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Chapter 3: Maintenance and Component Installation
Figure 3-13. Installing a Fan
System Fan Failure
Fan speed is controlled by IPMI depending on the system temperature. If a fan fails, the
remaining fans will ramp up to full speed. The system can continue to run with a failed fan.
Replace any failed fan at your earliest convenience with the same model. Failed fans can be
identified through the BIOS. The fan numbers are printed on the floor of the chassis.
Replacing a System Fan
If you do not use the BIOS to determine which fan has failed, open the top cover of the chassis
while the system is running to locate the position of the failed fan. Never run the server for
an extended period of time with the top cover open.
1. Remove power from the system as described in Section 3.1 and take off the cover as
described in Section 3.2.
2. Remove the failed fan's wiring from the motherboard.
3. Remove the four pins securing the fan to the fan tray.
4. Lift the failed fan from the fan tray and out of the chassis.
5. Place the new fan into the vacant space in the fan tray, while making sure the arrows on
the top of the fan (indicating air direction) point in the same direction as the arrows on
the other fans in the same fan tray.
6. Reconnect the fan wires to the exact same chassis fan headers as the previous fan.
7. Reconnect the AC power cord, power up the system and check that the fan is working
properly before replacing the chassis cover.
