Canon imageRUNNER C1335 Series Service Manual page 339

5
Adjustment > Document Exposure System > Original Exposure and Feed System (Reader) > After Replacing the Scanner Unit (Reader side CIS)
10) Adjust the image position (vertical scanning direction) at copyboard reading.
1. Place a test chart on the Copyboard Glass, and make one single-sided copy.
2. Compare the image leading edge of the test chart with that of the copied paper, and
perform adjustment if necessary.
Feed direction
3. Press ADJ-X from the service mode screen.
COPIER > ADJUST > ADJ-XY >
4. Input value, and adjust an image.
• When a image is displaced toward the trailing edge: Decrease value
• When a image is displaced toward the leading edge: Increase value
• Adjustment unit: 0.1 mm
< When a copied image moves to the rear >
Test chart
Copy of the test chart
A
Leading edge Trailing edge
of the feeding of the feeding
direction direction
5. Write the new changed value in the service label.
6. Exit the service mode.
5 Adjustment > Document Exposure System > Original Exposure and Feed System (Reader) > After Replacing the Scanner Unit (Reader side CIS)
Copy of the test chart
F-5-14
ADJ-X
T-5-31
< When a copied image moves to the front >
Copy of the test chart
Test chart
A
Leading edge Trailing edge
of the feeding of the feeding
direction direction
11) Make a fine adjustment of image magnification ratio (vertical scanning direction) at
copyboard reading.
1. Set the image of the test chart upward in Copyboard Glass, and give one sheet of
single-sided copy.
2. Compare the image length of the feed direction of the test chart and the copy of the
test chart.
Carry out the following process when adjustment is necessary.
3. Press ADJ-X-MG from the service mode screen.
4. Input value, and adjust an image.
• When a copied image is enlarged: Increase value
• When a copied image is reduced: Decrease value
• Adjustment unit: 0.1 %
< When a copied image is long >
Test chart
A
Feed direction
5. Write the new changed value in the service label.
6. Exit the service mode.
12) Make a copy and check the copied image.
F-5-15
COPIER> ADJUST> ADJ-XY
ADJ-X-MG
T-5-32
< When a copied image is short >
Copy of the test chart
Copy of the test chart
Feed direction
5-9
Test chart
A
F-5-16
5-9