Check magenta developer housing and IBT cleaner.
ange those two still having same issues plus black spot like waste toner on prints
these are two of the latest photos
It looks like the Magenta Ros (laser) window is dirty.
Already cleaned it but will try again
and the little waste toner dots, we found that some toner had spilled under the deverloper unit of the black developer we cleaned it was good for a while then started happening again
Cleaned the Ross (laser) units, all 4 in fact.
still same
take a look at the image
Got a teechnician come in and di a much better job
still a bit faded
How does one take out the Ross unit?
The tech will know how. Is not quiet simple but you can assist him. The laser units must be cleaned also inside, not just outside as I supposed you did it.
Good luck!
Gabi