HP M1522nf Service Manual - Page 185

Problem Unwanted lines appear on the copy. Cause Solution The flatbed scanner or the ADF glass might be dirty. Clean the flatbed scanner or the ADF glass. See Clean the flatbed scanner glass on page 30. The photosensitive drum inside the print Install a new HP print cartridge. See Print cartridge might have been scratched. cartridge on page 27. Black dots or streaks appear on the copy. Ink, glue, correction fluid, or an unwanted substance might be on the automatic document feeder (ADF) or flatbed scanner. Clean the flatbed scanner or the ADF glass. See Clean the flatbed scanner glass on page 30. Copies are too light or dark. The printer driver or product software settings might be incorrect. Verify that the quality settings are correct. See the product software Help for more information about changing the settings. Text is unclear. The printer driver or product software settings might be incorrect. Verify that the quality settings are correct. See the product software Help for more information about changing the settings. Media-handling problems Problem Poor print quality or toner adhesion Dropouts, jamming, or curl Excessive curl Jamming, damage to product Cause Solution The paper is too moist, too rough, too heavy or too smooth, or it is embossed or from a faulty paper lot. Try another kind of paper, between 100 and 250 Sheffield, 4% to 6% moisture content. The paper has been stored incorrectly. Store paper flat in its moisture-proof wrapping. The paper has variability from one side Turn the paper over. to the other. The paper is too moist, has the wrong grain direction, or is of short-grain construction Use long-grain paper. The paper varies from one side to the other. The paper has cutouts or perforations. Turn the stack over. Use paper that is free of cutouts or perforations. ENWW Copy problems 167