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Symptom: Repetitive horizontal dark streaks
There are black lines running across the page. For more information, see the Repeating defects section on page 5.
Symptom: Dark spots or marks
There are dark spots or marks on the page in a random pattern.
Symptom: Unfused or partially fused image
The printed image is not fully fused to the paper and easily rubs off.
Page 3 of 5
Possible causes and solutions:
• The paper path may be contaminated with toner. Print several blank sheets of paper
to remove the toner accumulations.
• The Print Cartridge may be defective or at the end of its life. Replace the Print Cartridge.
• The fuser may be defective. Replace the fuser (in the Maintenance Kit).
• The Transfer Roll may be defective. Replace the Transfer Roll (in the Maintenance Kit).
Possible causes and solutions:
• The paper path may be contaminated with toner. Print several blank sheets of paper to remove
the toner accumulations.
• The Print Cartridge may be defective. Replace the Print Cartridge.
• The fuser may be defective. Replace the fuser (in the Maintenance Kit).
• The Transfer Roll may be defective. Replace the Transfer Roll (in the Maintenance Kit).
Possible causes and solutions:
• The paper stock may be damp. Replace the paper stock.
• Heavy or unusual paper stock may be in the tray. Replace that paper with approved paper.
Make sure that the fuser temperature is set correctly for the paper type.
• The fuser may be defective. Replace the fuser (in the Maintenance Kit).
• Make sure that the printer is located in the recommended environment for temperature
(between 5 to 35 degrees C / 41 to 95 degrees F) and relative humidity (between 15 percent to
85 percent). Move the printer to a suitable area, away from air conditioning vents, open loading
docks, etc.
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