Canon Duplex Color B1, Service Manual

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Adjustment > Overview > Right Angle Adjustment
Adjustment > Overview > Right Angle Adjustment
3) Loosen the 2 knurled screws on front of right hinge unit.
4) Open the rubber cover on the back of right hinge unit and loosen the screw, and then make
an adjustment by the hexagon socket bolt.
If A is less than 90 deg, rotate it clockwise.
If A is more than 90 deg, rotate it counterclockwise.
Rubber cover
Hexagon socket bolt Fixing nut
Knurled screw
5) After adjustment, tighten the fixing nut and 2 knurled screws.
6) Printout a test chart again and check that angle A is right angle.
2. Adjustment for back side reading
1) Set a test chart to DADF upside down and make a 2-sided print.
2) Check the right angle accuracy of angle A on the printed paper. If it is not right angle, make
an adjustment.
Image on test chart
Printed image
Feed direction
3) Remove the front cover.
4) Loosen the adjustment screw.
5) Adjust the position of the guide that supports the scanner unit.
If A is less than 90 deg, move the guide to right direction (black arrow direction).
If A is more than 90 deg, move the guide to left direction (white arrow direction).
Adjusting screw
Guide
6) After adjustment, tighten the screw.
7) Printout a test chart again and check that it is right angle.