751Printer did not sense a black mark when expected. For errors
752Printer sensed a mark in the wrong place.
753Printer sensed a mark that is too long.
754Check for a ribbon jam or remove any slack by turning the take- up reel clockwise.
755Printhead is open. Close the printhead before continuing.
756Load supplies.
757Load supplies (supply length mismatch),, because the calibrated supply length differs by plus or minus .25 inches from the format. Press FEED.
758Either the supply is not seen or the
763Waiting to dispense label. Press FEED.
765Printhead failure. Order a new printhead.
768Printhead has more than 10 bad dots or is not connected. Connect the printhead.
791The printer has an error pending. Turn off the printer. Wait 15 seconds and turn it back on. Resend the packets.