Installing System Components 75Cooling FansYour system contains four dual-motor cooling fans. These provide coolingfor the processor, PCI cards, and memory modules. Your system also containsone single-motor fan to provide cooling for the power supplies.NOTE: Hot-swap removal or installation of the cooling fans is not supported.NOTE: In the event of a problem with a particular fan, the fan number is referencedby the system’s management software, allowing you to easily identify and replacethe proper fan by noting the fan numbers on the fan assembly.Removing a Cooling FanWARNING: The cooling fan can continue to spin for some time after the systemhas been powered down. Allow time for the fan to stop spinning before removingit from the system.WARNING: Do not attempt to operate the system without the cooling fans.CAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions thatcame with the product.1 Turn off the system, including any attached peripherals, and disconnectthe system from its electrical outlet.2 Open the system. See "Opening the System" on page 64.3 If applicable, remove the cooling shroud. See "Removing the CoolingShroud" on page 66.4 Disconnect the fan’s power cable from the system board. See Figure 3-10.NOTE: To remove fans 3 and 4, remove the storage controller card first.See "Removing the Storage Controller Card" on page 95.NOTE: To remove fan 5, remove the internal hard drive bay and carrier. See"Removing an Internal Hard Drive Bay" on page 71.5 Press the release tab while grasping the ends of the fan and lift the fanstraight up from the fan bracket. See Figure 3-10.
