Canon imageRUNNER ADVANCE C3330 Series Service Manual page 416

NOTE:
Various settings can be configured in the following service mode.
• The print by developing color
COPIER > TEST > PG > COLOR-Y
COPIER > TEST > PG > COLOR-M
COPIER > TEST > PG > COLOR-C
COPIER > TEST > PG > COLOR-K
• The density of test print
COPIER > TEST > PG > DENS-Y
COPIER > TEST > PG > DENS-M
COPIER > TEST > PG > DENS-C
COPIER > TEST > PG > DENS-K
Check item
Transfer failure Check that the transfer failure does not appear on entire image.
Black line Check that black line does not appear on entire image.
(color line)
White line Check that white line does not appear on entire image.
Uneven pitch Check that uneven pitch does not appear on entire image.
Uneven density Check that uneven density does not appear on entire image.
■ Grid (TYPE=6)
This test print is for mainly checking the color displacement, right angle accuracy and straight line accuracy.
Check items
Uneven density Check that uneven density does not appear on solid area of each
color
Black line (color line) Check that black line (color line) does not appear on solid area of
each color
White line Check that white line does not appear on solid area of each color Failure of ITB Unit
Check method
Check method
404
6. Troubleshooting
Assumed cause
Failure of ITB (scratch, dirt)
Failure of Primary Transfer Roller (scratch, dirt)
Failure of Secondary Transfer Roller (scratch,
dirt)
Scratch on Photosensitive Drum
Dirt on Primary Charging Roller
Failure of ITB Unit
Failure of Secondary Transfer Outer Roller
Dirt on laser light path
Failure of Drum Unit
Dirt on Dustproof Glass
Deterioration of ITB
Assumed cause
Failure of Laser Scanner Unit
Failure of developer in Drum Unit
Failure of Primary Transfer Roller
Scratch on Photosensitive Drum
Dirt on Primary Charging Roller
Failure of Secondary Transfer Outer Roller
Dirt on Laser Light Path