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

6. If you are instructed to return the power supply, follow all packaging
instructions, and use any packaging materials for shipping that are supplied to
you.

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

This information provides instructions on how to replace a 1400-watt or 900-watt
hot-swap power supply.
The following notes describe the type of power supply that the server supports
and other information that you must consider when you install a power supply:
v The server comes standard with one 900-watt (input voltage 110 or 220 V ac
auto-sensing) hot-swap power supply or one 1400-watt hot-swap power supply
(input voltage 110 or 220 V ac auto-sensing) depending on your model.
Note: You cannot mix 110 V ac and 220 V ac input voltage power supplies in
the server, it is not supported.
v Do not mix 900 watt and 1400 watt power supplies in the server, it is not
supported.
v These power supplies are designed for parallel operation. In the event of a
power-supply failure, the redundant power supply continues to power the
system. The server supports a maximum of two power supplies.
Note: When two 900 watt or 1400 watt power supplies are installed and
connected to 110 V power source, redundancy is available only for a limited
configuration.
v The optional IBM Power Interposer for Redundant Power Option kit or the IBM
Microprocessor and Memory Expansion Tray must be installed in the server to
support two power supplies, if one is not installed in your model.
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
Chapter 6. Removing and replacing components
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