HP LaserJet M4349 Multifunction Printer series - Manual (Page 226)

Solve copy problems
Prevent copy problems
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. See
Load media on page 78 for instructions.
● Use or make a carrier sheet to protect your originals.
NOTE: 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.
Image problems
Problem Cause Solution
Images are missing or faded. The print-cartridge toner-level might be
low. Replace the print cartridge. See Change
the print cartridge on page 154 .
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
darkness. If possible, find an original
document in better condition.
The original might have a colored
background. Touch Copy , and then touch Image
Adjustment. Adjust the Background
Cleanup slider to the right to decrease
the background.
Vertical white or faded stripes appear on
the copy. The media might not meet
HP specifications. Use media that meets HP specifications.
See
Select print media on page 72 .
The print-cartridge toner-level might be
low. Replace the print cartridge. See Change
the print cartridge on page 154 .
Unwanted lines appear on the copy.
A
A
A
A
A
B
B
B
B
B
C
C
C
C
C
a
a
a
a
a
c
c
c
c
c
b
b
b
b
b
Tray 1 or 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
Clean the device
on page 156 .
The photosensitive drum inside the print
cartridge might have been scratched. Install a new HP print cartridge. See
Change the print cartridge on page 154 .
212 Chapter 11 Problem solving ENWW