180 Chapter 9 Image quality EN
• Loose toner is in the printer.
• The toner cartridge is defective.
• The paper is too smooth.
• The driver setting for the paper type is wrong.
• The fuser is defective..
Print a configuration page, and refer to the color blocks at the bottom of
the page. Replace the toner cartridge of the color or colors that are
marbled.
Determine which toner color needs to be replaced by looking at the
secondary colors on the self-test page.
• If red and green are mottled, replace yellow.
• If red and blue are mottled, replace magenta.
• If green and blue are mottled, replace cyan.
• The paper you are using does not meet HP paper specifications.
• You are printing on the wrong side of the paper.
• The printer requires cleaning with a cleaning page.
• The toner cartridge is damaged.
• The imaging drum is damaged.
Loose toner
Mottled or marbled output
Random black spots
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