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Troubleshooting
Common Problems
Link /Activity
LED on Any Port
is OFF
Power LED is
OFF
48
This section lists common possible sources of errors and the actions
required to correct them.
This can indicate:
# A loose data cable.
# The device at the other end of the connection is powered OFF.
# The port's selected transmission mode does not match that of
the attached device.
Perform the following steps in sequence; you need not proceed to
the next step if the problem is resolved:
1. Make sure the data cables are secure.
2. Make sure the device at the end of the connection is powered ON.
3. Make sure that the port on the end node has been configured
correctly (e.g., port speed and duplex mode).
4. Check to be sure that the data cable adheres to the compliance
standards necessary for its length and for the type of port to which
it is connected.
A Power LED that is OFF can indicate:
# A loose power cord.
# Power supply failure, malfunction, or loss of power to the
power supply.
# A power supply voltage below acceptable levels.
# A high switch temperature due to fan failure or extreme
ambient temperature.
Perform the following steps in sequence; you need not proceed to
the next step if the problem is resolved:
1. Check to be sure that the power cord is securely connected to the
switch and the power source.
2. Ensure that the voltage is within the required levels in your region.
3. If possible, logon to Omega, run diagnostics
( Administration>Diagnostics ) and record any failures.
4. Contact Allied Telesyn's Technical Support and report the results
of the tests.
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