System information

Troubleshooting Hardware
Book Title
3-22
Cooling subsystem Step 1 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:
• 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.
Step 2 If the system and blower start up but shut down after about two 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:
%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.
Step 3 If you see the following message at startup, 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 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.
Step 4 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.
Processor subsystem
Step 1 Check the RSP
1
LEDs. If no LEDs come on, ensure that the power
supplies and blower are functioning properly.
Step 2 Check the seating of the RSP. If the RSP is not seated properly, it will
hang the system.
Step 3 If the RSP CPU Halt LED is on, the system has detected a processor
hardware failure. Contact a technical support representative for
instructions.
Step 4 Check to see whether the RSP Normal LED is on, indicating that the
system software has initialized successfully and the system is
operational.
Step 5 Check the Enabled LED on each interface processor. This LED should
go on when the RSP has initialized the interface processor.
Step 6 If the Enabled LED on an individual interface processor is off, the
interface processor might have pulled away from the backplane. If the
interface processors are not seated properly, they will hang the system.
1 RSP = Route Switch Processor
Possible Problem Area Solution