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Installing the Cisco NCS 4201
Note
The Cisco NCS 4201 power supplies are hot-swappable. If you have installed redundant power supplies, you
can replace a single power supply without interrupting power to the chassis.
Caution
To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power supply
has been removed or replaced.
Warning
When you install the unit, the ground connection must always be made first and disconnected last. Statement
1046
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement
1030
Warning
Installation of the equipment must comply with local and national electrical codes. Statement 1074
Note
Open and remove the door before performing this procedure. See
Follow these steps to remove and replace an AC power supply:
Step 1
Disconnect the power cord from the power source. Do not touch the metal prongs on the power cord when it is still
connected to the power supply.
Step 2
Remove the power cord from the power connection on the power supply. Do not touch the metal prongs embedded in
the power supply.
Step 3
Loosen the captive installation screw as shown in the figure below.
Removing and Replacing an AC Power Supply
Removing the Front Door
Cisco NCS 4201 Hardware Installation Guide
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