Samsung CL21M6WKX Manuel utilisateur

COLOR TELEVISION RECEIVER

Chassis : K57A(N)

Model : CL21M6WKX/XAO

CL21A11MQKXXAX

COLOR TELEVISION RECEIVER CONTENTS

Precautions

Specifications and IC Data

Disassembly and Reassembly

Alignment and Adjustment

Troubleshooting

Exploded View and Parts List

Electrical Parts List

Block Diagram

Wiring Diagram

Schematic Diagrams

10.

2-2 Samsung Electronics

2-2 IC Line Up

Specifications and IC Data

Loc. No

IC501

Table 2-1 IC Line-Up

IC202

PC801S

PC802S

SPM-464A TDA9592 PS/NI, SPM-464A,64P

IC201S Philips

Philips

FIAIR CHILD

VERTICAL OUTPUT

LA7845

TDA7297

IC301

IC602 SOUND-AMP (15W x 2CH)

IC801S KA5Q1265R POWER IC (STR)

IC802 KA7632 CUSTOM REGULATOR (5V, 8V, 3.3V)

IC101 LA7510 IF DETECTOR-IC TEMIC

IC601

ICP01

ICW01

ICG01

MSP-3425G-B8 Sound Processor

VIPER12AD1P PWM CONTROCER-IC

NJM2235D VIDEO Swiching-IC

4558 OP AMP-IC

Micronas

Sanyo

TDA6108QJF RGB DRIVE AMP

M24C08 EEPROM

TCET1108 / LTV817B PHOTO COUPLER

Specification Description Remark

Alignment and Adjustments

Samsung Electronics 4-1

4. Alignment and Adjustments

4-1 Preadjustment

4-1-1 Factory Mode

1. Do not attempt these adjustments in the Video

Mode.

2. The Factory Mode adjustments are necessary

when either the EEPROM (IC202) or the CRT

is replaced.

3. Do not tamper with the “Adjustment” screen

of the Factory Mode menu. This screen is

intended only for factory use.

4-1-2 When EEPROM (IC202) Is Replaced

1. When IC202 is replaced all adjustment data

revert to initial values. It is necessary to

re-program this data.

2. After IC202 is replaced, warm up the TV for

10 seconds.

4-1-3 When CRT Is Replaced

1. Make the following adjustments AFTER set-

ting up after setting up purity and conver-

gence :

White Balance

Sub-Brightness

Vertical Center

Vertical Size

Horizontal Size

Fail Safe (This adjustment must be the last

step).

2. If the EEPROM or CRT is replaced and set SC

as 30(factory mode).

4-2 Factory/Service Mode

4-2-1 Procedure for the “Adjustment” Mode

1. This mode uses the standard remote control.

The Service Mode is activated by entering the

following remote-control sequence :

(1) DISPLAY → FACTORY.

(2) STAND-BY → MUTE →1 →8 →2

→POWER ON.

2. The “SERVICE (FACTORY)” message will be

displayed. The Service Mode has four compo-

nents: ADJUST, OPTION , G2-ADJUST and

RESET.

3. Access the Adjustment Mode by pressing the

“VOLUME” keys ( Up or Down). The adjust-

ment parameters are listed in the accompany-

ing table, and selected by pressing the CHAN-

NEL keys ( , ).

4. Selection sequences for the all system:

DOWN or UP key:

SCT>SBT>BLR>BLB>RG>GG>BG>VSL>VS>

VA>HS>SC>CDL>STT>AKB>NDL>NSR>

SCBT>VOL>CAP>MVOL>RP00>RP01>

AGCS>OMD>SCL>PWL>MUS>AGC>

HPAR>HBOW>EWID>EPAR>EUCN>ELCN>

ETRP>VZ>SVM>VMA>SSP>PSNS>

DNSR>DSBT>DCDL>DBLR>DBLB>DSK

5. The VOLUME keys increase or decrease the

adjustment values (stored in the

non-volatile memory) when Adjustment Mode

is cancelled.

6. Cancel the Adjustment Mode by re-pressing

the “FACTORY” or “Power OFF” keys.

4-2-2 Main Adjustment Parameter

Alignment and Adjustments

4-2 Samsung Electronics

SCT Sub Cont rast 0 ~ 23

0~23

SBT Sub Bright ness

BLR

Black Level offset B

BLB

Black Level offset R

RG RedGain 0~63

GG Green Gai n 0 ~ 63

0~63

BG Blue Gai n 0 ~ 63

VSL Ver t ical Slope 0 ~ 63

VS Ver t ical Shif t 0 ~ 63

VA Vert ical Amplitude 0 ~ 63

HS Horizontal Shif t 0 ~ 63

SC S- Cor r ec t i on 0 ~ 63

CDL Cat hode Drive Level 0 ~ 15

STT Sub Tint 0 ~ 7

AKB AKB On / off 0 ~ 1

0~1

0~3

0~15

0~50

NDL NTSC Delay 0 ~ 15

NSR NTSC Sub color 0 ~ 23

SCBT Screen Brighrtness 0 ~ 63

VOL Volume pre set t i ng 0 ~ 63

0~63

CAP Caption Position

Melody Volume

Ratio Pre / overshoot

IF AGC Speed

Offset IF Demodulator

Soft Clipping Level

Peak White Limitting

Color Matrix

Automatic Gain Control

Horizontal Parallelogram

Horizontal Bow

EW Width

MVOL

RP00

RP01

AGCS

OMD

SCL

PWL

MUS

AGC

HPAR

HBOW

EWID

ADJ

FIX

ADJ

FIX

ADJ

FIX

ADJ

ONO S D F U N CT I ON R A N G E I N I T I A L D AT A SELECTION RE M ARK

Alignment and Adjustments

Samsung Electronics 4-3

0~63

0~20

0~23

0~16

0~63

DSK

BLB in DVD mode

Dynamic Skin Tone Control

BLR in DVD mode

CDL in DVD mode

SBT in DVD mode

NSR in DVD mode

Identification sens

Sub Sharpness

Amplitude of SVM Output

Delay of RGB to VM Output

Vertical Zoom

EW Trapezium

EW Lower Coner

EW Upper Coner

EW Parabola

0~1

0~3

EPAR

ELCN

EUCN

ETRP

SVM

VMA

SSP

PSNS

DNSR

DSBT

DCDL

DBLR

DBLB

ADJ

FIX

ONO S D F U N CT I ON R A N G E I N I T I A L D AT A SELECTION RE M ARK

Alignment and Adjustments

4-4 Samsung Electronics

4-2-3 Option Bytes

In the Service Mode, various can be selected via the Option Table. Example:

Option Table : xx xx

OSD

SYSTEM

VIDEO MUTE

ZOOM

AUTO POWER

AUDIO MUTE

START LANG.

HOTEL MODE

BULE SCREEN

V-CHIP

AV OPTION

TILT

DEMO

EXT COMB

V-Guard

SETTING

CT-N EN/SP/FR

OFF

NOR/ZOOM

OFF

ENGLISH

OFF

AV1/AV2/S-V/DVD

OFF

- Language

- Video Mute On/Off changing the channel

- Picture Size Option

- Master S/w Option

- Audio Mute On/ Off without signal

- Inital Language agter Factory Reset

- Hotel mode On/ Off

- Bule Screen On/ Off without signal

- V-CHIP ON/OFF (U.S.A)

- AV + S-V + DVD

- TILT ON/OFF

- DEMO ON/OFF

- External 2H-COM ON/OFF

- Vertical Guard ON/OFF (*MAIN PCB A LOT : OFF)

REMARK

Alignment and Adjustments

Samsung Electronics 4-5

4-3 Other Adjustments

4-3-1 General

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

up adjustment upon installation. Check the

basic characteristics such as height, horizontal

and vertical sync and focus.

2. The picture should have good black and white

details. There should be no objectionable

color shading; if color shading is present, per-

form the purity and convergence adjustments

described below.

3. Use the specified test equipment or its equiva-

lent.

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 isola-

tion transformer.

4-3-2 Automatic Degaussing

A degaussing coil is mounted around the pic-

ture 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 sec-

ond after the power is switched ON. If the set

has been moved or turned in a different direc-

tion, disconnect its AC power for at least 30

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 removing

power.

4-2-4 RESET

The Reset Mode is used during factory inspection.

Function Reset:

1. Picture Mode Dynamic

2. Sound Mode Custom

3. Auto Volume Off

4. Melody On

5. Surround Off

6. Turbo Sound Off

7. MTS Stereo

8. Language English

9. Caption Off

10. Timer Off

Alignment and Adjustments

4-6 Samsung Electronics

4-3-3 High Voltage Check

CAUTION: There is no high voltage adjustment on this chassis.

The B+ power supply must be set to +130 volts (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 cur-

rent).

3. The high voltage should not exceed 33KV.

4. Adjust the Brightness and contrast controls to

both extremes. Ensure that the high voltage

does not exceed 33KV under any conditions.

4-3-4 FOCUS Adjustment

1. Input a black and white signal.

2. Adjust the tuning control for the clearest pic-

ture.

3. Adjust the FOCUS control for well defined

scanning lines in the center area of the screen.

4-3-5 Cathode Voltage Adjustment

(Screen Adjustment)

1. Input a Toshiba pattern.

2. Go to service mode and select ‘G2-Adjust.

3. Adjust bottom VR of FBT to display

“SCREEN ADJUST : OK”

4. Use the Menu or Mute key to complete

G2 adjustment.

4-3-6 Purity Adjustment

1. Warm up the receiver for at least 20 minutes.

2. Plug in the CRT deflection yoke and tighten

the clamp screw.

3. Plug the convergence yoke into the CRT and

set in as shown in Fig. 4-2.

4. Input a black and white signal.

5. Fully demagnetize the receiver by applying an

external degaussing coil.

6. Turn the CONTRAST and BRIGHTNESS con-

trols to maximum.

7. Loosen the clamp screw holding the yoke.

Slide the yoke backward or forward to pro-

vide vertical green belt. (Fig. 4-3).

8. Tighten the convergence yoke.

9. Slowly move the deflection yoke forward,

and adjust for the best overall green screen.

10. Temporarily tighten the deflection yoke.

11. Produce blue and red rasters by adjusting the

low-light controls. Check for good purity in

each field.

12. Tighten the deflection yoke.

Samsung Electronics

Troubleshooting

5-1

5. Troubleshooting

5-1 No Power

LED Off

LED On

Abnormal

Normal

Abnormal

Counect

the Power code

Check

the

Power LED

Check the

X-tal,SDA,SCL port

of IC201S

Check the

(33)Pin (H-Drive)

of IC201S

Check the

130V- A Line

Check the

3.3V-A,8V-A Line

of IC201S

Check/Replace

IC802

Replace

IC201 S

Check the

FBT,D808

Check the

12.5V-A Line

Check the

FD802S, IC801S

or AC-Fuse

Check / Replace

Q401

5-2 Samsung Electronics

5-2 No Video (Sound OK)

Troubleshooting

Nornal

Abnormal

Check RK,GK,BK

Signal

Check R,G,B

Signal into CRT

PCB

Check the

resistance of R519

Check IC201S

Pin50(IK,V-GUARD)

Check IC501

B+(180V-B)

Check the

Voltage of heater

Check

CRT and FBT

Check/Replace

D407,FBT

Check IC301

+B Volt

Replace

R519

D406,R414,D405,R413

Check/Replace

IC301 Check/Replace

Check

CRT and FBT

Check/Replace

IC201S

Check/Replace

R418,R522,R523

Check IC201S

Pin 51,52,53

(R.G.B)

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