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D-7 Front Jumper Locations and Pin Definitions
Jumper
Open: No reset (Default)
JP18
Closed: Reset
Open: 45º C
JP25
Pins 1-2: 50º C (Default)
Pins 2-3: 55º C
Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between
optional settings. Jumpers create shorts be-
tween two pins to change the function of the
connector. Pin 1 is identified with a square
solder pad on the printed circuit board. Note:
On two pin jumpers, "Closed" means the
jumper is on and "Open" means the jumper
is off the pins.
*The buzzer sound indicates that a condition requiring immediate attention has
occurred.
The buzzer alarm is triggered by the following condition:
System temperature over 50º Celsius.
JP18
Figure D-2: Front Jumpers
Socket Settings
Setting
D-5
Appendix D: Backplane
JP25
Note
Buzzer reset*
Overheat temperature setting
Connector
Pins
Jumper
Setting
3
2
1
3
2
1
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