5 Troubleshooting

This section contains solutions for common problems with the scanner.

Scanner error messages

Scanner initialization or hardware problems

Scanner operation problems

Scanner buttons are not working correctly

Automatic document feeder (ADF) problems

Contact HP Support

For additional troubleshooting, see the help for the HP scanning program that you are using. For more information, see Where to get additional information.

Scanner error messages

The scanner displays status and error messages on the scanner front panel. For help responding to a scanner error message, see the appropriate topics below.

Scanner Error Message

ADF Jam – Input Tray

ADF Jam – Clean Out

ADF Jam – Output Tray

Hatch Open

Recovery Process

Clear the jammed paper from the automatic document feeder (ADF) input tray. For instructions, see Clear jams from the ADF in the Troubleshooting section.

Clear the jammed paper from the opening behind the ADF access door. For instructions, see Clear jams from the ADF in the Troubleshooting section.

Clear the jammed paper from the automatic document feeder (ADF) output tray. For instructions, see Clear jams from the ADF in the Troubleshooting section.

Close the automatic document feeder (ADF) hatch. Press down firmly on both sides until you hear a click.

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HP N8400 manual Troubleshooting, Scanner error messages