Manual

support.dell.com Checking Inside the System 6-11
6. Close the power supply latch.
NOTE: The power supply will not function until the latch is engaged.
7. Close the system doors.
8. Connect the AC power cable to the new power supply and route the cable
through the strain-relief clips on the power supply handle.
Troubleshooting a Cooling Fan
Three cooling fans are installed in the system chassis. (Fan 1 is the outermost fan in
the fan assembly.) If you observe that one of the cooling fans is not operating or if
clicking on the Dell PowerVault 735N NAS Manager Status Indicator shows a fan-
related error message, perform the following steps to troubleshoot the problem:
1. Turn off the system, including any attached peripherals, and disconnect the sys-
tem from its electrical outlet.
2. Open the system doors.
See “Opening the System Doors” found earlier in this chapter.
3. Unplug the fan power wiring harness from the interposer board by pressing the
release tab on the power cable connector.
4. Remove the retention pin from the chassis and lift the fan assembly out of the
system (see Figure 6-6).
Figure 6-6. Removing the Cooling Fan Assembly
cooling fan assembly
fan assembly power connector
on interposer board
retention pin
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