Troubleshooting Your System 155CAUTION: Only trained service technicians are authorized to remove the systemcover and access any of the components inside the system. Before performing anyprocedure, see your Product Information Guide for complete information aboutsafety precautions, working inside the computer and protecting againstelectrostatic discharge.9 Open the system. See "Opening and Closing the System" on page 70.10 Reseat the SAS or SCSI controller card in the expansion card slot.11 Close the system. See "Opening and Closing the System" on page 70.12 Reconnect the system to the electrical outlet, and turn on the system,including attached peripherals.13 If the problem is not resolved, see the documentation for the tape drive foradditional troubleshooting instructions.14 If you cannot resolve the problem, see "Getting Help" on page 175 forinformation on obtaining technical assistance.Troubleshooting a Hard DriveProblem• Device driver error.• One or more hard drives not recognized by the system.ActionCAUTION: Only trained service technicians are authorized to remove the systemcover and access any of the components inside the system. Before performing anyprocedure, see your Product Information Guide for complete information aboutsafety precautions, working inside the computer and protecting againstelectrostatic discharge.NOTICE: This troubleshooting procedure can destroy data stored on the harddrive. Before you proceed, back up all files on the hard drive.1 Run the appropriate online diagnostics test. See "Using ServerAdministrator Diagnostics" on page 161.Depending on the results of the diagnostics test, proceed as neededthrough the following steps.2 Remove the bezel. See "Removing the Front Bezel" on page 69.
