Epson Y16499100301 User Manual

Once again, if any data received does nor march the data a

verify error occurs, and the computer reports the transmitted

and received data at the rime of the error.

If you have turned on DIP switch 4 on the back panel,

select option 12 to test the serial communications (RS-232C)

port. To perform the test you must insert a special loop-back
connector into the alternate serial port so that the computer

can check individual pins of the port. This test is identical to
the check for the primary serial port. For derails, see the

description of the Serial port (RS-232C) check above.

Use this option to check:

l

The operation of your printer in IBM-compatibility mode

l

The compatibility of your printer with the extended

character set your computer uses

l

The ability of your printer to produce dot graphics and
print images of the graphics screen.

When you select option 14 from the DEVICE LIST, you

see this prompt:

Is dot-matrix printer on-line (Y/N)?

Check that your printer is connected to the computer, and
that it is turned on, loaded with paper, and on-line. Press Y

and then 

Enter 

to continue, or press 

N 

and 

Enter 

to return to

the menu.

When you continue the test, the computer checks that the

printer is responding correctly. This test detects whether the
printer is off-line or whether an interface error exists. If no
errors occur, the computer sends a repeating sequence of ASCII

characters and dot graphics data to the printer until you press
any key.