Samsung SCX-6345N/XAA Service Manual page 153

Troubleshooting
Condition
Gray background
Toner smear
Vertical repetitive
defects
Background scatter
Misformed characters • If characters are improperly formed and producing hollow images, the paper stock may be too
Service Manual
6-6
Suggested solutions
If the amount of background shading becomes unacceptable:
• Change to a lighter weight paper.
• Check the machine's environment: very dry (low humidity) or high humidity (higher than 80% RH)
conditions can increase the amount of background shading.
• Remove the old drum and toner cartridge and then, install a new one.
• Clean the inside of the machine. Contact a service representative.
• Check the paper type and quality.
• Remove the drum and toner cartridge and then, install a new one. See page 9.4.
If marks repeatedly appear on the printed side of the page at even intervals:
• The drum and toner cartridge may be damaged. If a repetitive mark occurs on the page, print a
cleaning sheet several times to clean the cartridge; contact a service representative. After the
printout, if you still have the same problems, remove the drum and toner cartridge and then,
install a new one.
• 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 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.
slick. Try a different paper.
• If characters are improperly formed and producing a wavy effect, the scanner unit may need
service. For service, contact a service representative.
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