Canon imagerunner 1750i Starter Manual page 9

Attach the Duplex Tray
If you are attaching the optional Staple Finisher-H1 to the machine, the following steps are not
necessary. Go to the next section, "Install the Drum Unit. "
01
02
03
04
and the Tray Rib
Lift the control panel.
Attach the duplex tray by inserting its tabs
into the slots on the machine.
  B ecarefulnottoaccidentallyinsertthetabsintotheslot
circledintheillustration.
Insert the front tabs of the tray rib into the
slots first and then press down on its left
end so that the rear tabs snap into the slots.
Lower the control panel back in place.
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