Troubleshooting the Cooling System
The cooling system consists of fan trays and an anti-dust mesh.A malfunctioning fan/fan tray or
dust-full anti-dust mesh can influence the ventilation through the chassis. When the system is
over heated, it will shut itself down.
When the cooling system malfunctions, take the following steps to troubleshoot:
l Use the command show environment to view the chassis temperature and fan spinning
speed.
l Check the fan LED. When the fans are running normally, the LED is solid green; when it is
orange or red, one or more fans fail, and you should replace the fan/fan tray immediately to
prevent over-heating of the system. See Replacing a Cooling System.
Troubleshooting the Power System
Check the PWR LED on the front panel of the device. If the power supply is functioning nor-
mally, the PWR LED is solid green. If the LED is off, take the following steps to troubleshoot:
l Make sure the power supply cable is connected correctly.
l Ensure that the voltage of the power source conforms to the required voltage.
For the PWR LED information, see LED IndicatorsLED Indicators.
Troubleshooting the Configuration System
The Console configuration terminal shows system booting message when the device is powered
on. If the configuration system has failed, it displays error information or nothing at all.
If the configuration terminal shows no information, take the following steps to troubleshoot:
l Make sure the power supply is correctly connected and powered on.
l Verify the Console cable is connected properly.
l Ensure the terminal configuration settings are correct.
If above steps reveal no error, the Console cable may be broken.
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Chapter 6 Troubleshooting
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