Dell R900 SAS Backplane Service-only Procedure, Removing the SAS Backplane 3.5 Hard Drives, 114

4Slide the DRAC onto the metal tab of the I/O riser.

5Align the DRAC with the three DRAC mounting posts on the I/O riser.

CAUTION: To prevent damage to components on the I/O riser, support the I/O riser at each of the plastic clips.

6Press the DRAC onto the I/O riser until three DRAC mounting posts snap into place.

7Attach the two ribbon cables from the I/O riser to the DRAC.

NOTE: The ribbon cables can only be installed one way and they are labeled for correct placement on the DRAC and the system board.

8Install the I/O riser. See "Installing the I/O Riser" on page 111.

SAS Backplane (Service-only Procedure)

Removing the SAS Backplane (3.5" Hard Drives)

1Remove the system board. See "Removing the System Board" on page 122.

2Remove the optical drive. See "Removing the Optical Drive" on page 88.

3Remove the hard drives. See "Hard Drives" on page 62.

4Disconnect the control panel connector from the back of the SAS backplane. See Figure 3-25.

114

Installing System Components