CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
Removing The Cooling-Fan Assembly:
Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet and peripherals.
Open the system.
Unlock the cooling-fan assembly from the chassis by rotating the blue release lever upward.
Lift the cooling-fan assembly out of the chassis.
Installing The Cooling-Fan Assembly:
Align the cooling-fan assembly slots with the guide pins on the chassis.
Slide the cooling-fan assembly into the chassis.
Lock the cooling-fan assembly into the chassis by rotating the blue release levers downward until firmly seated.
Close the system.
Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.