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Replacing the Power Supply
You do not need to shut down the system to replace a power supply module. The redundant feature will keep the system up and running while you replace the failed
1.First unplug the power cord from the failed power supply module.
2.To remove the failed power module, push the release tab (on the back of the power supply) to the side and then pull the module straight out (see Figure
3.The power supply wiring was designed to detach automatically when the module is pulled from the chassis.
4.Replace the failed power module with another
5.Simply push the new power supply module into the power bay until you hear a click.
6.Finish by plugging the AC power cord back into the module.