Troubleshooting The Power Subsystem - Cisco 7200 VXR router User Manual

Troubleshooting the Power Subsystem

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When all LEDs come on to indicate that the system has booted successfully, the initial
system banner should be displayed on the console screen. If it is not displayed, see the
section "Connecting to the Console and Auxiliary Ports" in the chapter "Installing a
Cisco 7200 VXR Router" to verify that the terminal is set correctly and that it is
properly connected to the I/O controller's console port.
Troubleshooting the Power Subsystem
Check the following to help isolate a problem with the power subsystem:
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On the first power supply, is the power OK LED on?
— If yes, the power source is good, and the power supply is functional.
— If no, make sure the power cable is connected at both ends.
— If the power OK LED remains off, and the power switch is set correctly, suspect the
— If the power OK LED fails to come on after you connect the power supply to a new
— If the LED still fails to come on when the power supply is connected to a different
A-8 Cisco 7200 VXR Installation and Configuration Guide
power source or the power cable. Turn the switch off, connect the power cable to
another power source, if available, and turn the switch back on. If the LED comes
on, the problem is the first power source.
power source, replace the power cord, and turn the switch back on. If the AC power
(or input power) LED then comes on, return the first power cable for replacement.
power source with a new power cable, the power supply is probably faulty. If a
second power supply is available, install it in the other power supply bay and
contact a service representative for further instructions.