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The back of the
printout is dirty
• The laser toner cartridge is dirty.
• The transfer roller inside the printer is dirty.
• The transfer voltage inside the printer is
abnormal.
• Clean the laser toner cartridge or
replace it with a new one.
• Clean the internal transfer
components of the printer.
• The laser toner cartridge is installed
incorrectly.
• The internal part of the laser toner
cartridge is damaged.
• Abnormal charge inside the printer; the
laser toner cartridge is not charged.
• Ensure to install the cartridge
correctly.
The toner does
not adhere to the
paper
• The print media that does not meet usage
specification, such as the media is damp or
too rough.
• The inside of the printer is dirty.
• The laser toner cartridge is damaged.
• The internal part of the printer is damaged.
• Please use the print media within
the specification range. If you use
special print media, please print with
the manual feeder tray.
• Clean the inside of the printer.
• The laser toner cartridge is incorrectly
installed.
• The laser toner cartridge might be
damaged.
• The internal part of the printer is damaged.
• Ensure to install the cartridge
correctly.
• The faults above can be mitigated by cleaning or replacing the cartridge. If the
problem persists, please contact the customer service center. See the Three
Guarantees certificate for contact details.