The Laser Scanner Unit or LSU is what writes to the surface of the drum. The glass above the cartridge inside the machine could be dirty try to clean it up. The mirror motor in the LSU could be bad or needing cleaned so it spins better. you may have to replace the glass as well.
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The Laser Scanner Unit or LSU is what writes to the surface of the drum. The glass above the cartridge inside the machine could be dirty try to clean it up. The mirror motor in the LSU could be bad or needing cleaned so it spins better. you may have to replace the glass as well.