Overview; Adjustment After Replacing The Parts; Adjustment; Preparation Or Creation Of Test Chart - Canon DADF-AV1 Service Manual

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.
Adjustment item
Adjusting the Magnification
Adjustment item
10 mm
10 mm
10 mm
69
Reference
"Adjusting the Magnification" on page 103
Reference
"Adjusting the Height" on page 70
"Adjusting the Perpendicularity" on page
74
"Adjusting the Reading Position" on page
78
"Adjusting the Magnification" on page 79
"Adjusting the Image Position (Main Scan-
ning Direction)" on page 80
"Adjusting the Image Position (Sub Scanning
Direction)" on page 81
"Adjusting the White Level" on page 82
10 mm
5. Adjustment