Canon iR8500 Service Manual page 755

SERVICE MODE
COPIER>TEST
1 Grid (PG-TYPE1)
2 17-Gradation (with image correction; PG-TYPE2)
3 17-Gradation (without image correction; PG-TYPE3)
S-112
F00-206-02
F00-206-03
F00-206-04
COPYRIGHT© 2001 CANON INC.
Right Angles
displaced bema of laser light
Gradation
faulty laser system
Uneven density
primary charging assembly
faulty developing system
Gradation
faulty laser system
Uneven density
primary charging assembly
faulty developing system
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001