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 GO 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.

88 Chapter 4 Problem Solving

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