Troubleshooting The Cisco 7513, Cisco 7513-Mx, And Cisco 7576 Cooling Subsystem - Cisco 7500 Series Configuration Manual

Troubleshooting Guidelines for the Cisco 7513, Cisco 7513-MX, and Cisco 7576
R E V I E W D R A F T — C I S C O C O N F I D E N T I A L
If you are unable to resolve the problem or if you determine that either the power supply or power cable
is faulty, contact a service representative for instructions.
Troubleshooting the Cisco 7513, Cisco 7513-MX, and Cisco 7576 Cooling
Subsystem
This section provides information on troubleshooting the Cisco 7513, Cisco 7513-MX, and Cisco 7576
cooling subsystem.
Check the following to help isolate the problem:
•
•
Cisco 7500 Series Installation and Configuration Guide
8-16
When you start up the system, does the blower go on?
To determine if the blower is operating, listen for the blower motor. In noisy environments, place
your hand near the middle of the plastic panel on the front of the chassis (opposite the interface
processor end of the chassis) to feel for air being forced out the exhaust vent.
– If yes, the +24 VDC line to the blower is good, but there might be a problem with the software.
– If no, there is a problem with the blower or the +24 VDC power. If the output fail LED is on,
there could be a problem with the +24VDC supply to the blower either at the power supply or
the blower control board.
– If no and the output fail LED is off, ensure that the blower module is seated properly. To remove
and reseat the blower module, see the
7513-MX, and Cisco 7576 Blower Module" section on page
control board edge connector is inserted fully in the backplane socket. After you replace the
chassis cover panel, try starting the system again.
Do the system and blower start up but shut down after about 2 minutes?
If you have changed the software configuration register boot field settings or altered the
–
configuration file boot instructions, the system could be booting a software image that does not
recognize the signals from the blower control board, and therefore assumes that the cooling
subsystem is not operating.
If the following message is displayed, it indicates that the blower has failed or is operating out
–
of tolerance:
%ENVM-2-FAN: Fan has failed, shutdown in 2 minutes
If the blower or the blower control board fails, you must replace the blower module.
If the following message is displayed, it indicates that the system has detected an
–
overtemperature condition or out-of-tolerance power 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 output fail
LED will go on before the system shuts down. See the
7513-MX, and Cisco 7576 Power Subsystem" section on page
Although an overtemperature condition is unlikely at initial startup, ensure that heated exhaust
air from other equipment is not entering the inlet vents, and that there is sufficient clearance
around the front and rear of the chassis to allow cooling air to flow. Refer to the guidelines in
Chapter 2, "Preparing for Installation,"
Chapter 8 Troubleshooting a Cisco 7500 Series Router
"Removing and Replacing the Cisco 7513, Cisco
7-10. Ensure that the blower
"Troubleshooting the Cisco 7513, Cisco
8-15.
for preventive site preparation recommendations.
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