Information Technology Reference
In-Depth Information
Table3-1
Hardware: Cisco 7500 Series Startup Problems and Solutions (continued)
Possible Problem Area
Solution
Cooling subsystem
Check to see whether the blower is operating when you
start up the system. If the blower is not operating, there
might be a problem with the blower or the +24 V DC
power:
1.
If the Output Fail LED is on, there might be a problem
with the +24V DC supply to the blower or fan tray at
either the power supply or the blower control board.
If the blower is not operating and the Output Fail LED
is off, ensure that the blower module is seated properly.
Ensure that the blower control board edge connector is
inserted fully in the backplane socket.
If the system and blower start up but shut down after
about 2 minutes, one or more fans might have failed or
might be operating out of tolerance. You will probably
see an error message similar to the following:
2.
%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 you see the following message at startup, the system
has detected an overtemperature condition or
out-of-tolerance power inside the chassis:
3.
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
goes on before the system shuts down.
This shutdown message might also indicate a faulty
component or temperature sensor. Before the system shuts
down, use the show environment or show environment
table commands to display the internal chassis
environment.
Ensure that heated exhaust air from other equipment is
not entering the inlet vents and that there is sufficient
clearance around the chassis to allow cooling air to
flow.
4.
continues
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