Brother HL-1800 series - Manual (Page 158)

CHAPTER 6 TROUBLESHOOTING
6-19
☛ ☛ ☛ ☛ 6.
Put the Duplex Tray and Paper Cassette back into the printer.
Fig. 6-18
✒ ✒ ✒ ✒ Note
• The JAM DUPLEX message appears if you remove a sheet of paper
from the Face Down Output Tray after only one side has printed.
• The paper sizes you can use for the Duplex Printing function are A4,
Letter and Legal.
• If the Paper Adjustment Lever for Duplex Printing is not set correctly for
the paper size, paper jams may occur and the printing will be out of
position on the page.