Canon imageRUNNER ADVANCE C5255 Series Service Manual page 543

■ Grid (TYPE=6)
■ MCYBk horizontal stripe (TYPE=10)
4.0+1.5/-1.0mm
2.5 +1.5mm/-1.5mm
6
Troubleshooting > Test Print > How to use the test print > MCYBk horizontal stripe (TYPE=10)
This test print is for mainly checking the color displacement, right angle accuracy and straight line accuracy.
Check items
Uneven density
Black line (color line)
White line
F-6-3
This test print is for mainly checking the dark area density of each color, each color balance and white line on development.
Check items
Uneven density
Black line (color line)
White line
F-6-4
6 Troubleshooting > Test Print > How to use the test print > MCYBk horizontal stripe (TYPE=10)
Check method
Check that uneven density does not appear on solid area of
each color
Check that black line (color line) does not appear on solid area
of each color
Check that white line does not appear on solid area of each
color
Check method
Check that uneven density does not appear on solid area of
each color
Check that black line (color line) does not appear on solid area
of each color
Check that white line does not appear on solid area of each
color
6-5
Assumed cause
Failure of Laser Scanner Unit
Failure of developer in Developing Assembly
Failure of Primary Transfer Roller
Scratch on Photosensitive Drum
Dirt on Primary Charging Roller
Failure of ITB Unit
Failure of Secondary Transfer Outer Roller
Dirt on Laser Light Path
T-6-5
Assumed cause
Failure of Laser Scanner Unit
Failure of developer in Developing Assembly
Failure of Primary Transfer Roller
Scratch on Photosensitive Drum
Dirt on Primary Charging Roller
Failure of ITB Unit
Failure of Secondary Transfer Outer Roller
Dirt on Laser Light Path
T-6-6
6-5