HP laserjet 3390, 3392 all-in-one Manuale Di Servizio

The following are a few simple steps you can take to improve copy quality:

●

Copy from the flatbed scanner. This will produce a higher quality copy than copying from the
automatic document feeder (ADF).

●

Use quality originals.

●

Load the media correctly. If the media is loaded incorrectly, it might skew, causing unclear images
and problems with the OCR program.

●

Use or make a carrier sheet to protect your originals.

Verify that the media meets HP specifications. If the media meets HP specifications,

recurring feed problems indicate the pickup roller or separation pad is worn.

Images are missing or faded.

The print-cartridge toner-level might be
low.

Replace the print cartridge. See 

The original might be of poor quality.

If your original is too light or damaged,
the copy might not be able to
compensate, even if you adjust the
contrast. If possible, find an original
document in better condition.

The original might have a colored
background.

Colored backgrounds might cause
images in the foreground to blend into
the background, or the background might
appear in a different shade. If possible,
use an original document without a
colored background.

Vertical white or faded stripes appear on
the copy.

The media might not meet
HP specifications.

Use media that meets HP specifications.

The print-cartridge toner-level might be
low.

Replace the print cartridge. See 

Unwanted lines appear on the copy.

Tray 2 might not be installed correctly.

Verify that the tray is in place.

The flatbed scanner or the ADF glass
might be dirty.

Clean the flatbed scanner or the ADF
glass. See 

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Chapter 6   Troubleshooting

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