Vertical white lines
Possible cause Solution
1 The toner supply is low or the print cartridge is
defective.
1 Shake the print cartridge gently to redistribute the
toner.
2 If another print cartridge is available, try using
that one to see if the problem goes away.
3 Replace the print cartridge.
2 The laser path is dirty. Clean the laser path. Remove the laser/scanner
assembly (see
Laser/scanner) and check for dirt or
other obstructions in the beam path.
3 The fuser is defective. Replace the fuser. See Fuser.
4 The mirror in the laser/scanner is dirty. Replace the laser/scanner assembly. See Laser/
scanner.
Image-formation troubleshooting 381
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