Dell B2375dfw Dell Mono MFP User's Guide - Page 332
AaBbCc, White Spots, Vertical lines, Gray background
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Condition White Spots Vertical lines AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc Gray background AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc Toner smear Suggested solutions White spots appears 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. Contact a service representative. • The paper path may need cleaning. Contact a service representative. • If black vertical streaks appear on the page, the drum inside the toner cartridge has probably been scratched. Install a new toner cartridge. See "Replacing the Toner Cartridge". • If white vertical streaks appear on the page, the surface of the LSU part inside the printer may be dirty. Clean the LSU (see "Cleaning the Interior"). If the amount of background shading becomes unacceptable: • Change to lighter weight pages. See "Identifying Print Media Sources and Specifications". • Check the printer's environment; very dry (low humidity) or high humidity (higher than 80% RH) conditions can increase the amount of background shading. • Remove the old toner cartridge and install a new one. See "Replacing the Toner Cartridge". • Clean the inside of the printer. See "Cleaning the Interior". • Check the paper type and quality. See "Identifying Print Media Sources and Specifications". • Remove the toner cartridge and install a new one. See "Replacing the Toner Cartridge". - 331