Lexmark All in One Printer - Manual (Page 99)

99 Clearing Jams
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5 Open the upper front door of the printer.
6 Pull the envelope feeder up slightly and straight out of the
printer. Set it aside.
7 Pull the envelope straight out toward you.
N OTE : You may have to remove the print cartridge to
get the envelope out. See page page 93 for
instructions on reinstalling the print cartridge.
8 Align the tabs on the envelope feeder with the slots on both
sides of the printer and gently push the envelope feeder into
the opening until it snaps into place.
9 Close the upper front door of the printer.
10 Replace the stack of envelopes in the envelope feeder.
11 Adjust the envelope edge guide if needed.
12 Rotate the envelope weight and lower it to the stack.