Installing the SAS Backplane
1Install the SAS backplane:
a Lower the backplane into the system, being careful to avoid damaging components on the face of the board.
b Align the slots in the backplane with the retention hooks on the back of the drive bays, then move the backplane forward until the retention hooks fit through the slots in the backplane. See Figure
c Slide the backplane downward until the two blue retention latches snap into place.
2Connect the SAS data and power cables to the SAS backplane.
3Install the hard drives in their original locations.
4Close the system. See "Closing the System" on page 83.
5Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
Power Distribution Board (Service-Only Procedure)
The power distribution board is located on your system directly behind the power supply fan modules. This feature provides additional cooling to the power supplies through the power distribution shroud that routes airflow to the power supplies. See Figure
Removing the Power Distribution Board
WARNING: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before you begin this procedure, review the safety instructions that came with the system.
1Remove the power supplies from the system. See "Removing a Redundant Power Supply" on page 92.
2Locate the power distribution shroud cover and lift it out. See Figure
3Disconnect power distribution cables from the system board (see "System Board
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