148 Chapter 9 Image quality
EN
• The toner cartridge is getting low on toner.
• The paper you are using does not meet HP paper specifications.
• The toner density setting is not adjusted correctly.
• The internal mirror or optics are contaminated.
• The laser scanner is damaged.
• The document scanner needs to be recalibrated.
• There is a problem in the contact image sensor.
• There is a problem in the formatter.
• 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.
• Locate the defective roller in the printer.
• There is dirt on the roller or the roller is defective.
• The toner cartridge is damaged.
• The rollers are dirty.
• The fusing assembly is defective or dirty.
• The gears are worn, causing slippage or jumping.
• The paper does not meet HP paper specifications
Print is faded or vertically aligned white steaks are
apparent
Random black spots
Repetitive defects
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