Replacing
the
microprocessor
Attention
Do
not
open
your
computer
or
attempt
any
repair
before
reading
and
understanding
the
“Important
safety
information”
in
the
ThinkCentre
Safety
and
Warranty
Guide
that
came
with
your
computer.
To
obtain
a
copy
of
the
ThinkCentre
Safety
and
Warranty
Guide
,
go
to:
http://www.lenovo.com/support
CAUTION:
The
heat
sink
and
microprocessor
might
be
very
hot.
Turn
off
the
computer
and
wait
three
to
five
minutes
to
let
the
computer
cool
before
opening
the
computer
cover.
This
section
provides
instructions
on
how
to
replace
the
microprocessor.
To
replace
the
microprocessor:
1.
Open
the
computer
cover.
See
“Removing
the
computer
cover”
on
page
86.
2.
Remove
any
parts
or
cables
that
may
prevent
your
access
to
the
system
board.
3.
Remove
the
heat
sink
and
fan
assembly.
See
“Replacing
the
heat
sink
and
fan
assembly”
on
page
97.
4.
Place
the
heat
sink
and
fan
assembly
on
its
side
so
that
the
thermal
grease
does
not
come
in
contact
with
anything.
5.
Lift
the
small
handle
3
and
open
the
retainer
1
to
access
the
microprocessor
2
.
Chapter
8.
Replacing
FRUs
(Type
7848)
99
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