Dell PowerEdge R910 - Manual (Page 180)

180 Troubleshooting Your System
Troubleshooting System Cooling Problems
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.
Ensure that none of the following conditions exist:
• System cover, drive blank, memory-module blank, power-supply blank, or
back filler bracket is removed.
• Ambient temperature is too high. See your Getting Started Guide for your
system’s operating temperature requirements.
• 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 180.
• The expansion card installation guidelines have not been followed. See
"Expansion Card Installation Guidelines" on page 123.
Troubleshooting a Fan
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.
1 Open the system. See "Opening the System" on page 89.
CAUTION: The cooling fans are hot-swappable. To maintain proper cooling while
the system is on, only replace one fan at a time.
2 Locate the faulty fan indicated by the LCD panel or the diagnostic
software.
book.book Page 180 Tuesday, December 4, 2012 3:11 PM