Hi It's easy to check the paper out sensor. Just enter the menu and turn it off (OF, 0.1E,12.0E,1.1E). Just be sure there are paper in the embosser at all time. If it run correctly after the sensor is switch off, you will have to adjust or replace the sensor. OF, 0.1E,12.1E,1.1E turn it on again. This is if menu 1 is active. Rune