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Problem Solving Using a Subsystems Approach
Troubleshooting the Cooling Subsystem
Check the following to help isolate a problem with the cooling subsystem:
Table 5-2
Troubleshooting the Cooling Subsystem
Symptom
System displays the following message:
Router: 00:03:46:%ENVM-3-BLOWER:Fan 2 may have
failed
System shuts down, some fans may or may not
continue to rotate, and the following error message is
displayed:
Queued messages:
%ENVM-1-SHUTDOWN: Environmental Monitor
initiated shutdown
System shuts down and the following error message
is displayed:
Queued messages:
%ENVM-1-SHUTDOWN: Environmental Monitor
initiated shutdown
This error message indicates that the system has
detected an overtemperature condition or
out-of-tolerance power condition inside the chassis.
Note
The system fans may continue to operate
although the system shuts down.
Cisco 7201 Installation and Configuration Guide
5-6
Possible Cause
One or more fans are not operating.
This error message indicates that the system
has detected an overtemperature condition or
out-of-tolerance power condition inside the
chassis.
•
One or more fans are not operating.
•
The fans are operating too slowly.
•
The power supply is not operating.
To determine if the fans are operating, listen
for them. In noisy environments, place your
hand on the rear of the chassis to feel if air is
being forced out the vents.
Heated exhaust air from other equipment is
entering the router's inlet vents.
The error message could 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 3, "Starting and
Configuring the Router,"
the
Functions" section on page 3-6
descriptions of the show environment and
show environment table commands.)
If an environmental shutdown results from an
out-of-tolerance power condition, the system
shuts down.
Chapter 5
Troubleshooting Initial Startup Problems
Possible Solution
Contact a service
representative
Contact a service
representative.
Move other
equipment or the
router to ensure
proper airflow.
Contact a service
representative.
"Reporting
for
If the system still fails
to come up when the
power supply is
connected to a
different power
source with a new
power cable, the
power supply is
probably faulty.
Contact a service
representative.
OL-11364-04
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Troubleshooting
