160 | Troubleshooting Your SystemTroubleshooting a Storage ControllerNOTE: When troubleshooting a SAS RAID controller, also see the documentationfor 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 26.2 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, andrestart the system.CAUTION: 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 notcovered by your warranty. Read and follow the safety instructions that came withthe product.4 Turn off the system and attached peripherals, and disconnect thesystem from its electrical outlet.5 Remove the system-board assembly. See "Removing a System-BoardAssembly" on page 87.6 Ensure that the controller card is firmly seated into the system boardconnector. See "Installing the Expansion Card" on page 97.7 If you have a battery-cached SAS RAID controller, ensure that theRAID battery is properly connected and, if applicable, the memorymodule on the RAID card is properly seated.8 Ensure that the cables are firmly connected to the storage controllerand the SAS backplane board.
