[CQ] Black Banding on Bizhub - Please help!

[Guest]

Hi guys,

Please help, I am at a loss.. I have black banding on every copy and print on our bizhub C652.

(see attached image, which shows regular black banding on A4, about 4 cm apart, across the direction of print)

I have changed toner and IU and cleaned transfer belt with no luck.

Any help would be greatly appreciated.

Thanks.