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.
Page 2
Alignment and Adjustments
4-2Samsung Electronics
4-5 SCREEN Adjustment
1. Input Toshiba Pattern
2. Enter “Service Mode”.(Refer to “4-8-1 Service Mode”)
3. Select “G2-Adjust”.
4. Set the values as below.
4-4 FOCUS Adjustment
1. Input 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.
5. Turn the SCREEN VR until “MRCR G B” and “MRWDG” are green and those value are about 100.
(The incorrect SCREEN Voltage may result that “MRCR G B” and “MRWDG” should be red)
INCH / CRT
14” / SDI
15PF / SDI
21” 1.7R / SDI
20V 10.0R/SDI
21PF / TSB
21PF / LG
21PF / SDI
25PF / SDI
27V 1.3R / SDI
27V 1.0R/SDI
25V 1.0R/SDI
23V 1.3R/SDI
No
1
2
3
4
5
6
7
8
9
10
11
12
IBRM
205
220
220
205
220
230
220
210
210
210
210
205
WDRV
35
35
35
35
35
35
35
35
35
35
35
35
CDL
100
180
180
115
180
230
210
160
170
150
150
120
COLR G B
(Smallest Value)
100
100
100
120
65
65
65
120
150
180
180
140
Table 1. Screen Adjustment Table
REGION
Normal
Page 3
Alignment and Adjustments
Samsung Electronics4-3
4-6 E2PROM (IC902) Replacement
1. When IC902 is replaced, all adjustment data revert to the initial values.
So, all adjustment values when servicing should be readjusted.
2. After IC902 is replaced, connect the AC power supply cord.
3. Turn the power switch ON.
4. In stand-by, warm up the TV for at least 10 seconds.
5. Power on the TV.
4-7 White Balance Adjustment
■ Equipment : Color-Analyzer (CA-100)
■ Input Signal : Pattern signal (Toshiba pattern)
1. Select STANDARD from the menu.
2. Input an 100% White pattern.
3. Enter the “Service Mode”. (Refer to “4-8 Service Mode”)
4. Warm up the TV set at least for 30 minutes.
5. Input a Toshiba pattern signal.
6. Enter the “Video Adjust1”.
- Adjust “Sub Contrast” so that Y (luminance) becomes 65 ft ± 3.
- Use “Red Drive” and “ Blue Drive” to adjust High-Light (x : 265, y : 265)
- Adjust “Sub Bright” so that Y (luminance) becomes 1.2ft ± 0.3.
- Use “Red Cutoff” and “Blue Cutoff” to adjust Low-Light (x : 265, y : 265).
7. Adjust CA-100 so that the final adjustment value can be fixed.
8. Use the Channel Up/Down (▲/▼) buttons to move the cursor on the adjustment modes.
9. Use the Volume +/- buttons to change the adjustment value.
Page 4
Alignment and Adjustments
4-4Samsung Electronics
4-8 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
2. After the Service Mode is entered, the initial screen is as shown in the figure below.
3. Use the Channel Up/Down buttons to move the cursor in the adjustment parameters.
Note :
- When CRT, CRT PCB, FBT, E
2
PROM (sometimes MICOM) is replaced, the adjustment values
should be controlled.
- After the Service adjustment is completed, Do not select “Reset” in the service mode menu.
(After above procedure is done, power is on initially and the “Plug and Play” will be operated.)
4-8-1 Service Mode
*
These hexa digits are check sum value which
depends on the MICOM version.
If check sum value is changed, the value of
E
2
PROM Data newly initialed.
PICTURE OFFPICTURE ON
PICTURE ON
MUTE1,8,2
DISPLAY
()
FACTORY
xx xx xx
*
Page 5
Alignment and Adjustments
Samsung Electronics4-5
4-8-2 Deflection (Memory Data)
- SIM408A USA, LATIN FACTORY (VDP IC VDP3108B)
15" FLAT
H Bow
H SYMMETRY
H CORNER
PIP TINT
PIP H.POS
SIM-408A USA,LATIN FACTORY (VDP IC VDP3108B)
Model
4-8-2(A) GEOMETRIC ADJUSTMENT VALUE
INCH
Model
DEFLECTIONINIT
H Bow
H Angle0FIX000000
H Dscc0FIX333333
V SHIFT-40Control-27-24-18-18-40-35
V AMP5Control-50-411818520
V SLOPE-2Control-7-4-4-4-2-4
V SC-7FIX0-13-13-13-13-13
H EW64Control10-3764(FIX)64(FIX)64(FIX)64(FIX)
H TRAPEZIUM-20Control-82-48-20(FIX)-20(FIX)-20(FIX)-20(FIX)
H PARABOLA-13Control-89-44-13(FIX)-13(FIX)-13(FIX)-13(FIX)
H SYMMETRY
H CORNER
H SHIFT4Control081313413
PIP CONTRASTFIX000000
PIP TINT
PIP PAL V.POSFIX121212121212
PIP NTSC V.POSFIX121212121212
PIP H.POS
4-8-2(B) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT)
1V Shift
V Slope
2
3H EW
6V Amp
V SC
7
8
H Trapizium
4H Parabola
5H Corner
9
10
H Shift
H Symmetry
Page 7
Alignment and Adjustments
Samsung Electronics4-7
4-8-2(C) VIDEO ADJUST 1
27V 1.3R23V 1.3R25V 1R27V 1R20V 1R15" FLAT
TXK2767CL25D4W
TXK2550TXK2554TXK2566TXK2567
CL663BW
TXK2750TXK2754
TXK2060TXK2066TXK2067
CT-15A8
DEFLECTIONINITH Bow
0FIX000000
H Angle0FIX000000H Dscc0FIX333333V SHIFT-40Control-27-24-18-18-40-35V AMP5Control-50-411818520V SLOPE-2Control-7-4-4-4-2-4V SC-7FIX0-13-13-13-13-13H EW64Control10-3764(FIX)64(FIX)64(FIX)64(FIX)H TRAPEZIUM-20Control-82-48-20(FIX)-20(FIX)-20(FIX)-20(FIX)H PARABOLA-13Control-89-44-13(FIX)-13(FIX)-13(FIX)-13(FIX)H SYMMETRY13FIX131313131313H CORNER15Control06969(FIX)69(FIX)69(FIX)69(FIX)H SHIFT4Control081313413PIP CONTRASTFIX000000PIP TINTFIX000000PIP PAL V.POSFIX121212121212PIP NTSC V.POSFIX121212121212PIP H.POSFIX121212121212
25V 1R
20V 1R
INIT
SUB BRIGHT
SUB COLOR
SUB TINT
BCL THRESHOLD
SIM-408A USA,LATIN FACTORY (VDP IC VDP3108B)
Model
INCH
Model
Note 1. Beam Control Limit Characteristic
WDRGB
BCL THESHOLD
1.8mA
1.6mA
MIN
BCL GAIN
MAX
INCH
Model
VIDEO ADJUST1
RED CUT OFF127Control127127127127127127
GREEN CUT OFF127FIX127127127127127127
INIT
BLUE CUT OFF127Control127127127127127127
RED DRIVE127Control150127127127127127
GREEN DRIVE127FIX127127127127127127
BLUE DRIVE127Control170127127127127127
SUB BRIGHT
SUB CONTRAST52Control525252525252
SUB COLOR
SUB TINT
BCL THRESHOLD
BCLGAIN8FIX888888
BCL TIME13FIX101010101013
DVD SUB TINT90FIX100100100100100120
N. YC DELAY0FIX333334
V SHIFT-40Control-27-24-18-18-40-35V AMP5Control-50-411818520V SLOPE-2Control-7-4-4-4-2-4V SC-7FIX0-13-13-13-13-13H EW64Control10-3764(FIX)64(FIX)64(FIX)64(FIX)H TRAPEZIUM-20Control-82-48-20(FIX)-20(FIX)-20(FIX)-20(FIX)H PARABOLA-13Control-89-44-13(FIX)-13(FIX)-13(FIX)-13(FIX)H SYMMETRY13FIX131313131313H CORNER15Control06969(FIX)69(FIX)69(FIX)69(FIX)H SHIFT4Control081313413PIP CONTRASTFIX000000PIP TINTFIX000000PIP PAL V.POSFIX121212121212PIP NTSC V.POSFIX121212121212PIP H.POSFIX121212121212
27V 1.3R23V 1.3R25V 1R
27V 1R20V 1R15" FLAT
TXK2767CL25D4W
TXK2550TXK2554TXK2566TXK2567
CL663BW
TXK2750TXK2754
TXK2060TXK2066TXK2067
CT-15A8
VIDEO ADJUST1
INIT
RED CUT OFF127Control127127127127127127GREEN CUT OFF127FIX127127127127127127BLUE CUT OFF127Control127127127127127127RED DRIVE127Control150127127127127127GREEN DRIVE127FIX127127127127127127BLUE DRIVE127Control170127127127127127SUB BRIGHT110Control100110100100114110SUB CONTRAST52Control525252525252SUB COLOR27FIX505050505067SUB TINT30FIX707070703015BCL THRESHOLD62FIX605458587040BCLGAIN8FIX888888BCL TIME13FIX101010101013DVD SUB TINT90FIX100100100100100120N. YC DELAY0FIX333334
B STRETCH-BTHR
NTSC COMB FILTER
EHT TIME
DTI BAND
INCH
Model
25V 1R
27V 1R
20V 1R
15" FLAT
CT-15A8
PEAK WHITE LIMLT
SOFT LIMIT SLOPE B
HARD LIMIT
MODULATION ON/OFF
LIMIT VALUE
VELOCITY DELAY
INCH
Model
VIDEO ADJUST2INIT
B STRETCH-BTHR
B DTRETCH-BTLT8FIX888888
B STERTCH-BAM4FIX444444
CORING31FIX313131313131
NTSC COMB FILTER
RGB BRIGHT0FIX000000
RG B CONTRAST0FIX000000
EHT TIME
EHT VERTICALFIX606060606060
DTI CORINGFIX000000
DTI GAINFIX111111
DTI BAND
EHT OFFSETFIX000000
EHT HORIZONTALFIX000000
50FIX505050505050
1FIX111111
0FIX000000
FIX111111
27V 1.3R23V 1.3R25V 1R27V 1R20V 1R15" FLAT
TXK2767
CL25D4W
TXK2550
TXK2554
TXK2566
TXK2567
CL663BW
TXK2750
TXK2754
TXK2060
TXK2066
TXK2067
INCH
Model
VIDEO ADJUST3INIT
PEAK WHITE LIMLT
SOFT LIMIT SLOPE B
HARD LIMIT
MODULATION ON/OFF
A TILT POINT0FIX
B TILT POINT0FIX
GAIN 1 (VIDEO)FIX
DELAY 1 (VIDEO)FIX
PEAK VIDEO REFFIX
PEAK VIDEO GAINFIX
LIMIT VALUE
VELOCITY DELAY
VELOCITY CORINGFIX
ACC-REF20FIX
ACCR21FIX
255FIX
255FIX
4FIX
0FIX
FIX
FIX
27V 1.3R23V 1.3R25V 1R
TXK2550
TXK2767CL25D4W
255255255255255255
444444
255255255255255255
000000
000000
114114114114114114
111111111111
333333
000000
000000
747474747474
777777
101010101010
202020202020
212121212121
TXK2554
TXK2566
TXK2567
CL663BW
27V 1R
TXK2750
TXK2754
20V 1R
TXK2060
TXK2066
TXK2067
15" FLAT
CT-15A8
CT-15A8
Page 9
Alignment and Adjustments
Samsung Electronics4-9
“Soft Limit” is that Limitting
the peak white without
feed-back, but “Peak Limit” is
that with feed-back for white
peak level
OTHERS
VSU108FIX108104100100104110
VSU2FIX000000
H QEW0FIX000000
H ZOOM Parabola8FIX-22-358888
H 16:9 Parabola-10FIX813-18-18-18-10
TTX H Shift0FIX000000
PAL V SHIFTFIXOFFSETOFFSETOFFSETOFFSETOFFSETOFFSET
INCH
Model
INIT
27V 1.3R
TXK2767
23V 1.3R
CL25D4W
25V 1R27V 1R20V 1R15" FLAT
TXK2550
TXK2554
TXK2566
TXK2567
CL663BW
PAL H SHIFTFIXOFFSETOFFSETOFFSETOFFSETOFFSETOFFSET
Melidy Volume5FIX777777
RED CUT OFF
GREEN CUT OFF
BLUE CUT OFF
RED DRIVE
GREEN DRIVE
BLUE DRIVE
SUB BRIGHT
SUB CONTRAST
SUB COLOR
SUB TINT
BCL THRESHOLD
BCLGAIN
BCL TIME
DVD SUB TINT
N. YC DELAY
SIM-408A USA,LATIN FACTORY (VDP IC VDP3130Y)
INCH
Model
INCHMODEL
4-8-3(B) VIDEO ADJUST 1
DEFLECTION
H Bow
H Angle
H Dscc
V SHIFT
V AMP
V SLOPE
V SC-7FIX-6-6-6-6
H E
W64 Control1064(FIX)4310
H TRAPEZIUM
H PARABOLA
H SYMMETRY
H CORNER
H SHIFT
PIP CONTRAST
PIP TINT
PIP PAL V.POS
PIP NTSC V.POS
PIP H.POS
VIDEO ADJUST1
RED CUT OFF
GREEN CUT OFF
BLUE CUT OFF
RED DRIVE
GREEN DRIVE
BLUE DRIVE
SUB BRIGHT
SUB CONTRAST
SUB COLOR
SUB TINT
BCL THRESHOLD
BCLGAIN
BCL TIME
DVD SUB TINT
N. YC DELAY
INIT
B STRETCH-BTHR
B DTRETCH-BTLT
B STERTCH-BAM
CORING
NTSC COMB FILTER
RGB BRIGHT
RG B CONTRAST
EHT TIME
EHT VERTICAL
DTI CORING
DTI GAIN
DTI BAND
EHT OFFSET
EHT HORIZONTAL
A TILT POINT
B TILT POINT
GAIN 1 (VIDEO)
DELAY 1 (VIDEO)
PEAK VIDEO REF
PEAK VIDEO GAIN
LIMIT VALUE
VELOCITY DELAY
VELOCITY CORING
INCH
Model
INCH
Model
VIDEO ADJUST2
B STRETCH-BTHR
B DTRETCH-BTLT
B STERTCH-BAM
CORING
NTSC COMB FILTER
RGB BRIGHT
RG B CONTRAST
EHT TIME
EHT VERTICAL
DTI CORING
DTI GAIN
DTI BAND
EHT OFFSET
EHT HORIZONTAL
INCH
Model
27V 1.3R15" FLAT
INIT
50FIX50505050
8FIX8888
4FIX4444
31FIX31313131
1FIX3333
0FIX0000
0FIX0000
0FIX8888
60FIX60606060
0FIX0000
1FIX1111
1FIX1111
0FIX0000
0FIX0000
TXK2768CL15A8
21" FLAT
CL21A8
VIDEO ADJUST3
PEAK
WHITE LIMLT
SOFT LIMIT SLOPE B
HARD LIMIT
MODULATION ON/OFF
A TILT POINT
B TILT POINT
GAIN 1 (VIDEO)
DELAY 1 (VIDEO)
PEAK VIDEO REF
PEAK VIDEO GAIN
LIMIT VALUE
VELOCITY DELAY
VELOCITY CORING
ACC-REF20FIX20202020
ACCR21FIX21212121
INCH
Model
27V 1.3R15" FLAT
INIT
255FIX255255255255
4FIX4444
255FIX255255255255
0FIX0000
0FIX0000
0FIX114114114114
11FIX11111111
3FIX3333
0FIX0000
0FIX0000
127FIX127747474
7FIX7777
2FIX2101010
TXK2768CL15A8
21" FLAT
CL21A8
25" FLAT
CL25A6
25" FLAT
CL25A6
Page 12
Alignment and Adjustments
4-12Samsung Electronics
4-8-3(E) OTHERS
15" FLAT
21" FLAT
25" FLAT
CL15A8
OTHERS
INIT
H QE
H ZOOM Parabola
H 16:9 Parabola
DVD TINT CONTROL
PAL V SHIFT