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HP Scanjet N8000 Scanjet N8400 User Guide - Page 24

have an HP paper-path cleaning cloth, use a lint-free cloth

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Chapter 4 4. Inspect the separation pad that is located below the feed roller for wear and damage. 1 New separation pad 2 Worn separation pad 3 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

Section	Page
Contents	3
Scanner overview	5
What you can do with the scanner	5
Scanner hardware	6
Scanner front panel buttons	6
Power Save button	6
Quick start buttons	6
Copy buttons	7
Scan Document To buttons	7
Tools button	8
Cancel button	8
Scanner lamp setting	8
Scanner software	8
HP Smart Document Scan Software	8
HP Document Copy Utility	9
HP Scanner Tools Utility	9
Where to get additional information	10
Accessibility	11
LCD Reader	11
Control of the scanner buttons	11
Scan and Copy	12
Basic scanning steps	12
Basic copying steps	12
Load originals	13
Place an original on the scanner glass	13
Load paper into the document feeder	13
Scan from the scanner front panel buttons	14
Scan from HP Smart Document Scan Software	14
Scan from other software programs	15
Scan with one button press	15
Set up scan profiles	16
Set up an HP Smart Document Scan Software profile	16
Assign profiles to quick start buttons	17
Choose profiles for display on the scanner front panel	17
Import and export profiles	18
Care and maintenance	19
HP Scanner Tools Utility Maintenance tab	19
Order maintenance and scanning supplies	19
Clean the scanner glass	19
Maintain the automatic document feeder (ADF)	20
Clean the paper path	20
Clean the ADF window	21
Clean the feed roller	22
Replace the feed roller and separation pad	25
Remove the automatic document feeder from the scanner	25
Troubleshooting	27
Scanner error messages	27
Scanner initialization or hardware problems	29
Scanner does not start	29
Scanner has stopped working correctly	30
Scanner operation problems	30
Scanner will not turn on	30
Scanner lamp stays on	31
Scanner does not scan right away	31
Scanner scans only one side of a double-sided page	31
Scanned image is fuzzy	31
Scanned pages are out of order at the scan destination	31
Scanner is scanning items very slowly	31
The image is completely black or completely white	31
Scanned images are not straight	32
Vertical white stripes appear on the printed page	32
Scanner glass is dirty	32
Scan files are too large	32
Scanner buttons are not working correctly	33
Buttons do not work	33
An unexpected program opens when a button is pressed	33
Wrong profile is used when a quick start button is pressed	33
Automatic document feeder (ADF) problems	34
Paper jamming, skewing, misfeeds, or multiple-page feeds	34
Paper does not feed from the ADF	34
The bottom of the scanned image is cut off	34
The scanned images have streaks or scratches	35
An item loaded in the ADF jams repeatedly	35
Clear jams from the ADF	35
Remove a paper jam within the ADF	38
Contact HP Support	38
Advanced technical features	39
Long pages	39
Color dropout	39
Misfeed (Multipick) Detection	39