Dell PowerVault 725N (Rackmount NAS Appliance) - Manual (Page 30)

Troubleshooting the Cooling Fans
Problem
l One or more of the system fans does not work.
Action
1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the system cover. See " Removing and Replacing the System Cover ."
3. Lift the fan from the chassis.
See " Removing and Replacing a Blower or Fan Assembly " in " Installing and Replacing System Components " for information about removing the fan.
4. Reseat the fan.
Ensure that the fan connector is firmly seated.
5. Replace the system cover.
6. Connect the system to an electrical outlet, and turn on the system.
If the problem is resolved, you are finished with this procedure.
If the problem persists, replace the fan. See " Removing and Replacing a Blower or Fan Assembly ."
7. If the replacement fan does not operate, one of the fan connectors is faulty.
See " Getting Help ."
Troubleshooting an Expansion Card
Problem
l Expansion card does not perform as expected.
Action
1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the system cover. See " Removing and Replacing the System Cover ."
3. Verify that the expansion card is firmly seated in its connector and the riser card is firmly seated in the riser-card connector. To locate these connectors,
see " Upgrading the Processor ."
4. Verify that the appropriate cables are firmly connected to the expansion-card connector.
5. Replace the system cover.
6. Connect the system to an electrical outlet and turn on the system.
If the problem is resolved, your are finished with this procedure.
If the problem persists, continue to step 7.
7. Turn off the system and disconnect the system from the electrical outlet.
8. Remove the system cover.
9. Remove the expansion card. See " Adding or Removing an Expansion Card ."
10. Connect a keyboard, mouse, and monitor to the NAS system.
11. Replace the system cover, connect the system to an electrical outlet, and turn on the system.
12. Reinstall the expansion card.
Troubleshooting System Memory
NOTE: When you turn on the system, press the power button for less than two seconds. If you press the power button for longer than 3 seconds,
the NAS system shuts down and automatically rebuilds its RAID arrays, which could impact system performance for several hours.
NOTE: When you turn on the system, press the power button for less than two seconds. If you press the power button for longer than 3 seconds,
the NAS system shuts down and automatically rebuilds its RAID arrays, which could impact system performance for several hours.