HP LaserJet 4250 Service Manual - Page 397

Table 7-19 Print-quality image defects (continued) AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc See Table 7-32 White lines. See Table 7-33 Smudged lines (either direction). See Table 7-34 White spots on black. See Table 7-35 Scattered lines. See Table 7-36 Blurred print. See Table 7-39 Dark print. See Table 7-37 Black See Table 7-38 Blank page. page. Table 7-20 Light print (partial page) Possible cause The print cartridge is not installed correctly. The toner supply is low or the print cartridge developer is defective. Recommended action(s) Remove the print cartridge and then reinstall it. The top cover should close completely when the cartridge is fully seated. 1 Shake the print cartridge gently to redistribute the toner. 2 Replace the cartridge. The transfer roller is worn or contaminated or maintenance might be due. Print a supplies status page (seeSupplies status page) and look at the maintenance-kit gauge. If maintenance is due, install a maintenance kit. For information about ordering a maintenance kit, see chapter 8. Image-formation troubleshooting 383