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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.
3-2-2 Connector definition
Main boa rd connector
Power connectors ( J16)
Ｐｉｎ ｎｕｍｂｅｒ
１
２
３
４
５
６
７
８
9
１０
１１
１２
１３
Notes:
J16-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.
J16-Pin 5: System power on / standby
System board will use this pin to control system power.
J16-Pin 2: 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
Ｓｉｇｎａｌ ｎａｍｅ
ＧＮＤ
ＢＬ－ＡＤＪＵＳＴ
ＢＬ－ＯＮ／ＯＦＦ
ＧＮＤ
ＰＷＲ－ＯＮ／ＯＦＦ
＋５Ｖ＿Ｓｔａｎｄｂｙ
＋５Ｖ＿Ｎｏｒｍａｌ
+5V_Normal
ＧＮＤ
ＧＮＤ
ＧＮＤ
＋１２Ｖ＿Ｎｏｒｍａｌ
＋１２Ｖ＿Ｎｏｒｍａｌ
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