Lenovo THINKSERVER 3821 - Manual (Page 207)

5. Remove the hot-swap hard disk drives (see “Removing a 2.5-inch hot-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