IBM 887022X Maintenance Manual - Page 128

microprocessor

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6. If you are installing a new microprocessor, go to step 9; otherwise, continue: a. Verify that you have selected the correct microprocessor to be replaced. The LED next to the failing microprocessor will be lit. The LEDs can be turned on by pressing the Remind button on the SMP Module (for the location of this Remind button, see Figure 115 on page 178). Attention: The heat-conducting grease between the heat sink and the microprocessor might have formed a strong bond. Captive screws Heat sink 3 VRM 3 Microprocessor 3 Microprocessor locking lever Figure 66. Microprocessor installation b. Using a screwdriver, fully loosen one of the two captive mounting screws on the heat sink, and then fully loosen the other one until the bond between the heat sink and the microprocessor is broken; then, remove the heat sink. c. Rotate the locking lever on the microprocessor socket from its closed and locked position until it stops or clicks in the fully open position (approximately 135° angle), as shown. Lever open Figure 67. Microprocessor locking lever fully open 118 xSeries 445 Type 8870: Hardware Maintenance Manual and Troubleshooting Guide

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6.
If
you
are
installing
a
new
microprocessor,
go
to
step
9;
otherwise,
continue:
a.
Verify
that
you
have
selected
the
correct
microprocessor
to
be
replaced.
The
LED
next
to
the
failing
microprocessor
will
be
lit.
The
LEDs
can
be
turned
on
by
pressing
the
Remind
button
on
the
SMP
Module
(for
the
location
of
this
Remind
button,
see
Figure
115
on
page
178).
Attention:
The
heat-conducting
grease
between
the
heat
sink
and
the
microprocessor
might
have
formed
a
strong
bond.
b.
Using
a
screwdriver,
fully
loosen
one
of
the
two
captive
mounting
screws
on
the
heat
sink,
and
then
fully
loosen
the
other
one
until
the
bond
between
the
heat
sink
and
the
microprocessor
is
broken;
then,
remove
the
heat
sink.
c.
Rotate
the
locking
lever
on
the
microprocessor
socket
from
its
closed
and
locked
position
until
it
stops
or
clicks
in
the
fully
open
position
(approximately
135°
angle),
as
shown.
Microprocessor
locking lever
Captive screws
Heat sink 3
Microprocessor 3
VRM 3
Figure
66.
Microprocessor
installation
Lever open
Figure
67.
Microprocessor
locking
lever
fully
open
118
xSeries
445
Type
8870:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide