222 Troubleshooting Q1860-90918
Table 53. White lines (opposite to the paper-path direction)
Possible cause Action
Damage to the print drum. Replace the toner cartridge.
Damage to fuser roller. Run a cleaning page through the printer (see page 67). If the problem
persists, replace the fuser.
Unstable laser beam or
beam control circuitry.
Replace the following in the order indicated:
1. Laser/scanner assembly.
2. Dc controller.
3. Cables between the dc controller and the laser/scanner.
4. Formatter.
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