Omron NT31 Operation Manuals page 252

System Maintenance
S While data is being sent to the printer, the message "Checking Now..." is dis-
played.
S When the sending of data to the printer is completed, "Finished Normal by
"Printer Interface Check" is displayed.
S If data does not reach the printer within 60 seconds after sending starts, the
message 'Finished Printer output failed' is displayed.
After confirming the result of the check, press "Quit". The NT31/NT31C returns to
the "I/F CHECK MENU" screen.
Select "I/F Check".
Select "Printer".
Confirm that a printer is connected to the
NT31/NT31C, then press "Execute": "Printer
Interface Check" will be printed out at the
printer.
Section 6-11
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