Lenovo NetVista A22p Hardware Maintenance Manual (HMM) for NetVista 2292, 6343 - Page 35

Replacing, microprocessor

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3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. 4. Press the buttons on the sides of the computer and pivot the rear end of the cover up toward the front of the computer. Replacing the microprocessor 1. Shut down your operating system and turn off the computer. 2. Remove the cover. See "Removing the cover" on page 28. 3. Remove the air baffle covering the microprocessor on the system board by squeezing the plastic tabs that secure the air baffle to the chassis. 4. Loosen the two captured screws that hold the fan sink in place and pivot them off the fan sink notches. 5. Gently twist the fan sink to break the thermal grease seal and lift the fan sink off the microprocessor. Note: If the thermal grease seal cannot be broken, you can turn on the computer for a few mimutes to heat the microprocessor and loosen the thermal grease. 6. Pull out and lift up the processor socket lever to its maximum vertical position to release the microprocessor module. 7. Gently lift the microprocessor off the microprocessor socket. Notes: a. Note the position of the beveled corner on the microprocessor. When installing the new microprocessor, the beveled corner on the microprocessor must be properly oriented with the beveled corner in the socket. b. When installing the new microprocessor, make sure to reinstall the fan sink to insure proper cooling. 8. Reverse this procedure to install the new microprocessor. 9. Go to "Completing the FRU replacement." on page 45 when the microprocessor has been installed. Chapter 6. Replacing FRUs 29

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3.
Disconnect
all
cables
attached
to
the
computer.
This
includes
power
cords,
input/output
(I/O)
cables,
and
any
other
cables
that
are
connected
to
the
computer.
4.
Press
the
buttons
on
the
sides
of
the
computer
and
pivot
the
rear
end
of
the
cover
up
toward
the
front
of
the
computer.
Replacing
the
microprocessor
1.
Shut
down
your
operating
system
and
turn
off
the
computer.
2.
Remove
the
cover.
See
“Removing
the
cover”
on
page
28.
3.
Remove
the
air
baffle
covering
the
microprocessor
on
the
system
board
by
squeezing
the
plastic
tabs
that
secure
the
air
baffle
to
the
chassis.
4.
Loosen
the
two
captured
screws
that
hold
the
fan
sink
in
place
and
pivot
them
off
the
fan
sink
notches.
5.
Gently
twist
the
fan
sink
to
break
the
thermal
grease
seal
and
lift
the
fan
sink
off
the
microprocessor.
Note:
If
the
thermal
grease
seal
cannot
be
broken,
you
can
turn
on
the
computer
for
a
few
mimutes
to
heat
the
microprocessor
and
loosen
the
thermal
grease.
6.
Pull
out
and
lift
up
the
processor
socket
lever
to
its
maximum
vertical
position
to
release
the
microprocessor
module.
7.
Gently
lift
the
microprocessor
off
the
microprocessor
socket.
Notes:
a.
Note
the
position
of
the
beveled
corner
on
the
microprocessor.
When
installing
the
new
microprocessor,
the
beveled
corner
on
the
microprocessor
must
be
properly
oriented
with
the
beveled
corner
in
the
socket.
b.
When
installing
the
new
microprocessor,
make
sure
to
reinstall
the
fan
sink
to
insure
proper
cooling.
8.
Reverse
this
procedure
to
install
the
new
microprocessor.
9.
Go
to
“Completing
the
FRU
replacement.”
on
page
45
when
the
microprocessor
has
been
installed.
Chapter
6.
Replacing
FRUs
29