Canon imageRUNNER ADVANCE C5500 Series, Service Manual, Page: 459 / 1331

■ MCYBk horizontal stripe (TYPE=10)
2.5 +1.5mm/-1.5mm
4.0+1.5/-1.0mm
This test print is for mainly checking the dark area density of each color, each color balance and white line on development.
Check items Check method Assumed cause
Uneven density Check that uneven density does not appear
on solid area of each color Failure of Laser Scanner Unit
Failure of developer in Developing Assem-
bly
Failure of Primary Transfer Roller
Black line (color line) Check that black line (color line) does not
appear on solid area of each color Scratch on Photosensitive Drum
Dirt on Primary Charging Roller
White line Check that white line does not appear on
solid area of each color Failure of ITB Unit
Failure of Secondary Transfer Outer Roller
Dirt on Laser Light Path
■ 64-gradations (TYPE=12)
This test print is for mainly checking the gradations of YMCBk single color at one time.
Check item Check method Assumed cause
Gradation Check that 64 gradations density is properly
reproduced. Failure of Drum Unit (end of life)
Failure of Laser Scanner Unit
Fogging Check that fogging appears on white image
area only. Failure of Drum Unit (end of life)
Failure of Laser Scanner Unit
6. Troubleshooting
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