Samsung CS21A9W2QS/MUR Manual de usuario

COLOR TELEVISION RECEIVER

Chassis : KS1C(P)

Model : CS21A9W2QS/MUR

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. Jul. 2003

Printed in Korea

AA82-00868A

This Service Manual is a property of Samsung Electronics Co.,Ltd.

Any unauthorized use of Manual can be punished under applicable

International and/or domestic law.

8. Block Diagrams

Samsung Electronics

Block Diagrams

8-1

TUNER

A/V

DVD

U. O. C

PLUS

EEPROM

VERTICAL

AMP

H- OUT TR

AUDI O

AMP

10W X 2CH

FBT

S/ W

TRANS

AC/DC

Converter

SMPS

CONT

ROLER

KA7632

CRT 21" FLAT

SPEAKER

VI DEO

AMP

130V

13V

To FBT B+

To Sound AMP B+

UOC

RGB

V-Dri ve

H-Dri ve

Pr e-

AMP VIF SAW

+S/W

3. 3V

TUNER

JACK

RCA

SIFSAW

+S/W SIF

MSP

180V

16. 5V

PCB : 245 X 245

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 30 KV under any conditions.

Alignment and Adjustments

4-2 Samsung Electronics

4-4 FOCUS Adjustment

1. Iput a black and white signal.

2. Adjust the tuning control for the clearest picture.

3. Adjust the FOCUS control for well defined scanning lines in the center area of the screen.

4-5 Factory Adjustment

1. To enter the “Service Mode”, Press the remote-control keys in this sequence :

- If you do not have Factory remote-control

- If you have Factory remote-control

PICTURE OFF PICTURE ON

DISPLAY() MENU MUTE

PICTURE ON DISPLAY() FACTORY

4-5-1 Service Mode

4-5-2 Factoy Mode OSD

ADJUST

OPTION 52 2A 48

G2-ADJUST

RESET

SPM-836EAN 2002/XX/XX

AGC

SCT

SBT

BLR

BLB

VSL

CDL

STT

AKB

PDL

NDL

PSR

NSR

VOL

LCO

TXP

MVOL

FMWS

AGCS

OMD

SCL

PWL

AGN

PEK

ACL

FCO

SCBT

SSP

PSNS

DPSR

DNSR

DSBT

DCDL

DBLR

DBLB

4-5-2(A) ADJUST

Alignment and Adjustments

Samsung Electronics 4-3

OSD

AGC

SCT

SBT

BLR

BLB

VSL

CDL

STT

AKB

PDL

NDL

PSR

NSR

VOL

LCO

TXP

MVOL

FMWS

AGCS

OMD

SCL

PWL

AGN

PEK

ACL

FCO

SCBT

SSP

Range

0 ~ 63

0 ~ 23

0 ~ 63

0 ~ 15

0 ~ 7

0 ~ 1

0 ~ 15

0 ~ 23

0 ~ 63

0 ~ 1

0 ~ 15

0 ~ 50

0 ~ 1

0 ~ 3

0 ~ 63

0 ~ 3

0 ~ 15

0 ~ 1

0 ~ 3

0 ~ 1

0 ~ 63

0 ~ 23

1Eh(D5-D0)

1Dh

1Bh

14h(D5-D0)

15h(D5-D0)

16h(D5-D0)

17h(D5-D0)

18h(D5-D0)

0Fh(D5-D0)

12h(D5-D0)

10h(D5-D0)

09h(D5-D0)

0Fh(D5-D0)

2Ah(D3-D0)

08h

2Ah(D4)

1Ah(D3-D0)

1Ch

1Fh

27h(D7-D5)

87F2h(D5-D0)

Oh(D15-D0)

29h(D5)

28h(D2-D1)

05h(D5-D0)

04h(D5-D4)

04h(D3-D0)

29h(D7)

19h(D7-D6)

20h(D1)

21h(D0)

1Bh

19h(D5-D0)

Initial Value

Remark

RF AGC

Sub contrast(high light adjustment)

Sub brightness(low light adjustment)

Black level offset R(low light R adjustment)

Black level offset B(low light B adjustment)

White point R(high light R adjustment)

White point G(high light 25 fixed)

White point B(high light B adjustment)

Vertical slope

Vertical shift

Vertical amplitude

Horizontal shift

S-correction

Cathode drive level

Sub tint(NTSC only)

Black current stabilization

PAL Y-delay adjustment

NTSC Y-delay adjustment

PAL sub color gain adjustment

NTSC sub color gain adjustment

Initial vol adjustment

PLL demodulator frequency adjust( 0 : set )

TTX horizontal shift adjustment(Micom Memory Part)

Melody initial vol adjustment(MSP34XX)

Narrow-band sound PLL window selection

IF AGC speed

Off-set IF demodulator

Soft clipping level

Peak white limiting

FM demodulator gain

Peaking center frequency

Automatic color limiting

Forced color limiting

Screen brightness(different from INCH)

Sub Sharpness gain adjustment

Alignment and Adjustments

4-4 Samsung Electronics

OSD

PSNS

DPSR

DNSR

DSBT

DCDL

DBLR

DBLB

Range

0 ~ 1

0 ~ 23

0 ~ 15

0 ~ 63

21h(D2)

1Ch

1Bh

2Ah(D3-D5)

14h(D5-D0)

15h(D15-D0)

Initial Value

Remark

Ident sensitivity PAL/NTSC decoder

DVD PAL sub color gain adjustment

DVD NTSC sub color gain adjustment

DVD Sub brightness(low light adjustment)

DVD Cathode drive level

DVD Black level offset R(low light R adjustment)

DVD Black level offset B(low light B adjustment)

Alignment and Adjustments

Samsung Electronics 4-5

ADJUST

OPTION 52 2A 48

G2-ADJUST

RESET

SPM-834EAN 2002/XX/XX

Item

LNA

SYSTEM

AUDIO

JACK

ZOOM

AUTO POWER

SBL

2nd SIF

HOTEL MODE

BL STRETCH

HIGH DEVIA

HELP MENU

LANGUAGE

V-GUARD

Initial value

OFF

MONO

RCA + DVD

NOR/ZOOM/16:9

OFF

EAST ASIA

OFF

Remark

CIS : ON

CS ↔CB ↔CD

MONO ↔MONO/BILI↔L-STEREO

↔L-STEREO/BILI↔STEREO↔NICAM

RCA ↔SCART ↔RCA+DVD

NOR/ZOOM/16:9 ↔NOR/ZOOM

MUST ON

OFF(MUST OFF)

ON ↔OFF

ON ↔OFF(OPTION)

ON ↔OFF(EUROPE OFF)

OFF(MUST OFF)

ON ↔OFF(EUROPE OFF)

EAST ASIA ↔CHINA

OFF(MUST OFF)

4-5-2(B) OPTION

ADJUST

OPTION 52 2A 48

G2-ADJUST

RESET

SPM-836EAN 2002/XX/XX

4-5-2(C) G2-ADJUST

☞Entering G2-Adjust Mode Screen Adjust : Displyed As “NG”.

→Turn SCREEN VR OF FBT, Adjust Value Become To Be “OK”.

Screen Adjust : N.G

Screen Adjust : O.K

Screen Adjust : N.G

Alignment and Adjustments

4-6 Samsung Electronics

4-6 MICOM

4-6-1 UOC IC 1-CHIP Part Pin Port Function

Pin No

FUNCTION

Analog GND of TV

Secam PLL decoupling

2nd supply voltage(8V)

Supply voltage of digital circuit

Phase-2 filter

Phase-1 filter

GND 3 for TV

Bandgap decoupling

Automatic Volume Leveling(90’ ver)

Vertical drive B out

Vertical drive A out

IF input 1

IF input 2

Reference current input

Vertical sawtooth cap

Tuner AGC out

Audio deemphasis

Decoupling sound demodulator

GND 2 for TV

Narrow band PLL filter

Sound IF input/ AM output

FUNCTION

B out

G out

R out

Black current in/V-guard in

Beam current limiter in

B-in/Pb-in

G-in/Y-in

R-in/Pr-in

F/B in

Audio output(volume controlled)

GND

EXT CVBS in

GND for TV

Internal CVBS input

Main supply voltage TV(8V)

IF Video out

IF-PLL loop filter

EHT/over voltage protection in

External audio out/AM output

Flyback in/sandcastle out

Horizontal out

MICOM

PART

1-CHIP

UOC-IC

PART

Alignment and Adjustments

Samsung Electronics 4-7

4-6-2 UOC MICOM Part Pin Port Function

Pin No

INITIAL

LOW

SERIAL H

LOW

LOW & HIGH

HIGH

GND

HIGH

LOW

HIGH

ASSIGNMENT

ACTIVE HIGH

E2PROM/UOC/TUNER/MSP34XX SCL LINE

ACTIVE HIGH

STD-BY:LOW, NORMAL OPERATION:HIGH, BUS STOP(STOP:LOW)

MENU, VOL-DOWN, VOL-UP CONTROL

CH-DOWN, CH-UP, TV/VIDEO CONTROL

TV MODE : OV AV MODE:HIGH(3.3V)

4.5Mhz : LOW 5.5-6.5Mhz : HIGH

Digital GND for MICOM

TV MODE : OV AV MODE : HIGH(3.3V)

PAL : HIGH NTSC : LOW L : LOW L’ ; HIGH

Analog supply of TTX and Digital supply of TV(3.3V)

OTP Programming voltage

Digital supply to core(3.3V)

Oscillator GND supply

XTAL oscillator input

XTAL oscillator output

POWER ON : 25ms HIGN -> LOW

Digital supply to periphery(3.3V)

PRE AMP Signal input

Select bilingual

TV out for inrush voltage : AUOT TV ON

FUNCTION

POWER

SCL

SDA

MUTE

STD-BY & BUS-STOP

KEY-1

KEY-2

SC1-ID & CHINA SOUND

& SAW S/W

GND

TV/VIDEO S/W

NT/PAL & AW-S/W

& L/L’-S/W

VDDA 3.3V

VPE

VDDC 3.3

OSCGND

XTAL IN

XTAL OUT

RESET

VDDP

SIGNAL IN

BILINGUAL

HOLD

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