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17.9 1045
Option Processor
You can install an optional processor on a 20 or 25 MHz processor board.
On the 20-MHz board (below left), the jumper
and 2 if a 487SX processor is installed in connector 3 .
a 487SX processor in connector
3.
The 25-MHz processor board (below right) has a second processor connector
3
for either an optional 487SX processor (extended math capability) or
an 80486SX 25/50 MHz processor.
connector
3 , of the 25 MHz board, you do not have to remove the existing
processor (it is overridden).
Cover (1005)
Disconnect any cables necessary for removal.
Carefully insert the tip of a screwdriver between the processor and the
connector edge and gently twist the screwdriver (around all edges) until
the processor raises up.
When you reinstall the processor, align the beveled corner
beveled corner marked on the board.
Notes:
1.
On the 20-MHz board (left), the jumper
2 if an option processor is installed in connector 3 .
not a processor in connector
and 3.
2.
The processor connector
board (left), than it is on the 25-MHz board (right).
3.
A slight gap between the processor and the connector is normal.
IBM PS/2 Model 90 XP 486 and 95 XP 486 HMR
1045 Option Processor
2
must be in positions 1
3 , the jumper must be in positions 2 and
If you install an option processor in
PICTURE 41
2
must be in positions 1 and
3 , the jumper must be in positions 2
3
is in a different location on the 20-MHz
¦ Copyright IBM Corp. 1990, 1992
17.9 - 1
If there is not
1
with the
If there is
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