Canon imageRUNNER ADVANCE C3330 Series Troubleshooting Manual page 92

[Caution] Make sure to check that the safety cover[1] is located over the lever of Tray1 closing detect switch[2]. If it is located
different position, the Tray 1 closing detect switch[2] does not work correctly.
1-12) Reassemble the removed parts in reverse order from step 1-10).
2) For Staple/Booklet finisher-C1/J1/M1/U1
2-1) Open the front cover [1] and remove the clip [2].
2-2) Lift the front cover [1] to remove.
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