Samsung SL-M5370LX User Manual Ver.1.0 (English) - Page 255

Solving other problems Condition White Spots Vertical lines Suggested Solutions If white spots appear on the page: • The paper is too rough and a lot of dirt from a paper falls to the inner devices within the machine, so the transfer roller may be dirty. Clean the inside of your machine. Cleaning the inside or contact a service representative. • The paper path may need cleaning. Cleaning the inside or contact a service representative. If black vertical streaks appear on the page: • The drum inside the printer has probably been scratched. Remove the imaging unit and install a new one. Contact a service representative. If white vertical streaks appear on the page: • The surface of the LSU part inside the machine may be dirty. Cleaning the inside or contact a service representative. If vertical streaks appear on the page: • The surface of the scanner glass and its white sheet may be dirty. Cleaning the inside or contact a service representative. Condition Color or Black background Suggested Solutions If the amount of background shading becomes unacceptable: • Change the image transfer belt if it has reached its lifespan. Contact a service representative. • Check the environmental conditions: very dry conditions (low humidity) 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. Toner smear If toner smears on the page: • Clean the inside of the machine. Cleaning the inside or contact a service representative. • Check the paper type and quality (see "Print media specifications" on page 285). • Remove the imaging unit and install a new one. Contact a service representative. • Change the image transfer belt if it has reached its lifespan. Contact a service representative. 9. Troubleshooting 255