Canon iR2200 Service Handbook page 174

CHAPTER 5 SERVICE MODE
<ADJ-XY>
Use it to adjust the image read start position.
If you have cleared the RAM on the reader controller PCB and replaced the PCB, use it to
enter the settings indicated on the service label.
ADJ-X
Use it to adjust the scanner image leading edge (x direction).
Range of 250 to 290 ('1' being 0.1mm)
adjustment
Caution Be sure to execute it before adjusting the margin.
Do not use this mode to create a margin.
ADJ-Y
Use it to adjust the CCD read start position (X direction).
Range of 100 to 400 ('1' being 0.1 mm)
adjustment
5-46
Vertical side plate
Standard white plate
Lower setting
F05-401-03
Lower setting
Higher setting
Original
Vertical size plate
F05-401-04
COPIER>ADJUST>ADJ-XY
Copyboard glass
Higher setting
Read start position