Canon F-1, Service Manual

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Adjustments > Adjustment Method > Right Angle Adjustment
Adjustments > Adjustment Method > Right Angle Adjustment
Right Angle Adjustment
Note:
There are 2 adjustment methods; for front side reading (reader side scanner unit) and
for back side reading (DADF side scanner unit).
1. Adjustment for front side reading
1) Set a test chart to DADF and make a 1-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
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3) Loosen the 2 knurled screws on front of right hinge unit.
4) Loosen the knurled screw at the left side of left hinge unit front part.
5) 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 (Loosen) Knurled screw (Loosen)
(RIGHT SIDE) (LEFT SIDE)
6) After adjustment, tighten the fixing nut and 3 knurled screws.
7) Printout a test chart again and check that angle A is right angle.
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