Cisco Network Device 2800 Introduction Manual page 101

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Environmental Reporting Features
If the router is operating at an abnormally high temperature, the following message is displayed on the
console screen:
%SYS-1-OVERTEMP: System detected OVERTEMPERATURE condition. Please resolve cooling problem
immediately!
Some causes of abnormally high router temperature are as follows:
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Take steps to correct the problem. See also the
"Equipment Racks" section on page
Troubleshooting Modules, Cables, and Connections
Network problems can be caused by a module; cables or cable connections; or external devices such as
a modem, transceiver, hub, wall jack, WAN interface, or terminal. Check for the following symptoms to
help isolate the problem:
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OL-5789-01
Does the router shut down after being on a short time?
Check for an environmentally induced shutdown. See the next section,
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Reporting Features."
Check the environmental site requirements in the
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page 3.
Ensure that all interface cards and internal modules are correctly installed.
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Check for a power supply failure by inspecting the SYS PWR LED on the front panel. If it is
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green, the power supply is functional.
Router partially boots, but LEDs do not come on.
Check for a power supply failure by inspecting the SYS PWR LED on the front panel of the
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router. If the SYS PWR LED is blinking or continuous green or continuous amber, the power
supply is functional.
If the SYS PWR LED is not on, refer to the
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section of the "Cisco 2800 Series Hardware Documents: Introduction and Warnings"
for warranty information, or contact customer service.
Check for a power supply failure by inspecting the power supply LEDs on the front panel. See
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the "Reading System LEDs" section on page 4
Fan failure
Air conditioner failure in the room
Air blockage to cooling vents
Module is not recognized by the router.
Make sure that the module is firmly seated in its slot.
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Check the LEDs on the module. Each module has its own set of LEDs. For information on these
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LEDs, refer to the online
"General Site Requirements" section on
"Cisco 90-Day Limited Hardware Warranty Terms"
for power supply LED descriptions.
"Site Environment" section on page
5.
Cisco Network Modules Hardware Installation
Troubleshooting Cisco 2800 Series Routers
Solving Problems
"Environmental
document
4, and the
Guide.
3