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Chapter 3: Motherboard Connections
3.4 Jumper Settings
How Jumpers Work
To modify the operation of the motherboard, jumpers can be used to choose between optional
settings. Jumpers create shorts between two pins to change the function of the connector.
Pin 1 is identified with a square solder pad on the printed circuit board. See the diagram
below for an example of jumping pins 1 and 2. Refer to the motherboard layout page for
jumper locations.
Note:
On two-pin jumpers, Closed means the jumper is on and Open means the
jumper is off the pins.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
JLCDPWR1
Use this jumper to select the power voltage for the LVDS panel. Make sure that the
specifications of the cable is compatible with the panel to prevent damage.
Force Power On
Use jumper JLCDPWR1 (Pins 2-4/4-6) to select the Force Power On function when the AC
power cord is plugged in. When enabling force power on and AC power recovery, the system
will boot up automatically without pressing the power button. See the tables below for jumper
setting information.
LVDS Power Source Selection
Jumper Settings
Jumper Setting
Definition
Pins 1-3
3.3V (Default)
Pins 3-5
5V
Force Power On
Jumper Settings
Jumper Setting
Definition
Pins 2-4
Force Power On (Default)
Pins 4-6
Power Button On