62 Installing System Components
Heat Sinks CAUTION: Many repairs may only be done by a certified service technician.
Youshould only perform troubleshooting and simple repairs as authorized in
yourproduct documentation, or as directed by the online or telephone service
andsupport team. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow the safety instructions that came
withthe product.
Removing the Heat Sink
1
Turn off the system, including any attached peripherals, and disconnect
the system from its electrical outlet.
2
Open the system. See "Opening the System" on page 58.
3
Remove the cooling shroud. See "Removing the Cooling Shroud" on
page60.
4
If required, remove the expansion-card riser assembly. See "Removing the
Expansion-Card Riser" on page74.
WARNING: The heat sink is hot to touch for some time after the system has been
powered down. Allow the heat sink to cool before handling it.
CAUTION: Never remove the heat sink from a processor unless you intend
toremove the processor. The heat sink is necessary to maintain proper
thermalconditions.
5
Using a #2 Phillips screwdriver, loosen one of the heat-sink captive screws.
See Figure3-8.
Wait 30 seconds for the heat sink to loosen from the processor.
6
Loosen the screw that is diagonally opposite to the screw that you have
already loosened. See Figure3-8.
7
Repeat step 5 till you have loosened the remaining screws.
8
Gently lift the heat sink off the processor and set the heat sink aside with
the thermal grease side facing up.
book.book Page 62 Monday, April 12, 2010 3:38 PM