Canon Additional Finisher Tray-A1 Installation Procedure page 18

Chapter 1
[2]
F-1-21
21) Mount the tray stopper removed at the step 7 using
a screw.
22) Connect the 2 connectors of the No. 1 tray to the
finisher controller PCB; then, fix the grounding wire
and the cable fixing plate using 2 screws.
23) Mount the additional finisher tray to the tray stay
of the No. 1 tray. Fit the additional finisher tray so that
the protrusion [1] found at the joint are in the hole [2]
of the rear tray stay; work as if to slide it from above
the front tray stay [3].
Be sure to push in the additional finisher tray until
the front tray stay locks into place (a click is heard).
10
[1]
24) Slide-in the slide guide from top, which is
contained in the carton box, to the finisher; then fix the
slide guide stopper removed at the step 6 in place
using a screw.
guide and the slide guide found on the finisher. The
slide guide to be used for the additional finisher tray
does not have a rib at the center. (On the other hand,
the one on the finisher has a rib.)
[2]
[1]
[2]
F-1-22
Pay attention not to confuse the included slide
[1]
[3]