4. Clean the printhead with a clean soft cloth, a cotton swab moistened with isopropyl alcohol, or a cleaning pen.
Printhead
5. Clean the platen roller with a clean soft cloth moistened with isopropyl alcohol or a cleaning pen. Turn the platen roller with your finger to clean the entire surface.
6. Clean the
Platen Roller
Sensor
7. Allow the printer to dry.
8. Reload the ribbon cassette and the supply.
9. Close the printer.
10. Turn on the printer and press 
to advance the supply.