Samsung CW21A83NS8XEC Manuel utilisateur

COLOR TELEVISION RECEIVER

Chassis : KS3A(P) (REV. 2)

Model : CW21A83NS8XEC

WS28W8VDESXXEC

CW28C93WS8XXEG

WS28W73WS8XXEG

WS32W74WS8XXEG

COLOR TELEVISION RECEIVER CONTENTS

Precautions

Reference Information

Specifications

Alignment and Adjustments

Troubleshooting

Exploded Views and Parts List

Electrical Parts List

Block Diagrams

Wiring Diagram

Schematic Diagrams

10.

ELECTRONICS

©Samsung Electronics Co., Ltd. SEP. 2001

Printed in Korea

3KS3A-SEH-0917

Reference Information

Samsung Electronics 2-1

2. Reference Information

2-1 Tables of Abbreviations and Acronyms

dBm

°C

°F

°K

GHz

ips

kWh

kHz

kΩ

km/h

kVA

MHz

Ampere

Ampere-hour

Angstrom

Decibel

Decibel Referenced to One

Milliwatt

Degree Celsius

Degree Fahrenheit

degree Kelvin

Farad

Gauss

Gigahertz

Gram

Henry

Hertz

Hour

Inches Per Second

Kilowatt-hour

Kilogram

Kilohertz

Kilohm

Kilometer

Kilometer Per Hour

Kilovolt

Kilovolt-ampere

Kilowatt

Liter

Megahertz

MΩ

µA

µF

µH

µm

µs

µW

Ω

rpm

rps

Megavolt

Megawatt

Megohm

Meter

Microampere

Microfarad

Microhenry

Micrometer

Microsecond

Microwatt

Milliampere

Milligram

Millihenry

Milliliter

Millimeter

Millisecond

Millivolt

Nanofarad

Ohm

Picofarad

Pound

Revolutions Per Minute

Revolutions Per Second

Second (Time)

Volt

Volt-ampere

Watt

Watt-hour

Table 2-1 Abbreviations

Reference Information

2-2 Samsung Electronics

Table 2-2 Table of Acronyms

ABL

ACC

AFC

AFT

AGC

ANSI

APC

A/V

AVC

BAL

BPF

B-Y

CATV

CCD

CCTV

CRT

DVM

EIA

ESD

FBP

FBT

GND

G-Y

HI-FI

Automatic Brightness Limiter

Alternating Current

Automatic Chroma Control

Audio Frequency

Automatic Frequency Control

Automatic Fine Tuning

Automatic Gain Control

Amplitude Modulation

American National Standards Institute

Automatic Phase Control

Automatic Picture Control

Audio-Video

Automatic Volume Control

Balance

Bandpass Filter

Blue-Y

Community Antenna Television (Cable TV)

Citizens Band

Charge Coupled Device

Closed Circuit Television

Channel

Cathode Ray Tube

Continuous Wave

Direct Current

Digital Volt Meter

Electronics Industries Association

Electrostatic Discharge

Electrostatically Sensitive Device

Feedback Pulse

Flyback Transformer

Flip-Flop

Frequency Modulation

Fail Safe

Ground

Green-Y

High

High-Frequency

High Fidelity

Inductance-Capacitance

Integrated Circuit

Intermediate Frequency

I/O

LED

MOSFET

MTS

NAB

NEC

NTSC

OSD

PCB

PLL

PWM

QIF

R-Y

SAP

SAW

SIF

SMPS

S/N

TTL

UHF

VCD

VCO

VCXO

VHF

VIF

VTR

VTVM

Input/output

Left

Low

Light Emitting Diode

Low Frequency

Metal-Oxide-Semiconductor-Field-Effect-Tr

Multi-channel Television Sound

National Association of Broadcasters

National Electric Code

National Television Systems Committee

On Screen Display

Printed Circuit Board

Phase-Locked Loop

Pulse Width Modulation

Quadrature Intermediate Frequency

Right

Resistor & Capacitor

Radio Frequency

Red-Y

Second Audio Program

Surface Acoustic Wave(Filter)

Sound Intermediate Frequency

Switching Mode Power Supply

Signal/Noise

Switch

Test Point

Transistor Transistor Logic

Television

Ultra High Frequency

Underwriters Laboratories

Ultraviolet

Variable-Capacitance Diode

Voltage Controlled Oscillator

Voltage Controlled Crystal Oscillator

Very High Frequency

Video Intermediate Frequency

Variable Resistor

Video Tape Recorder

Vacuum Tube Voltmeter

Transistor

Table 2 - 3 IC Line - Up

DESCRIPTION

Video Processor

Multistandard Sound Processor

MICOM, TTX(MTP)

EEPROM

Audio AMP

RGB Drive AMP Hybrid IC

100Hz Horizontal Pulse AMP

Vertical IC

Horizontal Drive IC

E/W Drive IC

SPS Controllor

Bridge Diode

Photo Coupler

5V Controlled Regulator

Rectifier Diode

3.3V Regulator

6V Regulator

8V Controlled Regulator

3.3V Regulator

MICOM Reset IC

IIC Level Shifter

Main Tuner with IF Block

Sub Tuner with IF Block

Reference Information

Samsung Electronics 2-3

2-2 IC Line Up

LOC. NO

IC201S

IC601

IC901

IC902

IC602

HIC201

HIC202

HIC203

HIC204

HIC401

IC301

Q402

Q401

D414

IC401

Q404

IC801S

D801S

PC801S

IC802

D805

D806

D807

D802

IC201

IC804

IC803

IC903

IC904

Q909

Q910

TU01S

TU02S

BOARD

MAIN

SPEC

VDP3112B

MSP3411G

SDA555X

KS24L161

TDA7297

DRGB001

DDRI001

LA7845

KSC2073-H2

KSD5703

FMP-3FU

KA393

IRF620

3S1265R

RBV606

PC123Y

KA78R05

FML-G12S

FMG-G2CS

KA78RM33

KA7806

KA78R08

KA78RM33

KIA7025AP

2N7000

TCLS3101PD09A9(S)

TCPN3081PD09A(S)

REMARK

Refer to Table 2-3-1

Refer to Table 2-3-2

Refer to Table 2-3-3

VM Option

Option

HC401

HC801

VDPY

Refer to Table 2-3-4

Refer to Table 2-3-5

2-4 Samsung Electronics

Table 2 - 3 IC Line - Up

DESCRIPTION

Trans Switching

Trans FBT

Video Output AMP R.G.B Drive

Push-Pull (VM)

TR-Power (TILT)

OP-AMP (TILT)

OP-AMP

TR-Power

Video Switching IC with Adder Output

High-end Picture-In Picture IC

3.3V Regulator

LOC. NO

T801S

T444S

IC501

IC502

IC503

QF04

QF05

QG02

QG03

ICG01

ICH01

QH01

ICS01

ICP01

ICP02

SPEC

AA26-00046A

FUJ-29B001

TDA6111Q

2SC2344

2SA1011

KSA940

KSD2073-H2

KA4558

2SC4636RB

TEA6425

SDA9489X

EZ1086CM

REMARK

Refer to Table 2-3-6

Refer to Table 2-3-7

Option

BOARD

MAIN

CRT

DOUBLE

FOCUS

V-S/W

PIP

Reference Information

Samsung Electronics 2-5

SPEC

VDP3108B

VDP3112B

VDP3120B

VDP3130Y

VDP3140D

FUNCTION

50Hz Basic

50Hz, 2H Comb Filtr

50Hz, 2H Comb Filter, Horizontal Scaler

50Hz, 2H Comb Filter, DVD Input

100Hz

REMARK

Table 2-3-1 VIDEO IC (IC201S)

SPEC

MSP3400D

MSP3410D

MSP3411G

FUNCTION

Multistandard, A2 Stereo

Multistandard, A2 Stereo, Nicam

Multistandard, A2 Stereo, Nicam, Vitual Dolby

REMARK

SPEC

TDA7297

FUNCTION

15W x 2CH, 10W x 2CH

REMARK

SPEC

TCLS3101PD09A(S)

TCPS3001PD09D(S)

TCPS3001PD09E(S)

FUNCTION

CS with LNA Function

REMARK

Main

India

SPEC

TCPS3000PC09B(S)

FUNCTION

REMARK

Sub

TCPS3001PD09A(S) is out-of-date, TCPS3001PD09D(S) which is up-to-date has the same function.

Table 2-3-2 SOUND IC (IC601)

Table 2-3-3 SOUND AMP (IC602)

Table 2-3-4 1’st TUNER (TU01S)

Table 2-3-5 2’nd TUNER (TU02S)

Note

Reference Information

2-6 Samsung Electronics

SPEC

FUJ-29B001

FUH-29A001B

FUNCTION

29”

21”

REMARK

Table 2-3-6 TRANS

SPEC

AA26-00046A

AA26-00044C

FUNCTION

29”

21”

REMARK

Table 2-3-7 TRANS FLYBACK (FBT)

Alignment and Adjustments

Samsung Electronics 4-1

4. Alignment and Adjustments

4-1 General Alignment Instructions

1. Usually, a color TV-VCR needs only slight

touch-up adjustment upon installation. Check

the basic characteristics such as height,

horizontal and vertical sync and focus.

2. Observe the picture for good black and white

details. There should be objectionable color

shading; if color shading is present,

demagnetize, perform purity and convergence

adjustments described below.

3. Use the specified test equipment or its

equivalent.

4. Correct impedance matching is essential.

5. Avoid overload. Excessive signal from a

sweep generator might overload the front-end

of the TV. When inserting signal markers, do

not allow the marker generator to distort test

results.

6. Connect the TV only to an AC power source

with voltage and frequency as specified on the

backcover nameplate.

7. Do not attempt to connect or disconnect any

wires while the TV is turned on. Make sure

that the power cord is disconnected before

replacing any parts.

8. To protect against shock hazard, use an

isolation transformer.

4-2 Automatic Degaussing

A degaussing coil is mounted around the

picture tube, so that external degaussing after

moving the TV should be unnecessary. But

the receiver must be properly degaussed upon

installation.

The degaussing coil operates for about 1

second after the power is switched ON. If the

set is moved or turned in a different direction,

the power should be OFF for at least 10

minutes.

If the chassis or parts of the cabinet become

magnetized, poor color purity will result. If

this happens, use an external degaussing coil.

Slowly move the degaussing coil around the

faceplate of the picture tube and the sides and

front of the receiver. Slowly withdraw the coil

to a distance of about 6 feet before turning

power OFF.

If color shading persists, perform the

following Color purity and Convergence

adjustments.

4-3 High voltage Check

CAUTION : There is no high voltage adjustment

on this chassis. The B+ power supply should be

+135 volts (with full color- bar input and normal

picture level).

1. Connect a digital voltmeter to the second

anode of the picture tube.

2. Turn on the TV. Set the Brightness and

Contrast controls to minimum (zero beam

current).

3. Adjust the Brightness and contrast controls to

both extremes. Ensure that the high voltage

does not exceed 32 KV under any conditions.

Alignment and Adjustments

4-2 Samsung Electronics

4-5 SCREEN Adjustment

1. Input Toshiba Pattern

2. Enter “Service Mode”.(Refer to “Service Mode”)

3. Select “G2-Adjust”.

4. Set the values as below.

4-4 Dynamic Focus Adjustment

1. A dynamic focus adjustment should be done

after replacing the CRT PCB, FBT or CRT.

2. Input a crosshatch pattern.

3. Enter “ STANDARD “ in video mode.

4. Turn the Dynamic focus VR fully clockwise

(maximum).( )

5. Turn the Static focus VR fully

counterclockwise (maximum).( )

6. Slowly turn the static focus VR

counterclockwise. Adjust until the

vertical line in the middle of the screen

has maximum clarity.( )

7. Slowly turn the dynamic focus VR (clockwise)

and adjust the 3rd horizontal line for

maximum clarity.( )

8. Repeat 4-7, if necessary.

STATIC FOCUS VR

DYNAMIC FOCUS VR

SCREEN

❷

❶

❷

❶❷

❶

❷

❶

29 Inch

IBRM = 220

WDRV = 35

CDL = 220

COLR G B = 150 150 150

21 Inch

IBRM = 220

WDRV = 35

CDL = 165

COL = 70

Ce manuel convient aux modèles suivants

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