Bizhub C253 Solid colour adjustment

[millcastleprint]

Can somebody please tell me how to do a solid colour adjustment for black and yellow as they are coming out patchy (white patches)

[Stirton.M]

Next time, try asking the question in the KM forum.

That said, replace the yellow and black IUs.

[millcastleprint]

Black and Yellow IU's replaced still have white lines?

[acusso1234]

Black and Yellow IU's replaced still have white lines?

Are you tech or end user?
If you are an end user, I want explain you that the location of IUs (imaging units) is under the toners. Are you sure that you have not changed toners instead of IUs??