Dell R820, E21S001 owner manual Heat sink

4.If applicable, remove the cooling shroud or the processor expansion module.

NOTE: To remove processor 3 or processor 4, ensure that you lift the release lever on the processor expansion module before proceeding.

WARNING: The heat sink and processor are hot to the touch for some time after the system has been powered down. Allow the heat sink and processor to cool before handling them.

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.

5.Using a #2 Phillips screwdriver, loosen one of the heat-sink retention socket. Wait 30 seconds for the heat sink to loosen from the processor.

6.Loosen the second heat-sink retention socket.

7.Lift the heat sink away from the processor and set the heat sink aside.

Figure 47. Removing and Installing the Processor Heat Sink
1.	heat sink	2.	retention sockets (2)
3.	retention screws (2)	4.	processor

CAUTION: The processor is held in its socket under strong pressure. Be aware that the release lever can spring up suddenly if not firmly grasped.

8.Position your thumb firmly over the processor socket-release lever near the unlock icon and release the lever from the locked position by pushing down and out from under the tab.

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