Replacing A Redundant Cooling Fan - Dell PowerEdge 4200 Installation And Troubleshooting Manual

Replacing a Redundant Cooling Fan

Follow these steps to replace a defective redundant cool-
ing 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
to service them with the computer power on.
1. Remove the left computer cover.
See "Removing the Computer Covers" found 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
FANn connector on the system board.
4. Depress the catch on the fan carrier (see Fig-
ure 7-8) and remove the fan carrier from the
chassis.
7-10 Dell PowerEdge 4200 Systems Installation and Troubleshooting Guide
fan carrier
fan
Figure 7-8. 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 7-8).
6. Insert the replacement cooling fan into the car-
rier, 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 valences in the chassis, and then raise
the fan carrier into position until the catch on the fan
carrier snaps into place in the computer chassis.
8. Connect the cooling-fan power cable to the FANn
connector on the system board.
The fan should begin running.
9. Replace the left computer cover.
catch
retention
tabs (2)