Epson Expression 1680 - Manual (Page 92)

Options 4-23
Note:
For checks, move the left edge guide to the center until it stops, then
place your checks in the tray and move the right edge flush against
them.
2. Insert the document stack into the Automatic Document
Feeder until it meets resistance. Make sure that the side you
want to scan is facing up.
Note:
To avoid paper jams, be sure to remove all documents from the
Document Table before scanning.
Documents are fed into the lower tray after scanning is finished.