Canon imageRUNNER ADVANCE 4551i Service Manual page 327

4. Pull out the set paper.
Pull out the paper in the direction of the arrow to check that slight resistance is felt.
Checking the Right Hinge Height
1. Be sure that the white plate is in close contact with the front and rear document glass when this Equipment is closed.
Order of Adjustment
When the front or rear side is floating:
1. Adjust the Left Hinge Height.
2. Adjust the Right Hinge Height.
3. Check the Left Hinge Height.
(Check the height of the Left Hinge. If the height is inappropriate, adjust it again.)
When both sides are floating:
1. Adjust the Left Hinge Height.
2. Adjust the Right Hinge Height.
3. Adjust the Left Hinge Height.
4. Check the Right Hinge Height.
(Check the height of the Right Hinge. If the height is inappropriate, adjust it again.)
NOTE:
Before adjusting the hinge height, remove the hinge covers. After the adjustment, attach the hinge covers.
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5. Adjustment