8.
Place
the
failing
system
board
next
to
the
new
system
board
on
a
clean,
flat
surface.
9.
Remove
all
memory
modules
from
the
failing
system
board
and
install
them
in
the
same
connectors
on
the
new
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
85.
10.
Remove
the
heat
sink
from
the
failing
system
board
by
pivoting
the
lever
1
until
it
is
fully
in
the
vertical
position.
Carefully
lift
the
heat
sink
off
of
the
failing
system
board.
Note:
Place
the
heat
sink
on
its
side
on
a
clean,
flat
surface
so
the
thermal
grease
on
the
bottom
of
the
heat
sink
does
not
touch
the
surface
and
become
contaminated.
11.
To
remove
the
microprocessor
from
the
failing
system
board,
release
the
lever
1
securing
the
microprocessor
3
then
pivot
the
microprocessor
retainer
2
until
it
is
fully
open.
Chapter
8.
Replacing
FRUs
91
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