Follow these steps.
1.
2.Click Serial and then specify whether your printer is connected to the printer port or modem port of your Macintosh.
If a printer error occurs while the StatusMonitor window is active, an error message appears. If an error occurs when the StatusMonitor window is inactive, an alert tone sounds and the StatusMonitor icon flashes at the top of the Applications menu. Pull down the Applications menu and select EPSON StatusMonitor to view the error message.