Stained Image (At Regular Intervals Of 63Mm) Due To Scratches On The Developing Upper/Lower Cylinder - Canon imageRUNNER ADVANCE 8500 series Troubleshooting Manual

Stained image (at regular intervals of 63mm) due to scratches on
the developing upper/lower cylinder
[Symptom]
Stain (at regular intervals of 63mm) [a] may appear on image when printing.
[Cause]
Scratches [a] on the developing upper/lower cylinder result in the aforementioned symptom.
[Service work]
Prepare and replace with a new developing assembly (FM4-5429-010).
[Attention] Be sure not to scratch on the developing upper/lower cylinder when opening the packing of the developing assembly.
[Service parts]
FM4-5429-010 Developing assembly
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