Epson 386/33 PLUS User Manual

Before running the test, be sure that the printer is on-line,

paper is loaded, and all connections are secure, or you may

see one of the following error messages:

Before running this test on your serial port, you must connect

a special RS-232C, AT-type loopback connector to the port.

This connector enables the test to send out data and receive

the same data back on one line. You can purchase the connector

from most electronic supply stores.

Be sure the connector is configured with the following

settings:

RD and TD shorted

DSR and DTR shorted

CTS and RTS shorted.

This test resets the computer to check for possible errors. Then

it checks the port by sending and receiving data and testing the

following port parameters:

9600 baud rate

 Oddparity

 2 stop bits

8-bit data length.