Epson TM-U220II - 4.4 Printer Stops Printing; Printer Repeats Printing on a Line; 4.5 Printer prints “?“ or Incorrect Data With Serial Interface

4-4 Troubleshooting Rev. A
1. Open the roll paper cover, and remove the jammed object if there is one.
2. Turn off the printer, and close the roll paper cover, and turn it back on. Then the cutter blade
returns to the normal position. If you would like not to turn off the printer, send an error
recovery command and initialize printer command instead.
3. If the cutter blade doesn’t return to the normal position, return the cutter blade to the normal
position by rotating the autocutter knob in the direction of the arrow. When it is returned to
the normal position, a lever comes into the center of hole in the autocutter frame.
4. Close the roll paper cover.
4.4 Printer Stops Printing / Printer Repeats Printing on a Line
The printer may not operate correction if not using PS-190, PS-180, or AC adapter C1. Check that
a correct power supply unit is connected to the printer.
4.5 Printer prints “?“ or Incorrect Data With Serial Interface
If one of the following errors occurs during serial interface communication, the printer prints “?”
or ignores the data, depending on the setting of DIP switch 1-1.
Autocutter unit
Lever
Hole
Knob