Canon DADF-H1 Service Manual page 115

1.1.5 Scale adjustment
This adjustment adjusts the feed speed for a
document to regulate the image feed direc-
tion.
Two modes of adjustment available are:
• Adjusting from the host set in service
mode
• Adjusting from the ADF controller PCB
Adjustment would be easier to
carry out from the host set in
Memo
service mode.
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) Check to see if size A in the test chart
and size B in the image produced in
Step 2) comply with the following toler-
ances:
A £ _ 1mm
B £ _ 1mm
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-H1 REV.0 MAR. 2001
CHAPTER 5 TROUBLESHOOTING
10mm
Square
F05-101-10
Test chart
Feed
direction
Paper produced in Step 2
Test chart
Feed
direction
Paper produced in Step 2
F05-101-11
10mm
A
B
5-9