Adjusting The Perpendicularity - Canon DADF-AV1 Service Manual

■ Adjusting the Left Hinge Height
1. Adjust the height with the left hinge height adjusting
screw.
CAUTION:
Loosen the lock nut before adjustment, and tighten it
after adjustment.
• If the front spacer is floating, turn the adjusting
screw clockwise to bring the front spacer closer to
the glass.
• If only the rear spacer or both front and rear spacers
are floating, turn the adjusting screw
counterclockwise to bring the rear spacer closer to
the glass.
Hinge height adjusting screw
■ Adjusting the Right Hinge Height
1. Adjust the height with the right hinge height
adjusting screw.
CAUTION:
Loosen the lock nut before adjustment, and tighten it
after adjustment.
• Turning the adjusting screw clockwise raises the
right side height of the DADF.
• Turning the adjusting screw counterclockwise
lowers the right side height of the DADF.
Hinge height adjusting screw
Lock nut
Lock nut
100

Adjusting the Perpendicularity

1. Copy the test chart with the DADF.
2. Check the perpendicularity at the leading edges of
the test chart and copy.
Measure dimensions A and B on the test chart and
dimensions A' and B' on the copy. If (A-B) is not same
as (A'-B'), go step 3 and following steps.
A
Feed direction
Feed direction
6. Installation
Test chart
B
A'
Copy
B'