Troubleshooting
Samsung Electronics Service Manual
7-7
7.4 Solving Print Quality Problems
Dirt inside of the printer or improper paper loading may reduce print quality. See the table below to troubleshoot
problems.
Light or faded print If a vertical white streak or faded area appears on the page:
The toner supply is low. You may be able to temporarily extend the toner cartridge life.
If this does not improve print quality, install a new toner cartridge.
The paper may not meet paper specifications (for example, the paper is too moist or too
rough).
A combination of faded or smeared defects may indicate that the printer needs cleaning.
Problem Solution
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Toner specks The paper may not meet specifications (for example, the paper is too moist or too rough).
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Dropouts If generally rounded, faded areas occur randomly on the page:
A single sheet of paper may be defective. T ry reprinting the job.
The moisture content of the paper is uneven or the paper has moist spots on its sur-
face. T ry a dif ferent brand of paper .
The paper lot is bad. The manufacturing process can cause some areas to reject toner.
T ry a different kind or brand of paper.
The toner cartridge may be defective. See "Vertical repetitive defects" on the next page.
If these steps do not correct the problems, contact a service representative.
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Vertical lines If black vertical streaks appear on the page:
A imaging unit has probably been scratched.
Remove the imaging unit and install a new one.
If white vertical lines appear on the page:
Clean the inside of the printer. If you still have the same problems, replace the imaging
unit with a new one.
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