Troubleshooting 185Troubleshooting the Power SledCAUTION: Remove and replace one PSU module at a time. Leave a failed PSUmodule installed in the power sled until you are ready to replace it. Operating thesystem with a power sled removed for extended periods of time can cause thesystem to overheat.NOTE: The 1400 W power supply module in the power sled require a 200-240 Vpower source to operate.1 Locate the power sled to be removed or the power sled that contains thefailed PSU module. The PSU module’s status indicator will either light upgreen or amber. If the PSU module is faulty the status indicator lights upamber.2 Replace the faulty PSU module in the power sled. See the PowerEdgeC8000 Systems Hardware Owner’s Manual for more information.NOTE: After installing a power sled with a new PSU module, allow several secondsfor the system to recognize the power supply and to determine if it is workingproperly. The status indicator turns green to signify that the module is functioningproperly.If none of the PSU modules show a fault LED and the sleds do not poweron, log into the BMC web interface and check for status messages. SeeUsing the Baseboard Management Controller Guide for more information.If all troubleshooting fails, see "Getting Help" on page 203.Troubleshooting System MemoryCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.NOTE: Invalid memory configurations can cause your system to halt at startupwithout video output. See "System Memory" on page 143 and verify that yourmemory configuration complies with all applicable guidelines.1 If the system is not operational, turn off the sled and attached peripherals.
