Service Manual
Model No.:
- 09 -
3-2-1 Function Description:
Main Board
Process signal which incept from exterior equipment then translate into signal that panel
can display.
3-2-2 Connector defi nition
Main board connector
Power connectors (J1,CN101)
J1
CN101
Pin number Signal name Pin number Signal name
1 +5V 1 GND
2 BL 2 GND
3 DIM 3 +5V
4
high voltage
4 +5V
5 GND 5 POWER ON/OFF
6 +5VSTB
7 +5V
8 +5V
9 GND
10 GND
11 GND
12 +12V
13 +12V
Notes:
J1-Pin 2: Backlight on/off:
The system can turn on or turn off the backlight of TFT LCD Panel through the power
supply unit path.
CN101-Pin 5: System power on / standby
System board will use this pin to control system power.
J1-Pin 3: Control the luminance of backlight
The system can generate the PWM signal to control the strength of TFT LCD Panel’s
backlight through this connector
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