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10.
Place
the
new
the
system
board
into
the
chassis
making
sure
to
engage
the
tabs
into
the
plate
on
the
bottom
of
the
system
board.
Slide
the
system
board
toward
the
rear
until
the
screw-holes
are
aligned
and
install
the
screws
that
secure
the
system
board
to
the
chassis.
11.
Install
any
PCI
adapters
that
were
removed.
See
“Removing
and
replacing
a
PCI
adapter”
on
page
120.
12.
Reconnect
all
cables
that
were
disconnected
from
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
118.
13.
To
complete
the
installation,
go
to
“Replacing
the
cover
and
connecting
the
cables”
on
page
135.
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.
Remove
the
cover.
See
“Removing
the
cover”
on
page
116.
126
Hardware
Maintenance
Manual
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