140 Installing System ComponentsInstalling the SAS Backplane1 Lower the backplane into the system, being careful to avoid damagingcomponents on the face of the board.2 Align the slots on the SAS backplane with the tabs on the chassis.3 Slide down the SAS backplane until the release pin snaps into place.See Figure 3-28.4 Connect the SAS, data, and power cables to the SAS backplane.5 Connect the SAS, data, and power cables to their respective connectors.See Figure 3-28.6 Install the hard drives in their original locations. See "Installing a Hot-Swap Hard Drive" on page 93.7 Close the system. See "Closing the System" on page 86.8 Replace the front bezel. See "Installing the Front Bezel" on page 82.9 Place the system upright on a flat surface.10 Reattach any peripherals and connect the system to an electrical outlet.11 Turn on the system and attached peripherals.Power Distribution BoardRemoving the Power Distribution BoardCAUTION: 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 Turn off the system, including any attached peripherals, and disconnectthe system from the electrical outlet and peripherals.2 Remove the power supplies. See "Removing a Redundant Power Supply"on page 103 and "Removing a Non-Redundant Power Supply" on page 105.3 Open the system. See "Opening the System" on page 85.4 Disconnect all the power cables connected to the system board.
