User Guide

Chapter 7 Maintaining the Router
Removing and Replacing an AC Power Supply
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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
Troubleshooting the AC Power Supply Installation
Use the following procedure to troubleshoot the AC power supply if it is not
operating properly after installation.
Step 1 Make sure the power supply is seated properly as follows:
• Eject and reseat the PEM.
• The ejector lever is locked into place by its spring clip.
Step 2 Make sure the router is powered on and that all power cords are connected
properly:
• Power cords on the back panel of the power shelf are secured in place with
their retention clips.
• Power cords at the power source end are securely plugged into their own AC
power outlet.
• The source AC circuit breaker is switched on.
Step 3 Check the power supply status indicators:
• PWR OK (green)—Indicates the power supply is operating normally, and the
source AC voltage is within the nominal operating range of 200
VA C t o
240
VAC. This indicator lights when the power supply is properly seated in
position.
• FAULT (yellow)—Indicates the system detected a fault within the power
supply or the incoming voltage is too low. During normal operation, this
indicator remains off.
If the indicator is on:
– Check that the source voltage is within the correct range: 170 to 262 VAC
– Remove and then apply power to the power supply by disconnecting its
power cord. If the indicator remains on, replace the existing power supply
with a spare.
– If the spare power supply also fails, the problem could be a faulty power
shelf backplane connector. Power off the router and contact a Cisco
service representative for assistance.