Canon ImageRunner iR8500 Series Service Manual page 913

<ADJ-XY>
Sub-item
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
ADJ-Y
ADJ-S
ADJ-Y-DF
STRD_POS
T-17-57
COPIER > ADJUST > ADJ-XY
Adjusting the optical image head position (image read start position in the subscan
direction)
<Setting range> 250 to 290
Increasing the value by 1 shifts the image read start position 0.1 mm backward.
Horizontal size plate
Copyboard glass
Standard
white plate
Lower
Higher
value
value
Adjusting the CCD read start cell position (image read start position in the main scan
direction)
<Setting range> 100 to 400
Increasing the value by 1 shifts the image read start position 0.1 mm outward.
Lower value
Higher value
Original
Vertical size plate
Adjusting the optical shading measuring position
<Setting range> 16 to 128
Increasing the value by 1 shifts the shading measuring position 0.1 mm forward.
HP sensor
Vertical
size plate
Standard white plate
Lower value Higher value
Adjusting the main scan position at DF flow read
<Setting range> 100 to 400
Increasing the value by 1 shifts the image read start position 0.1 mm outward.
Print image
Lower value
Higher value
Feed
direction
Adjusting the CCD read start position at DF flow read
<Setting range> 0 to 60
Increasing the value by 1 shifts the image read start position 0.1 mm to left.
Description
Read start position
Copyboard glass
Chapter 17
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1
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