HP LaserJet 6pmp Printer series - Manual (Page 86)

Toner Smear
If toner smears appear on the leading edge of the paper:
•
The paper guides are dirty. See page 4-8 for the internal cleaning
procedure.
If toner on the paper is loose or can be wiped off easily:
•
The fuser may be damaged. See an HP authorized dealer or service
representative (see page 6-4 for warranty options).
Background Gray Toner Shading
If the amount of background toner shading becomes unacceptable,
the procedures described below may help to clear the condition:
•
Increase the density setting (see page 4-2 to adjust print density).
This will decrease the amount of background shading.
•
Change the paper to a lighter basis weight. See Media
Specifications in Appendix B.
•
Check the printer’s environment; very dry (low humidity)
conditions can increase the amount of background shading.
•
Install a new toner cartridge.
Vertical Repetitive Defects
If marks repeatedly appear on the printed side of the page:
•
The toner cartridge is damaged. The circumference of the toner
cartridge drum is 3 inches (76 mm). If a repetitive mark occurs
every 3 inches (76 mm) on the page, install a new toner cartridge.
•
The transfer roller has toner on it. If the defects occur on the back
of the page, the problem will likely correct itself after a few more
pages.
Improperly Formed/Wavy Characters
If characters are improperly formed, producing hollow images:
•
The paper stock may be too slick. Try a different paper.
If characters are improperly formed, producing a wavy effect:
•
The laser scanner needs service. Call your authorized HP dealer or
HP service representative. (See page 6-4 for warranty options.)
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Problem Solving 5-9