HP N8400 manual Maintain the automatic document feeder ADF, Clean the paper path

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Chapter 4

3.Clean the glass by using a soft, lint-free cloth that has been sprayed with a mild glass cleaner.

CAUTION: Use only glass cleaner to clean the scanner glass. Avoid cleaners that contain abrasives, acetone, benzene, and carbon tetrachloride, all of which can damage the scanner glass. Avoid isopropyl alcohol because it can leave streaks on the glass.

Do not spray the glass cleaner directly on the glass. If too much glass cleaner is applied, the cleaner could leak under the glass and damage the scanner.

4.Dry the glass with a dry, soft, lint-free cloth.

5.When you have finished, reconnect the USB cable and power cable to the scanner.

NOTE: For instructions about how to clean the underside of the scanner glass, visit www.hp.com/support. Follow the online instructions to select your country/region and language, select the option to see support and troubleshooting information, and then enter the scanner product name and model number.

Maintain the automatic document feeder (ADF)

The ADF requires periodic maintenance depending on the amount of use and the type of paper that is fed through it. Use an HP paper-path cleaning cloth to clean the ADF when vertical streaks appear in images scanned by the ADF, when paper used in the ADF is dusty or dirty, or when the environment is dusty. If you use the ADF several times per week, monthly cleaning is recommended. Set up a cleaning routine that is appropriate for the scanner.

Use the following methods to maintain the ADF:

Clean the paper path

Clean the ADF window

Clean the feed roller

Replace the feed roller and separation pad

Clean the paper path

If scanned images have streaks or scratches, use the HP paper-path cleaning cloth to clean the paper path.

To order more HP paper-path cleaning cloths, go to www.hp.com/support. To clean the paper path, follow these steps:

1.Open the sealed HP paper-path cleaning cloth container, starting at the notch. Take care not to tear the cleaning cloth.

2.Remove the cleaning cloth and unfold it.

3.Place the unfolded cloth into the paper input tray.

4.Press the Tools () button on the scanner front panel to open the HP Scanner Tools Utility. Click the Maintenance tab.

18 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 buttonsHP Smart Document Scan Software Scanner lamp settingScanner software Scan Progress Window HP Document Copy UtilityHP Scanner Tools Utility 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 copying steps Scan and CopyBasic scanning steps Load paper into the document feeder Load originalsPlace an original on the scanner glass 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 profileClick Continue Assign profiles to quick start buttonsChoose profiles for display on the scanner front panel 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 will not turn on Scanner operation problemsScanner has stopped working correctly 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