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Problem Cause Solution(s)
Horizontally
aligned black
streaks or
smears appear.
The toner cartridge may not be installed
properly.
The toner cartridge may be defective and
need replacing.
Printer may need repair.
Remove the cartridge and reinsert it. See
chapter 1, “Installing the HP LaserJet
Toner Cartridge” for installation
information.
The toner cartridge may still be under
warranty. See “HP LaserJet Toner
Cartridge Warranty”in appendix A.
See the support pages at the front of this
manual for support options.
Light character
shadows or
repetitive marks
appear on the
page.
The printer may need cleaning.
If you are using transparencies, they may
not meet HP’s specifications.
The paper’s texture may be too coarse.
The toner cartridge may be damaged,
causing a repetitive black flaw on every
printout.
The toner cartridge’s photosensitive
drum may have been overexposed to
bright light, causing repetitive defects
(usually a fuzzy black area).
See “Cleaning Your Printer” in this chapter.
For ordering information, see
“Accessories and Supplies Information”
in appendix A.
Try changing to a paper with a smoother
finish.
Replace the toner cartridge. See
“Accessories and Supplies Information”
in appendix A.
Replace the toner cartridge. See
“Accessories and Supplies Information”
in appendix A.
Vertical white
stripes appear
on the page.
The printer’s internal mirror is
contaminated.
Contact an authorized HP service
representative to replace the printer’s
internal mirror. See the support pages at
the front of this manual for support
options.
Character voids
appear (white
areas within the
parts of
characters that
should be solid
black).
If you are using transparencies, they may
not meet HP’s specifications.
You may be printing on the wrong
surface of the paper.
The paper may not meet HP’s
specifications.
HP’s LaserJet transparencies are
designed to minimize character voids.
For ordering information, see
“Accessories and Supplies Information”
in appendix A.
Remove the paper and turn it around.
(The wrapper on many reams of paper
has an arrow indicating the print side.)
Order HP’s paper specification guide
listed in “Accessories and Supplies
Information" in appendix A.
4-8 Troubleshooting EN