Duplo DF-920 Maintenance Manual page 30

2-5-5. Replacing the paper ejection outlet sensor
To detect jams in the paper ejection section, a transmissive sensor (paper ejection outlet sensor) is provided at the
main reinforcement base and stacker plate. To eliminate static electricity of the paper ejected, a static eliminator brush
(stainless fiber) is provided on the upper paper ejection guide.
Take note of the following points when replacing the paper ejection outlet sensor.
After replacing the paper ejection outlet sensor, check that one sheet of 52.4 g/m
properly.
To prevent accumulation of paper dust on the sensor surface, the paper ejection outlet sensor (light-receiving)
protection cover is pasted with a polyester film.
2-5-6. Cleaning the paper ejection outlet sensor
The power supply cover has a φ13 mm hole to simplify cleaning of accumulated paper dust, etc. by blowing an Air
Duster (a commercially available air spray for eliminating dust) from this hole. Remove folding plate 2, insert the spray
nozzle facing down at 5° into the cover hole and blow air.
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12H-M12M0-0309-0
2 (14 lb) paper is detected