Lift the printhead actuator arm up to access the printhead.
Rub the cleaning pen across the dark area of the printhead. Make sure you clean from the middle to the outside. This moves adhesive transferred from the outer edges of media away from and outside the media path.
Wait one minute for the surface of the printhead to dry.
Release the printhead actuator arm, then push the ribbon drive transport into the printhead actuator arm.
The release arms snap into place, relinking the ribbon drive transport to the top cover and the printhead actuator arm.