Konica Minolta Fujitsu Scanner - Manual (Page 114)

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3.5 Cleaning the Discharge Brush
9. Install the Guide plate in the reverse order of the removal. You should
push it down and rotate back then the installation can be done smoothly.
10. Lower the ADF upper sheet guide slowly.
11. Lift the Upper transport unit to release the safety lock, then lower the unit
carefully and push the unit to close it completely.