Cisco XR 12406 Installation Manual page 164

Troubleshooting the Cooling Subsystem
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If you are still unable to resolve the problem, contact a service representative for
assistance.
Cisco XR 12406 Router Installation Guide
4-34
The preceding message could also indicate a faulty component or temperature
sensor. Before the system shuts down, use the show environment all or show
environment table command to display the internal system environment,
including voltages and temperatures measured at each card.
Chapter 4 Troubleshooting the Installation
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