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Cisco 7200 VXR Installation and Configuration Guide
OL-5013-09
Chapter 5 Troubleshooting the Installation
Troubleshooting the Cooling Subsystem
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If the ENABLED LED on an individual adapter is off, suspect that the adapter has pulled away
from the midplane. Reseat the adapter in its slot (you do not have to turn off the system power
when removing or replacing port and service adapters). After the system reinitializes the
interfaces, the ENABLED LED on the adapter should go on.
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If the ENABLED LED remains off, the system detected a processor hardware failure. (This LED
should be on in normal operation.) Contact a service representative for instructions.
Troubleshooting the Cooling Subsystem
Check the following to help isolate a problem with the cooling system:
• When you start up the system, do the fans start operating?
To determine if the fans are operating, listen for them. In noisy environments, place your hand on
the left side of the chassis (when viewing the chassis from the front) to feel for air being forced out
the vents.
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If yes, the power to the fan tray is good.
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If no, there is a problem with the fan tray or power. See the “Troubleshooting the Power
Subsystem” section on page 5-6.
• The following message, if displayed, indicates that the system has detected an overtemperature
condition or out-of-tolerance power condition inside the chassis.
Queued messages:
%ENVM-1-SHUTDOWN: Environmental Monitor initiated shutdown
If an environmental shutdown results from an out-of-tolerance power condition, the PWR OK LED
goes off, and the system shuts down. (See the
“Troubleshooting the Power Subsystem” section on
page 5-6.) Although an overtemperature condition is unlikely at initial startup, ensure that heated
exhaust air from other equipment is not entering the router’s inlet vent, and that there is sufficient
clearance around the sides of the chassis to allow cooling air to flow. See
Chapter 2, “Preparing for
Installation,” the “Site Requirement Guidelines” section on page 2-3 for preventive site
configurations.
The above message could also indicate a faulty component or temperature sensor. Before the system
shuts down, use the show environment or show environment table command to display the internal
chassis environment. (See
Chapter 1, “Cisco 7200 VXR Product Overview,” the “Functional
Overview” section on page 1-53, for descriptions of the show environment and show environment
table commands.)
If you experience trouble with the startup that is not resolved with these procedures, contact a service
representative for assistance and further instructions.
Fiber-Optic Cleaning Information
We strongly recommend cleaning all optical connections before reconnecting any optical cables to
equipment. For information about cleaning optical connectors, see the
Inspection and Cleaning
Procedures for Fiber-Optic Connections document and the Compressed Air Cleaning Issues for
Fiber-Optic Connections document.
