Canon DADF-AA1, Service Manual

Page: 90 / 110

Chapter 5
5-4
5.3 Adjustment
5.3.1 Basic Adjustment
5.3.1.1 Outline
0024-7049
This machine has the following adjustment items. Carry out each adjustment
after replacing the relevant parts.
5.3.1.2 Adjusting the Height
0024-7050
1. Pre-check
Check whether the front and rear document glass spacers provided under
the bottom of the DADF are in close contact with the document glass
when the DADF is closed.
If visual check is difficult, perform the check with reference to the next
and subsequent pages.
F-5-5
2. Checking the left hinge height
1) Checking the rear-left height of the DADF
Set paper against the protrusions [1] of the stream reading glass in such a
manner that the seat [2] of the stream reading glass is nearly hidden.
F-5-6
2) Pulling out the set paper
Pull out the paper in the direction of the arrow to check that you feel slight
resistance.
F-5-7
No. Adjustment type Parts to replace Remarks
[1] Height adjustment Hinge
[2] Perpendicularity adjustment Hinge
[3] Reading position adjustment Platen roller
[4] Side registration adjustment -
During
installation only
[5]
Trailing edge registration
adjustment
-
During
installation only
[6] Magnification adjustment Motor/roller
[7] White level position adjustment Platen roller
CAUTION:
Carry out all the above adjustments after removing the ADF from the reader
unit.
MEMO:
Insert a sheet of paper between the DADF stream reading glass and the
document glass spacers (two) and pull out the sheet. It is recommended that
slight resistance is felt when pulling out the sheet.
CAUTION:
- Use plain paper.
CAUTION:
Set paper so that it does not reach the document reading area [3].
[1] [2] [3]
[1] [2] [3]
Paper