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5-8
Jumper Settings
To modify the operation of the serverboard,
jumpers can be used to choose between
optional settings.
between two pins to change the function
of the connector. Pin 1 is identifi ed with
a square solder pad on the printed circuit
board. See the serverboard layout pages
for jumper locations.
Note: On a two-pin jumper, "Closed" means
the jumper is on both pins and "Open" means
the jumper is either on only one pin or com-
pletely removed.
CMOS Clear
JBT1 is used to clear CMOS (which will also clear any passwords). Instead of pins,
this jumper consists of contact pads to prevent accidentally clearing the contents
of CMOS.
To Clear CMOS
1.
First power down the system and unplug the power cord(s).
2.
With the power disconnected, short the CMOS pads with a metal object such
as a small screwdriver.
3.
Remove the screwdriver (or shorting device).
4.
Reconnect the power cord(s) and power on the system.
Note: Do not use the PW_ON connector to clear CMOS.
Chapter 5: Advanced Serverboard Setup
Jumpers create shorts
5-15
3
2
1
Connector
Pins
Jumper
3
2
1
Setting
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