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Chapter 4 Problem Solving 87
Vertical Lines
If black or white vertical streaks appear on the page:
! The photosensitive drum inside the toner cartridge has probably
been scratched or is worn out. Install a new HP toner cartridge.
Gray Background
If the amount of background toner shading becomes unacceptable,
the procedures described below may help to clear the condition:
! Decrease the density setting through the HP LaserJet Device
Configuration (Windows) or from the HP LaserJet Utility
(Macintosh). This will decrease the amount of background
shading.
! Change the paper to a lighter basis weight. See Media
Specifications.
! Check the printer’s environment; very dry (low humidity)
conditions can increase the amount of background shading.
! Install a new HP toner cartridge.
Toner Smear
! If toner smears appear on the leading edge of the paper, the
paper guides are dirty. See Internal Cleaning Procedure.
! Check the paper type and quality. See Media Specifications.
! Try installing a new HP toner cartridge.
Loose Toner
! Clean the inside of the printer. See Internal Cleaning Procedure.
! Check the paper type and quality. See Media Specifications.
! Try installing a new HP toner cartridge.
! In the printer driver, select the Paper tab and set Optimize for:
to match the type of paper you are printing. Print speed may be
slower if you are using heavy paper. For non-Windows operating
systems, this feature is also available in HP Web JetAdmin.
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