Dark Spots Or Marks - Oki MPS930b Handy Reference

Troubleshooting
Print Problems (cont.)

Dark Spots or Marks

There are dark spots or marks that
appear in a random pattern on the
page.
• The paper path may be
contaminated with toner.
• The drum cartridge may be
defective.
• The fuser may be defective.
• The transfer roller may be
defective.
Unfused or Partially Fused
Image
The printed image is not fully fused to
the paper and easily rubs off.
• The paper may be damp.
• Heavy or unusual paper may be in
the tray.
• The printer may be located in an
environment with extreme
temperature or humidity.
• The fuser may be defective.
39 • English