4. Circuit Description
1.
Outline
1.1
Power On/Off, up arrow- button, down arrow button, (1) MENU button, (2) Enter button, Mute button on
the front panel.
1.2
D-sub 15pin connector, DVI-D connector, audio line-in receptacle, and AC-IN are located on the back side
of the cabinet.
1.3
OSD menu includes the following function;
Auto Image Adjust (only active under analog input)
Contrast/Brightness
Input Select
Audio Adjust
Color Adjust
Information
Manual Image Adjust
Setup Menu
Memory Recall
1.4
Contrast and Brightness can be directly controlled with UP / DOWN key.
1.5
Audio volume can be controlled with up key and down key when Audio Adjust menu is active.
1.6
Pushing Mute key can disable audio output.
2.
CONNECTORS
2.1
AC inlet : CEE22 typed connector
2.2
Audio : Line-in,
CN9
2
3
4
5
1
Line-in receptacle
(Line-in receptacle is green)
2.3
Video signal connector for analog input: 15P Mini D-Sub
PIN MNEMONI
SIGNAL
1 RV
Red
Video
2 GV
Green
Video
3 BV
Blue
Video
4 NC
None
5
GND
Ground (DDC return)
6 RG
Red
GND
7 GG
Green
GND
8 BG
Blue
GND
9
+5V
+5V (for DDC)
10 SG
Sync
GND
11 NC
None
12 SDA
DDC
Data
13 HS
Horizontal
Sync
14 VS
Vertical
Sync
15 SCL
DDC
Clock
CN6
DB15HD
1 6 2 7 3 8 4 9 5
11
12
13
14
15
10
16
17
15
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VA912-4_VA912b-4
