Epson equity y14499113001 Manuel D’Utilisation

Use the Parallel port (on video adapter) check to test the functions of the

primary port. This tests either the built-in port, if it is set up to act as the

primary port, or the parallel port on a monochrome adapter (such as the
IBM monochrome display and printer adapter) if you have one installed in

your computer.

To perform the test, you must insert the special loop-back connector into

the parallel port so that the computer can check individual pins of the port.

This test is identical to the Parallel port check. For more details, refer to the

description of the Parallel port (printer interface) check above.

Use this option to test the functions of the primary serial communi-

cations (RS-232C) port. To perform the test, you must insert a special

loop-back connector into the RS-232C port so that the computer can check

individual pins of the port. Contact your dealer if you need a loop-back

connector. Note that a different connector is required to test the parallel
port.

‘When you select option 11 from the DEVICE LIST, you see these

prompts:

Attach loop-back connector to serial port.

Enter Y to start this check when connector is

attached, or

Enter N to return to the menu.

Insert the loop-back connector. Then press Y and 

to start the check.

First, the computer checks the serial port control lines to see that they

are able to change from high to low and vice versa. No messages are dis-

played during this part of the test unless an error occurs.

The second test is an echo back check during which the port sends data

to itself in a fixed data format, at all the possible baud rates. When this test

begins, you see these messages:

 echo back check - at various baud rates

Current baud rate is 75
Current test data is 

5-22