IBM System x3650 M4 BD Type 5466 Installation And Service Manual page 220

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.
Statement 8
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.
Attention: During normal operation, each power-supply bay must contain either
a power supply or power-supply filler for proper cooling.
To replace a hot-swap ac power supply, complete the following steps.
Procedure
1. Read the safety information that begins on page "Safety" on page vii and
2. Touch the static-protective package that contains the hot-swap power supply to
3. If you are installing a hot-swap power supply into an empty bay, remove the
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System x3650 M4 BD Type 5466: Installation and Service Guide
"Installation guidelines" on page 32.
any unpainted metal surface on the server; then, remove the power supply
from the package and place it on a static-protective surface.
power-supply filler panel from the power-supply bay. Meanwhile, if you are
replacing a failed hot-swap power supply, remove it from the bay.