HP LaserJet M1120 User Manual

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The amount of background toner
shading becomes unacceptable.The media might not meet HP specifications.Use a different paper with a lighter basis
weight. See 
Paper and print mediaon page 31.
The priority input tray might be installed
incorrectly.Make sure that the priority input tray is in
place.
The print-density setting is too high.Decrease the print-density setting through
the print driver. This decreases the amount
of...

ProblemCauseSolution
Marks repeatedly appear at even 
intervals on the page.
The product is not set to print on the type of
media on which you want to print.
In the printer driver, make sure that the
appropriate media type is selected. Print
speed might be slower if you are using
heavy paper.
Internal parts might have toner on them.The problem typically corrects itself after a
few more pages.
The paper path might need cleaning.Clean the paper path. See Clean the paper
path on page 75 .
The print...

ProblemCauseSolution
The printed page contains
wrinkles or creases.The media might be loaded incorrectly or the
input tray might be too full.Turn over the stack of paper in the input tray,
or try rotating the paper 180° in the input
tray.
Verify that the media is loaded correctly and
that the media guides are not too tight or too
loose against the stack. See 
Load paperand print media on page 35.
The media might not meet HP specifications.Use a different paper, such as high-quality
paper that is intended...

●Do not use media that is designed for inkjet printers only. Use media that is designed for laser
printers.
●Do not use letterhead paper that is printed with low-temperature inks, such as those used in some
types of thermography.
●Do not use raised or embossed letterhead.
●The product uses heat and pressure to fuse toner to the paper. Make sure that any colored paper
or preprinted forms use inks that are compatible with this fusing temperature (200°C or 392°F for
0.1 second).
CAUTION:Failure to follow...

ProblemCauseSolution
More than one sheet feeds at
one time.The media tray might be overloaded.Remove all media from the tray, and then
return some of the media to the tray. See 
Load
paper and print media on page 35.
The media might be wrinkled, folded, or
damaged.Verify that the media is not wrinkled, folded, or
damaged. Try printing on media from a new or
different package.
The media might have been fanned before it
was loaded.Load media that was not fanned. Loosen ream
by twisting paper stack.
Media...

ProblemCauseSolution
Pages did not print. The product might not be pulling media
correctly.See Media-handling problems on page 93.
The media might be jamming in the product.Clear the jam. See Clear jams on page 83.
The USB cable or the network cable might be
defective or incorrectly connected. ●Disconnect the cable at both ends and
reconnect it.
●Try printing a job that has printed in the
past.
●Try using a different USB or network
cable.
The product IP address might have been
changed.From the control...

Image problems
ProblemCauseSolution
Images are missing or faded.The print-cartridge might be defective.Replace the print cartridge. See Print
cartridge on page 73.
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 contrast settings might be set
incorrectly.Use the control-panel Lighter/Darker button
to change the contrast setting.
The...

Media-handling problems
ProblemCauseSolution
Poor print quality or toner
adhesionThe 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 curlThe 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 curlThe paper is too moist, has the wrong...

Performance problems
ProblemCauseSolution
No copy came out.The input tray might be empty.Load media in the product. See Load paper
and print media on page 35 for more
information.
The original might have been loaded
incorrectly.On the flatbed scanner, place the original
document face-down with the upper-left
corner of the document at the corner of the
glass indicated by the icon on the scanner.
Copies are blank. The sealing tape might not have been
removed from the print cartridge.Remove the print...

Scan problems
Solve scanned-image problems
ProblemCauseSolution
The scanned image is of poor
quality.The original might be a second-generation
photo or picture.●To eliminate the patterns, try reducing
the size of the image after scanning.
●Print the scanned image to see if the
quality is better.
●Verify that the resolution settings are
correct for the type of scan job that you
are performing. See 
Scanner
resolution and color on page 64.
The image that appears on the screen might
not be an accurate...