Canon MF735C Series Service Manual page 216

● Rainbow chart (horizontal scanning direction) (TYPE=5, TYPE=8)
Check item
Color displacement Output the PG after performing color displacement correction,
and check the displacement for each color in the shaft direc-
tion.
● Color grid (TYPE=6, TYPE=9)
Check item
Color displacement Check that there is no displacement between the lines of the
respective colors.
Right angle accura- Check that there is nothing wrong with the right angle accuracy
cy and linearity and linearity between the lines of the respective colors.
Checking method
Checking method
207
Assumed cause
Soiling on the Color Displacement/Density Sensor
Cartridge error
ITB Unit error
Laser Scanner Unit error
Main Controller PCB error
Assumed cause
Laser Scanner Unit error
ITB Unit error
Soiling on the Registration Sensor
Secondary Transfer Roller error
Main Drive Unit (drum rotation) error
Laser Scanner Unit error
Registration Roller error
Secondary Transfer Roller error
7. Troubleshooting