Troubleshooting the Modem

Troubleshooting the Modem

Cannot call out or receive
calls.
• Make sure the phone line is clear and operable by calling out with
a telephone.
* Double check that the parameters for baud, parity stop bits,
etc.. have been set properly.
• Check that the COM ports
are matched between the hardware and the communications software
• Check
that you have the proper COM port number. DTR setting and interrupt level
settings.
* The software may not be functioning properly. Try it on another
computer If it does not work the software is your
‘suspect.
• Try another communications software on your computer
* Try taking out or disabling all other serial ports
to see if the problem is caused by a COM port. IRC) or DTR conflict.
• Try
your modem in another computer if it does not work there also, the modem is your
suspect and should be replaced.
• Try another modem in your computer:
Troubleshooting the Serial Mouse
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Serial mouse does not respond
• The COM settings
the DTR settings and possibly the interrupt settings need to be set properly on
the serial card Check with the manual to be sure you have the correct
settings.
Remove all other serial ports to be sure they are not conflicting
with the mouse.
* Try a different mouse on your computer. If it woks the original mouse is probably faulty and
needs to be replaced or repaired
*Try the mouse on another computer if it does not work the mouse is probably faulty and
needs to be replaced or repaired.
Troubleshooting the Printer
Serial printers can be very
problematic. They may require you to; get a special cable: redirect the
parameters from IPT I to COM I: and set the baud rate and parity to match
between the software and the printer. Check with the manufacturer or
documentation for the correct installation procedure. Also check the following
steps as for parallel printer problems.
*
With the parallel printer check the connection of the printer cable
to the printer and computer.