HP 4550 Service Manual - Page 255

Image defects Unless otherwise specified, all references in this section to horizontal or vertical directions of print quality problems refer to problems found on A-4 and Letter-sized media. For more information on a specific image defect, see the page numbers below each image in the following table. Table 7-7 Image defect table Background scatter2 (see page 254) Banding and horizontal lines2 Black lines (see page 254) (see page 255) Black or partially black pages (see page 255) No image available Blank or white page(s) (see page 256) Blank spots Character voids (see page 257) Distorted image (see page 257) Dropouts (see page 257) No image available Faded print, random faded areas (see page 258) Full page ghosting (see page 258) Gray background (see page 258) No image available Irregular raised spots or stray Light, dark, faded print toner 2 (see page 259) (see page 259) Light black or no black print Loose toner (see page 259) (see page 260) No image available Mottled or marbled output (see page 260) Random black spots (see page 260) No image available Sharkskin (see page 260) No image available Single color missing (see page 260) No image available Sunburn (see page 260) Toner smear (see page 261) Vertical lines or streaks (see page 261) Wavy characters (see page 262) C7085-90921 Chapter 7 Troubleshooting 253