Troubleshooting The Power And Cooling Systems - Cisco IAD2801 Series Installation Manual

Solving Problems
When solving problems, consider the following router subsystems:
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Troubleshooting the Power and Cooling Systems

Both the system LED and the fans can help you troubleshoot a power problem. Check the following
items to help isolate the problem:
Normal Indications
With the power switch on, the normal indications are:
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Fault Indications
Check the following symptoms to locate or eliminate faults in the power and cooling systems:
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Cisco IAD2801 Series Integrated Access Devices Hardware Installation Guide
A-2
Power and cooling systems—External power source, power cable, router power supply and circuit
breaker, and router blower and fan. Also consider inadequate ventilation or air circulation.
Modules—LEDs on the modules help identify a failure.
Cables—External cables that connect the router to the network.
SYS PWR LED on green and continuous
Fans operating
With the power switch on, is the SYS PWR LED on?
If the LED is green and continuous, the router is receiving power and is functional.
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If the LED is amber, the router is receiving power but is not functional.
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If the LED is off, check the power source and power cable.
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With the power switch on and the SYS PWR LED on and green, do the fans operate?
If no, check the fans.
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If yes, the power system is functioning.
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With the power switch on and the PWR SYS LED off, do the fans operate?
If yes, the router is receiving power. The fans are connected directly to the DC outputs of the
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power supply.
If no, check the power source and power cable.
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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 2-3.
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.
Appendix A
"Environmental
"General Site Requirements" section on
Troubleshooting
OL-12433-01