Epson Stylus 1520 User Manual page 66

8. Lower the output tray to the printing position. Make sure
that the rear edge guide of the paper tray is positioned
under the output tray. The rear edge guide must be under
the output tray to allow room for the paper loaded in the
sheet feeder.
Note:
If the rear edge guide is not positioned under the output tray, a
paper jam may occur.
For more about printing on special paper, see Chapter 7.
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Starting to Print with Windows