12.
Lift
the
heat
sink
and
fan
assembly
off
the
failing
system
board.
Place
the
heat
sink
on
its
side
so
that
the
thermal
grease
does
not
come
in
contact
with
anything.
Note:
You
might
have
to
gently
twist
the
heat
sink
to
free
it
from
the
microprocessor.
13.
Remove
the
retention
module
from
the
rear
of
the
failing
system
board
and
install
it
in
the
same
position
on
the
new
system
board.
14.
To
remove
the
microprocessor
2
from
the
system
board,
lift
the
small
handle
1
.
15.
Lift
the
microprocessor
straight
up
and
out
of
the
socket.
Notes:
a.
Your
microprocessor
and
socket
might
look
different
than
the
one
illustrated.
b.
Note
the
orientation
of
the
microprocessor
in
the
socket.
Look
for
the
small
triangle
on
one
corner
of
the
microprocessor.
This
is
important
when
reinstalling
the
microprocessor
on
the
new
system
board.
98
Hardware
Maintenance
Manual
Содержание 7812
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