Installing System Components 1314 Reconnect the power cable to the backplane board.5 If applicable, reconnect the optical drive power cable to the backplaneboard. See "Installing the Optical Drive" on page 110.6 Reinstall the SAS controller daughter card. See "Installing a SASController Daughter Card" on page 84.7 Reattach the SAS controller daughter card cable.8 Reinstall the hard drives. See "Installing a Hot-Plug Hard Drive" onpage 74.NOTE: Reinstall the hard drives in the same drive bays from which they wereremoved.9 Close the system. See "Closing the System" on page 71.Control Panel Assembly (Service-only Procedure)NOTE: The control panel assembly consists of two separate modules—the displaymodule and the control panel circuit board. Use the following instructions toremove and install either module.Removing the Control Panel AssemblyCAUTION: Only trained service technicians are authorized to remove the systemcover and access any of the components inside the system. See your ProductInformation Guide for complete information about safety precautions, workinginside the computer, and protecting against electrostatic discharge.1 If applicable, remove the bezel. See "Removing the Front Bezel" onpage 69.2 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet and peripherals.3 Open the system. See "Opening the System" on page 71.4 Disconnect the control panel cable at back of the control panel board. SeeFigure 3-31.NOTICE: Do not pull on the cable to unseat the connector. Doing so candamage the cable.a Squeeze the metal tabs on the ends of the cable connector.b Gently work the connector out of the socket.
