• Toner cartridge is not installed
properly.
• The developing unit of the
missing color is not installed
properly.
• Pull out the toner cartridge tray, remove
the toner cartridge, then insert the toner
cartridge, and insert the toner cartridge
tray.
• Please remove the developing unit of the
missing color and re-insert it.
• The toner cartridge is dirty or
leaks toner.
• The print media does not meet
the usage specification. For
example, the print media is
textured, damp, or too rough.
• The paper used has been
stored in the air for a prolonged
time.
• Toner cartridge is not installed
properly.
• The print mode is set
incorrectly.
• The paper path is dirty.
• If toner spots appear when
copying and scanning, the
platen glass may be dirty.
• The scanner is dirty or
damaged.
• Please contact the customer service
center.
• Please correctly use the medium
conforming to the specifications. See
Section 2.
• Keep the paper in its original wrapper
before use.
• Pull out the toner cartridge tray, remove
the toner cartridge, then insert the toner
cartridge, and insert the toner cartridge
tray.
• Please set another print mode.
• Clean the paper path.
• Clean the platen glass.
• The tray fails to load the media
properly.
• The paper used has been
stored in the air for a prolonged
time.
• Load correct paper. Please refer to
Section 2.4 for the way to load paper
correctly.
• Keep the paper in its original wrapper
before use.