Owner manual

Troubleshooting Your System | 317
 Ambient temperature is too high.
 External airflow is obstructed.
 Cables inside the system obstruct airflow.
 An individual cooling fan is removed or has failed. See
“Troubleshooting a Fan” on page 317.
Troubleshooting a Fan
1 Locate the faulty fan indicated by the diagnostic software.
2 Turn off the system and all attached peripherals.
3 Open the system. See “Opening the System” on page 151.
4 Reseat the fan’s power cable.
5 Restart the system.
If the fan functions properly, close the system. See “Closing the System”
on page 152.
6 If the fan does not function, turn off the system and install a new fan.
See “Cooling Fans” on page 154.
7 Restart the system.
If the problem is resolved, close the system. See “Closing the System”
on page 152.
If the replacement fan does not operate, see “Getting Help” on page
343.
CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow the safety instructions that came with
the product.