Circuit Description; Interface Board - ViewSonic VLCDS26104-3W Service Manual

3. Circuit Description

1. Interface Board

1.1 Power Supply (DC/DC Converter)
IC100 is a linear regulator that converts a 12V DC input voltage into regulated and stable
output voltages of 5V respectively.
1.2 Micro-Controller
IC400 (scaler) built-in a micro-controller and extra a flash ROM (IC402---39SF010). It plays a
major role in the digital control of the LCD monitor. IC400 acts as a Key control, DPMS power
saving control, auto-detect controller, and controller of IC400 to do image process.
ViewSonic Corporation
Function Block
Confidential – Do Not Copy
VX700-3