IBM HS40 Hardware Maintenance Manual - Page 82

Thermal, grease, Processor, board

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Thermal grease This section contains information about removing and replacing the thermal grease between the heat sink and the microprocessor. The thermal grease must be replaced whenever the heat sink has been removed from the top of the microprocessor and is going to be reused or when debris is found in the grease. Note: v Read "Installation guidelines" on page 33. v Read the safety notices beginning on page 109. v Read "Handling electrostatic discharge-sensitive devices" on page 112. Complete the following steps to replace damaged or contaminated thermal grease on the microprocessor and heat sink: 1. Place the heat sink on a clean work surface. 2. Remove the cleaning pad from its package, and unfold it completely. 3. Use the cleaning pad to wipe the thermal grease from the bottom of the heat sink. Note: Be sure that all of the thermal grease is removed. 4. Use a clean area of the cleaning pad to wipe the thermal grease from the microprocessor; then, dispose of the cleaning pad after all of the thermal grease is removed. 5. Use the thermal grease syringe to place 16 uniformly spaced dots of 0.01 mL each on the top of the microprocessor. Microprocessor 0.01 mL of thermal grease Note: 0.01 mL is one tick mark on the syringe. If the grease is properly applied, approximately half (0.22 mL) of the grease will remain in the syringe. 6. Install the heat sink onto the microprocessor as described in "Installing an additional microprocessor" on page 46. Processor board When replacing the processor board, you must either update the system with the latest firmware or restore the pre-existing firmware that the customer provides on a diskette or CD image. Note: v Read "Installation guidelines" on page 33. v Read the safety notices beginning on page 109. 72 BladeCenter HS40 Type 8839: Hardware Maintenance Manual and Troubleshooting Guide

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Thermal
grease
This
section
contains
information
about
removing
and
replacing
the
thermal
grease
between
the
heat
sink
and
the
microprocessor.
The
thermal
grease
must
be
replaced
whenever
the
heat
sink
has
been
removed
from
the
top
of
the
microprocessor
and
is
going
to
be
reused
or
when
debris
is
found
in
the
grease.
Note:
v
Read
“Installation
guidelines”
on
page
33.
v
Read
the
safety
notices
beginning
on
page
109.
v
Read
“Handling
electrostatic
discharge-sensitive
devices”
on
page
112.
Complete
the
following
steps
to
replace
damaged
or
contaminated
thermal
grease
on
the
microprocessor
and
heat
sink:
1.
Place
the
heat
sink
on
a
clean
work
surface.
2.
Remove
the
cleaning
pad
from
its
package,
and
unfold
it
completely.
3.
Use
the
cleaning
pad
to
wipe
the
thermal
grease
from
the
bottom
of
the
heat
sink.
Note:
Be
sure
that
all
of
the
thermal
grease
is
removed.
4.
Use
a
clean
area
of
the
cleaning
pad
to
wipe
the
thermal
grease
from
the
microprocessor;
then,
dispose
of
the
cleaning
pad
after
all
of
the
thermal
grease
is
removed.
5.
Use
the
thermal
grease
syringe
to
place
16
uniformly
spaced
dots
of
0.01
mL
each
on
the
top
of
the
microprocessor.
Microprocessor
0.01 mL of
thermal grease
Note:
0.01
mL
is
one
tick
mark
on
the
syringe.
If
the
grease
is
properly
applied,
approximately
half
(0.22
mL)
of
the
grease
will
remain
in
the
syringe.
6.
Install
the
heat
sink
onto
the
microprocessor
as
described
in
“Installing
an
additional
microprocessor”
on
page
46.
Processor
board
When
replacing
the
processor
board,
you
must
either
update
the
system
with
the
latest
firmware
or
restore
the
pre-existing
firmware
that
the
customer
provides
on
a
diskette
or
CD
image.
Note:
v
Read
“Installation
guidelines”
on
page
33.
v
Read
the
safety
notices
beginning
on
page
109.
72
BladeCenter
HS40
Type
8839:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide