Service manual

Problem Cause Solution
Unwanted lines or dots appear on
the copy.
The flatbed scanner might be dirty. Clean the flatbed scanner. See Clean the
flatbed scanner glass on page 28.
The photosensitive drum inside the print
cartridge might have been scratched.
Install a new HP print cartridge. See Print
cartridge on page 25.
Black dots or streaks appear on
the copy.
Ink, glue, correction fluid, or an unwanted
substance might be on the flatbed scanner.
Clean the flatbed scanner. See Clean the
flatbed scanner glass on page 28.
The power to the product might have
fluctuated.
Reprint the job.
Copies are too light or dark. The printer driver or product software
settings may be incorrect.
Verify that the quality settings are correct.
See the product software Help for more
information about changing the settings.
Text is unclear. The printer driver or product software
settings may be incorrect.
Verify that the quality settings are correct.
Verify that the EconoMode setting is off.
See the product software Help for more
information about changing the settings.
Media-handling problems
Problem Cause Solution
Poor print quality or toner
adhesion
The paper is too moist, too rough, too heavy
or too smooth, or it is embossed or from a
faulty paper lot.
Try another kind of paper, between 100 and
250 Sheffield, 4 to 6% moisture content.
Dropouts, jamming, or curl The paper has been stored incorrectly. Store paper flat in its moisture-proof
wrapping.
The paper has variability from one side to the
other.
Turn the paper over.
Excessive curl The paper is too moist, has the wrong grain
direction, or is of short-grain construction
Use long-grain paper.
The paper varies from side-to-side. Turn the paper over.
Jamming, damage to paper The paper has cutouts or perforations. Use paper that is free of cutouts or
perforations.
128 Chapter 6 Problem solve ENWW