28 | Replacing the FanReplacing the FanWARNING: Before working inside your computer, read the safety informationthat shipped with your computer and follow the steps in "Before Working InsideYour Computer" on page 7. After working inside your computer, follow theinstructions in "After Working Inside Your Computer" on page 9.For more safety best practices, see the Regulatory Compliance home page atdell.com/regulatory_compliance.Procedure1 Align the screw holes on the fan with the screw holes on the palm-rest assembly.2 Replace the screws that secure the fan to the palm-rest assembly.3 Connect the fan cable to the I/O board connector.4 Route the power-adapter port cable through the routing guides on the fan.5 Connect the power-adapter port cable to the system board.6 Connect the I/O cable to the I/O board and the system board.Postrequisites1 Replace the battery. See "Replacing the Battery" on page 15.2 Connect the power-light board cable to the system board. See "Replacing thePower-Light Board" on page 13.3 Replace the base cover. See "Replacing the Base Cover" on page 11.