Circuit Description - ViewSonic VX924 Service Manual

4. Circuit Description

1. Outline
1.1 Buttons on the front panel: Power On/Off button, button 2 (ENTER / INPUT SELECT), up arrow
button, down arrow button, button 1 (MENU).
1.2 The D-sub 15-pin connector, DVI-I connector and AC-IN jack are located on the back side of the cabinet.
1.3 The OSD menu includes the following functions:
Auto Image Adjust (only active under analog input)
Contrast/Brightness
Audio Adjust
Color Adjust
Information
Manual Image Adjust
Setup Menu
Memory Recall
1.4 Contrast and Brightness can be directly controlled with the UP / DOWN buttons.
2. Connectors
2.1 AC Socket: CEE22 type connector
2.2 Video signal connector for analog input: 15P Mini D-Sub
16
ViewSonic Corporation
CN6
PIN MNEMONIC
DB15HD
1 RV
17
2 GV
3 BV
4 NC
5 GND
6 RG
7 GG
8 BG
9 +5V
10 SG
11 NC
12 SDA
13 HS
14 VS
15 SCL
17
SIGNAL
Red Video
Green Video
Blue Video
None
Ground(DDC return)
Red GND
Green GND
Blue GND
+5V (for DDC)
Sync GND
None
DDC Data
Horizontal Sync
Vertical Sync
DDC Clock
Confidential - Do Not Copy
VX924