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9.
Reinstall
the
PCI
riser
card
and
any
adapters.
10.
Lower
the
drive
bay
assembly
into
the
normal
position.
11.
To
complete
the
installation,
go
to
“Closing
the
cover
and
connecting
cables”
on
page
159.
Removing
and
replacing
the
microprocessor
Important
To
allow
the
thermal
interface
between
the
microprocessor
and
the
heat
sink
time
to
cool
down,
turn
off
the
computer
at
least
one
hour
before
removing
the
microprocessor.
Note:
This
procedure
is
also
used
when
replacing
a
failing
system
board.
When
you
receive
a
new
microprocessor,
you
will
also
receive
a
new
heat
sink
and
vacuum
pen
for
handling
the
microprocessor.
You
must
install
the
new
heat
sink
when
replacing
the
microprocessor.
If
you
use
the
old
heat
sink
with
the
new
microprocessor,
the
computer
might
over
heat.
1.
Open
the
cover.
See
“Opening
the
cover”
on
page
138.
Chapter
10.
Replacing
FRUs
(Types
8098,
8171,
8172,
8173,
8424,
and
8425)
147
Summary of Contents for 8141
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