HP LaserJet 3100 All-in-One Printer series - Manual (Page 217)

216 9 Troubleshooting and Maintenance EN
Faxes you send or
copies are too
light. If you are faxing or copying a document
printed on colored paper there may not be
enough contrast between the ink and
paper colors. Adjust the contrast and resolution settings
from the control panel or the Document
Assistant. Also, if possible, use originals
printed with black ink on white paper.
Print is faded or
you notice a block
of vertically aligned
white streaks. The toner cartridge may be getting low on
toner.
The paper you are using may not meet
HP’s paper specifications (for example, it
may be too moist or too rough).
Toner density setting may need to be
adjusted.
A part of the HP LaserJet 3100 product
may be damaged.
See “Managing HP LaserJet toner
cartridges" in chapter 4.
Order HP’s paper specification guide. See
“Ordering parts” in this chapter.
Adjust the setting from the front panel.
Contact the Customer Service Center for
service. See the front of this manual for
support information.
Stains or smudges
appear as small,
round, black dots
on the front or
back of a page.
Sometimes
inconsistent stains
appear. The paper you are using may not meet
HP’s paper specifications (for example, it
may be too moist or too rough).
You may be printing on the wrong side of
the paper.
The HP LaserJet 3100 product may need
cleaning.
The toner cartridge may be damaged.
Order HP’s paper specification guide. See
“Ordering parts” in this chapter.
Remove the paper from the paper input
bin and turn it over. (The wrapper on
many reams of paper has an arrow
indicating the print side.)
See “Cleaning the scanner path” and
“Using a cleaning page” in this chapter.
See “Managing HP LaserJet toner
cartridges" in chapter 4. Replace the toner
cartridge if maintenance procedures do
not improve print quality.
Problem Cause Solution