Ricoh A151 Operating Instructions Manual page 85

You can insert one original at a time into the document feeder. The original
is automatically fed onto and removed from the exposure glass.
Correct any curl, fold, or crease
in the originals before setting.
Confirm that the Insert Originals
indicator is lit before setting.
Confirm that no previous originals
remain on the exposure glass or
in the document feeder.
Adjust the original guides to the
original size.
OPTIONAL DOCUMENT FEEDER
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