Samsung ML-1200 - Manual (Page 47)

P ROBLEM S OLVING 7.13 P ROBLEM S OLVING 7.12
Problem Solution
If the amount of background shading becomes unacceptable,
the procedures below may fix the problem.
• Change to a lighter weight pages. See “Paper
Specifications” on page A.2 .
• Check the printer’s environment; very dry (low humidity)
or high humidity (higher than 80% RH) conditions can
increase the amount of background shading.
• Install a new toner cartridge.
Gray background
• Clean the inside of the printer. See “Cleaning the Inside”
on page 6.4 .
• Check the paper type and quality. See “Paper
Specifications” on page A.2 .
• Install a new toner cartridge.
Toner smear
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 page
6.5 ). After the printout, if
you still have the same problems, install a new toner
cartridge.
• Parts of the printer 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.
Vertical repetitive defects
Solving Print Quality Problems Solving Print Quality Problems
Problem Solution
• The paper may not meet specifications (for example, the
paper is too moist or too rough). See “Paper Specifications”
on page
A.2 .
• The transfer roller may be dirty. See “Cleaning the Inside”
on page 6.4 .
• The paper path may need cleaning. See “Cleaning the
Inside”.
Toner specs
If faded areas, generally rounded, occur randomly on the
page:
• A single sheet of paper may be defective. Try reprinting the
job.
• The moisture content of the paper is uneven or the paper
has moist spots on its surface. Try a different brand of
paper. See “Paper Specifications” on page
A.2 .
• The paper lot is bad. The manufacturing processes can
cause some areas to reject toner. Try a different kind or
brand of paper.
• The toner cartridge may be defective. See “Vertical
repetitive defects” on the next page.
• If these steps do not correct the problems, contact a
service representative.
Dropouts
If black vertical streaks appear on the page:
• The drum inside the toner cartridge has probably been
scratched. Install a new toner cartridge.
Vertical lines