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Appendix A
Troubleshooting
n the event you encounter a problem using your Telenetics modem,
refer to the troubleshooting information in this appendix. To
troubleshoot the power supply and backplane on the Universal Data
Shelf, refer to the Telenetics RM16M Installation and Operation
Manual for the Universal Data Shelf version you have.
,
IMPORTANT
If you encounter a problem with your modem, be sure
the modem switches are set to the appropriate
positions. If a switch is halfway between an on and off
setting, the modem will not operate properly.
Problem Solving
Table A-1 offers troubleshooting solutions for modem problems.
Table A-1. Troubleshooting Suggestions
If… Perform These Procedures…
Modem does not respond and
all LEDs are off.
Check the Universal Data Shelf’s
power supply module(s).
Modem does not receive data,
and the
DCD
and
RxD
LEDs
are off.
The receive line pair may be
disconnected from the modem. Make
sure the transmission line connection
to the rear panel of the Universal Data
Shelf is accurate and secure.
The receive signal level may be below
the CD threshold. Set SW1-5 ON to
see whether configuring the modem
for a
−
43 dBm threshold resolves the
problem.
I