RX900 S1 Maintenance Manual 59
Power supply

5.2.4 Reinstalling the PSU

ÊInsert the new power supply unit into the bay as described in "Installing a
hot-plug Power Supply Unit (PSU)" on page54.
IMake sure that the power supply unit engages correctly in the
mounting location and is locked in position. This is the only way to
prevent the power supply unit from sliding out of its mountings and
being damaged during transportation.

5.2.5 Completing the task

ÊPerform the following procedures to complete the task:
1. Only when replacing a non-defective hot-plug power supply unit in a
non-redundant configuration: "Bringing the server back to operation" on
page 51
2. Close the rear door of the rack, see "Closing the rack door" on page51

5.3 Removing a redundant hot-plug power

supply unit

5.3.1 Required tools

Starting and completing the task:
key for the rack doors (if applicable)
Removing the redundant power supply unit: tool-less

5.3.2 Starting the task

ÊPerform the following procedures:
1. Open the rear door of the rack, see "Opening the rack door" on page40
Trained personnel