I have three spots that print out in the same

Two things, you can open the flap and look at the drum, you can rotate by the gears and see if the marks are there, if not there, just open the rear door and lookat the fuser roller, you may have to cycle power to see all of the roller, otherwise you unplug machine when paper is partway thru and see if it's on the print before the fuser. Spots are either on the fuser or on the drum