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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 definition
Main board connector
Power connectors(CN3,CN5)
CN3
Pin number
1
2
3
4
5
6
7
Notes:
CN3-Pin 3: Backlight on/off:
The system can turn on or turn off the backlight of TFT LCD Panel through the power supply unit path.
CN3-Pin 7: System power on / standby
System board will use this pin to control system power.
CN3-Pin 4: Control the luminance of backlight
The system can generate the PWN signal to control the strength of TFT LCD Panel's backlight through
this connector.
TFT LCD Panel(LVDS) Connector(CN4)
Signal name
+12VEXT
+12VEXT
BLON
ADJ
GND
GND
PWR-ON
CN5
Pin number
1
2
3
4
5
9
Signal name
+12V
GND
GND
+5V
STB
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