Troubleshooting
B
When you have problems transmitting data (garbled data, intermittent er-
rors, etc.), there are
a
few checks you can make before taking the unit to
a
Radio Shack service technician:
Phone connection is clean and noise-free.
No
one is talking on the telephone line.
Phone and all extensions are on hook.
Baud rate is
300.
The only maintenance your Modem requires is a periodic checking of cables
and connections. When you experience data transfer problems, first check
the cable connections. Then run the self-test. If you still experience problems,
check with your Radio Shack Computer Center or store.
Precautions
It is very unlikely
...
but if your Modem causes problems on the phone line,
the telephone company has the right to temporarily discontinue your serv-
ice. If this happens, the telephone company will notify you and give you a
chance to have the problem corrected.
Also,
the telephone company has the
right
to
make changes in their lines and/or equipment. If these changes af-
fect your Modem or require changes in its connection, the phone company
will notify you in writing
so
that you can take the necessary steps to ensure
uninterrupted service.
Lightning.
Your Radio Shack phone product has built-in protection circuits
that meet or exceed FCC requirements to reduce risk or damage from surges
in telephone line current. However, an incident such as a lightning strike near,
or directly to, the telephone line may cause an excessive surge of voltage that
can damage the phone device. Lightning damage is uncommon, but can oc-
cur to the phone and other electronic devices. If you are concerned about
it or live in an area with frequent and/or severe electrical storms, it is sug-
gested that you unplug the electronic products during storms.
Analog
loop
self-test
When you cannot locate the source of your problem, test the Modem with
S16
=
1.
This test causes the data sent from your computer to be looped back
to the receiver, thus letting you know whether the Modem is functioning
properly. The analog loop self-test does not test nor analyze the condition
of
your telephone circuits.
37
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