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6. Messages and Troubleshooting
8784-A2-GB20-30 February 2001
6-5
Troubleshooting
The unit is designed to provide many years of trouble-free service. However, if a
problem occurs, refer to Table 6-2, Troubleshooting, for possible solutions.
Table 6-2. Troubleshooting
Symptom Possible Cause Solutions
Alarm LED is on. A system failure has
occurred.
Refer to Table 4-1, Health and
Status Messages, in Chapter 4,
Monitoring the Unit
, for the
recommended action.
Cannot access the unit
via the ATI.
The terminal is not set up for
the correct rate or data
format, or the unit is
configured so it prevents
access.
Check the cable and
connections.
Ensure that the unit is
configured properly in the
DSLAM. Verify its IP
address.
Reset the unit.
Device Fail
appears on the System
and Test Status screen
under Self-Test results.
The unit detects an internal
hardware failure.
Reset the unit.
Contact your service
representative.
No power, or the LEDs
are not lit.
The unit is not properly
seated in the DSLAM.
Verify that the unit is properly
inserted.
There is no power to the
DSLAM.
Verify that the DSLAM has
power.
An LED is not lit. LED is out. Run the Lamp Test. If the LED
in question does not flash with
the other LEDs, then contact
your service representative.
Not receiving data. The network or DSX-1 port
cables are not connected
(check front panel LEDs for
more information).
Check network and DSX-1
port cables.
Check Health and Status
menu.
Run Loopback tests. Refer to
Chapter 5,
Tes tin g
.
A test is being executed on
the unit (check the TEST LED
on the front panel).
Stop the test or wait for the test
to end.
The far-end device is offline. Make sure the far-end device
is on.
Power-On Self-Test
fails. Only Alarm LED
is on after power-on.
The unit has detected an
internal hardware failure.
Reset the unit and try again.
Contact your service
representative.