Lexmark M5163dn User Manual page 47

Loading paper and specialty media
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If you are loading envelopes, then make sure that the flap side is facing up and the envelopes are on
the left side of the tray.
•
Make sure the paper is below the solid line, which is the maximum paper fill indicator.
Warning—Potential Damage: Overfilling the tray can cause paper jams.
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