88 Chapter 4 Problem Solving
EN
Vertical Repetitive Defects
If marks repeatedly appear on the printed side of the page at even
intervals:
! The toner cartridge may be damaged. The circumference of the
toner cartridge drum is 94 mm (3.7 in.). If a repetitive mark occurs
every 94 mm (3.7 in.) on the page, install a new HP toner
cartridge.
! Internal parts may have toner on them. If the defects occur on the
back of the page, the problem will likely correct itself after a few
more pages.
! In the printer driver, select the Paper tab and set Optimize for:
to match the type of paper you are printing. For non-Windows
operating systems, this feature is also available in
HP Web JetAdmin.
! The fusing assembly may be damaged. Contact an HP-approved
service technician. See HP Customer Care (Service and
Support) or Worldwide Sales and Service Offices.
Misformed Characters
! If characters are improperly formed, producing hollow images,
the paper may be too slick. Try a different paper type. See Media
Specifications.
! If characters are improperly formed, producing a wavy effect, the
laser scanner may need service. Verify that it also occurs on a
demo page by pressing G
O
when the printer is ready. If you
need service, contact an HP-authorized dealer or service
representative. See Hewlett-Packard Limited Warranty
Statement. See HP Customer Care (Service and Support),
or Worldwide Sales and Service Offices.
Page Skew
! Check the paper type and quality. See Media Specifications.
! Make sure the paper or other media is loaded correctly and that
the guides are not too tight or too loose against the paper stack.
See Loading Media into Tray 1, Loading Media into Tray 2 or
Optional 250-sheet Tray 3, or Loading Media into Optional 500-
sheet Tray 3.
