HP LaserJet Pro M435 Multifunction Printer series - Manual (Page 31)

3. Adjust the paper length to the correct paper size.
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4. Load paper into the tray. Check the paper to
make sure the guides lightly touch the stack, but
do not bend the paper.
The way you should orient the paper in the tray
varies depending on the paper size. For
additional information, see Tray 3 paper
orientation on page 25 .
NOTE: To prevent jams, do not overfill the tray.
Be sure the top of the stack is below the tray full
indicator.
NOTE: If the tray is not adjusted correctly, an
error message might display during printing or
the paper might jam.
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ENWW Load Tray 3 (accessory) 23