Samsung CS25M20SSNSKLG User manual

COLOR TELEVISION RECEIVER
Chassis : S61A(P)Negitiator_Rev.2
Model : CS25M20SSNSKLG
CS29M20SPNS/KLG
CS29M20SSNSKLG
COLOR TELEVISION RECEIVER CONTENTS
1.
2.
3.
4.
5.
6.
Specifications
Alignment and Adjustments
Exploded Views and Parts List
Electrical Parts List
PCB Diagram
Schematic Diagrams
SERVICE Manual

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.
©Samsung Electronics Co., Ltd. Apr. 2005
Printed in Korea
AA82-02379A
ELECTRONICS

Specifications
Samsung Electronics 1-1
1. Specifications
Country INDEX
F
I
X
E
D
OriginMark Madeinlocal countryofMade in KOREA(Samsung)
Color
Demodulation
Demodulation
PAL/SECAM/NTSC 4 .43 /NTSC3. 58
Sound
Receiving was Quasi-split
Sound VIRTUAL DOLBY(NICAM/STEREO)
Antenna 75ohmDIN - Jack(V/U)
Channel search F/S REMOCON
Channel numbers Air+CATV (41CH)
InputvoltageAC 160V~300V
Power Input
frequency 50Hz
PowerSTR 5Q1565RF
Power insulation SMPS/C OLD
U
n
f
i
x
e
d
Receiving(P/G)CHVHF: 2~12, UHF:21~69 , CATV: S1~S41CH
BRAND/BUYERSAMSUNG/BWT (Depend on the Buyer)
Safety GOST
Powercord /
Polarity CP2/NO
Character
*Simple 100HzSCAN
*2SCAR TS / HALF TONE O S D
*2T-PIP

MEMO
1-2 Samsung Electronics

Alignment andAdjustments
Samsung Electronics 2-1
2. Alignment and Adjustments
2-1 Adjustments
2-1-1 General Alignment Instructions
Usually, a color TV needs only slight touch-up adjustment upon installation. Check the basic
characteristics such as vertical size, horizontal size, and focus. Observe the picture and check for
good black and white details. There must be no objectionable color shading: If color shading is
present, demagnetize the receiver. If color shading persists, re-do purity and convergence adjustments.
Note :
1. This ‘4. Alignment and Adjustments’ applies to S61A chassis applications.
2. AC Power Supply: 160~300V or 100~240V, 50Hz
3. This service manual has been written on the basis of domestic remote-control model adopting S61A
chassis. Depending on sales location and product specifications, some of specifications herein may
be changed.
2-1-2 Focus Adjustment
S61A contains a dynamic focus circuit. When CRT PCB, FBT or CRT is replaced, be sure to adjust in the
following sequence:
Focus Adjustment
1. Input a crosshatch pattern.
2. Select “Standard” from the menu,
3. Turn the Static Focus VR clockwise to set it to its maximum.
4. Turn the Static Focus VR counterclockwise slowly for the clearest
center vertical line.
5. Turn the Dynamic Focus VR clockwise slowly for the clearest third line.
6. Check for the FOCUS of entire screen. If necessary,
re-do adjustments 3~5.
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Alignment andAdjustments
2-2 Samsung Electronics
2-1-3 Screen Voltage Adjustment
1. Input a Toshiba pattern.
2. Use an oscilloscope to identify RK, BK, GK. And then adjust FBT Screen VR so that the voltage of
pedestal level doesn’t exceed 160V.
If a Toshiba pattern is not available, cancel the blue screen and input “No Signal” to AV IN so the voltage
of pedestal level doesn’t exceed 175V.
If an oscilloscope is not available, use a DC multi-meter in No Signal (black screen) to adjust RK, BK, GK
so that the highest voltage becomes 160Vp-p.
2-1-4 White Balance Adjustment
1. Warm up the TV set for at least 30 minutes.
2. Enter the Service Mode by pressing the remote control keys in the following sequence:
Power Off ½ Display ½ Menu ½ Mute ½ Power On
3. Initialize all set data.
4. Input a Toshiba pattern.
5. Using a probe(CA100), do the White Balance adjustments.
(1) Adjust Low-Light.
- Adjust Sub Brightness to set Y.
- Adjust B Cutoff to set y.
- Adjust R Cutoff to set x.
(2) Adjust High-Light.
- Adjust Sub Contrast to set Y.
- Adjust B Drive to set y.
- Adjust R Drive to set x.
(3) Check the value of Low-Light. If necessary, readjust Low-Light.
(4) Check the value of High-Light. If necessary, readjust High-Light.15

Alignment andAdjustments
Samsung Electronics 2-3
2-1-5 When adjusting Screen Voltage and White Balance
1. Screen Voltage and White Balance are related each other. Make sure both adjustments are correct.
2. Adjust Screen Voltage before White Balance Adjustments. Make sure Screen Voltage is correct.
3. If White Balance has been readjusted, re-check Screen Voltage.
4. After adjustments are complete, check the following.
- If spots appear on the screen after pressing the Power On/Off key, readjust Screen Voltage.
- If flyback lines appear on the screen, readjust Screen Voltage.

Alignment andAdjustments
2-4 Samsung Electronics
2-2 MICOM PORT

Alignment andAdjustments
Samsung Electronics 2-5

Alignment andAdjustments
2-6 Samsung Electronics

Alignment andAdjustments
Samsung Electronics 2-7
2-3 Factory Adjustment
2-3-1 Factory Adjustment values
SERVICE
Deflection
VideoAdjust1
VideoAdjust2
VideoAdjust3
VideoAdjust4
YC Delay
EEPROM
Option
CheckSum
Reset
SERVICE
Deflection
480/576P Deflect offset
1080i Deflection offset
VideoAdjust1
VideoAdjust2
VideoAdjust3
VideoAdjust4
DTV VideoAdjust
YC Delay
EEPROM
Option
CheckSum
Reset
European Model The Others Model

Alignment andAdjustments 2-8 Samsung Electronics
2-3-2 Factory Data
DEFLECTION : PAL
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
V-AMP 26 26 26 26 26 26 26 26 26 26 26 26 26 Vertical AMP adj( Gain Control)
V-SHIFT 30 30 30 30 30 30 30 30 30 30 30 30 30 Vertical Position adj (DC bias adj)
H-EW 33 33 33 33 33 33 33 33 33 33 33 33 33 Horizontal AMP adj(Gain Control)
H-SHIFT 35 35 35 35 35 35 35 35 35 35 35 35 35 Horizontal Position adj (DC bias adj)
V-Linearity 6 6 6666 5 5 6 6 6 6 6Vertical Linearity adj(TOP/Bottom adj)
UP-Linearity 8 888 8 8 8 8 8 8 8 88Vertical Linearity adj(TOP adj)
LOW-Linearity 4 4 4444 4 4 4 4 4 4 4Vertical Linearity adj(Bottom adj)
V-SC 5 55 5 5 5 5 5 5 5 5 55Vertical S correction adj
H-Parablar 48 48 48 48 48 48 48 48 48 48 48 48 48 Horizontal pin distortion adj
UP-Coner 35 35 35 35 35 35 35 35 35 35 35 35 35 Horizontal pin distortion up adj
LOW-Coner 36 36 36 36 36 36 36 36 36 36 36 36 36 Horizontal pin distortion low adj
H-Trapezium 12 12 12 12 12 12 12 12 12 12 12 12 12 Horizontal Trapezium distortion adj
BOW 31 31 31 31 31 31 31 31 31 31 31 31 31 Vertical line slope adj(parabola)
ANGLE 25 25 25 25 25 25 25 25 25 25 25 25 25 Vertical Linearity adj(sawtooth)
V-Position 40 40 40 40 40 40 40 40 40 40 40 40 40 V-POSITION ADJ as to CRT INCH
CXA 2151 Sub01 68 68 68 68 68 68 68 68 68 68 68 68 68
CXA 2151 Sub02 1 1 1 1 1 1 11 1 1 1 1 1

Alignment andAdjustments
Samsung Electronics 2-9
DEFLECTION : NTSC
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
V-AMP 0 0 0 0 0 0 0 0 0 0 0 0 0 Vertical AMP adj( Gain Control)
V-SHIFT 2 2 2 2 2 2 2 2 2 2 2 2 2 Vertical Position adj (DC bias adj)
H-EW 1 1 1 1 1 1 1 1 1 1 1 1 1 Horizontal AMP adj(Gain Control)
H-SHIFT 9 9 9 9 9 9 9 9 9 9 9 9 9 Horizontal Position adj (DC bias adj)
V-Linearity 2 2 2 2 2 2 2 2 2 2 2 2 2 Vertical Linearity adj(TOP/Bottom adj)
UP-Linearity 11 1 11 1 1 1 1 11 1 1 Vertical Linearity adj(TOP adj)
LOW-Linearity -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Vertical Linearity adj(Bottom adj)
V-SC 0 0 0 0 0 0 0 0 0 0 0 0 0 Vertical S correction adj
H-Parablar 0 0 0 0 0 0 0 0 0 0 0 0 0 Horizontal pin distortion adj
UP-Coner 2 2 2 2 2 2 2 2 2 2 2 2 2 Horizontal pin distortion up adj
LOW-Coner 3 3 3 3 3 3 3 3 3 3 3 3 3 Horizontal pin distortion low adj
H-Trapezium -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 Horizontal Trapezium distortion adj
BOW 1 1 1 1 1 1 1 1 1 1 1 1 1 Vertical line slope adj(parabola)
ANGLE -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 Vertical Linearity adj(sawtooth)
V-Position 0 0 0 0 0 0 0 0 0 0 0 0 0 V-POSITION ADJ as to CRT INCH
CXA 2151 Sub01 68 68 68 68 68 68 68 68 68 68 68 68 68
CXA 2151 Sub02 1 1 1 1 11 1 1 1 1 1 1 1

Alignment andAdjustments 2-10 Samsung Electronics
Video Adjust 1
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
EE_R_CUTOFF, 35 35 35 35 35 35 35 35 35 35 35 35 35 R-cutoff control adj
EE_G_CUTOFF, 25 25 25 25 25 25 35 35 25 25 25 25 25 G-cutoff control adj
EE_B_CUTOFF, 40 40 40 40 40 40 40 40 40 40 40 40 40 B-cutoff control adj
Color On / Off 1 1 1 1 1 1 1 1 1 1 1 1 1 Initial Value : "0"--> 1
CR Offset 30 30 30 30 30 30 30 30 30 30 30 30 30 DC-offset canceling
CB Offest 30 30 30 30 30 30 30 30 30 30 30 30 30 DC-offset canceling
R Drive 32 32 32 32 32 32 32 32 32 32 32 32 32 R-Drive control adj
G Drive 25 25 25 25 25 25 28 28 25 25 25 25 25 G-Drive control adj
B Drive 41 41 41 41 41 41 41 41 41 41 41 41 41 B-Drive control adj
Sub Bright 48 48 48 48 48 48 48 48 48 48 48 48 48 Sub-Bright control
Sub Contrast 9 9 9 9 9 9 9 9 9 9 9 9 9 Sub-Contrast control
Sub Color 10 10 10 10 10 10 10 10 10 10 10 10 10 color gain control(PAL SETTING AGAIN)
Secam sub color 5 5 5 5 5 5 5 5 5 5 5 5 5 HUE control
Sub Tint 28 28 28 28 28 28 28 28 28 28 28 28 28 Chrominance Transient Improvement
CTI Level 2 2 2 2 2 2 2 2 2 2 2 2 2 color detection axis setting(NTSC/USA)
Color AXIS 1 1 1 1 1 1 1 1 1 1 1 1 1 Luminance Transient Improvement
LTI Level 1 1 1 1 1 1 1 1 1 1 1 1 1 vertical osd position

Alignment andAdjustments
Samsung Electronics 2-11
Video Adjust 2
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
ABL Mode 3 3 3 3 3 3 3 3 3 3 3 3 3 picture/bright ABL gain control(PAL SETTING AGAIN)
Gamma 2 2 2 2 2 2 3 3 2 2 2 2 2 RGB output correction control(PAL SETTING AGAIN)
DPIC Level 3 3 3 3 3 3 3 3 3 3 3 3 3 Dynamic picture black expansion control(PAL SETTING AGAIN)
DC Trans 2 2 2 2 2 2 2 2 2 2 2 2 2 Y-System DC transmission ratio(PAL SETTING AGAIN)
ABL-TH 14 14 14 14 14 14 14 14 14 14 14 14 14 Threshold voltage adj ABL-IN(PAL SETTING AGAIN)
VM-Level 2 2 2 2 2 2 2 2 2 2 2 2 2 VM-OUT Level control
VM-Coring 2 2 2 2 2 2 2 2 2 2 2 2 2 VM-OUT coring control
VM-f0 2 2 2 2 2 2 2 2 2 2 2 2 2 VM-f0 control
VM-Limit 2 2 2 2 2 2 2 2 2 2 2 2 2 VM-Limit level control
VM-Delay 3 3 3 3 3 3 3 3 3 3 3 3 3 VM-OUT phase control(reference to R-OUT)
SHP CD 1 1 1 1 1 1 1 1 1 1 1 1 1 Sharpness gain control(color satuation)
SHP f0 0 0 0 0 0 0 0 0 0 0 0 0 0 Sharpness f0 control (3Mhz)
SHP f1& p/o 8 8 8 8 8 8 8 8 8 8 8 8 8 Sharpness gain control(PAL SETTING AGAIN)
AKB Time 15 15 15 15 15 15 15 15 15 15 15 15 15 AKB Bch reference pulse time control(PAL SETTING AGAIN)
Coring 0 0 0 0 0 0 0 0 0 0 0 0 0
Bandpass 7 7 7 7 7 7 7 7 7 7 7 7 7 VSP9402 Band/High pass filter(Peaking)
Highpass 8 8 8 8 8 8 10 10 8 8 8 8 8 VSP9402 High pass filter

Alignment andAdjustments 2-12 Samsung Electronics
Video Adjust 3
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
H_EHT comp 4 4 4 4 4 4 3 3 4 4 4 4 4 H-EHT compensation setting(PAL SETTING AGAIN)
V_EHT comp 7 7 7 7 7 7 7 7 7 7 7 7 7 V-EHT compensation setting(PAL SETTING AGAIN)
PIN EHT comp 1 1 1 1 1 1 1 1 1 1 1 1 1 PIN-EHT compensation setting
AFC EHT comp 0 0 0 0 0 0 0 0 0 0 0 0 0 (PAL SETTING AGAIN)
Sync Phase 0 0 0 0 0 0 0 0 0 0 0 0 0 AFC-EHT compensation
NR Value 6 6 6 6 6 6 6 6 6 6 6 6 6 WHEN USED 74HC123
PIP Contrast 13 13 13 13 13 13 13 13 13 13 13 13 13 Not used
PIP Bright 0 0 0 0 0 0 0 0 0 0 0 0 0
PIP Tint 63 63 63 63 63 63 63 63 63 63 63 63 63
PIP Color 6 6 6 6 6 6 6 6 6 6 6 6 6
PIP Pal V Pos 28 28 28 28 28 28 28 28 28 28 28 28 28
PIP NTSC V Pos 25 25 25 25 25 25 25 25 25 25 25 25 25
PIP H Pos 34 34 34 34 34 34 34 34 34 34 34 34 34
PIP R Cut off 1 1 1 1 1 1 1 1 1 1 1 1 1
PIP G Cut off 1 1 1 1 1 1 1 1 1 1 1 1 1
PIP B Cut off 1 1 1 1 1 1 1 1 1 1 1 1 1
PIP R Drive 56 56 56 56 56 56 56 56 56 56 56 56 56

Alignment andAdjustments
Samsung Electronics 2-13
YC Delay
Video Adjust 4
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
3Pip Pal V position 11 11 11 11 11 11 11 11 11 11 11 11 11 PIP Option
3Pip Pal H Position 13 13 13 13 13 13 13 13 13 13 13 13 13 PIP Option
3Pip Ntsc V Position 12 12 12 12 12 12 12 12 12 12 12 12 12 PIP Option
3Pip Ntsc H Position 19 19 19 19 19 19 19 19 19 19 19 19 19 PIP Option
Sync Phase (480p) 1 1 1 1 1 1 1 1 1 1 1 1 1 DTV Option
Sync Phase (576p) 1 1 1 1 1 1 1 1 1 1 1 1 1 DTV Option
Sync Phase (1080i) 0 0 0 0 0 0 0 0 0 0 0 0 0 DTV Option
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
P.YC (AV) Delay -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9
S.YC (AV) Delay -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8
N.YC (AV) Delay -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8
P.BG.YC Delay -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8
P.DK.YC Delay -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
P.I.YC Delay -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10
P.M.YC DELAY -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9
P.L.YC Delay -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8
S.BG.YC Delay -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6 -6
S.DK.YC Delay -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8 -8

Alignment andAdjustments 2-14 Samsung Electronics
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
V Amp -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
V_SHIFT -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
H EW 22 2 2 2 2 2 2 2 2 2 2 2
H Shift -14 -14 -14 -14 -14 -14 -14 -14 -14 -14 -14 -14 -14
V Linearity -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
Upper-Linearity 0 0 0 0 000 0 00 0 0 0
Lower-Linearity 0 0 0 0 0 0 0 0 0 0 0 0 0
V SC 0 0 0 0 000 0 00 0 0 0
H Parablar 0 0 0 0 00 0 00 0 0 0 0
Upper Corner 4 4 4 4 4 4 4 444 4 4 4
Lower Corner -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3
H Trapezium 11 11 11 11 11 11 11 11 11 11 11 11 11
Bow 0 0 0 0 00 0 00 0 0 0 0
Angle 0 0 0 0 0 00 0 00 0 0 0
V Position 0 0 0 0 000 0 0 0 0 0 0
CXA 2151 Sub01 232 232 232 232 232 232 232 232 232 232 232 232 232
CXA 2151 Sub02 97 97 97 97 97 97 97 97 97 97 97 97 97
480p Deflection OFFSET

Alignment andAdjustments
Samsung Electronics 2-15
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
V Amp 11 1 1 1 1 1 1 1 1 1 11
V_SHIFT 1 1 1 1 11 1 1 1 1 1 1 1
H EW 0 0 00 0 0 0 0 0 0 0 00
H Shift -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3
V Linearity 00 0 0 0 0 0 0 0 0 0 0 0
Upper-Linearity 0 0 0 0 00 0 0 0 0 0 0 0
Lower-Linearity 00 0 0 0 0 0 0 0 0 0 00
V SC 0 0 0 0 00 0 0 0 0 0 0 0
H Parablar 00 0 0 0 0 0 0 0 0 0 00
Upper Corner 00 0 0 0 0 0 0 0 0 0 0 0
Lower Corner 11 1 1 1 1 1 1 1 1 1 11
H Trapezium 666 6 6 6 6 6 6 6 6 6 6
Bow 00 0 0 0 0 0 0 0 0 0 00
Angle 2 2 2 2 2 2 2 2 2 2 2 2 2
V Position 00 0 0 0 0 0 0 0 0 0 00
CXA 2151 Sub01 232 232 232 232 232 232 232 232 232 232 232 232 232
CXA 2151 Sub02 97 97 97 97 97 97 97 97 97 97 97 97 97
576p Deflection OFFSET

Alignment andAdjustments 2-16 Samsung Electronics
ITEMS CIS Europe China Asia M.Asia REMARK
29” 32” 34" 28" 29" 32” 29" 34" 29” 32” 34" 29” 32”
V Amp 33 3 3 3 3 3 3 3 3 3 3 3
V_SHIFT -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3 -3
H EW -11 -11 -11 -11 -11 -11 -11 -11 -11 -11 -11 -11 -11
H Shift 8 8 88 8 8 8 8 8 8 8 8 8
V Linearity -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2
Upper-Linearity 0 0 00 0 0 0 0 0 0 0 0 0
Lower-Linearity 0 0 0 0 0 00 0 0 0 0 0 0
V SC -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
H Parablar -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9 -9
Upper Corner 1 1 11 1 1 1 1 1 1 1 1 1
Lower Corner -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5
H Trapezium 10 10 10 10 10 10 10 10 10 10 10 10 10
Bow 2 2 2 2 2 22 2 2 2 2 2 2
Angle 1 1 1 1 1 1 1 1 1 1 1 1 1
V Position 000 0 0 00 0 00 0 0 0
CXA 2151 Sub01 196 196 196 196 196 196 196 196 196 196 196 196 196
CXA 2151 Sub02 97 97 97 97 97 97 97 97 97 97 97 97 97
1080I Deflection OFFSET