Samsung ML-2955ND User Manual (user Manual) (ver.1.0) (English) - Page 202
Condition, Suggested Solutions
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Printing quality problems 6. Troubleshooting 112 Condition Vertical lines Black background Toner smear Suggested Solutions If black vertical streaks appear on the page: • The surface (drum part) of the toner cartridge inside the machine has probably been scratched. Remove the toner cartridge and install a new one. If white vertical streaks appear on the page: • The surface of the LSU part inside the machine may be dirty. Clean the inside of your machine. If these steps do not correct the problem, contact a service representative. If the amount of background shading becomes unacceptable: • Change to a lighter weight paper. • Check the environmental conditions: very dry conditions or a high level of humidity (higher than 80% RH) can increase the amount of background shading. • Remove the old toner cartridge and install a new one. • Thoroughly redistribute the toner (see Basic Guide). • Clean the inside of the machine. • Check the paper type and quality. • Remove the toner cartridge and install a new one.