Samsung SCX-8128NA-XAA - Manual (Page 154)

Troubleshooting_ 154
Vertical repetitive
defects
A
If marks repeatedly appear on the printed side of
the page at even intervals:
• The imaging unit may be damaged. If a
repetitive mark occurs on the page, run a
cleaning sheet through several times to
clean the imaging unit. Cleaning the inside. If
you still have the same problems, remove
the imaging unit and install a new one.
Contact a service representative.
• 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.
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 in Printing Preferences (see
"Opening printing preferences" on
page 101).
Misformed
characters
• If characters are improperly formed and
producing hollow images, the paper stock
may be too slick. Try different paper (see
"Print media specifications" on page 165).
• If characters are improperly formed and
producing a wavy effect, the scanner unit may
need service. Cleaning the scan unit or
contact a service representative.
Page skew • Ensure that the paper is loaded properly.
• Check the paper type and quality (see "Print
media specifications" on page 165).
• Ensure that the paper or other material is
loaded correctly and the guides are not too
tight or too loose against the paper stack.
• Ensure that the standard tray right bottom
door, dual cassette feeder right bottom door
or high capacity feeder right bottom door is
securely closed. If the bottom doors are not
completely closed, open and close the bottom
doors.
Condition Suggested Solutions
Curl or wave • Ensure that the paper is loaded properly.
• Check the paper type and quality. Both high
temperature and humidity can cause paper
curl (see "Print media specifications" on
page 165).
• Turn the stack of paper over in the tray. Also
try rotating the paper 180° in the tray.
Wrinkles or
creases
A
• Ensure that the paper is loaded properly.
• Check the paper type and quality (see "Print
media specifications" on page 165).
• Turn the stack of paper over in the tray. Also
try rotating the paper 180° in the tray.
• Ensure that the standard tray right bottom
door, dual cassette feeder right bottom door
or high capacity feeder right bottom door is
securely closed. If the bottom doors are not
completely closed, open and close the bottom
doors.
Back of printouts
are dirty
Check for leaking toner. Clean the inside of the
machine. Cleaning the inside or contact a
service representative.
Solid Color or
Black pages
• The imaging unit may not be installed
properly. Remove the imaging unit and
reinsert it.
• The imaging unit may be defective and need
replacing. Remove the imaging unit and
install a new one. Contact a service
representative.
• The machine may require repair. Contact a
service representative.
Loose toner • Clean the inside of the machine. Cleaning the
inside or contact a service representative.
• Check the paper type and quality (see "Print
media specifications" on page 165).
• Remove the imaging unit and install a new
one. Contact a service representative.
• If the problem persists, the machine may
require repair. Contact a service
representative.
Condition Suggested Solutions