Replacing the heat-sink assembly — for
computer with discrete graphics card
NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow
the steps in Before working inside your computer. After working inside your computer, follow the instructions in After
working inside your computer. For more safety best practices, see the Regulatory Compliance home page at
www.dell.com/regulatory_compliance.
CAUTION: Incorrect alignment of the heat sink can damage the system board and processor.
NOTE: If either the system board or the fan and heat-sink assembly is replaced, use the thermal pad/paste provided in
the kit to ensure that thermal conductivity is achieved.
Topics:
• Procedure
• Post-requisites
Procedure
1. Align the screw holes on the heat-sink assembly with the screw holes on the system board.
2. In sequential order (indicated on the heat-sink assembly), tighten the four captive screws that secure the heat-sink assembly to the
system board.
3. In sequential order (as indicated on the heat-sink assembly), replace the three screws (M2x3) that secure the heat-sink assembly to
the system board.
4. Replace the two screws (M2x3) that secure the heat-sink assembly to the system board.
5. Connect the fan cable to the system board.
6. Route the I/O-board cable through the routing guides on the fan.
7. Connect the I/O-board cable to the system board.
Post-requisites
1. Replace the battery.
2. Replace the base cover.
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Replacing the heat-sink assembly — for computer with discrete graphics card 27
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