Canon DADF-R1, Service Manual

Page: 168 / 222

Chapter 5
5-20
<EX> If the copy paper stop position is displaced by
12 mm on the copyboard glass,
- Keeping the copy paper on the copyboard glass,
close the DADF.
- To change the stop position by 1 mm to the left,
press the push switch (SW4) twice (1/0.5=2), and
then press the push switch (SW2).
-> The copy paper will be discharged, and the
change will be saved.
8) Put the DIP switch (SW1) of the ADF controller
PCB back to its initial configuration, and mount
the ADF controller cover.
5.3.1.6 Horizontal Registration Adjustment
(Fine Adjustment)
0013-3802
In the case that the customer needs the adjustment
with high accuracy, perform the following step.
The horizontal registration adjustment (fine
adjustment) is executed to the following 2 occasions.
- Document tray pickup
- Manual feed tray pickup
When executing this adjustment, use the service
mode.
The adjustment value is stored in the DADF
controller PCB.
A. Document Tray Pickup
1) Set either one A4 document or LTR document [1]
on the document tray and execute copy.
F-5-78
2) Compare the document and the print image to
check that displacement of the horizontal
registration is 1 mm or less [A].
If the displacement is 1 mm or more, perform the
following step.
F-5-79
3) Display the service mode (COPIER > ADJUST >
ADJ-XY > ADJ-Y-DF) and change the setting
according to the displacement.
This setting adjusts the value of the horizontal
registration for the document tray pickup.
- Setting range: 1 to 211
- 1 unit: 0.1 mm
When the value is set larger, the margin is made
smaller. When the value is set smaller, the margin
is made larger.
F-5-80
4) Press the OK key.
5) Exit from the service mode.
6) Set either one A4 document or LTR document [1]
on the document tray and execute copy.
7) Compare the document and the print image to
check that displacement of the horizontal
registration is 1 mm or less.
B. Manual Feed Tray Pickup
1) Set either one A4 document or LTR document [2]
on the manual feed tray [1].
Insert the document to the rear end [3].
Feeding
direction
Set the value larger
Set the value smaller
Print image