Installing System Components 127Installing the SAS Backplane1 Position the SAS backplane so that the securing tabs on the chassis arefully inserted into the securing slots on the backplane (see Figure 3-32).2 Slide the backplane to the right until the release pin snaps into place.3 Reconnect the following cables to the backplane (see Figure 3-32):• SAS cable• Power cable• Backplane cable4 Reseat the hot-plug hard drives in the system (see "Installing a Hot-Pluggable Hard Drive" on page 78).NOTE: Reinstall the hard drives in the same drive bays from which they wereremoved.5 Replace the processor airflow shroud (see "Installing the Processor AirflowShroud" on page 72).6 Replace the system cover (see "Installing the System Cover" on page 67).Control PanelRemoving the Control PanelCAUTION: 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 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet and from the peripherals.2 Remove the system cover (see "Removing the System Cover" on page 66).3 Remove the front-drive bezel (see "Removing the Front Bezel" onpage 63).
