[Misc] Help with iR-ADV 8205 dumping excessive toner

[QC91]

I need to get the forums advice, our 8205 keeps dumping excess toner with marks on the pages have cleaned and replaced a broken patch sensor but the toner marks come back after about 2000 pages I have listed all the parts we changed, I will attach a photo any help would be appreciated




FM3-7298-010 PATCH SENSOR ASS'Y / IR-ADV 8085/8095/8105/8205/8285/8505 SER UL


Canon FM4-5429-020 (FM4-5429-010) Developing Assembly


Canon FM3-7291-010 (FM3-7291-000) Drum Unit Holder Assembly

Vacuum machine,drum carriage. Calibrate machine CLEANING/LUBRICATION

IMG_20181228_095958.jpg