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Service Manual
Model No.:
3-2-1 Function Description:
Main Board
Process signal which incept from exterior equipment then translate into signal that panel
can display.
Main board connector
Power connectors (J1, J5)
J1
Notes:
J1-Pin 4: Backlight on/off:
The system can turn on or turn off the backlight of TFT LED Panel through the power
supply unit path.
J5-Pin 9: 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 PWN signal to control the strength of TFT LED Panel's
backlight through this connector
J5
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