Dell PowerEdge 4300 Installation And Troubleshooting Manual page 106

7-18 Dell PowerEdge 4300 Systems Installation and Troubleshooting Guide
1. Remove the computer cover.
See "Removing the Computer Cover" found earlier in this chapter.
2. Check the fan cable connections as follows:
For the two-fan assembly for the system board , check the connections
between the fan connectors and the extension cables extending from the
system board.
For the three-fan assembly for the hard-disk drives , remove the assembly
and reinstall it, making sure that the electrical connector is fully seated.
Do the fans operate properly?
Yes. You have fixed the problem.
No. Replace the defective fan or fan assembly as described in the following
subsections.
Follow these steps to replace a defective cooling fan in the two-fan assembly for the
system board.
NOTE: You can perform the following procedure with the system turned on or off.
1. Remove the computer cover.
See "Removing the Computer Cover" found earlier in this chapter.
2. Identify the defective cooling fan in the assembly.
Before removing the fan, note the direction of the airflow.
3. Disconnect the cooling fan's power cable from the FAN1 or FAN2 connector on
the system board.
4. Remove the faulty cooling fan from the fan assembly by releasing the two fan
retention tabs on the assembly (see Figure 7-10).