HP N8400 manual Remove the automatic document feeder from the scanner

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8.Close the ADF hatch, and then reconnect the USB cable and power cable to the scanner.

9.Press the Power switch to the on position, and then update the scanner maintenance history:

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

b. In the Feeder Maintenance section, click Record Cleaning. For more information, see the HP Scanner Tools Utility help.

Replace the feed roller and separation pad

Replace the feed roller under either of the following conditions:

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

The Feed Roller and Separation Pad Maintenance section of the HP Scanner Tools Utility Maintenance tab indicates that maintenance is due.

The feed roller replacement kit contains a feed roller, separation pads, and installation instructions. To order the replacement kit, go to www.hp.com/support.

To replace the feed roller and separation pad, follow these steps:

1.Press the Power switch to the off position, and then disconnect the USB cable and power cable from the scanner.

2.Open the ADF hatch, and then replace the feed roller and separation pad as described in the installation instructions that were included with the replacement kit.

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.

3.Close the ADF hatch, and then reconnect the USB cable and power cable to the scanner.

4.Press the Power switch to the on position, and then update the scanner maintenance history:

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

b. In the Feed Roller and Separation Pad Maintenance section, click Record Replacement.

For more information, see the HP Scanner Tools Utility help.

Remove the automatic document feeder from the scanner

If you need to remove the automatic document feeder (ADF) from the scanner, follow these steps:

1.Turn the thumbscrews on the connector until they are loose. Disconnect the accessory cable from the accessory cable port on the scanner.

2.Remove the ADF input tray.

Remove the automatic document feeder from the scanner

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Contents HP Scanjet N8400 series Trademark credits Copyright and licenseContents Advanced technical features TroubleshootingWhat you can do with the scanner Scanner overviewScanner hardware Power Save buttonScanner front panel buttons Quick start buttonsScan Document To buttons Copy buttonsScanner software Scanner lamp settingHP Smart Document Scan Software HP Scanner Tools Utility HP Document Copy UtilityScan Progress Window Setup and Support Guide Where to get additional informationUser Guide Click View or print guidesLCD Reader AccessibilityControl 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 HP Smart Document Scan Software Scan from the scanner front panel buttonsScan with one button press Scan from other software programsSet up an HP Smart Document Scan Software profile Set up scan profilesChoose profiles for display on the scanner front panel Assign profiles to quick start buttonsClick Continue Import and export profiles HP Scanner Tools Utility Maintenance tab Care and maintenanceOrder maintenance and scanning supplies Clean the scanner glassMaintain the automatic document feeder ADF Clean the paper pathClean the ADF window Clean the feed roller Maintain the automatic document feeder ADF Chapter Replace the feed roller and separation pad Remove the automatic document feeder from the scannerChapter Scanner error messages TroubleshootingChapter Scanner does not start Scanner initialization or hardware problemsScanner has stopped working correctly Scanner operation problemsScanner will not turn on Scanner does not scan right away Scanner lamp stays onScanner scans only one side of a double-sided Scanned image is fuzzyVertical white stripes appear on the printed Scanned images are not straightScanner glass is dirty Scan files are too largeWrong profile is used when a quick start button is pressed An unexpected program opens when a button is pressedScanner buttons are not working correctly Buttons do not workPaper jamming, skewing, misfeeds, or multiple-page feeds Automatic document feeder ADF problemsPaper does not feed from the ADF Bottom of the scanned image is cut offAn item loaded in the ADF jams repeatedly Scanned images have streaks or scratchesClear jams from the ADF Clear a jam from the start of the paper pathChapter Clear a jam at the end of the paper path Remove a paper jam within the ADF Contact HP SupportLong pages Advanced technical featuresPage ADF Index