Dell Vostro 220 Service Manual page 128

NOTICE:
socket, and do not use excessive force when you press the processor into the
socket.
5 Press the processor lightly into the socket until it is fully seated.
6 Lower the processor cover.
NOTE:
the retention latch when the release lever is rotated and secured underneath the
retention hook.
7 Pivot the release lever back towards the socket, and secure it underneath
the retention hook.
8 Clean the thermal grease from the bottom of the heat sink.
NOTICE:
for ensuring adequate thermal bonding, which is a requirement for optimal
processor operation.
9 Apply new thermal grease to the top of the processor.
10 Replace the processor heat sink/fan assembly (see "Replacing the Processor
Heat Sink/Fan Assembly" on page 101).
NOTICE:
11 Follow the procedure in "After Working on Your Computer" on page 45.
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To avoid damage, ensure that the processor aligns properly with the
Ensure that the tab on the cover is positioned such that it will be underneath
Ensure that you apply new thermal grease. New thermal grease is critical
Ensure that the heat sink/fan assembly is correctly seated and secure.
Processor
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