Lenovo ThinkCentre A50 Hardware Maintenance Manual - Page 106

Removing, replacing, microprocessor

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20. Go to "Completing the FRU replacement." on page 104. Removing and replacing the microprocessor 1. Open the cover. See "Opening the cover" on page 90. 2. Loosen the two captured screws that secure the heat sink clamps 2 . Pivot the clamps to the side to allow the heat sink 1 to be removed. 3. Remove the heat sink from the microprocessor by gently twisting the heat sink to break the seal formed by the thermal grease and lifting it straight up. 4. Place the heat sink on a clean work surface. 5. Release the microprocessor 1 from the system board socket by pulling outward and lifting the small handle 2 on the microprocessor socket to its maximum vertical position. Carefully lift the microprocessor off the socket. 6. Make sure that the microprocessor socket handle is fully in the vertical position. Otherwise the microprocessor pins might be damaged when reinstalling the new microprocessor. 100 Hardware Maintenance Manual

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20.
Go
to
“Completing
the
FRU
replacement.”
on
page
104.
Removing
and
replacing
the
microprocessor
1.
Open
the
cover.
See
“Opening
the
cover”
on
page
90.
2.
Loosen
the
two
captured
screws
that
secure
the
heat
sink
clamps
±2²
.
Pivot
the
clamps
to
the
side
to
allow
the
heat
sink
±1²
to
be
removed.
3.
Remove
the
heat
sink
from
the
microprocessor
by
gently
twisting
the
heat
sink
to
break
the
seal
formed
by
the
thermal
grease
and
lifting
it
straight
up.
4.
Place
the
heat
sink
on
a
clean
work
surface.
5.
Release
the
microprocessor
±1²
from
the
system
board
socket
by
pulling
outward
and
lifting
the
small
handle
±2²
on
the
microprocessor
socket
to
its
maximum
vertical
position.
Carefully
lift
the
microprocessor
off
the
socket.
6.
Make
sure
that
the
microprocessor
socket
handle
is
fully
in
the
vertical
position.
Otherwise
the
microprocessor
pins
might
be
damaged
when
reinstalling
the
new
microprocessor.
100
Hardware
Maintenance
Manual