User`s guide

4. First, align the left side of the feeder tray with the bottom of
the printer (if you have the feeder in the correct position, the
left side is the side without the printed circuit board). Next,
swing the right side of the feeder into position. Be careful to
align the printed circuit board on the feeder properly with the
bottom of the printer. Attach the printed circuit board to the
connector in the printer by fitting the two projections at the top
and bottom of the printed circuit board into the corresponding
holes in the printer (fig. 4.4).
Fig. 4.4 Position Tray Feeder under Printer
Chapter 4
Using Optional Accessories 4-5