Acer AL1717 - Operation for Digital

Acer Service Manual
5
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).
2. Interface BOARD DIAGRAM
MCU
SCL
SDA
DDC
Interface Board
Red
Green
Blue
Vsync
Hsync
A/D
&
Scaling
&
OSD
To
LCD
module
EEPROM
Inverter/Power/Audio BD
(Including AC/DC Power
Supply , Inverter and
Audio)
Interface Board (VGA input)
Keypad BD
Flat panel (LVDS interface) and CCFL
AC input
Range 100V~240V
Host computer
(VGA signal input and DDC)