Acer Service Manual
Chapter 3- CIRCUIT THEORY
1. Monitor Block Diagram
The LCD Monitor contains an interface board, and inverter/power/Audio board, keypad board and flat
panel. In Inverter/power/Audio board, power section supplies +14V & +5V for Inverter/Audio and
Interface board used. The inverter section drives the backlight of panel and the DC-DC conversion. The
Audio section drives speaker (2 x1W).
Inverter/Power/Audio BD
(Including AC/DC Power
Supply , Inverter and
Audio)
Interface Board
Keypad BD
AC input
Range 100V~240V
Host computer
(DVI signal input)
OPTION
Host computer
(VGA signal input and
DDC)
Flat panel (LVDS interface) and CCFL
2. Interface BOARD DIAGRAM
MCU
SCL
SDA
DDC
Interface Board
Red
Green
Blue
Vsync
Hsync
A/D
&
Scaling
&
OSD
To
LCD
module
EEPROM
5
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