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Chapter 5 Troubleshooting the Installation
Troubleshooting the Power Subsystem
5-16
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
Use the following procedure to troubleshoot the power distribution system.
Step 1
Check each power supply to make sure that:
•
The ejector lever is fully closed and properly secured by the its captive screw.
•
The PWR OK indicator is on.
•
The FAULT and TEMP indicators are both off.
•
The ILIM is off (2000W AC only)
•
The OC indicator is off (2500 W AC and 2400 W DC only)
If the power supplies meet the above criteria, then the correct source power
is present and within tolerance. The power supplies are functioning properly.
Step 2
Make sure the blower modules are operating.
•
If the blower modules are functioning, then the –48 VDC from the chassis
backplane and the cables from the backplane to the blower modules are
functioning properly.
•
If a blower module is not functioning, there may be a problem with either the
blower module itself, or the –48 VDC power supplied to the blower module.
Eject and reseat the blower module.
•
If a blower module is still not operating there could be a problem with the
blower module controller card or cable. Replace the blower module.
Contact your Cisco representative if replacing the blower module does
not fix the problem.