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HP N8400 manual Chapter

Models: N8400

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Chapter 4

4.Inspect the separation pad that is located below the feed roller for wear and damage.

1New separation pad

2Worn separation pad

Damaged separation pad

NOTE: The feed roller replacement kit includes extra separation pads. If the separation pad shows wear between feed roller replacements, then replace the separation pad as described in the installation instructions that were included with the replacement kit.

5.Use an HP paper-path cleaning cloth to clean each of the feed roller pads and the separation pad.

NOTE: If you do not have an HP paper-path cleaning cloth, use a lint-free cloth that has been dampened with isopropyl alcohol.

6.Wipe the area around the small rubber pad to remove any paper dust.

7.Lower the green lever to return the feed roller to the working position.

22 Care and maintenance

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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 lamp setting Scanner softwareHP Smart Document Scan Software HP Document Copy Utility HP Scanner Tools 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 helpScan and Copy Basic scanning stepsBasic copying steps Load originals Place an original on the scanner glassLoad 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 profileAssign profiles to quick start buttons Choose profiles for display on the scanner front panelClick 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 operation problems Scanner has stopped working correctlyScanner 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