Xerox Dc 252 issues

[George Labib]

Hi ..
I have an issue with my Xerox Dc252 machine on all on C M Y color only .. especially on halftones like banding in colorsI replaced Drums , Developer housing, Tranfer Belt assembly from another Machine that works fine and clean all ros assemblies inside and outside with no good result , what can i try to do ?? there is attached pics for the issues thanks alot

 

[MWI Print]

Did you solve it? You already tried everything I would have with the drums, transfer assembly, developer assemblies.
Was it a fuser causing a gear issue? Another gear issue? What was it?