Samsung CS21A9W2QS/MUR Service Manual

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

1.

2.

3.

4.

5.

6.

7.

8.

9.

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

IN

DVD

IN

U. O. C

PLUS

EEPROM

VERT ICAL

AMP

H- OUT T R

AUDI O

AMP

10W X2CH

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

UOC

RGB

V-Dri ve

H-Dri ve

Pr e-

AMP

VIF SAW

+S/W

8V
5V

3. 3V

TUNER

JACK

RCA

SIFSAW

+S/W

SIF

IC

<OPTION>

MSP

<OPTION>

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

RG
GG
BG

VSL

VS
VA
HS
SC

CDL

33
13

9
31
27
32
25
31
19
38
40
30
24

9

STT

AKB

PDL

NDL

PSR

NSR

VOL
LCO
TXP

MVOL

FMWS

AGCS

OMD

SCL

7

0
15
10
15
10
10

0

9
10

0

1
26

1

PWL
AGN

PEK
ACL
FCO

SCBT

SSP
PSNS
DPSR
DNSR
DSBT
DCDL

DBLR
DBLB

12

1
2
0

0
45
15

1
15
10

7

9
31
27

4-5-2(A) ADJUST

Alignment and Adjustments

Samsung Electronics 4-3

OSD

AGC

SCT
SBT
BLR
BLB

RG
GG
BG

VSL

VS
VA
HS

SC
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 ~ 23
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 15

0 ~ 7

0 ~ 1
0 ~ 15
0 ~ 15
0 ~ 23
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 ~ 1
0 ~ 63
0 ~ 23

Register

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)
1Ah(D3-D0)

1Ch
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

33
13

9
31
27
32
25
31
19
38
40
30
24

9

7

0
15
10
15
10
10

0

9
10

0

1
26

1
12

1

2

0

0
45
20

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 ~ 23

0 ~ 23

0 ~ 15
0 ~ 63
0 ~ 63

Register

21h(D2)

1Ch
1Ch
1Bh

2Ah(D3-D5)

14h(D5-D0)

15h(D15-D0)

Initial Value

1
15
10

7

9
31
27

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

No

1
2

3

4
5
6
7
8

9
10
11
12
13
14

Initial value

OFF

CS

MONO

RCA + DVD

NOR/ZOOM/16:9

ON

OFF

ON

OFF

ON

OFF

ON

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

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

Pin No

53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33

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

1

.

.

.

11

64

.

.

.

54

12

.

.

.

.

.

.

.

.

32

53

.

.

.

.

.

.

.

.

33

Alignment and Adjustments

Samsung Electronics 4-7

4-6-2 UOC MICOM Part Pin Port Function

Pin No

1
2
3
4
5
6
7

8

9

10

11

54
55
56
57
58
59
60
61
62
63
64

INITIAL

LOW
SERIAL H
SERIAL H

LOW

LOW & HIGH

HIGH

HIGH

HIGH

HIGH

GND

HIGH

LOW

HIGH

HIGH

ASSIGNMENT
ACTIVE HIGH
E

2

PROM/UOC/TUNER/MSP34XX SCL LINE
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

Alignment and Adjustments

4-8 Samsung Electronics

Request

●

●

●

●

●

Requisite

●

●

●

●

●

●

●

●

●

●

●

●

Option

●

●

●

●

●

●

●

●

●

Remarks

Scart Option

X

X
0

0

0

0

0

PAPILLON KS1C

0
X
X

100

1H

X

0

0

21F

1
X

1

1

1
X

1

Option(1)

1

0

X

0

0

0

0

0

0

0

0

Option

Before KS2A

0
X
X

100

0
X
0
0

21F/25F/25”~29”

1
X
1
1
2
X
1

Option(2)

1

Cope With or
Without

Double Screen
Turbo Sound

Auto Volume
Leveler

Sound Mode

Sound Tone
Control

Melody Sound
On/Off

0
0
0

Option

P

i
c
t
u
r
e

J
a
c
k

F
u
n
c
t

i
o
n

Broadcasting

System
Scan System

Program ch’
Comb Filter
VM Circuit
Auto Kinetic Bias
Noise Reduction
CRT

The-Front
The-Side

Back

PIP

Sleep timer
Plug & Play
TTXT

PAL MULTI
EURO MULTI
Progressive
100/181/200

AV-In
S-VHS
H-Phone
RF Jack
AV-In
S-VHS
DVD(Y,Pb,Pr)
Scart Jack
M-out

On/Off timer, Clock

Section

PAL

SPECIFICATIONS(MRT)

Alignment and Adjustments

Samsung Electronics 4-9

SPECIFICATIONS(MRT)

RequestRequisite

●

●

●

●

●

●

●

Option

●

●

●

Remarks

PAPILLON KS1C

Multi

0

X

0
0

X

0
0
2

Option

10W x 2CH

Before KS2A

Multi

0
X
0
0
X
0
0
2

Option

10W x 2CH

F
u
n
c
t

i
o
n

S
o
u
n
d

OSD Language
Auto Power Off
Previous Channel
Blue Screen
Demo Mode
Game
Sound
A2/Nicam
Main-R/L
Out(TTL)
Out(TTL)

Surround
Speaker Quantity
Speaker Type
RMS/CH
RMS/CH

Section

PAL