Lexmark C910 User Reference Manual page 45

8
Press the paper tray button
The paper tray lowers to let you load up another 500 sheets of paper.
Note: If there is only a partial stack of paper in the tray, the paper low sensor will not allow
the tray to go down. Add more paper to lower the tray.
9
Place the paper against the paper guides with the print side up.
10
Repeat step 8 and step 9 until you have filled the tray or loaded the desired quantity.
11
Close the top cover.
Make sure the high capacity feeder is pushed completely against the printer.
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