Dell 2355 Mono Laser User Manual page 287

Condition
White Spots
Vertical lines
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
Gray background
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
Toner smear
286
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 "Paper 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 "Paper Specifications".
• Remove the toner cartridge and install a new one. See "Replacing the Toner Cartridge".