I have e barely used OKI C8600 color laser A3/A4 printer that I bought from a company a while back, they had only printed 70 pages since new. However when I looked closer on the machine when coming home, I saw that there was a lot of magenta toner spilled all over the inside of the printer, I vacuumed as much as I possibly could, but the printer still produces color prints with small magenta dots all over the prints, sometimes more and sometimes less. The black and white prints usually looks good, I have occasionally seen black and white prints with magenta dots in a line from side to side in the middle of a page.
A service guy I talked with said that it was impossible for him to say over phone, but that it could be the fuser that needed to be replaced. But I guess it could be one of the drums also, or maybe transferbelt or a LED strip?