Canon ImageRunner iR8500 Series, Service Manual, Page: 913 / 1122

Chapter 17
17-69
<ADJ-XY>
T-17-57
COPIER > ADJUST > ADJ-XY
Sub-item Description Level
Adjusting the mage read start position
- If RAM on the reader controller circuit board has been cleared or the board itself has been replaced, enter the value
from the service label.
- If the setting of this item has been changed, enter the new value into the service label.
ADJ-X
Adjusting the optical image head position (image read start position in the subscan
direction)
1
<Setting range> 250 to 290
Increasing the value by 1 shifts the image read start position 0.1 mm backward.
ADJ-Y Adjusting the CCD read start cell position (image read start position in the main scan
direction)
1
<Setting range> 100 to 400
Increasing the value by 1 shifts the image read start position 0.1 mm outward.
ADJ-S Adjusting the optical shading measuring position
1
<Setting range> 16 to 128
Increasing the value by 1 shifts the shading measuring position 0.1 mm forward.
ADJ-Y-DF Adjusting the main scan position at DF flow read
1
<Setting range> 100 to 400
Increasing the value by 1 shifts the image read start position 0.1 mm outward.
STRD_POS Adjusting the CCD read start position at DF flow read
1
<Setting range> 0 to 60
Increasing the value by 1 shifts the image read start position 0.1 mm to left.
Horizontal size plate
Standard
white plate
Lower
value
Higher
value
Copyboard glass
Lower value
Higher value
Original
Vertical size plate
Read start position
Vertical
size plate
Standard white plate
Higher value Lower value
Copyboard glass
HP sensor
Feed
direction
Lower value
Higher value
Print image