ADTRAN TRACER 2xT1, User Manual

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TRACER 2xT1 User’s Manual
61280003L2-1B
Section 4 Troubleshooting
40
Preliminary
“AIS/YEL” indicator is flashing
This alarm is activated when the T1 interface at the remote end is not receiving a T1 signal (it is in Red
alarm). In this circumstance the interface with the flashing AIS/YEL indicator is transmitting an AIS
(keep alive) signal.
Recommended Action
Possible Cause (see list below)
• No DS1/DSX-1 signal or a degraded DS1/DSX-1 signal is present
at the DS1/DSX-1 input. ..........................................................................
1,2
• The connection at the T1 input or DS1/DSX-1 equipment is faulty. .......... 2
Recommended Actions:
1. Verify the presence of a DS1/DSX-1 signal at the T1 monitor jack using a T1 test set.
2. Verify that all cables and connectors are properly wired.
No “Power” Light
Recommended Action
Possible Cause (see list below)
• DC voltage is not applied. ..................................................................... 1,2,4
• The polarity of the power connection is reversed. ...................................... 2
• The AC transformer is not functioning properly. ..................................... 3,4
• The AC transformer is not connected to the DC jack on the BBP,
or not connected to AC outlet. ..................................................................
3,4
Recommended Actions:
1. Verify that the DC voltage is between 21-60 VDC (±).
2. Verify that negative voltage is applied to the negative terminal, and positive voltage applied
to the positive terminal.
3. Verify that the “Power” light is lit on the AC transformer.
4. Verify that the AC transformer is connected to an AC power cord on the transformer, and
connected to the DC jack on the BBP. Verify that the AC power cord is connected to an AC
outlet. Verify that the AC outlet has proper AC voltage present.
I M P O R T A N T
If problems persist after you have followed the Recommended Actions, contact ADTRAN Technical
Support at (800) 726-8663.