Cisco XR 12404 Installation Manual page 124

Troubleshooting the Cooling Subsystem
If you are still unable to resolve the problem, contact a service representative for
assistance.
Cisco XR 12404 Router Installation Guide
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clearance (at least 6 inches, 15.24 cm) around all sides of the chassis to allow
cooling air to enter and hot air to exhaust. Should an overtemperature
condition occur at initial startup:
Check the condition of the air filter. If the air filter appears dirty, you
–
should remove the air filter and replace it; or remove the air filter, take it
away from the chassis, and vacuum the air filter.
The overtemperature condition message could also indicate a faulty
–
component or temperature sensor. Before the system shuts down, use the
show environment all or show environment table commands to view
the internal system environment including voltages and temperatures
measured at each card.
Chapter 4 Troubleshooting the Installation
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