Canon imageRUNNER ADVANCE 4551i Service Manual page 335

2. Change the value as gap A in the figure.
• If the image is displaced to the rear: Increase the value. (The image shifts to the front.)
• If the image is displaced to the front: Decrease the value. (The image shifts to the rear.)
Setting Value; 1=0.1mm
3. When the setting value was changed in step 2, write down the new numerical value in the service label.
NOTE:
The service label affixed to the back of Reader Front Cover.
● Adjusting the Image Position (Sub Scanning Direction)
1. Copy the test chart with the DADF.
2. Compare the leading edge registration between the copy and the test chart. As necessary, make the following
adjustment.
Adjustment Procedure
1. Select the following item in the service mode.
(LV.1) FEEDER > ADJUST > DOCST
< If the image is displaced toward rear >
Rear side of
printed image
A
Feed direction
< If the image is displaced toward front >
Rear side of
test chart image
A
Feed direction
322
Rear side of
test chart image
Rear side of
printed image
5. Adjustment