HP Color LaserJet CM2320nf User Manual

Solve image-quality problems
Print problems
Print quality problems
Occasionally, you might encounter problems with print quality. The information in the following sections
helps you identify and resolve these issues.
NOTE:If you are having copy problems, see Copy problems on page 227.
General print quality issues
The following examples depict Letter-size paper that has passed through the product short-edge first.
These examples illustrate problems that would affect all of the pages that you print,...

ProblemCauseSolution
Vertical streaks or bands appear on the
page.
A
A
A
A
AB
B
B
B
BC
C
C
C
Ca
a
a
a
ac
c
c
c
cb
b
b
b
b
One or more print cartridges might be
defective.Print the Supplies status page to check
the remaining life. See 
Information pageson page 168
.
Replace any low print cartridges. See
Print cartridge on page 185 .
The product is set to override the
Replace [color] cartridge  message and
to continue printing.Replace any low print cartridges. SeePrint cartridge on page 185 .
The amount...

ProblemCauseSolution
Marks repeatedly appear at even
intervals on the printed side of the page.The device is not set to print on the type
of media on which you want to print.In the printer driver, select the Paper tab
and set  Type is to match the type of
paper on which you are printing. 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....

ProblemCauseSolution
The printed page is curled or wavy.The device is not set to print on the type
of media on which you want to print.In the printer driver, select the Paper tab
and set  Type is to match the type of
paper on which you are printing. Print
speed might be slower if you are using
heavy paper.
The  Service  menu item  Less paper
curl  is set to  Off.Use the control-panel menus to change
the setting. See Control-panel menuson page 10.
The media might not meet HP
specifications.Use a...

ProblemCauseSolution
An image that appears at the top of the
page (in solid black) repeats farther
down the page (in a gray field).Software settings might affect image
printing.In your software program, change the
tone (darkness) of the field in which the
repeated image appears.
In your software program, rotate the
whole page 180° to print the lighter
image first.
The order of images printed might affect
printing.Change the order in which the images
are printed. For example, have the lighter
image at...

ProblemCauseSolution
A color is printing inconsistently after you
load a new print cartridge.Another print cartridge might be
defective.Remove the print cartridge for the color
that is printing inconsistently and reinstall
it.
The product is set to override the
Replace [color] cartridge message and
to continue printing.Replace any low print cartridges. SeePrint cartridge on page 185 .
The colors on the printed page do not
match the colors as they appear on the
screen.
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AaBbCc
AaBbCc
AaBbCc
AaBbCc...

●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.
CAUTION:
Failure to follow these guidelines could cause jams or damage to the product.
Solve print-media problems
The following problems with media cause print-quality deviations, jamming, or even damage to the
product.
ProblemCauseSolution
Poor print quality or toner
adhesionThe paper is too moist, too rough, too heavy or
too smooth, or it...

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 
Loadpaper and print media on page 59.
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 mediacorrectly.See Media-handling problems on page 224.
The media might be jamming in the product.Clear the jam. See Clear jams on page 207.
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.
● Verify that you are using a certified USB
2.0 cable.
The...

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. Contact HP. See 
www.hp.com/
support/CM2320series  or the support flyer that came in the product box.
Image problems
ProblemCauseSolution
Copy edges are cropped when
copying from the glassThe original is edge-to-edge or has smaller
margins than those supported by this
product.Position the original 6.35 mm (1/4 inch)
away from the...