5Troubleshooting The EnclosureNOTE: For troubleshooting information on the blades in your enclosure, see the blade documentation atsupport.dell.com/manuals.Safety First—For You and Your SystemCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.Responding to a Systems Management Alert MessageThe CMC management applications monitor critical system voltages and temperatures, and the cooling fans in thesystem. For information about the CMC alert messages, see the CMC User's Guide at support.dell.com/manuals.Troubleshooting A Damaged Enclosure1. Ensure that the following components are properly installed and connected:– CMC module– iKVM module– I/O modules– Power supply modules– Fan modules– Blades– Sleeves (with quarter-height blades)2. Ensure that all cables are properly connected.3. Ensure that all components are properly installed and free from damage.4. Run the online diagnostics.If the tests fail, see Getting Help.Troubleshooting Enclosure ComponentsThe following procedures describe how to troubleshoot the following components:• Power supply modules• Fan modules• CMC module• Network switch module93