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70 | Installing System Components
Heat Sinks
Removing the Heat Sink
CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support 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 with
the product.
1 Turn off the system, including any attached peripherals, and
disconnect the system from its electrical outlet.
2 Remove the system-board assembly. See “Removing a System-Board
Assembly" on page 68.
WARNING: The heat sink may be hot to touch for some time after the system has
been powered down. Allow the heat sink to cool before removing it.
CAUTION: Never remove the heat sink from a processor unless you intend to
remove the processor. The heat sink is necessary to maintain proper thermal
conditions.
3 Using a Phillips screwdriver, loosen one of the heat-sink retention
screws. See Figure 3-7.
Wait for 30 seconds for the heat sink to loosen from the processor.
4 Remove the other three heat-sink retention screws.
5 Gently lift the heat sink off the processor and set the heat sink aside
with thermal grease side facing up.