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Troubleshooting
LED Symptom Action
All LEDs are on. If the LEDs remain on for more than ten minutes, the RTU is
not functional. Unplug the unit and reapply power. If the ALM
LED is still on, contact the service provider.
ALM LED remains
on.
The power-on self-test may have failed. Unplug the unit and
reapply power. If the alarm LED is still on, contact the service
provider.
ALM and TST
LEDs are blinking.
Firmware download may be in progress. If firmware download
is not in progress or the LEDs continue blinking for more than
ten minutes, contact the service provider. Do not unplug the
unit, unless instructed to do so by the service provider.
DSL LED is off. Verify that the DSL cable is securely installed on both ends.
Unplug the unit and reapply power. If the problem continues,
contact the service provider.
DSL LED continues
to blink after the
power-on self-test.
The RTU is attempting to establish the DSL link or adjusting
the rate of the DSL line due to line conditions. If the DSL LED
continues to blink for more than ten minutes, contact the
service provider.
DSL LED is on and
there is no data
transmission.
The DSL link has been established but there is no data
transmission. Verify the Ethernet connection. If the problem
persists, contact the service provider.
DSL and Ethernet
LEDs are on and
there is no data
transmission.
The DSL link and the Ethernet link have been established but
there is no data transmission. If the problem continues, contact
the service provider.
Ethernet LED is off.
Verify that the Ethernet cable is securely installed at both ends,
and at least one PC is connected and powered on.
Verify that the correct straight-through or crossover cable is
installed. Refer to
Installing the Hotwire 5620 RTU
on page 9.
PWR LED is off.
Check that the power cord is securely installed on both ends.
If no LEDs are on, the power supply may be defective. Test the
outlet to verify power. If the problem persists, contact the
service provider.
If other LEDs are on, the PWR LED may be burned out. Unplug
the unit and reapply power; watch all LEDs during the
power-on self-test to verify that the PWR LED is functioning.
TST LED is on. A test initiated by the service provider may be active. Wait ten
minutes. If the TST LED does not go off, contact the service
provider.