HP (Hewlett-Packard) N8400 All in One Printer User Manual


 
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.
Chapter 4
18 Care and maintenance