Samsung SCX-6545N Manual De Usuario

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Troubleshooting_ 114
Printing quality problems
If the inside of the machine is dirty or paper has been loaded improperly, 
you may notice a reduction in print quality. See the table below to clear the 
problem.
CONDITION
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Light or faded print
If a vertical white streak or faded area appears 
on the page:
The toner supply is low. You may be able 
to temporarily extend the toner cartridge 
life. If this does not improve the print 
quality, install a new toner cartridge.
The paper may not meet paper 
specifications; for example, the paper may 
be too moist or rough. (See "Specification 
on print media" on page 35.)
If the entire page is light, the print 
resolution setting is too low or the toner 
save mode is on. Adjust the print resolution 
and turn the toner save mode off. See the 
help screen of the printer driver and refer to 
Software section, respectively.
A combination of faded or smeared defects 
may indicate that the toner cartridge needs 
cleaning. Contact a service representative.
The surface of the LSU part inside the 
machine may be dirty. Clean the LSU, 
contact a service representative. 
Toner specks
The paper may not meet specifications; for 
example, the paper may be too moist or 
rough. (See "Specification on print 
media" on page 35.)
The transfer roller may be dirty. Clean the 
inside of your machine. Contact a service 
representative.
The paper path may need cleaning. Contact 
a service representative.
Dropouts
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 "Specification on print media" on 
page 35.)
The paper lot is bad. The manufacturing 
processes can cause some areas to reject 
toner. Try a different kind or brand of 
paper.
Change the printer option and try again. Go 
to printer properties, click Paper tab, and 
set type to Thick Paper. Refer to the 
Software section for details.
If these steps do not correct the problem, 
contact a service representative.
White Spots 
White spots appears on the page:
The paper is too rough and a lot of dirt from 
a paper falls to the inner devices within the 
machine, so the transfer roller may be dirty. 
Clean the inside of your machine. (See 
"Cleaning the transfer unit" on page 95.) 
Contact a service representative.
The paper path may need cleaning. 
Contact a service representative.
Vertical lines
If black vertical streaks appear on the page:
The surface(drum part) of the imaging unit 
inside the machine has probably been 
scratched. Remove the imaging unit and 
install a new one. (See "Replacing the 
imaging unit" on page 97.)
If white vertical streaks appear on the page:
The surface of the LSU part inside the 
machine may be dirty. Clean the LSU. 
Contact a service representative.
Color or Black 
background
If the amount of background shading becomes 
unacceptable:
Check the environmental conditions: very 
dry conditions (low humidity) or a high level 
of humidity (higher than 80% RH) can 
increase the amount of background 
shading.
Remove the old imaging unit and then, 
install a new one. (See "Replacing the 
imaging unit" on page 97.)
Toner smear
Clean the inside of the machine. Contact a 
service representative.
Remove the imaging unit and then, install a 
new one. (See "Replacing the imaging 
unit" on page 97.)
CONDITION
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