Printing quality problems
346
6. Troubleshooting
Vertical repetitive defects
If marks repeatedly appear on the printed side of the page at even intervals:
•
The toner cartridge may be damaged. If you still have the same problem, remove the toner cartridge and, install a new one (see
"Replacing the toner cartridge" on page 97).
•
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.
Or select
Thick
from the
Printing Preferences
window (see "Opening printing preferences" on page 64).
•
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 64). Ensure the correct paper type is selected. For example:
If Thicker Paper is selected, but Plain Paper actually used, an overcharging can occur causing this copy quality problem.
•
If you are using a new toner cartridge, redistribute the toner first (see "Redistributing toner" on page 94).
Toner particles are around bold
characters or pictures
The toner might not adhere properly to this type of paper.
•
Change the printer option and try again. Go to
Printing Preferences
, click the
Paper
tab, and set the paper type to
Recycled
(see
"Opening printing preferences" on page 64).
•
Ensure the correct paper type is selected. For example: If Thicker Paper is selected, but Plain Paper actually used, an overcharging
can occur causing this copy quality problem.
Condition
Suggested solutions
A
Summary of Contents for M337
Page 3: ...3 BASIC 5 Appendix Specifications 144 Regulatory information 152 Copyright 164...
Page 95: ...Redistributing toner 95 3 Maintenance 4 M3370 M3870 M4070 M4072 series...
Page 96: ...Redistributing toner 96 3 Maintenance 5 M3375 M3875 M4075 series...
Page 104: ...Installing accessories 104 3 Maintenance 2 1 1 2...
Page 109: ...Cleaning the machine 109 3 Maintenance 1...
Page 163: ...Regulatory information 163 5 Appendix 27 China only...