46 | Replacing the FanReplacing the FanWARNING: Before working inside your computer, read the safety informationthat shipped with your computer and follow the steps in "Before You Begin" onpage 7. After working inside your computer, follow the instructions in "AfterWorking Inside Your Computer" on page 9. For additional safety bestpractices information, see the Regulatory Compliance Homepage atdell.com/regulatory_compliance.Procedure1 Align the screw holes on the fan with the screw holes on the system board.2 Replace the screw that secures the fan to the system board.3 Connect the fan cable to the connector on the system-board.Postrequisites1 Replace the system board. See "Replacing the System Board" on page 37.2 Replace the wireless mini-card. See "Replacing the Wireless Mini-Card" on page 30.3 Replace the palm-rest. See "Replacing the Palm-Rest" on page 27.4 Replace the keyboard. See "Replacing the Keyboard" on page 23.5 Replace the optical-drive assembly. See "Replacing the Optical-Drive Assembly" onpage 17.6 Replace the hard-drive assembly. See "Replacing the Hard-Drive Assembly" onpage 20.7 Follow the instructions from step 3 and step 4 in "Replacing the Memory Module(s)"on page 14.8 Replace the battery. See "Replacing the Battery" on page 11.