178 Troubleshooting Your System10 Remove all expansion cards installed in the system. See "Removing anExpansion Card" on page 118.11 Close the system. See "Closing the System" on page 85.12 Reconnect the system to the electrical outlet, and turn on the system andattached peripherals.13 Run the appropriate online diagnostic test.If the tests fail, see "Getting Help" on page 195.14 For each expansion card you removed in step 10, perform the followingsteps:a Turn off the system and attached peripherals, and disconnect thesystem from the electrical outlet.b Open the system. See "Opening the System" on page 84.c Reinstall one of the expansion cards.d Close the system. See "Closing the System" on page 85.e Run the appropriate diagnostic test.If the tests fail, see "Getting Help" on page 195.Troubleshooting the ProcessorsCAUTION: 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.1 Run the appropriate online diagnostics test. See "Using OnlineDiagnostics" on page 181.2 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.3 Open the system. See "Opening the System" on page 84.4 Remove the cooling fan assembly. See "Removing the Cooling FanAssembly" on page 110.
