Media-handling problems – HP LaserJet M4345 Multifunction Printer series User Manual
Page 232
Problem
Cause
Solution
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
.
The photosensitive drum inside the
print cartridge might have been
scratched.
Install a new HP print cartridge. See
.
Black dots or streaks appear on the
copy.
Ink, glue, correction fluid, or an
unwanted substance might be on the
automatic document feeder (ADF) or
flatbed scanner.
Copies are too light or dark.
The darkness setting needs to be
adjusted.
Touch
Copy
, and then touch
Image
Adjustment.
Adjust the
Darkness
slider
to lighten or darken the image.
Text is unclear.
The sharpness setting needs to be
adjusted.
The image should be optimized for text.
To adjust the sharpness, touch
Copy
,
and then touch
Image Adjustment.
Adjust the
Sharpness
slider to the right
to increase the sharpness.
To optimize the image for text, touch
Copy
and then touch
Optimize Text/
Picture
. Select
Text
.
Media-handling problems
Problem
Cause
Solution
Poor print quality or toner adhesion
The paper is too moist, too rough, too
heavy or too smooth, or it is embossed
or from a faulty paper lot.
Try another kind of paper, between 100
and 250 Sheffield, 4 to 6% moisture
content.
Dropouts, jamming, or curl
The paper has been stored incorrectly.
Store paper flat in its moisture-proof
wrapping.
The paper has variability from one side
to the other.
Turn the paper over.
Excessive curl
The paper is too moist, has the wrong
grain direction, or is of short-grain
construction
Open the rear output bin, or use long-
grain paper.
The paper varies from side-to-side.
Turn the paper over.
Jamming, damage to device
The paper has cutouts or perforations.
Use paper that is free of cutouts or
perforations.
220
Chapter 11 Problem solving
ENWW