Troubleshooting - Oki Microline 3390 User Manual

Chapter 5: Printer Control
5-6
• The serial interface settings in the computer are defined with the
MODE command as follows:
MODE COM1: 9600,n,8,1,p
Please refer to the DOS manual for more information on the
MODE command.
• Notes and further information on the serial interface (wiring, pin
assignment, etc.) are to be found in the Interface Data appendix.

Troubleshooting

Should your printer not print under DOS when using a serial con-
nection, go through the following checklist:
1. Check whether there is a technical fault on the serial interface
(RS-232C). To do this, perform the test described in Appendix D.
2. Check the settings of the items in the printer menu which relate
to the serial interface. These settings must agree with the settings
in your system.
3. Make sure the serial interface is correctly set up under DOS.
4. Check the interface cable. With the multitude of cables available,
it is often difficult to find a cable suitable for your particular re-
quirements. The interface cable described in Appendix D can be
used both for transmission protocol X-ON/X-OFF and Ready/
Busy (Busy Line DTR).