Thermal
grease
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.
To
replace
damaged
or
contaminated
thermal
grease
on
the
microprocessor
and
heat
sink,
complete
the
following
steps:
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:
Make
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.
Microprocessor
0.01 mL of
thermal grease
5.
Use
the
thermal-grease
syringe
to
place
16
uniformly
spaced
dots
of
0.01
mL
each
on
the
top
of
the
microprocessor.
Note:
0.01mL
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
144
IBM
System
x3950
Type
8878
and
System
x3950
E
Type
8879:
Problem
Determination
and
Service
Guide
