Help with Xerox Colour 550

[eng_usama]

Hello guys problem with this machine there is black spots over the printed photo I replace dev tank drum change toner and no luck hope that you can help me thanks in advance 17278620080816017012906356576142.jpg 17278620080816017012906356576142.jpg

[xcopytech]

There is nvm changes for "oil spots" problem
If that do not help then change black developer hvps

Also check ibt belt for spots

[eng_usama]

Which nvm value you mean can you tell me please thanks

[eng_usama]

Can anyone please help me with this procedure to solve this issue?

[raomassaro]

When I had these spots, the problem were always bad toners

So I replace the toner, print a lot of copies to eliminate toner, and after 100 copies or so, the spots disappeared