Manual page

Samsung SCX-4720FN User Manual (ver.2.0)
9
T
ROUBLESHOOTING
9.21
Toner smear
• Clean the inside of the machine. See “Cleaning the Inside”
on page 8.3.
• Check the paper type and quality. See “Paper
Specifications” on page D.6.
• Remove the toner cartridge and install a new one. See
“Replacing the Toner Cartridge” on page 8.8.
Vertical repetitive
defects
If marks repeatedly appear on the printed side of the page at
even intervals:
• The toner cartridge may be damaged. If a repetitive mark
occurs on the page, print a cleaning sheet several times to
clean the cartridge; see “Cleaning the Drum” on
page 8.10. After the printout, if you still have the same
problems, remove the toner cartridge and install a new
one. See “Replacing the Toner Cartridge” on page 8.8.
• Parts of the machine may have toner on them. If the
defects occur on the back of the page, the problem will
likely correct itself after a few more pages.
• The fusing assembly may be damaged. Contact a service
representative.
• If you use inferior quality paper;see “Cleaning the Drum”
on page 8.10.
Background scatter
Background scatter results from bits of toner randomly
distributed on the printed page.
• The paper may be too damp. Try printing with a different
batch of paper. Do not open packages of paper until
necessary so that the paper does not absorb too much
moisture.
• If background scatter occurs on an envelope, change the
printing layout to avoid printing over areas that have
overlapping seams on the reverse side. Printing on seams
can cause problems.
• If background scatter covers the entire surface area of a
printed page, adjust the print resolution through your
software application or the printer properties.
Misformed
characters
• If characters are improperly formed and producing hollow
images, the paper stock may be too slick. Try a different
paper. See “Paper Specifications” on page D.6.
• If characters are improperly formed and producing a wavy
effect, the scanner unit may need service. For service,
contact a service representative.
Condition
Suggested solutions
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
A