Paradyne 7610 User Manual page 60

Messages and Troubleshooting
8-6
Table 8-2. Troubleshooting (2 of 2)
Symptom Possible Cause
An LED is not lit. LED is burned out.
No power, or the The power cord is not
LEDs are not lit. securely plugged into the
wall receptacle and into the
rear panel connection.
The wall receptacle has no
power.
Not receiving data; DDS line rate/speed has
DSU is not changed.
responding.
Excessive BPVs causing
DSU to become stuck in
Autobaud mode.
Excessive Loop Loss
causing DSU to become
stuck in Autobaud mode.
Power-Up Self-Test The DSU has detected an
fails. Only Alarm internal hardware failure.
LED is on after
power-up.
November 1996
Solutions
Run the Lamp test. If the LED in
question does not flash with the
other LEDs, then contact your
service representative.
Check that the power cord is
securely attached at both ends.
Check the wall receptacle power
by plugging in some equipment
that is known to be working.
Check the circuit breaker.
Verify that your site is not on an
energy management program.
1. Verify that your subscriber loop is
running at 56 or 64 CC kbps.
2. If getting Excessive BPVs, verify
that you do not have a bad cable.
If the cable is good, contact the
network provider.
3. If getting excessive Loop Loss
(dB) indications, install a higher
quality cable. Refer to Model
7610 DSU LADS Connection 7610 DSU LADS Connection
Distances, Table 3, in the
Start-Up Instructions.
4. If the DDS Line Rate (Kbps) field
shows Autobaud, the DSU may
be stuck in Autobaud mode.
Configure Line Rate (Kbps) for
56 or 64 kbps.
5. Run Loopback tests. Refer to the
Tests Available section of
Chapter 7.
Reset the DSU and try again.
Contact your service
representative.
7610-A2-GB20-00