Lexmark X500 - Color Misregistration; Light Colored Line, White Line, or Incorrectly Colored Line; Smeared Vertical Print

Replace the fuser if the defects occur every:
• 95 mm (3.74 in.)
• 128 mm (5.04 in.)
Color misregistration
ABCDEABCDE
ABCDE
ABCDE
Color has shifted outside of the appropriate area or has been superimposed over another color area.
• Remove and reinstall the toner cartridges.
• Remove and reinstall the photodeveloper cartridge.
Light colored line, white line, or incorrectly colored line
These are possible solutions. Try one or more of the following:
Clean the dust-proof glass
The dust-proof glass may be dirty.
Is a toner cartridge defective?
Replace the toner cartridge causing the line.
Is a photodeveloper cartridge defective?
Replace the photodeveloper cartridge.
Smeared vertical print
128