Power Led Is Off - Allied Telesis AT-3726XL Installation Manual

Troubleshooting
Power LED
is OFF
3-6
If there is no power to the switch, it cannot function.
A Power LED that is OFF may indicate:
# A loose power cord.
# Power supply failure, malfunction or loss of power to the
power supply.
# A power supply voltage is below acceptable levels.
# A high switch temperature due to fan failure or ambient
temperature extreme.
Perform the following steps in sequence; you need not proceed to
the next step if the problem is resolved:
1. Secure the power cord to the power source and check the Power LED
to see if it is ON.
2. Ensure that the voltage is within the required levels in your region.
3. Log on to Omega and run Diagnostics if you can (
administration>Diagnostics
4. Contact Allied Telesyn's technical support and report the results of
the tests.
System
) and record any failures.