Lenovo 3823, 3821, 3822, 3719 manual

5.Remove the hot-swap hard disk drives (see “Removing a 2.5-inchhot-swap hard disk drive” on page 195).

6.Remove the power supply or power supplies from the power-supply cage (see “Removing a hot-swap power supply” on page 174).

7.Rotate the power-supply cage to its open position (see “Opening the power-supply cage” on page 158).

8.Remove the air baffle (see “Removing the air baffle” on page 169).

9.Remove the fan-cage assembly (see “Removing the fan-cage assembly” on page 171).

10.Note where the power, signal, and configuration cables are connected to the 2.5-inch hard disk drive backplane; then, disconnect them (see “SAS backplane connectors” on page 138).

11.Lift the retention latch that holds the backplane in place; then, grasp the top edge of the backplane and rotate it toward the rear of the server. When the backplane is clear of the drive-cage retention tabs, remove it from the server.

12.If you are removing another SAS backplanes, repeat steps 10 and 11 to remove the remaining backplane.

13.If you are instructed to return the 2.5-inch hard disk drive backplane, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.

Chapter 7. Installing optional devices and replacing customer replaceable units 199