AOC QDI TFT1780PSA, Service Manual, Page: 4 / 34

17” LCD Color Monitor QDI TFT1780PSA
4
2. LCD Monitor Description
The LCD MONITOR will contain a main board, a power board and one key board which house the flat panel control
logic, brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Monitor Block Diagram
HOST Computer
AC-IN
100V-240V
Power board
(Include: adapter, inverter)
Flat Panel and
CCFL backlight
Main Board
RS232 Connector
For white balance
adjustment in factory
mode
CCFL Drive.
Video signal,
Key board