6.Take one tall (or short) side guide, position the guide and hold it in place.
7.Continue to hold the side guide in place and turn the output tray over. Put the screws in place and tighten.
8.When finished with the first side guide, turn the tray back over and attach the other side guide; follow Steps 6 and 7.
9.Replace the end stop (short or tall as required).
10.Replace the output tray.
