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User’s Manual
7-8
7.5 Cleaning the Sensors
If the scanner sometimes fails to detect multi-feed via ultrasonic
sensors, it is possible that paper dust or dirt may be
accumulated on the surface on the ultrasonic sensors. Please
follow these steps to clean the sensors.
1. Open the front cover to the left.
2. Wet a clean cloth with some isopropyl alcohol. (95%)
3. Gently wipe the dirt and dust off the surface of the
ultrasonic sensors.
Ultrasonic Sensors
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