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SHM-B ASYNC
6. Troubleshooting Guide
The following information will help you troubleshoot
your installation if problems develop. If your particular
situation isn’t listed here, call Technical Support for
assistance. Have ready a description of the problem with
your installation, your DTE equipment make and
models, your equipment’s DTE/DCE configuration and
flow control type (hardware or software), your EIA-232
cable pinouts, and what (if anything) you have already
done to correct the situation.
SYMPTOM: LEDs do not light when power transformer
is plugged into a wall outlet.
1. Is the power connection loose? Try moving or
nudging the wall transformer.
2. Are there broken power leads? Disconnect the power
supply. Remove the printed circuit board from the
chassis. Inspect the three leads from the transformer
for continuity.
3. The SHM-B is defective.
4. SHM-B Async Card: Make certain that the SHM-B’s