Replacing a Cooling Fan
Follow these steps to replace a defective cooling fan.
WARNING: Only trained service technicians should perform this procedure. Do not remove the left computer cover with the power on unless you are replacing a cooling fan. (Never remove the right computer cover with the com- puter power on. There are high voltages in this area that can cause bodily harm.)
Do not touch or attempt to service any compo- nents other than the cooling fan. Other components could be damaged if you attempt
fan carrier
fan
catch
to service them with the computer power on.
CAUTION: To ensure correct installation and safety, use cooling fans supplied by Dell.
1.Remove the left computer cover.
See “Removing the Computer Covers” earlier in this chapter.
CAUTION: See “Protecting Against Electro- static Discharge” in the safety instructions at the front of this guide.
2.Identify the defective cooling fan.
3.Disconnect the cooling fan’s power cable from the applicable FAN connector on the system board.
4.Depress the catch on the fan carrier (see Fig- ure
retention tabs (2)
Figure 7-9. Replacing a Cooling Fan
5.Remove the cooling fan from the fan carrier by releasing the two fan retention tabs inside the car- rier (see Figure
6.Insert the replacement cooling fan in the carrier, and snap the two fan retention tabs back into position.
Orient the fan so that the power cable is at the upper- right corner of the carrier.
7.Reinstall the fan carrier in the computer.
Insert the two tabs along the lower edge of the fan carrier into the lances in the chassis; then raise the fan carrier into position until the catch on the fan car- rier snaps into place in the computer chassis.
8.Connect the
The fan should begin running.
9.Replace the left computer cover.
Checking Inside the Computer |