Lexmark C750 User Reference Manual page 24

5
Flex the sheets back and forth to loosen them, and then fan them.
Do not fold or crease the paper. Straighten the edges of the stack on a level surface.
6
Place the paper against the back left corner of the tray, print side down.
Do not load bent or wrinkled print media.
7
Close the tray.
Make sure the tray is pushed completely into the printer.
Note: Do not exceed the maximum stack height. Overfilling the tray may cause paper
jams.
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