HP N8400 manual Clean the feed roller

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Chapter 4

4.Locate the clear scan window inside the ADF and clean it with an HP paper-path cleaning cloth.

5.Locate the white strip on the inside of the access door and clean it.

6.Replace the ADF access door:

a. Position the door over the ADF opening.

b. Press the door into place until it both sides click shut.

7.Clean the clear scanning strip on the scanner bed. Wipe the clear area with an HP paper-path cleaning cloth, or a clean, dry, lint-free cloth.

8.Close the scanner lid.

9.Use the ADF to scan up to five documents. View the results. If streaks still exist on the scanned images, call HP Customer Support.

Clean the feed roller

Clean the feed roller under either of the following conditions:

•Streaks on scans or paper jams occur repeatedly and cleaning the paper path does not help.

•The Feeder Maintenance section of the HP Scanner Tools Utility Maintenance tab indicates that maintenance is due.

To order more HP paper-path cleaning cloths or a feed roller replacement kit, go to www.hp.com/support.

20 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 scannerScanner front panel buttons Power Save buttonScanner hardware 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 User Guide Where to get additional informationSetup and Support Guide Click View or print guidesControl of the scanner buttons AccessibilityLCD Reader 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 Order maintenance and scanning supplies Care and maintenanceHP Scanner Tools Utility Maintenance tab 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 scans only one side of a double-sided Scanner lamp stays onScanner does not scan right away Scanned image is fuzzyScanner glass is dirty Scanned images are not straightVertical white stripes appear on the printed Scan files are too largeScanner buttons are not working correctly An unexpected program opens when a button is pressedWrong profile is used when a quick start button is pressed Buttons do not workPaper does not feed from the ADF Automatic document feeder ADF problemsPaper jamming, skewing, misfeeds, or multiple-page feeds Bottom of the scanned image is cut offClear jams from the ADF Scanned images have streaks or scratchesAn item loaded in the ADF jams repeatedly 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