Squareness Adjustment - Canon DADF-H1 Service Manual

1.1.2 Squareness adjustment

Verify the squareness of the optic system of
the host and the document feed direction of
this ADF, and adjust it as needed.
1) Create a test chart shown at right using
an A4 or LTR sheet of paper.
2) Set the test chart created in the docu-
ment tray and print it in equal size.
3) Superimpose the image produced in
Step 2) with the test chart to verify its
squareness.
A £ _ 1mm
B £ _ 1mm
Make this squareness check on
a line of the leading part of
scanning.
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-H1 REV.0 MAR. 2001
CHAPTER 5 TROUBLESHOOTING
10mm
Square
F05-101-03
Feed
direction
Another
sheet
Paper produced in Step 2
Feed
direction
Another
sheet
Paper produced in Step 2
F05-101-04
10mm
5-3