12) GPIO_SET (GPIO Status Configuration Jumper)
Use this jumper to set the GPIO status of the LPT_GPIO header to HIGH or LOW.
1-2 Close: Set to HIGH level (Default)
2-3 Close: Set to LOW level.
1
1
13) GPIO_PWRSEL (GPIO Power Selection Jumper)
Move the jumper cap from the LPT_SEL jumper to this jumper to configure the LPT_GPIO header to support
GPIO device and also to specify the GPIO voltage.
1-2 Close: Set GPIO voltage to +12V.
2-3 Close: Set GPIO voltage to 5V.
1
1
14) LPT_SEL (LPT Configuration Jumper)
Place the jumper cap on the two pins to configure the LPT_GPIO header to support LPT device. Note: If
the jumper cap is removed from this jumper, be sure to place it on the GPIO_PWRSEL pins.
Short: Configure the LPT_GPIO header to support LPT device. (Default)
1
15) BL_SW (Back Light Switch)
The Back Light switch provides the function for screen back light adjustment.
Pin No.
Definition
1
BL_DOWN
2
BL_UP
1
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