34 | Replacing the Heat SinkReplacing the Heat SinkWARNING: Before working inside your computer, read the safety informationthat shipped with your computer and follow the steps in "Before You Begin" onpage 9. After working inside your computer, follow the instructions in"After Working Inside Your Computer" on page 11. For more safety best practices,see the Regulatory Compliance home page at dell.com/regulatory_compliance.CAUTION: Incorrect alignment of the heat sink can cause damage to the systemboard and processor.ProcedureNOTE: The original thermal grease can be reused if the original processor and heatsink are reinstalled together. If either the processor or the heat sink is replaced,use the thermal grease provided in the kit to make sure that thermal conductivityis achieved.1 Clean the thermal grease from the bottom of the heat sink and reapply thethermal grease.2 Align the captive screws on the heat sink with the screw holes on the system board.3 In sequential order (indicated on the heat sink), tighten the captive screws thatsecure the heat sink to the system board.Postrequisites1 Replace the computer base. See "Replacing the Computer Base" on page 20.2 Replace the base cover. See "Replacing the Base Cover" on page 17.
