132 Installing System ComponentsInstalling the Control Panel Board1 Install the front panel screw in the screw hole located beneath the left USBconnector. See Figure 3-22.2 Install the control panel board in the system chassis and secure with thethree Torx screws. See Figure 3-22.3 Connect the display module cable to the control panel board.4 Connect the control panel cable and USB cable to the control panel board.5 If applicable, reconnect the Internal SD Module cable to the control panelboard, and install the USB key.6 Close the system. See "Closing the System."7 Reconnect the system to the power source and turn on the system andattached peripherals.SAS BackplaneRemoving the SAS BackplaneCAUTION: 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 If applicable, remove the bezel. See "Removing the Front Bezel."2 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.3 Open the system. See "Opening the System."CAUTION: To prevent damage to the drives and backplane, you must remove thehard drives from the system before removing the backplane.CAUTION: You must note the number of each hard drive and temporarily labelthem before removal so that you can replace them in the same locations.4 Remove all hard drives. See "Removing a Hot-Swap Hard Drive."NOTE: You may find it easier to remove the SAS backplane if you remove the fanassembly first. See "Removing a Cooling Fan."
