Canon ImageCLASS MF4690, Service Manual

Page: 158 / 182

Chapter 14
14-18
If any operation error occurs after changing the setting value, change the setting value to the original one.
14.6.2 <031Vertical scan start position adjustment>
0016-2075
Adjust the position at which vertical scanning of a book starts. The larger the adjustment value, the narrower the left-side margin of the image becomes.
14.6.3 <033Vertical scan magnification correction>
0016-2077
Correct the magnification of vertical scanning of a book. The larger the adjustment value, the more the image stretches in the vertical scanning direction.
14.6.4 <035: - 036:Reader motor speed change>
0016-2078
Though no market adjustment work needs to be carried out, enter factory defaults at image processor PCB replacement.
14.6.5 <041: Vertical scan start position adjustment (when scanning on a document fed from ADF)>
0016-2079
Adjust the position at which vertical scanning of a document fed from the ADF starts. The larger the adjustment value, the narrower the left-side margin of the
image becomes.
14.6.6 <047: Vertical scan magnification correction (when scanning on a document fed from ADF)>
0016-2081
Correct the magnification of vertical scanning of a document fed from the ADF. The larger the adjustment value, the more the image stretches in the vertical scan-
ning direction.
14.6.7 <048: Horizontal scan magnification correction (when scanning on a document fed from ADF)>
0016-2082
Correct the magnification of horizontal scanning of a document fed from the ADF. The smaller the adjustment value, the more the image stretches in the horizontal
scanning direction.
This menu is used to adjust the ADF feed motor speed. If you changed the adjustment value in this mode, the adjustment value selected for SCAN NUMERIC>54
must also be incremented/decremented by the same amount.
Do not change the adjustment value extremely.
026: Distance from the standby position of CIS to the
shading start point. 10 6-48 one unit=0.1mm
027: - 030: Not used
031: Vertical scan start position adjustment 0 0-70 one unit=0.1mm
032: Not used
033: Vertical scan magnification correction 32 0-64 one unit=0.1%
034: Not used
035: - 036: Reader motor speed adjustment 423
037: - 040: Not used
041: Vertical scan start position adjustment (scanning
on ADF) 0 0-70 one unit=0.1mm
042: - 046: Not used
047: Vertical scan magnification correction (scanning
on ADF) 32 0-64 one unit=0.1%
048: Horizontal scan magnification correction
(scanning on ADF) 32 0-64 one unit=0.1%
049: - 053: Not used
054: Pickup motor speed correction (when the ADF is
used) 32 0-64 one unit=0.1%
055: - 350: Not used
No. Function Default Setting range Unit