HP N8400 manual Troubleshooting, Advanced technical features

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

Image 4

Contents HP Scanjet N8400 series Copyright and license Trademark creditsContents Troubleshooting Advanced technical featuresScanner overview What you can do with the scannerPower Save button Scanner hardwareScanner front panel buttons Quick start buttonsCopy buttons Scan Document To buttonsScanner software Scanner lamp settingHP Smart Document Scan Software HP Scanner Tools Utility HP Document Copy UtilityScan Progress Window Where to get additional information Setup and Support GuideUser Guide Click View or print guidesAccessibility LCD ReaderControl of the scanner buttons HP Scanner Tools Utility helpBasic scanning steps Scan and CopyBasic copying steps Place an original on the scanner glass Load originalsLoad paper into the document feeder Scan from the scanner front panel buttons Scan from HP Smart Document Scan SoftwareScan from other software programs Scan with one button pressSet up scan profiles Set up an HP Smart Document Scan Software profileChoose profiles for display on the scanner front panel Assign profiles to quick start buttonsClick Continue Import and export profiles Care and maintenance HP Scanner Tools Utility Maintenance tabOrder maintenance and scanning supplies Clean the scanner glassClean the paper path Maintain the automatic document feeder ADFClean the ADF window Clean the feed roller Maintain the automatic document feeder ADF Chapter Remove the automatic document feeder from the scanner Replace the feed roller and separation padChapter Troubleshooting Scanner error messagesChapter Scanner initialization or hardware problems Scanner does not startScanner has stopped working correctly Scanner operation problemsScanner will not turn on Scanner lamp stays on Scanner does not scan right awayScanner scans only one side of a double-sided Scanned image is fuzzyScanned images are not straight Vertical white stripes appear on the printedScanner glass is dirty Scan files are too largeAn unexpected program opens when a button is pressed Wrong profile is used when a quick start button is pressedScanner buttons are not working correctly Buttons do not workAutomatic document feeder ADF problems Paper jamming, skewing, misfeeds, or multiple-page feedsPaper does not feed from the ADF Bottom of the scanned image is cut offScanned images have streaks or scratches An item loaded in the ADF jams repeatedlyClear jams from the ADF Clear a jam from the start of the paper pathChapter Clear a jam at the end of the paper path Contact HP Support Remove a paper jam within the ADFAdvanced technical features Long pagesPage Index ADF