HP Color LaserJet 8500 Service Manual - Page 443

Image defects troubleshooting Image orientation Unless otherwise specified, all references in this section to horizontal or vertical directions of print-quality problems refer to problems found on letter- and A4-sized media. These media sizes are fed into the printer long edge first. Because media sizes other than letter or A4 are fed into the printer short edge first, the orientations of print quality problems differ from those on letter- or A4-sized media. Print quality problems that appear horizontally on a letter- or A4-sized page when it is held with the short edge up run vertically on other media sizes when the page is held with the short edge up. The same is true for a vertical defect on a letter- or A4- sized page; it will appear as a horizontal defect on other sizes of media. Figure 223 on the following page shows a print quality problem printed on both a letter- or A4-sized page and the same defect on an 11-by-17 inch or A3-sized page. EN Image defects troubleshooting 441