Epson 4100 manual If YOU Cannot Make IT Work

Operator's Guide B-17

Since DTR and BUSY are logical opposites, you can change the polarity of DTR in the configuration menu. Under Interface Options/Serial Options, change “DTR Polarity” from “High” (factory default) to “Low.”

IF YOU CANNOT MAKE IT WORK

If your printer-to-computer serial interface is not working, try the following:

•Check your computer manual's explanation of its RS-232-C serial interface and compare that to the printer's requirements.

•Make sure the serial interface cable is wired properly for data transfer on Pins 2 and 3, and that the control signals are properly matched for handshaking. (This may require using a serial interface "break out" box.)

An intelligent serial interface cable, like a "breakout" box, is designed to make these checks for you and electronically route the necessary signals to the proper pins. (I.Q. Technology's Smart Cable is one of these.)

•Use well-shielded and grounded cables.

•Obtain support from your dealer.

Check the troubleshooting chart in this operator's guide, under "Communications" for additional assistance.