IBM 8488 Hardware Maintenance Manual - Page 78

Microprocessor

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Microprocessor and heat sink Before you begin: v Read the "Installation guidelines" on page 25. v Read Appendix B, "Safety information," on page 143. v Review the information in "System reliability guidelines" on page 25. To remove the microprocessor and heat sink, complete the following steps. DIMMs Heat-sink release levers Microprocessor 2 Heat sink 2 VRM Microprocessor baffle assembly Microprocessor air baffle 1. Turn off the server and remove external cables. 2. Remove the side cover (see "Removing the side cover" on page 28). 3. Remove the frame-support bracket (see "Removing and installing the support bracket" on page 32). 4. Disconnect any cables that impede access to the microprocessor. 5. Remove the heat sink from the microprocessor: a. Press the microprocessor-baffle release lever down, move it toward the other microprocessor, and lift it up to the open position. b. Slide the heat-sink assembly toward the front of the server and tip the rear flange out of the heat-sink socket. c. Lift the heat sink up and out of the server. Note: It might be necessary to gently twist the heat sink to loosen it from the microprocessor. Important: Be careful when handling the microprocessor and heat sink. If the thermal grease between the microprocessor and heat sink will be reused, do not contaminate it. If replacement thermal grease is provided with the replacement part, be sure to remove all traces of existing thermal grease from the remaining part before applying the new thermal grease. 68 xSeries 226 Type 8488 and 8648: Hardware Maintenance Manual and Troubleshooting Guide

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Microprocessor
and
heat
sink
Before
you
begin:
v
Read
the
“Installation
guidelines”
on
page
25.
v
Read
Appendix
B,
“Safety
information,”
on
page
143.
v
Review
the
information
in
“System
reliability
guidelines”
on
page
25.
To
remove
the
microprocessor
and
heat
sink,
complete
the
following
steps.
DIMMs
Heat-sink
release levers
Heat sink 2
Microprocessor 2
Microprocessor
baffle assembly
Microprocessor
air baffle
VRM
Heat sink 2
1.
Turn
off
the
server
and
remove
external
cables.
2.
Remove
the
side
cover
(see
“Removing
the
side
cover”
on
page
28).
3.
Remove
the
frame-support
bracket
(see
“Removing
and
installing
the
support
bracket”
on
page
32).
4.
Disconnect
any
cables
that
impede
access
to
the
microprocessor.
5.
Remove
the
heat
sink
from
the
microprocessor:
a.
Press
the
microprocessor-baffle
release
lever
down,
move
it
toward
the
other
microprocessor,
and
lift
it
up
to
the
open
position.
b.
Slide
the
heat-sink
assembly
toward
the
front
of
the
server
and
tip
the
rear
flange
out
of
the
heat-sink
socket.
c.
Lift
the
heat
sink
up
and
out
of
the
server.
Note:
It
might
be
necessary
to
gently
twist
the
heat
sink
to
loosen
it
from
the
microprocessor.
Important:
Be
careful
when
handling
the
microprocessor
and
heat
sink.
If
the
thermal
grease
between
the
microprocessor
and
heat
sink
will
be
reused,
do
not
contaminate
it.
If
replacement
thermal
grease
is
provided
with
the
replacement
part,
be
sure
to
remove
all
traces
of
existing
thermal
grease
from
the
remaining
part
before
applying
the
new
thermal
grease.
68
xSeries
226
Type
8488
and
8648:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide