Fujitsu FI-4860C Operator's Manual page 126

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 to release the safety lock, then lower the unit
carefully and push the unit to close it completely.
3-36 3.7 Cleaning the Sensors
Document width sensor(in 6 locations)
ADF upper sheet guide