2 3 45