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Chapter 4: Motherboard Connections
4.4 Jumpers
Explanation of Jumpers
To modify the operation of the motherboard, jumpers are used to choose between optional
settings. Jumpers create shorts between two pins to change the function associated with it.
Pin 1 is identified with a square solder pad on the printed circuit board. See the motherboard
layout page for jumper locations.
Note:
On a two-pin jumper, "Closed" means the jumper is on both pins and "Open" indicates
the jumper is either on only one pin or has been completely removed.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Front Control Board Signal Reset Jumper
Jumper JRU1 is used to configure the signal settings for the Front Control Board (JFP1).
Close pins 1 and 2 to reset the Front Control Board signals for power button use. Close pins
2 and 3 to configure JFP1 signals for UID LED use. The default setting is on pins 1-2 to reset
JFP1 for power button use.
Front Control Board Signal Reset Jumper (JRU1)
Jumper Settings
Jumper Setting
Definition
Pins 1-2
Reset JFP1 Signals for Power Button use (Default)
Pins 2-3
Configure JFP1 Signals for UID LED use