HP 3390 Service Manual - Page 249
Media-handling problems, grain direction, or is of short-grain
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Problem Cause Solution The photosensitive drum inside the print Install a new HP print cartridge. See cartridge might have been scratched. Remove the print cartridge on page 113. 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 all-in-one. See Cleaning the all-in-one on page 56. Copies are too light or dark. The printer driver or all-in-one software Verify that the quality settings are settings might be incorrect. correct. See the all-in-one software Help for more information about changing the settings. Text is unclear. The printer driver or all-in-one software Verify that the quality settings are settings might be incorrect. correct. See the all-in-one 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 all-in-one Problems with feeding 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 Open the rear output bin, or use longgrain paper. The paper varies from one side to the other. Turn the stack over. The paper has cutouts or perforations. The paper has ragged edges. The paper varies from side-to-side. Use paper that is free of cutouts or perforations. Use high-quality paper that is made for laser printers. Turn the paper over. The paper is too moist, too rough, too Try another kind of paper, between 100 heavy or too smooth, has the wrong grain and 250 Sheffield, 4% to 6% moisture direction, or is of short-grain construction content. ENWW Copy problems 227