Replacing the chassis fan
WARNING: 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 screw holes on the chassis fan with the screw holes on the middle 
frame.
2  Replace the screws (M3X4) that secure the chassis fan to the middle frame.
3  Connect the chassis fan cable to the system board.
4  Connect the power-supply unit cable to its connector on the system board.
5  Route the power-supply unit cable through the routing guides on the chassis 
fan.
Post-requisites
1  Replace the system-board shield.
2  Replace the stand.
3  Replace the back cover.
4  Replace the USB dongle-bay cover.
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