Working With Hot-Swap Power Supplies - IBM TotalStorage 300 Service Manual

5. Return to normal operation.

Working with hot-swap power supplies

The power supplies are customer replaceable units (CRUs) and do not require
preventive maintenance.
v The power supplies must always be in their proper places to maintain proper
v Use only the supported power supplies for your specific storage unit.
Removing a hot-swap power supply
v
To remove a hot-swap power supply:
1. Turn the power supply switch to the OFF position.
b. If the amber Fault LED is completely on and not flashing, remove the drive
from the unit and wait 10 seconds; then, reinstall the drive.
cooling.
CAUTION:
Never remove the cover on a power supply or any part that has the
following label attached.
Hazardous voltage, current, and energy levels are present inside any
component that has this label attached. There are no serviceable parts
inside these components. If you suspect a problem with one of these parts,
contact a service technician.
Note: For safety notice translations, see "Safety and environmental notices" on
page 173.
Chapter 5. Installing and replacing IBM NAS 300 components
105