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karimharaka
04-21-2020, 11:04 PM
i have konica minolta c452 which print dust. i have changed the laser bloc, transfert belt, controller board. imagine unit. all of these are not worked. ( i still do not replaced the graphique board!!) this is the last chance 45495
i need your help
thanks

GIUBOSS
04-22-2020, 02:27 PM
Which image units did you replace? Did you perform the calibrations at each replacement? Try to print from PC only in B / W

karimharaka
04-22-2020, 03:53 PM
i have another imagine unit which works will in other bizhubc652.
could someone send me firmware of bizhub c652 because i changed the main controler board PROBLEM C164

karimharaka@gmail.com

many thanks

Phil B.
04-22-2020, 04:53 PM
i have another imagine unit which works will in other bizhubc652.
could someone send me firmware of bizhub c652 because i changed the main controler board PROBLEM C164

karimharaka@gmail.com

many thanks

sounds like you rushed in your troubleshooting process. image problems CAN be some of the easiest fixes there are.

tsbservice
04-22-2020, 05:06 PM
Backgrond when copy or print or both?
Backgrond on color or B&W?
Backgrond has developer or not?
What's the color of backgrond?

From your small picture and incoherently description it's hard to help you.

emujo2
04-22-2020, 06:38 PM
I'm assuming by print dust he means background..Did you run the stabilzation, and gradation adjustments after replacing any of the items you mentioned? E

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