Removing A 1400-Watt Or 900-Watt Hot-Swap Power Supply - IBM System x3750 M4 Type 8722 Installation And Service Manual

Removing a 1400-watt or 900-watt hot-swap power supply

When you remove or install a hot-swap power supply, observe the following
precautions.
Statement 5
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.
To remove a hot-swap power supply, complete the following steps:
1. Read the safety information that begins on page "Safety" on page vii and
2. If only one power supply is installed, turn off the server and peripheral devices
3. If the server is in a rack, at the back of the server, pull back the cable
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System x3750 M4 Types 8722 and 8733: Installation and Service Guide
"Installation guidelines" on page 33.
and disconnect all power cords.
management arm to gain access to the rear of the server and the power supply.