Canon imageRUNNER ADVANCE C3330 Series Troubleshooting Manual page 73

b) Check the front-left height.
b-1) Set paper [a] against the protrusions of the stream reading glass [b] in such a manner that the sheet of the stream reading
glass [c] is nearly hidden.
[Caution] Set paper so that it does not reach the document reader [d].
b-2) Pull out the set paper in the direction of the arrow to check that slight resistance is felt.
2) Adjust the height with the left hinge height adjusting screw [b].
- When the front-left side of ADF does not come in contact with the document glass, turn the adjusting screw clockwise.
- When the rear-left side or the both side of ADF do not come in contact with the document glass, turn the adjusting screw
counterclockwise.
[Caution] Loosen the lock nut [a] before adjustment, and tighten it after adjustment.
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