Canon DADF-N1, Service Manual

Page: 183 / 199

Chapter 4
4-20
for the horizontal registration; as
necessary, make the following
adjustments:
- if the image is displaced to the front,
decrease the setting.
- if the image is displaced to the rear,
increase the setting.
unit of adjustment: 0.1 mm
3) On the Service Mode screen, touch the
following notations to bring up the
Adjustment screen:
1 COPIER
2 ADJUST
3 ADJ-XY
4 ADJ-Y-DF
4.3.1.8 Adjusting the
Trailing Edge
Registration
0006-2355
1) Place the Test Chart in the DADF, and
make a copy.
2) Compare the copy against the Test Chart
for the trailing edge registration; as
necessary, make the following
adjustments:
- if the image is displaced to the leading
edge, decrease the setting.
- if the image is displaced to the trailing
edge, increase the setting.
unit of adjustment: 0.1 mm
3) On the Service Mode screen, touch the
following notations to bring up the
Adjustment screen:
1 FEEDER
2 ADJUST
3 DOCST
4.3.1.9 Adjusting the
White Level
0006-2356
MEMO
This is a new item of adjustment in which
the white level of images made in stream
reading mode are matched with the white
level of images made in copyboard cover
mode. If you omit this adjustment, the
following will likely occur:
- inappropriate reproduction of
background density in images made in
stream reading mode
- wrong speck detection in stream reading
mode
1) Place paper (of the type most often used
by the user) on the copyboard glass, and
close the DADF.
2) Touch the following notations in
sequence to bring up the Adjustment
screen:
1 COPIER
2 FUNCTION
3 CCD
3) Press [DF-WLVL1] to highlight.
4) Press [OK].
Automatic adjustment starts; if it ends
successfully, the screen shows [OK!].
5) Remove the paper from the copyboard
glass, and place it on the original tray of
the DADF.