Standards And Adjustments; Image Adjustment - Canon GP335 Service Manual

II. STANDARDS AND
ADJUSTMENTS
A. Image Adjustment
Adjust the image margin, and then the
non-image width.
Adjusting the Image Leading Edge
Margin and the Non-Image Width
a. Change the following settings in service
mode so that they are as indicated on the
service label.
• ADJUST>ADJ-XY>ADJ-X, ADJ-Y
• ADJUST>FEED-ADJ>REGIST
b. Adjusting the Image Margin
1) Put A4 or A3 paper in the cassette, and
select the cassette.
2) Select '6' in service mode (TEST>PG>
TYPE), and generate a solid black copy.
3) Make adjustments so that the margin is
2.5 ±1.5 mm.
<Main Scanning Direction>
Use the horizontal registration mount.
(See A-2.)
<Sub Scanning Direction>
Use service mode (ADJUST>FEED-
ADJ>REGIST; see A-1).
c. Adjusting the Non-Image Width
1) Select the cassette used for adjusting the
image margin, and make a copy of the
NA-3 Chart.
Caution:
Be sure that the NA-3 is placed on the
copyboard glass correctly.
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 14 TROUBLESHOOTING
2) Make adjustments so that the leading edge
and left/right non-image widths are 2.5
mm.
<Main Scanning Direction>
ADJUST>ADJ-XY>ADJ-Y
<Sub Scanning Direction>
ADJUST>ADJ-XY>ADJ-X
14-5