14
Troubleshooting
LED Symptom
Action
All LEDs remain on. The RTU is not functional. If the LEDs remain on after five
minutes, contact the NSP.
ALM LED remains
on.
The power-on self-test may have failed. Unplug the unit and
reapply power. If the alarm light is still on, contact the NSP.
ALM and TST
LEDs are on.
Firmware download may be in progress. If the LEDs remain on
after five minutes, contact the NSP.
DSL LED is off.
Verify that the DSL cable is securely installed on both ends. If
the problem continues, contact the NSP.
DSL LED continues
to blink after the
power-on self-test.
The RTU is attempting to establish the DSL link or is adjusting
the rate of the DSL line due to line conditions. If the LED
continues to blink for more than five minutes, contact the NSP.
DSL LED is on and
there is no data
transmission.
The DSL link has been established but there is no data
transmission. First, verify the DTR connection. If the problem
persists, contact the NSP.
DSL and DTR
LEDs are on and
there is no data
transmission.
The DSL and DTR links have been established but there is no
data transmission. If the problem persists, contact the NSP.
DSL and DTR
LEDs are off.
Firmware download may be in progress. Verify that the ALM
and TST LEDs are on.
DTR LED is off.
Verify that the DTE cable is securely installed at both ends, and
that the DTE is connected and powered on.
Verify that the correct V.35 or EIA-530A DTE cable is installed.
Refer to
Installing the Hotwire 5546 RTU, page 8.
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 NSP.
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 local loopback test may be active. Refer to
Hotwire 5546
RTU Configuration Setup, page 12.
A test initiated by the NSP may be active. Wait five minutes. If
the TST LED does not go off, contact the NSP.
NOTE:
Firmware download is available via the Console Port. Contact the NSP for details.
