Brother MFC-3420C User Manual page 30

1
Unfold the ADF Document Support.
2
Fan the pages well and stagger them at an angle. Make sure
you put the documents face up, top edge first in the ADF until
you feel them touch the feed roller.
3
Adjust the paper guides to fit the width of your documents.
DO NOT pull on the document while it is feeding.
To use the ADF, we recommend that the scanner glass must be
empty.
Approx.10 mm Depth
LOADING DOCUMENTS AND PAPER 2 - 2
ADF Document
Support