IBM 8649 Hardware Maintenance Manual - Page 87

Microprocessor

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Microprocessor and heat sink Before you begin: v Read "Installation guidelines" on page 33 v Read "Safety information" on page 129 v Review the information in "System reliability considerations" on page 33 To remove the microprocessor and heat sink, complete the following steps: 1. Turn off the server and remove external cables. 2. Remove the side cover and frame-support bracket (see "Removing the side cover" on page 36 and "Removing and installing the support bracket" on page 38). 3. Disconnect any cables that impede access to the microprocessor. 4. Remove the heat sink from the microprocessor: a. Loosen the two captive screws on either side (in leaf spring enclosures) of the fansink. b. With the two captive screws loosened, pivot the leaf spring assemblies outward and out of the notches on the fan sink assembly. 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 adhesive material on the microprocessor. If the adhesive material on the microprocessor will be reused, do not contaminate it. If replacement adhesive material is provided with the replacement part, be sure to remove all traces of existing adhesive material from the microprocessor before applying the new adhesive material. 5. Rotate the microprocessor socket lever arm upward to its maximum vertical position, and lift the microprocessor up and out of the server. 6. To install a microprocessor, see "Installing an additional microprocessor" on page 57 Chapter 5. Field replaceable units 77

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Microprocessor
and
heat
sink
Before
you
begin:
v
Read
“Installation
guidelines”
on
page
33
v
Read
“Safety
information”
on
page
129
v
Review
the
information
in
“System
reliability
considerations”
on
page
33
To
remove
the
microprocessor
and
heat
sink,
complete
the
following
steps:
1.
Turn
off
the
server
and
remove
external
cables.
2.
Remove
the
side
cover
and
frame-support
bracket
(see
“Removing
the
side
cover”
on
page
36
and
“Removing
and
installing
the
support
bracket”
on
page
38).
3.
Disconnect
any
cables
that
impede
access
to
the
microprocessor.
4.
Remove
the
heat
sink
from
the
microprocessor:
a.
Loosen
the
two
captive
screws
on
either
side
(in
leaf
spring
enclosures)
of
the
fansink.
b.
With
the
two
captive
screws
loosened,
pivot
the
leaf
spring
assemblies
outward
and
out
of
the
notches
on
the
fan
sink
assembly.
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
adhesive
material
on
the
microprocessor.
If
the
adhesive
material
on
the
microprocessor
will
be
reused,
do
not
contaminate
it.
If
replacement
adhesive
material
is
provided
with
the
replacement
part,
be
sure
to
remove
all
traces
of
existing
adhesive
material
from
the
microprocessor
before
applying
the
new
adhesive
material.
5.
Rotate
the
microprocessor
socket
lever
arm
upward
to
its
maximum
vertical
position,
and
lift
the
microprocessor
up
and
out
of
the
server.
6.
To
install
a
microprocessor,
see
“Installing
an
additional
microprocessor”
on
page
57
Chapter
5.
Field
replaceable
units
77