B-2 System Board Jumpers
CHANGING PROCESSOR JUMPER SETTINGS
Use the following procedure when replacing the installed processor with a faster speed
processor. Jumpers requiring setting changes include the Processor/Bus Speed and ATCLK
jumpers.
1.
Turn off and unplug the system and any connected external options.
WARNING:
System power must be off before
removing the cover and changing a jumper
setting.
2.
Remove the system unit cover (see Section 3, Option Installation, for cover
removal).
3.
Replace the processor (see Section 3 for processor upgrade procedures).
4.
Remove any expansion boards blocking access to the jumpers.
5.
Locate the Processor/Bus Speed, ATCLK, and Processor Voltage jumper blocks
on the system board (see Figure B-1).
6.
Set the Processor/Bus Speed and ATCLK jumpers per Figure B-2 and
Figure B-3.
CAUTION:
Unless updating the processor,
leave the processor jumpers at the factory
setting. Changing the settings jumpers could
damage the processor.
7.
Set the Processor Voltage jumper (see Figure B-2 and Figure B-3) on the system
board as follows:
NOTE:
System boards have either one or two
BF processor jumpers. The system board with
two BF jumpers are labeled BF0 and BF1 (see
the following figures).
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