Service manual

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
13-10
2) Select 9.BOOK from service mode #6 SCANNER. Set 1 in 018.
3) Set the test chart you made on the copyboard glass with the image facing down.
Figure 13-113
4) Copy the image enlarged to 400%.
5) Measure the length of the leading and left edges of the copied image (see the figure
below).
Figure 13-114
6) Refer to Table 13-102. Work out the input value that corresponds to the measure-
ment taken in step 5.
7) Select 8. CCD from service mode #6 SCANNER. Enter the value worked out from
the leading edge data, 007, and the left edge data, 010 in step 6).
8) Select 9.BOOK from service mode #6 SCANNER. Set 1 in 018.
9) Exit service mode. Copy the image at 100%. Check that the copied image and the
original document positioning matches.
CARD
A3B4A4B5A5
A3
B5A5
CARD
A4
A4
B4
B5
A4
B5
A5
A5
Document
(Image facing down)
10mm
10mm
Left edge
Leading edge
Left edge
Leading edge
Output image (400% enlarged copy)
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