Replacing a microprocessor (all machine types), Replacing, Microprocessor – IBM THINKCENTER 8189 User Manual
Page 65: Machine, Types)

To
replace
the
power
supply,
do
the
following:
1.
Install
the
new
power
supply
and
insert
the
four
screws
that
hold
the
power
supply
in
place.
2.
Reconnect
all
power
supply
cables
to
the
system
board
and
the
drives.
See
3.
Go
to
Replacing
a
microprocessor
(all
machine
types)
To
remove
the
microprocessor,
do
the
following:
1.
Turn
off
the
computer
and
peripheral
devices
and
disconnect
all
external
cables
and
power
cords;
then,
remove
the
cover.
See
2.
Remove
any
air
baffles
or
ducts
that
cover
the
microprocessor.
3.
Disconnect
the
heat
sink
fan
cable
from
the
system
board.
Refer
to
Chapter
6.
Replacing
FRUs
59
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