Service Manual

Replacing the I/O board
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.
Procedure
1. Align the ports on the I/O board with the slots on the palm-rest assembly.
2. Connect the I/O-board cable to the I/O board and close the latch to secure the cable.
3. Replace the two screws (M2x2.5) that secure the I/O board to the palm-rest assembly.
Post-requisites
1. Replace the heat sink.
2. Replace the processor fan.
3. Replace the graphics-card fan.
4. Replace the base cover.
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68 Replacing the I/O board