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Time and items required
The procedure to remove or install a each power supply takes less than five minutes. A power supply
unit or filler panel is required for the power supply replacement.
Removing a power supply
About this task
To remove a power supply, complete the following steps.
Procedure
1. Before removing a power supply assembly, Verify if you can remove a power supply and the leave
device operating (hot swap replacement) or must power down the device (cold-swap replacement).
Note: Depending on the blade configuration of the device and the number of power supplies
installed, the device may be able to continue operating while replacing a power supply. Refer to
"Power supply specifications" and "Power supply requirements" in Appendix B, "Product
Specifications," on page 231 for minimum power supplies required for low and high voltage line
operation, redundancy in case of power supply failure, and other specifications. If there is insufficient
power, the device will power down blades until the power demand can be met.
2. Perform one of the following steps:
v If you need to power down the device to remove a power supply, enter the sysShutdown command.
When command output indicates that the device has completed shut-down, remove power cords
from all power supply assemblies.
v If you can leave the device in operation and replace a power supply, unplug the power cord from
the power supply assembly that you are replacing.
Note: Be sure to replace the power supply as soon as possible.
3. Loosen the captive screw on the right side of the power supply assembly until the screw releases from
the chassis. The captive screw is located just below the airflow label on the right side of the power
supply assembly. If necessary use a Phillips screwdriver.
4. Grasp the handle and pull, sliding the power supply from the chassis and supporting the power
supply from beneath as you remove it.
Power Supply Assemblies
167
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