Non-Tested, Parts or Repair only. Commodore MPS-801 Dot Matrix Printer C64 C128 Powers On And Roll Rotates. I have not tested. It turns on and the ribbon goes back and forth, the roller nob rotates. The outside is discolored and in bad shape. The inside look much cleaner and seems to be in working order, but I cannot test this and do not have the commodore and connections to test. Sold As-Is.