184 Troubleshooting Your System6 Turn off the system and attached peripherals, and disconnect the systemfrom its electrical outlet.7 Open the system. See "Opening the System" on page 87.8 Ensure that the controller card is firmly seated into the system boardconnector. See "Installing an Expansion Card" on page 124.9 If you have a battery-cached PERC controller, ensure that the RAIDbattery is properly connected and, if applicable, the memory module onthe PERC card is properly seated.10 Verify that the cable connections between the SAS backplane(s) and theintegrated storage controller are correct. See "Installing the StorageController Card" on page 131 and Figure 3-22.Ensure that the cables are firmly connected to the storage controller andthe SAS backplane board.11 Close the system. See "Closing the System" on page 89.12 Reconnect the system to its electrical outlet, and turn on the system andattached peripherals.If the problem persists, see "Getting Help" on page 199.13 Replace the front bezel. See "Installing the Front Bezel" on page 87.Troubleshooting Expansion CardsNOTE: When troubleshooting an expansion card, see the documentation for youroperating system and the expansion card.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 serviceand support 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.1 Run the appropriate online diagnostic test. See "Using Online Diagnostics"on page 189.2 If installed, remove the front bezel. See "Removing the Front Bezel" onpage 86.
