Troubleshooting The Power Supply

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.

71

Page 71
Image 71
Dell R220 owner manual Troubleshooting The Power Supply, Troubleshooting Cooling Problems, Troubleshooting Cooling Fans