NEC 870 - SuperScript B/W Laser Printer Online User's Manual page 113

Toner Spots on Page
• Make sure the paper meets required
specifications.
• A recent paper jam may have contaminated
the paper path. Run 20 blank prints to help
clear the paper path.
• The Toner module may be damaged and need
replacing.
Chapter 9: Troubleshooting
Repeating Marks on Page
• The paper path may be contaminated. Open
the Top cover, remove the Toner module, and
check for loose pieces of paper jammed in the
paper path. Remove the paper and print
several blank sheets to help clear out the
contamination.
• The Toner module may be damaged.
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