Troubleshooting The Dc Power Shelf Installation - Cisco 12416 Installation And Configuration Manual

Chapter 7 Maintaining the Router

Troubleshooting the DC Power Shelf Installation

Step 1
Step 2
Step 3
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Use the following procedure to troubleshoot the DC power shelf if it is not
operating properly after installation.
Make sure that the power shelf is seated properly:
The jackscrew is tightened securely.
•
The captive screws on the flanges are tightened securely.
•
Make sure each power supply is seated properly:
Eject and reseat the PEM.
•
• The captive screw on the ejector lever is tightened securely.
The power switch is in the on (1) position (2400 W only).
•
Make sure the router is powered on and that all power cords are connected
properly:
All power cables are securely connected to their terminal studs on the back
•
panel.
Each pair of PEM power cables is connected to a dedicated 60 A DC service.
•
The source DC circuit breaker is switched on.
•
The PEM circuit breaker is switched on (2000 W only).
•
If the circuit breaker does not stay switched on, check the polarity of the
–
power cables to the PEM.
A PEM trips its circuit breaker if it detects a reverse-polarity
Note
condition. This condition does not damage the PEM and it should
operate properly after the polarity is corrected.
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
Removing and Replacing the DC-Input Power Shelf
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