Epson EW-M660FT Error OxF3 Epson EW-M660FT Error Code OxF3 Display on Printer: Description and Troubleshooting When you come across the error code OxF3 displayed on your Epson EW-M660FT printer, it indicates a problem related to the PF PID reverse, encoder failure, tooth skip or improper tension of the timing belt, paper jam, motor driver failure,…