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Chapter 3
Troubleshooting
No Power
If the Power LED is OFF, check the following to isolate the problem:
Make sure the AC/DC adapter is properly connected to the power
outlet and inserted into the power connection on the hub.
Determine whether or not the outlet is functional by plugging another
device into the receptacle.
Power the unit OFF and ON again.
If the problem presist, contact Allied Telesyn's Technical Support. Refer to
Appendix D for technical support telephone and fax numbers in your area.
Link/Activity LED
If the port is connected but the Link/Activity LED is dark (not lit), check the
following to isolate the problem:
The hub and the connected device's power are ON.
The port's cable is firmly seated in its connectors at the hub and at the
connected device.
The connected cable is good and is the correct type. Make sure that you
use Category 5 UTP cable in connecting 100 Mbps network devices;
the cable length should not exceed 100 meters (328 feet).
The connecting device, including any network adapter, is functioning.
For Port 8, check that the uplink switch is properly set for the
connected device. When connected to another hub, the uplink position
of this switch eliminates the need for a crossover cable. Note that only
one device should be set to "Uplink".
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