Canon iR1200 Series, Service Manual

Page: 332 / 494

Chapter 12
12-6
12.5 ADF
12.5.1 Outline
12.5.1.1 Items of Adjustment
and Sequence of Work
0006-3197
The ADF must be adjusted for the following items and
in the following sequence of work:
1. If you have replaced major parts of the ADF, you
must always execute the following: registration
arch auto adjustment, original read position
adjustment. Then, check to make sure that the
settings of other items of adjustment are as
indicated; if not, make adjustments starting with the
preceding item of adjustment.
2. Each item of adjustment affects the subsequent
items of adjustment. If you have made adjustments,
therefore, be sure to check that the setting of the
item of adjustment that follows is also as indicated;
if not, be sure to start over with the preceding item.
T-12-3
12.5.1.2 Preparing a Test Sheet
for Adjustment
0006-3200
When making adjustments (except registration arch
auto adjustment and original read position
adjustment) for the ADF, you will need a test sheet
like the one used for the copier.
12.5.2
Adjusting the Mechanical
System
12.5.2.1 Removing the Skew
0006-3202
Make a copy of the test sheet using the ADF in Direct,
and make sure that the skew is as indicated following
illustrations.
F-12-8
b-a: 0 -/+1.3 mm (A4/LTR)
1) Open the ADF.
2) Loosen the 3 screws [1], and move the left hinge up
and down so that the skew will be as indicated by
referring to the index graduated at 1-mm intervals.
F-12-9
MEMO:
Sequence Item of adjustment
1 registration arch auto
adjustment
2 skew removal
3 original read position
adjustment
4 original feed speed
adjustment
5 leading edge read start
position adjustment
6 trailing edge read end
position adjustment
7 left/right registration
adjustment
Sequence Item of adjustment
Copy of the test sheet
a
b
(feeding direction)
[1]