Hi,
In service manual (chapter 15, page 815) there is description about soiling in the form of a ring on prints.
On image sample there is magenta dot, but my machine also have problem with cyan and yellow.

I change switches that are mentioned to decrease developing bias but it didn't help.
Dots appear on every 5~8 pages. For example it could be 3 magenta dots, or 1 yellow or 4 cyan (the number always changes).

Machine have new starters C, M, Y, also new magenta developing assembly and new primary corona.
Could it be problem with developing rotary? I have no idea what to do next
Thanks for any help.
In service manual (chapter 15, page 815) there is description about soiling in the form of a ring on prints.
On image sample there is magenta dot, but my machine also have problem with cyan and yellow.

I change switches that are mentioned to decrease developing bias but it didn't help.
Dots appear on every 5~8 pages. For example it could be 3 magenta dots, or 1 yellow or 4 cyan (the number always changes).

Machine have new starters C, M, Y, also new magenta developing assembly and new primary corona.
Could it be problem with developing rotary? I have no idea what to do next

Thanks for any help.