Replacing Power Supplies - Cisco c240 Installation And Service Manual

Chapter 3 Maintaining the Server

Replacing Power Supplies

The server can have one or two power supplies. When two power supplies are installed they are
redundant as 1+1 and hot-swappable.
•
•
•
If you have ordered a server with power supply redundancy (two power supplies), you do not have to
Note
power off the server to replace power supplies because they are redundant as 1+1 and hot-swappable.
Do not mix power supply types in the server. Both power supplies must be the same wattage and Cisco
Note
product ID (PID).
Remove the power supply that you are replacing or a blank panel from an empty bay:
Step 1
a.
b.
c.
d.
Step 2 Install a new power supply:
a.
b.
c.
d.
OL-32474-01
See Power Specifications, page A-2
See Rear Panel LEDs and Buttons, page 3-5
See Wiring a DC Power Supply, page 3-70
Perform one of the following actions:
If your server has only one power supply, shut down and power off the server as described in
–
Shutting Down and Powering Off the Server, page
If your server has two power supplies, you do not have to shut down the server.
–
Remove the power cord from the power supply that you are replacing.
For a DC power supply, release the electrical connector block from the power supply by pushing the
orange plastic button on the top of the connector inward toward the power supply (see
Pull the connector block from the power supply.
Grasp the power supply handle while pinching the green release lever towards the handle (see
Figure 3-33).
Pull the power supply out of the bay.
Grasp the power supply handle and insert the new power supply into the empty bay.
Push the power supply into the bay until the release lever locks.
Connect the power cord to the new power supply.
For a DC power supply, push the electrical connector block into the power supply.
If you shut down the server, press the Power button to return the server to main power mode.
Installing or Replacing Server Components
for more information about the supported power supplies.
for information about the power supply LEDs.
for information about wiring a DC power supply.
3-9.
Cisco UCS C240 M4 Server Installation and Service Guide
Figure 3-34).
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