www.dell.com/regulatory_compliance
Prerequisites
1. Remove the optical drive (applicable only to computers shipped with optical drive).
2. Remove the base cover.
Procedure
1. In reverse sequential order (4->3->2->1), loosen the four captive screws that secure the heat sink to the system board.
2. Lift the heat sink off the system board.
www.dell.com/regulatory_compliance
Procedure
1. Place the heat sink on the system board and align the screw holes on the heat sink with the screw holes on the system board.
2. In sequential order (1->2->3->4) as indicated on the heat sink, tighten the captive screws to secure the heat sink to the system board.
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