HP Scanjet N8000 Scanjet N8400 User Guide - Page 4

Maintain the automatic document feeder (ADF 18 Clean the paper path...18 Clean the ADF window...19 Clean the feed roller...20 Replace the feed roller and separation pad 23 Remove the automatic document feeder from the scanner 23 5 Troubleshooting Scanner error messages...25 Scanner initialization or hardware problems 27 Scanner does not start...27 Scanner has stopped working correctly 28 Scanner operation problems...28 Scanner will not turn on...28 Scanner lamp stays on...29 Scanner does not scan right away 29 Scanner scans only one side of a double-sided page 29 Scanned image is fuzzy...29 Scanned pages are out of order at the scan destination 29 Scanner is scanning items very slowly 29 The image is completely black or completely white 29 Scanned images are not straight 30 Vertical white stripes appear on the printed page 30 Scanner glass is dirty...30 Scan files are too large...30 Scanner buttons are not working correctly 31 Buttons do not work...31 An unexpected program opens when a button is pressed 31 Wrong profile is used when a quick start button is pressed 31 Automatic document feeder (ADF) problems 32 Paper jamming, skewing, misfeeds, or multiple-page feeds 32 Paper does not feed from the ADF 32 The bottom of the scanned image is cut off 32 The scanned images have streaks or scratches 33 An item loaded in the ADF jams repeatedly 33 Clear jams from the ADF...33 Remove a paper jam within the ADF 36 Contact HP Support...36 6 Advanced technical features Long pages...37 Color dropout...37 Misfeed (Multipick) Detection...37 Index...39 2