Fujitsu fi-4860C Operator's Manual page 99

2. Pull the ADF release lever toward you and lift up the ADF sheet guide.
ADF release lever
3. Hold the ADF sheet guide with your hand to keep it open.
4. Wipe the six sensor surfaces with a clean lint free cloth moistened with
cleaner F1.
5. Lower the ADF upper sheet guide gently.
6. Lift the Upper transport unit fully to release the safety lock and then lower
the transport unit carefully.
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3.7 Cleaning the Sensors
Document width sensor(in 6 locations)
ADF upper sheet guide