Reversal Adf - Canon imageRUNNER ADVANCE 4551i Service Manual

3. If the height is not within the standard range, execute the following adjustments.
If the height is 19 cm or less: Turn the hexagon wrench counterclockwise.
NOTE:
Service Tool: Hexagon wrench (2.5 mm)
4. Check that the "height adjustment boss" does not contact with the Stream Reading Glass after adjustment.

Reversal ADF

■ Overview
● Adjustment After Replacing the Parts
In case of removing the parts as shown below, adjust the following item.
Parts to replace
Motor/Other roller
● Adjustment
In case of removing this equipment and then re-installed, adjust it in order as shown below.
No.
1 Adjusting the Height
2 Adjusting the Perpendicularity
3 Adjusting the Reading Position
4 Adjusting the Magnification
5 Adjusting the Image Position (Horizontal Scanning Direction)
6 Adjusting the Image Position (Leading Edge)
7 Adjusting the White Level
● Preparation or Creation of Test Chart
Prepare a test chart. If there is no test chart, create a test chart.
Create a test chart that has a 10 mm smaller rectangle from the edge of A4 or LTR paper.
NOTE:
Be sure to write a character or mark to identify the printed image direction.
[1]
Adjustment item
Adjusting the Magnification
Adjustment item
310
5. Adjustment
Reference
"Adjusting the Magnification" on page 320
Reference
"Adjusting the Height" on page 311
"Adjusting the Perpendicularity" on page
315
"Adjusting the Reading Position" on page
319
"Adjusting the Magnification" on page 320
"Adjusting the Image Position (Main Scan-
ning Direction)" on page 321
"Adjusting the Image Position (Sub Scanning
Direction)" on page 322
"Adjusting the White Level" on page 323