Canon CLC 1130, Service Manual

Page: 626 / 965

COPYRIGHT © 2002 CANON INC. CANON CLC1100/1130/1150/1160/1180 REV.2 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
13-57
CHAPTER 13 TROUBLESHOOTING
2. Horizontal Stripe Test Print (PG>TYPE=10, 16)
Use a horizontal test print to check the density of a dark area of each color, balance among
colors, and white lines in reference to development.
a.
Density of a Dark Area of Each Color and Balance of Colors
The density must not be appreciably low (light).
If the density is too low (light) for a single color, suspect a fault in the developing assembly of
that color.
If the density is too low (light) for all colors, suspect a fault in the laser system or transfer
system.
b. White Lines in Development
If white lines are noted in a cyan area only of the copy, suspect a fault in the cyan developing
assembly.
c. Uneven Density between Left and Right
If uneven density between left and right is noted for all colors in the same way, suspect a fault
in the height of the primary charging wire. If it is noted for a specific color only, suspect dirt on
the developing roll and butting block.
d. Left/Right Image Position
If the position of the cassette holder or ADJ-X, Y is wrong, the image position on the drum and
that of
paper will not match, eliminating the non-image width.
Such a condition can cause toner to fly astray, soiling the inside of the copier.
Figure 13-303
8 ± 1.5 mm
2 ± 1.5 mm