Troubleshooting The Power And Cooling Systems; Environmental Reporting Features - Cisco 1120 Installation Manual

Appendix D Troubleshooting
The LEDs on the front-panel of the appliance enable you to determine the performance and operation of
Note
the appliance. For a description of these LEDs, see
When troubleshooting, check the following appliance subsystems first:
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Troubleshooting the Power and Cooling Systems

Both the power LED and the fans can help you troubleshoot a power problem. Check the following items
to help isolate the problem:
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Environmental Reporting Features

The CSACS 1120 Series appliance has protection circuits that monitor and detect overcurrent,
overvoltage, and overtemperature conditions inside the appliance. If the power supply shuts down or
latches off, an AC cycle switches off for 15 seconds and switches on for 1 second to reset the power
supply. For more information, see
OL-19455-01
Power and cooling systems (external power source, power cable, and appliance fans). Also, check
for inadequate ventilation, air circulation, or environmental conditions.
Adapter card—Checking the LEDs on the adapter card can help you to identify a failure.
Cables—Verify that the external cables connecting the appliance to the network are all secure.
When the CSACS 1120 Series appliance is connected to the power source, is the appliance power
LED on the front-panel on? If not, check the AC power cord connection; if the power LED is still
off, the problem might be due to a power supply failure.
Does the appliance shut down after being on for only a short time?
Check for an environmentally induced shutdown. For more information, see
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Reporting Features, page D-3
Check the fans. If the fans are not working, the appliance will overheat and shut itself down.
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If the fans are not working, you might need to check the power supply connection to the fans.
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Checking this connection will require you to shut down the appliance, remove any external
cables, and open up the appliance.
Ensure that the appliance intake and exhaust vents are clear.
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Check the environmental site requirements in
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Does the appliance partially boot, but the LEDs do not light? Check for a power supply failure by
inspecting the power LED on the front-panel of the appliance:
If the LED is on, the power supply is functional.
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– If the LED is off, refer to the Cisco Information Packet for warranty information, or contact your
customer service representative.
Reading the LEDs, page
section.
Temperature and Humidity Guidelines, page
Environmental Monitoring, page
Installation Guide for the Cisco 1120 Secure Access Control Server 4.2
Problem Solving
D-5.
Environmental
1-9.
2-9.
D-3