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Troubleshooting Redundant Power Supplies
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. Reseat the power supply by removing and reinstalling it.
NOTE: After installing a power supply, allow several seconds for the system to recognize the power supply
and to determine if it is working properly.
2. If the problem persists, see Getting Help.
Troubleshooting 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, cooling shroud, EMI filler panel, memory-module blank, or back-filler bracket is removed.
• Ambient temperature is too high.
• External airflow is obstructed.
• A cooling fan is removed or has failed.
• The expansion card installation guidelines have not been followed.
Troubleshooting Cooling Fans
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.
2. Reseat the fan or the fan's power cable.
3. If the fan functions properly, close the system.
If the problem persists, see Getting Help.
Troubleshooting System Memory
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. If the system is operational, run the appropriate diagnostic test. See Using System Diagnostics for available
diagnostic tests.
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