1. Read the safety information that begins on page vii and “Installation guidelines”
on page 169.
2. If only one power supply is installed, turn off the server and peripheral devices.
3. Disconnect the power cord from the power supply that you are removing.
4. Grasp the power-supply handle.
5. Press the orange release latch to the left and hold it in place.
6. Pull the power supply part of the way out of the bay, then release the latch and
support the power supply as you pull it the rest of the way out of the bay.
7. 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.
Installing a hot-swap ac power supply
The following notes describe the type of ac power supply that the server supports
and other information that you must consider when you install a power supply:
v Make sure that the devices that you are installing are supported. For a list of
supported optional devices for the server, see http://www.ibm.com/systems/info/
x86servers/serverproven/compat/us/.
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-03.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 110 V ac or 220 V ac auto-sensing.
v You cannot mix 460-watt and 675-watt power supplies, high-efficiency and
non-high-efficiency power supplies, or ac and dc power supplies in the server.
v The following information applies when you install 460-watt power supplies in the
server:
– A warning message is generated if the total power consumption exceeds 400
watts and the server only has one operational 460-watt power supply. In this
case, the server can still operate under normal condition. Before you install
additional components in the server, you must install an additional power
supply
– The server automatically shuts down if the total power consumption exceeds
the total power supply output capacity
226 IBM System x3650 M3 Types 4255, 7945, and 7949: Problem Determination and Service Guide
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