Bridge/Router Installation and Configuration Guide

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.