Circuit Description - ViewSonic VA2012w Service Manual

4. Circuit Description

1. Outline
1.1 Power On/Off, (2) Enter button, up arrow button, down arrow button, (1) MENU button, Volume "+" button,
Volume "-"button and 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.
Audio volume can be controlled with Volume "+" key ,Volume "-" key and UP/DN key when Audio Adjust
1.5
menu is active.
Pushing Mute key can disable audio output.
1.6
2. CONNECTORS
2.1 AC inlet : CEE22 typed connector
2.2 Audio : Line-in,
CN9
Line-in receptacle Line-in receptacle
(Line-in receptacle is green) (Line-in receptacle is green)
2.3 Video signal connector for analog input: 15P Mini D-Sub 2.3 Video signal connector for analog input: 15P Mini D-Sub
16
ViewSonic Corporation
1
1
5
4
3
2
CN6
DB15HD
17
PIN PIN MNEMONI MNEMONI SIGNAL SIGNAL
1 1 RV RV Red Video Red Video
2 2 GV GV Green Video Green Video
3 3 BV BV Blue Video Blue Video
4 4 NC NC None None
5 5 GND GND Ground Ground
return) return)
6 6 RG RG Red GND Red GND
7 7 GG GG Green GND Green GND
8 8 BG BG Blue GND Blue GND
9 9 +5V +5V +5V (for DDC) +5V (for DDC)
10 10 SG SG Sync GND Sync GND
11 11 NC NC None None
12 12 SDA SDA DDC Data DDC Data
13 13 HS HS Horizontal Sync Horizontal Sync
14 14 VS VS Vertical Sync Vertical Sync
15 15 SCL SCL DDC Clock DDC Clock
Confidential - Do Not Copy
14
(DDC (DDC
VA2012wb