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Chapter 3
Troubleshooting
This chapter contains information on how to troubleshoot the switch in the
event that a problem occurs.
Note
If you are still unable to resolve the problem after following the
instructions in this chapter, contact ATI Technical Support for
assistance. Refer to “Contacting Allied Telesis” on page 9.
Check the POWER LED on the front of the switch. If the LED is OFF,
indicating that the unit is not receiving power, do the following:
Ensure that the power cord is securely connected to a power outlet and
that the other end of the power cord is securely connected to the back
of the switch.
Verify that the power outlet has power by connecting another device
to it.
Try connecting the unit to another power source.
Try using a different power cord.
Verify that the voltage from the power source is within the required
levels for your region.
Verify that the LNK/ACT LED for each port is ON. If a LNK/ACT LED is
OFF, do the following:
Verify that the ecoFriendly switch is OFF - switch is not depressed. If it
is ON (depressed), the LNK/ACT LEDs will not be ON or active.
Verify that the end-node connected to the port is powered ON and is
operating properly.
Verify that the twisted-pair cable is securely connected to the port on
the switch and to the port on the end-node.
Ensure that the twisted-pair cable does not exceed 100 meters (328
feet).
Verify that you are using the appropriate category of twisted-pair cable:
Category 3 or better for 10 Mbps operation and Category 5 and
Category 5E for 100 Mbps operation.
