Dell Inspiron 620 (Mid 2011) - Manual (Page 19)

8. Clean the thermal grease from the bottom of the heat-sink.
9. Apply the new thermal grease to the top of the processor.
10. Replace the processor fan and heat-sink assembly (see Replacing the Processor Fan and Heat-Sink Assembly ).
11. Replace the computer cover (see Replacing the Computer Cover ).
12. Connect your computer and devices to electrical outlets, and turn them on.
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1 alignment post 2 tab 3 processor cover
4 release lever 5 processor 6 processor cover notch
CAUTION: Ensure that you apply new thermal grease. New thermal grease is critical for ensuring adequate thermal bonding, which is a
requirement for optimal processor operation.
CAUTION: Ensure that the processor fan and heat-sink assembly is correctly seated and secure.