Canon imageRUNNER ADVANCE C350 series Service Manual page 518

■ MCYBk horizontal stripe (TYPE=10)
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 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
6
Troubleshooting > Test Print > How to use the test print > MCYBk horizontal stripe (TYPE=10)
2.5+1.5/-1.5mm
4.0+1.5/-1.0mm
Check method
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 ITB Unit
Failure of Secondary Transfer Outer Roller
Dirt on Laser Light Path
6 Troubleshooting > Test Print > How to use the test print > MCYBk horizontal stripe (TYPE=10)
F-6-4
Assumed cause
T-6-6
6-7
6-7