Service manual

Chapter 12
12-6
12.5 ADF
12.5.1 Outline
12.5.1.1 Items of Adjustment
and Sequence of Work
(ADF) 0006-4205
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.
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
12.5.1.2 Preparing a Test Sheet
for Adjustment 0007-7206
Preparing a Test Sheet: On a sheet of LTR paper, draw
straight lines as indicated:
F-12-6
12.5.2 Adjusting the Mechanical
System
12.5.2.1 Removing the Skew 0006-4209
Make a copy of the test sheet using the ADF in Direct,
and make sure that the skew is as indicated (following
table).
F-12-7
T-12-2
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.
Dimension
(using A4)
Dimension
(using LTR)
b-a 0 +/- 1.3 mm 0 +/- 1.3 mm
10mm
10mm
10mm
10mm
<Using LTR Paper>
Draw straight lines.
(feeding direction)
10mm
279mm
216mm
Copy of the test sheet
a
b
(feeding direction)