Cisco Systems Cisco 12008 manual Additional Troubleshooting Reference Information

Additional Troubleshooting Reference Information

+3.3 VDC and +5 VDC from the DC-DC converter, the +5.2 VDC for the MBus module, and the operating voltage for the fan trays. Each command also displays the temperature measurements made by two sensors on each card (one for inlet air temperature and one for the card’s hot-spot temperature), as well as a temperature measurement made by a sensor in the power supply(ies).

If an environmental shutdown results from an out-of-tolerance power condition, the OUTPUT FAIL LED on the power supply goes on before the system shuts down. In this case, refer to the section entitled “Troubleshooting the Power Subsystem.”

—Although an overtemperature condition is unlikely at initial system startup, ensure that heated exhaust air from other equipment in the immediate environment is not entering the air filter assembly; in addition, ensure sufficient clearance — at least 12 inches (30.5 cm) — in the lower front and top rear of the chassis to enable cooling air to freely enter and be expelled from the chassis.

—Check the condition of the air filter. If it appears dirty, remove the filter and clean it, or replace it altogether.

There are no field-replaceable components in the fan trays. If a fan tray is faulty, you must replace the entire unit.

If you are still unable to resolve a problem with the router’s cooling subsystem, contact a Cisco service representative for assistance.

Additional Troubleshooting Reference Information

The following additional reference materials are available for troubleshooting your Cisco 12008 installation:

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The various configuration notes for the system’s major components

Troubleshooting Internetworking Systems

Debug Command Reference

System Error Messages

5-20Cisco 12008 Gigabit Switch Router Installation and Configuration Guide