2. If only one power supply is installed, turn off the server and peripheral devices
and disconnect all power cords.
3. If the server is in a rack, at the back of the server, pull back the cable
management arm to gain access to the rear of the server and the power supply.
4. Press and hold the release tab to the left. Grasp the handle and pull the power
supply out of the server.
5. 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 power supply
Use this information to replace a hot-swap ac power supply.
About this task
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 Before you install an additional power supply or replace a power supply with
one of a different wattage, you may use the IBM Power Configurator utility to
determine current system power consumption. For more information and to
download the utility, go to http://www.ibm.com/systems/bladecenter/
resources/powerconfig.html.
v The server comes with one hot-swap 12-volt output power supply that connects
to power supply bay 1. The input voltage is 100-127 V ac or 200-240 V ac
auto-sensing.
v Power supplies in the server must be with the same power rating or wattage,
and the same 80-plus efficiency level to ensure that the server will operate
correctly. For example, you cannot mix 550-watt and 750-watt power supplies in
the server. Moreover, you cannot mix 750-watt Platinum and 750-watt Titanium
supplies in the server.
v Power supply 1 is the default/primary power supply. If power supply 1 fails,
you must replace the power supply with the same wattage and the same 80-plus
efficiency level immediately.
v You can order an optional power supply for redundancy.
Hot-swap
power supply 2
Power supply
filler panel
Figure 178. Power supply removal
Chapter 5. Removing and replacing components 229
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