Replacing the heat-sinkassemblyWARNING: Before working inside your computer, read the safetyinformation that shipped with your computer and follow the steps inBefore working inside your computer. After working inside yourcomputer, follow the instructions in After working inside yourcomputer. For more safety best practices, see the RegulatoryCompliance home page at www.dell.com/regulatory_compliance.CAUTION: Incorrect alignment of the heat sink can damage thesystem board and processor.NOTE: The original thermal grease can be reused if the original systemboard and fan are reinstalled together. If either the system board or thefan is replaced, use the thermal pad provided in the kit to ensure thatthermal conductivity is achieved.Procedure1 Place the heat-sink assembly on the system board.2 Align the screw holes on the heat-sink assembly with the screw holes onthe system board.3 Replace the screws that secure the heat-sink assembly to the systemboard.4 In sequential order (indicated on the heat-sink assembly), tighten thecaptive screws that secure the heat-sink assembly to the system board.5 Connect the fan cable to the system board.Post-requisites1 Replace the system-board assembly.2 Replace the wireless card.3 Replace the memory modules.4 Replace the battery.5 Replace the hard drive.6 Replace the I/O board.7 Replace the base cover.64
