SAMSUNG CS-21A9WQ, CS15A8WT7X Service Manual Alignment & Adjustment

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

4-5 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

21PF/TOSHIBA

21” 1.7R/SDI
21” 1.7R/JCT

15 PF/SDI

No

1
2

3
4

IBRM

220
220

220
220

WDRV

35
35
35

35

CDL

180
180
200

180

COLR G B

(Smallest Value)

65

100
150
100

Table 1. Screen Adjustment Table

Alignment and Adjustments

Samsung Electronics 4-3

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”. (Refer to table 2.)

- 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.

Area

East South Asia

Middle East Asia

& Africa

CIS

Inch

21PF

21” 1.7R

15PF
21PF

21” 1.7R

21PF

High

X

Y

Luminance

(ft)

Low

X

Y

Luminance

(ft)
265
265
265
290
290

272

265
265

265
300
300

270

65
60

95
65
55

65

265
265

265
290
290

265

265
265

265
300
300

266

1.2

1.5

2.0

1.2

1.5

2.7

Table 2. White Balance Table

Alignment and Adjustments

4-4 Samsung 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 OFF PICTURE ON

PICTURE ON

xx xx xx

Others

DISPLAY

DISPLAY

*

()

()

MENU

FACTORY

MUTE

Alignment and Adjustments

Samsung Electronics 4-5

4-8-2 Deflection (Memory Data)

4-8-2(A) GEOMETRIC ADJUSTMENT VALUE

No.

1
2

3
4
5
6

7
8
9

10
11
12
13

14
15

16
17

OSD

V Shift
V Amp

V Slope
V SC
H EW
H Trapizium

H Parabola
H Symmetry

H Corner
H Shift

PIP Contrast
PIP Tint

PIP H.Move
PIP V.Move
PIP PAL V.Pos
PIP NTSC V.Pos
PIP H.Pos

Range

-128 ~ 127

-128 ~ 127

-128 ~ 127

-128 ~ 127

-128 ~ 127

-128 ~ 127

-128 ~ 127

-128 ~ 127

-128 ~ 127

-128 ~ 127
0 ~ 15
0 ~ 63

0 ~ 7

0 ~ 7
0 ~ 255
0 ~ 255
0 ~ 255

Function

Vertical Shift
Vertical Amplitude

Vertical Slope
Vertical S-Correction

Horizontal East West Width
Horizontal Trapezium

Horizontal Parabora
Horizontal Symmetry

Horizontal Corner
Horizontal Shift
PIP Contrast

PIP Tint (Hue)
PIP Horizontal Move (PIP Picture)

PIP Vertical Move (PIP Picture)
PIP PAL System Verical Position (PIP Box)
PIP NTSC System Vertical Position (PIP Box)
PIP Horizontal Position (PIP Box)

Remark

PIP Option

Fixed Value

Initial
Value

-54
15

-2

-15
61

-8

-3

12

-32
10

0
0

0
3

33
33
42

Alignment and Adjustments

4-6 Samsung Electronics

4-8-2(B) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT)

1 V Shift

V Slope

2

3 H EW

6 V Amp

V SC

7

8

H Trapizium

4 H Parabola

5 H Corner

9

10

H Symmetry

H Shift

Alignment and Adjustments

Samsung Electronics 4-7

4-8-2(C) VIDEO ADJUST 1

No.

1
2

3
4
5
6

7
8
9

10
11

12
13

14
15

OSD

Red Cufoff
Green Cutoff
Blue Cutoff

Red Drive
Green Drive
Blue Drive

Sub Bright
Sub Contrast
Sub Color

Sub Tint
BCL Threshold
BCL Gain
BCL Time
TTX Contrast
YC Delay

Range

0 ~255
0 ~255

0 ~255
0 ~255

0 ~255
0 ~255

0 ~ 200

0 ~ 63
0 ~ 27

0 ~ 100
0 ~ 255

0 ~ 15
0 ~ 15

0 ~ 255

0 ~ 8

Function

Adjust Red Cutoff Level
Adjust Green Cutoff Level
Adjust Blue Cutoff Level

Adjust Red Output Gain
Adjust Green Output Gain

Adjust Blue Output Gain
Adjust Brightness Level

Adjust Contrast Level
Adjust Color Level

Adjust Tint

Adjust Beam Control Limit
Refer to Note 1.

Adjust OSD/TTX Contrast
Refer to Table 3.

Remark

Low Light

High Light

Low Light
High Light

Not to be adjusted

Refer to table 4.

Not to be adjusted

Refer to table 4.

Initial
Value

127
127
127
127
127
127
100

52
27

30
77

8
13
90

*

Fixed Value

Note 1. Beam Control Limit Characteristic

WDRGB

BCL THESHOLD

1.8mA

1.6mA

MIN

BCL GAIN

MAX

Table 3. YC Delay Adjustment Table

YC

Delay

Value

PAL

Def.

3

BG

3

DK

6

I

6

Def.

3

BG

3

DK

5

I

8

SECAM

NTSC

Def.

0

beam

50

IRE

Alignment and Adjustments

4-8 Samsung Electronics

Table 4. Variable Factory Item

Area

East South Asia

Middle East Asia

& Africa

CIS

Inch

21PF

21” 1.7R

15PF
21PF

21” 1.7R

21PF

BCL Threshold

TTX Contrast

Remark

62
40
40
62

40
62

90
90

100

90
90
90

OSD

B stretch-BTHR
B stretch-BTLT
B stretch-BAM

Coring
RGB Bright

RGB Contrast
EHT Time
EHT Compensation

✐

No.

1
2
3

4
5
6

7
8

Range

0 ~ 55
0 ~ 15
0 ~ 31

0 ~ 31

0 ~ 255

80

0 ~ 15

0 ~ 255

Initial
Value

50

8
4

31

0
0

0

60

Function

Black Stretch Threshold
Black Stretch Tilt Position
Black Stretch Amount
Luma Peaking Filter Coring

External RGB Brightness
External RGB Contrastness

Electronic High Tension Response Time
EHT Compensation Coefficient

Remark

Coring : The Value of Center Frequency for the active bandwidth.

4-8-2(D) VIDEO 2 ADJUST

1

✐

1

Alignment and Adjustments

Samsung Electronics 4-9

4-8-2(E) VIDEO 3 ADJUST

No.

1
2

3
4
5
6

7

OSD

Peak Threshold
Soft Limit Slope B
Hard Limit
Peak Video Ref

Peak Video Gain
ACC-REF(PAL/NTSC)
ACCR(SECAM)

Range

0 ~ 255

0 ~ 15

0 ~ 255

0 ~ 4
0 ~ 5

0 ~ 20
0 ~ 39

Initial
Value

255

2

255

0
0

20
21

Function

White Peak Level Threshold

Refer to Picture Below

White Peak Level Threshold Reference
White Peak Level Threshold Gain

Auto Color Control

Remark

Refer to Note

Below

“Soft Limit” is that Limitting

the peak white without
feed-back, but “Peak Limit” is
that with feed-back for white
peak level

Note 2. Soft Limit & Hard Limit Characteristics

✐

Slope 1 [0...15]

0
2
4
6

8
10
12
14

tilt 2 [0...511]

Output

511

400

300

200

100

0

tilt 1 [0...511]

0

100 200 300 400 500 600 700 800 900 1023

Part 1 Part 2

0
2

4
6
8

10

12
14

Slope 2 [0...15]

Hard limiter

Soft Limit Slope B

range=256...511

Li

Alignment and Adjustments

4-10 Samsung Electronics

ITEM(OSD) Control Description

Language ESAsia ENGLISH/VIETNAM/THAI/INDONESIA/MALAYSIA

A2/NICAM A2 Stereo / Nicam Stereo Model

Sound Virtual Dolby Virtual Dolby Model

Mono Mono Model
Line-Stereo Line stereo Model

4:3 Normal / Zoom / 16:9
Wide Wide CRT ( 16:9 )

CRT Q(12.8:9) Plus / Normal / Zoom / 16:9

4:3-16:9 Normal / Zoom
Q - 16:9 Plus / Normal / Zoom
1Scart Built in 1 Scart Model
2Scart Built in 2 Scart Model

2scart+S Built in 2 Scart +SVHS JACK Model

AV Mode 1RCA Built in RCA 6P / RCA 4P Model

2RCA Built in RCA 9P Model
2RCA+S Built in RCA 9P + SVHS JACK Model
2RCA+S+D Built in RCA 9P + SVHS JACK Model +

DVD JACK Model

2RCA+D Built in RCA 9P + DVD JACK Model

X-Ray

On X-ray detection function on
Off X-ray detection function off

Tilt Control

On CRT Tilt control function on ( wide / 29PF CRT)
Off CRT Tilt control function off

Auto FM

On automatic change from NICAM to FM depends on NICAM error rate
Off automatic change from NICAM to FM depends on NICAM syncronization

PIP

Off no PIP function
1 - tuner 1 Tuner PIP function

2 - tuner 2 Tuner PIP function
West Europe English/German/Skandinavian/Italian

French/Spainsh/Czech

East Europe Polish/Czech/Rumanian/Slovenian/Croatian/

French/Skandinavian/German/Italian

Txt Language Russian Russian/Ukranian/Estonian/Czech/German/

Lettish/English

Greek-Turkey English/Turkey/Greek/French/Skandinavian/German/Spainsh/Italian
Arabic English/Arabic/French

Farsi English/Farsi/French
Arab-Hebrew Arabic/Hebrew

LNA

On Built in LNA Tuner
Off Built in Normal Tuner

Equalizer

On Include in Equalizer function ( MSP34X0D)
Off Without Equalizer function (MSP34X5D)

High deviate

On High deviation mode on MSP34XX
Off Normal mode on MSP34XX

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

4-8-2(F) OPTION 1

Micom Spec : SIM-806EA

TTX On/Off

On TTX Model
Off W/O - TTX Model

Alignment and Adjustments

Samsung Electronics 4-11

ITEM(OSD) Control Description

Language

Arab English/Arab/French/Pakistan
Iran English/Persian/French/Turkey
Libya English/Libya/French
CIS English/Russia
A2/NICAM A2 Stereo / Nicam Stereo Model

Sound

Virtual Dolby Virtual Dolby Model
Mono Mono Model
Line-Stereo Line stereo Model

4:3 Normal / Zoom / 16:9
Wide Wide CRT ( 16:9 )

CRT Q(12.8:9) Plus / Normal / Zoom / 16:9

4:3-16:9 Normal / Zoom
Q - 16:9 Plus / Normal / Zoom
1Scart Built in 1 Scart Model
2Scart Built in 2 Scart Model

2scart+S Built in 2 Scart +SVHS JACK Model

AV Mode 1RCA Built in RCA 6P / RCA 4P Model

2RCA Built in RCA 9P Model
2RCA+S Built in RCA 9P + SVHS JACK Model
2RCA+S+D Built in RCA 9P + SVHS JACK Model + DVD JACK Model

2RCA+D Built in RCA 9P + DVD JACK Model

X-Ray

On X-ray detection function on
Off X-ray detection function off

Tilt Control

On CRT Tilt control function on ( wide / 29PF CRT)
Off CRT Tilt control function off

Auto FM

On automatic change from NICAM to FM depends on NICAM error rate
Off automatic change from NICAM to FM depends on NICAM syncronization

PIP

Off no PIP function
1 - tuner 1 Tuner PIP function

2 - tuner 2 Tuner PIP function
West Europe English/German/Skandinavian/Italian/French/Spainsh/Czech

East Europe Polish/Czech/Rumanian/Slovenian/Croatian/

French/Skandinavian/German/Italian

Txt Language Russian Russian/Ukranian/Estonian/Czech/German/Lettish/English

Greek-Turkey English/Turkey/Greek/French/Skandinavian/German/Spainsh/Italian
Arabic English/Arabic/French
Farsi English/Farsi/French

Arab-Hebrew Arabic/Hebrew

LNA

On Built in LNA Tuner
Off Built in Normal Tuner

Equalizer

On Include in Equalizer function ( MSP34X0D)
Off Without Equalizer function (MSP34X5D)

High deviate

On High deviation mode on MSP34XX
Off Normal mode on MSP34XX

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

4-8-2(G) OPTION 2

Micom Spec : SIM-806MA

TTX On/Off

On TTX Model
Off W/O - TTX Model

Alignment and Adjustments

4-12 Samsung Electronics

ITEM(OSD) Control Description

A2/NICAM A2 Stereo / Nicam Stereo Model

SOUND

Virtual Dolby Virtual Dolby Model
Mono Mono Model

Line-Stereo Line stereo Model
4:3 Normal / Zoom / 16:9
Wide Wide CRT ( 16:9 )

CRT Q(12.8:9) Plus / Normal / Zoom / 16:9

4:3-16:9 Normal / Zoom
Q - 16:9 Plus / Normal / Zoom

1Scart Built in 1 Scart Model
2Scart Built in 2 Scart Model

2scart+S Built in 2 Scart +SVHS JACK Model

A/V Mode 1RCA Built in RCA 6P / RCA 4P Model

2RCA Built in RCA 9P Model
2RCA+S Built in RCA 9P + SVHS JACK Model
2RCA+S+D Built in RCA 9P + SVHS JACK Model + DVD JACK Model

2RCA+D Built in RCA 9P + DVD JACK Model

X-Ray

On X-ray detection function on
Off X-ray detection function off

Tilt Control

On CRT Tilt control function on ( wide / 29PF CRT)
Off CRT Tilt control function off

Auto FM

On automatic change from NICAM to FM depends on NICAM error rate
Off automatic change from NICAM to FM depends on NICAM syncronization

Off no PIP function

PIP 1 - tuner 1 Tuner PIP function

2 - tuner 2 Tuner PIP function

LNA

On Built in LNA Tuner
Off Built in Normal Tuner

Equalizer

On Include in Equalizer function ( MSP34X0D)
Off Without Equalizer function (MSP34X5D)

High deviate

On High deviation mode on MSP34XX
Off Normal mode on MSP34XX

No.

1

2

3

4

5

6

7

8

9

10

4-8-2(H) OPTION 3

Micom Spec : SIM-806E1

Alignment and Adjustments

Samsung Electronics 4-13

ITEM(OSD)

MRCR G B
MRWDG

IBRM
WDRV

CDL
COLR G B

Control

No Control
No Control

0 ~ 255
0 ~ 255

0 ~ 255
0 ~ 255

Description

Measure of Cutoff Gain
Measure of Green Drive Gain

Internal Brightness offset value by Read
Measurement

White Drive Value
Cathode Drive Level

Cathode Cutoff Level

Initial Value

110 110 110

110

220 Refer to Screen adjust

table

35

180

65 70 75

No.

1
2

3
4

5
6

4-8-2(I) G2 - ADJUSTMENT

ITEM(OSD)

VSU
H QEW
H Zoom Parabola

H 16:9 Parabola
TTX Position

Mono Sound
System

V Slice level
Melody Volume

Control

96 ~ 111

-30 ~ 30

-15 ~ 15

-15 ~ 15

-30 ~ 30
BG
DK

I

M

0 ~ 3

0 ~ 20

Description

Vertical Setup TIme (Large Value time)
Horizontal EW data offset to plus screen
Horizontal Palabola offset to zoom screen
Horizontal Palabola offset to 16:9 screen
Horizontal shift in TTX Mode

Initial Sound System of Mono Model

Vertical Sync Slice level Setting
Melody Sound Volume level Setting

Initial Value

108

0
8

-18
0

BG

2
5

No.

1
2

3
4

5

6

7
8

4-8-2(J) OTHERS

4-9-1 Pin Layout

Alignment and Adjustments

4-14 Samsung Electronics

4-9 MICOM

Write Protect

EEPROM SDA

EEPROM SCL

Bus-Stop

Main SDA

Main SCL

Sound Reset

Video Reset

VDD 2.5V

GND

VDD 3.3V

CVBS Input

VDD 2.5V

GND

AFT

Scart1 Ident
Scart2 Ident

Key 1

H-Sync

V-Sync

Key 3
Key 2

X-Ray Protect

IR Input

Stand-By LED

Time LED

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

I/O
I/O
IO
I/O
I/O
I/O
I/O
I/O

ADC
ADC
ADC
ADC

I/O
I/O
I/O
I/O
I/O
I/O

S
D
A

5

5

5
X

PWM

I/O
I/O

I/O

52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27

Tilt
N.C.
Power

Sound Mute
N.C.

N.C.
PX. Y

PX. Y
VDD 3.3V

GND
VDD 2.5V

CORE
OSD-B
OSD-G
OSD-R

VDD 2.5V
GND
X-TAL Out

X-TAL In
MICOM Reset

N.C.
N.C.

VDD 3.3V
GND

N.C.
Relay

Alignment and Adjustments

Samsung Electronics 4-15

4-9-2 Pin Assignment Specification

DESCRIPTION

EEPROM Write Protection
EEPROM Serial Data Line

EEPROM Serial Clock Line
Disable Micom IIC

Peripheral IC Serial Data Line
Peripheral IC Serial Clock Line

MSP IC Initial Control
VDP IC Initial Control

TTX CVBS Input
Analog B+

Analog Ground
Auto Fine Tuning Control
Scart1 Ident

Scart2 Ident
Key1 Input

Horizontal Sync Input
Vertical Sync Input

Key3 Input
Key2 Input

X-Ray Protection
Remocon Signal Input

LED Drive Output(Red)
LED Drive Output(Green)

PIN NO

1
2
3

4
5

6
7

8

9
10
11
12
13
14
15

16
17
18
19
20

21
22
23

24
25

26

FUNCTION

I/O
I/O
I/O

I/O
I/O

I/O
I/O
I/O
Vdd

GND
Vdd
CVBS
Vdd

GND
ADC

ADC
ADC
ADC
HS

VS
I/O

I/O
I/O
I/O

I/O
I/O

ASSIGN

Write Protect
ROM SDA
ROM SCL
Bus Stop

Main SDA
Main SCL
Sound Reset

Video Reset
VDD 2.5V

VDD 3.3V
CVBS Input

VDD 2.5V

AFT
SC1-ID
SC2-ID
Key1
H-Sync

V-Sync
Key3
Key2
X-Ray
IR-In
STD-LED
TIM-LED

IN/OUT

Out

I/O
I/O
In

I/O
I/O

Out
Out

In

In
In

In
In

In
In
In
In

In
In
Out
Out

ACTIVE H/L

Low

Low

Low
Low

Alignment and Adjustments

4-16 Samsung Electronics

4-9-2 Pin Assignment Specification (Continued)

PIN NO

27
28

29
30
31

32
33
34

35
36

37
38
39
40

41
42
43
44

45
46
47
48
49
50
51
52

FUNCTION

I/O
N.C.
GND
Vdd
N.C.

N.C.
Reset

X-In
X-Out

GND
Vdd
R

G
B
COR
Vdd

GND
Vdd

I/O
I/O

N.C.
N.C.

I/O
I/O
N.C.
I/O

ASSIGN

Relay

VDD 3.3V

Reset
X-TAL In
X-TAL Out

VDD 2.5V
OSD-R

OSD-G
OSD-B
CORE

VDD 2.5V

VDD 3.3V
PX.Y

PX.Y

S-Mute
Power

IN/OUT

Out

In
In

Out

Out
Out
Out
Out

In
Out

Out
Out

ACTIVE H/L

Low

Low
6MHz
6MHz

High
Low

DESCRIPTION

Activate Degausssing Coil
Not Used (Programmed Gound Level)

Analog Ground
Not Used (Programmed Gound Level)

Not Used (Programmed Gound Level)
Micom Hardware Reset
Crystal Oscillation Input
Crystal Oscillation Output

Analog Ground
Analog B+
OSD/TTX Output (Red)
OSD/TTX Output (Green)

OSD/TTX Output (Blue)
Fast Blank/Half Contrast Output

When The Caption Function Adopted, Used.

Not Used (Programmed Gound Level)

Sound Amp Mute
Picture On/Off Control

Not Used (Programmed Gound Level)