124 Troubleshooting Your SystemTroubleshooting a Storage ControllerNOTE: When troubleshooting a SAS or SAS RAID controller, also see thedocumentation for your operating system and the controller.1 Enter the System Setup program and ensure that the SAS controller isenabled. See "Using the System Setup Program" on page 35.2 Restart the system and press the applicable key sequence to enter theconfiguration utility program.• for a SAS controller• for a RAID controllerSee the controller's documentation for information about configurationsettings.3 Check the configuration settings, make any necessary corrections,and restart the system.CAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.4 Turn off the system and attached peripherals, and disconnect the systemfrom its electrical outlet.5 Remove the system-board assembly. See "Removing a System-BoardAssembly" on page 61.6 Ensure that the controller card is firmly seated into the system boardconnector. See "Installing the Expansion Card" on page 71.7 If you have a battery-cached RAID controller, ensure that the RAIDbattery is properly connected and, if applicable, the memory module onthe RAID card is properly seated.
