When you remove a power supply, observe the following precautions.

CAUTION:
The power control button on
the device and the power switch on the power supply do not turn off
the electrical current supplied to the device. The device also might
have more than one power cord. To remove all electrical current from
the device, ensure that all power cords are disconnected from the
power source.


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.
Figure 1. Hot-swap power supply label on the cover
To remove a hot-swap power supply, do the following:
Attention: This type of power supply is hot-swap only
when two power supplies are installed for redundancy. If only one
power supply is installed, you must turn off the server first before
removing the power supply.