Troubleshooting Guide - Epson ESC/VP21 User Manual

5 - TROUBLESHOOTING GUIDE

This chapter describes common problems in the installation, configuration and
regular usage of your Fax/Data Modem. To test the Fax/Data Modem, a communi-
cation software package is needed and the package must include a mode that allows
you to operate your Fax/Data Modem by directly issuing internal commands to the
modem.
Follow the procedures in the following sections to resolve these common prob-
lems:
No
Response From Your Modem
1. If you are using the internal add-on card modems, make sure that the COM
port address you have set your modem to corresponds to the appropriate se-
lection in the communications software which you are using.
Issue the
2.
should be "0" or "OK' depending on what communications program you
are using. Your modem is OK if you get one of these responses. If there is no
response after issuing the ATZ<CR>, continue to the next step.
Check if there are any other interface cards in your computer that use the
3.
same COM port address as your modem. If so, you must set your modem to
another COM port address. (Keep in mind that on most systems, only two
COM ports are available. One of them must be used as either 1 or 3, while
the other must be used as 2 or 4.) For example, if a mouse is set to COM 1,
5 - TROUBLESHOOTING GUIDE
command to reset your modem. The returned result code
ATZ
63