I got a Color Laserwriter 12/600 on eBay. The previous owner know very little about it. When I print a page with color (or even a page of color bars), the color is very sharp and vivid on the entire page, except for two 1/2 bands running vertically on the page. Black toner sticks very well anywhere on the page.
What is wrong with it? I have tried putting in a new photoconductor, but no good. Is it my drum? or Fuser?
-Thomas