Repeating Bands, Lines, Marks, or Spots
This is usually caused by a damaged roller. In some instances, the spots may be dark
instead of white and are repeated.
Initial Actions to Perform
■ Perform Initial Actions from Maintenance Procedures in Chapter 1.
■ Verify the media used is supported by this printer.
■ Verify the media settings are correct at the Control Panel.
■ Print the ID Check Pattern (Reports – Print – ID Check Pattern) and
Demo page (Reports – Information – Demo Page) to see if it is an application problem.
■ Perform isolation Test Prints form Section 2.7.3.
■ Run the Density Error Correction Test in Section 2.7.5.
Areas of the Printer that Apply
■ Imaging Unit
■ Fuser
■ Transfer Unit
Troubleshooting Steps
Repeating Defects Spacing
Component Defect Spacing Defect Location
Imaging Drum 94.3 mm Imaging Unit
Developer Roller 39.7 mm Imaging Unit
Charge Roller 37.7 mm Imaging Unit
Supply Roller 58.4 mm Imaging Unit
Fuser Belt 125.5 mm Fuser
Heat Roller 87.7 mm Fuser
Transfer Roller 50.3 mm Transfer Unit
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