If its only in cyan like the picture shows, then its either a cyan drum or its the cyan 1st btr in the transfer belt.
Looks like it may have some fuser damage, so pull that out and take a look, replace if the spots can be seen on it. but it absolutely has a damaged Cyan drum. You can confirm by swapping the Cyan drum for either Yellow or Magenta and those spots should follow to whatever color you swap it to. But they are almost surely visable without swapping
Hi all. I purchased a second hand Workcentre 7855 and having a few quality issues. When I print I get marks across the print that look almost like overspray on an inkjet. I've tried cleaning but no improvement. Hoping someone can shed some light. Thanks in advance