Samsung ML-3560 Series Manual De Usuario

Solving Problems

7.9

If black vertical streaks appear on the page:
• The drum inside the toner cartridge has probably 

been scratched. Install a new toner cartridge. 

If white vertical lines appear on the page:
• The surface of the LSU may be dirty. Clean the LSU. 

See page 6.6.

If the amount of background shading becomes 
unacceptable, the procedures below may fix the 
problem.
• Change to lighter weight pages. See “Paper 

Specifications” on page 10.2.

• Check the printer’s environment; very dry (low 

humidity) or high humidity (higher than 80% RH) 
conditions can increase the amount of background 
shading.

• Remove the old toner cartridge and install a new 

one. See “Replacing the Toner Cartridge” on 
page 6.3.

• Clean the inside of the printer. See “Cleaning the 

• Check the paper type and quality. See “Paper 

Specifications” on page 10.2.

• Remove the toner cartridge and install a new one. 

See “Replacing the Toner Cartridge” on page 6.3.

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 6.6. 
After the printout, if you still have the same 
problems, install a new toner cartridge. See 
“Replacing the Toner Cartridge” on page 6.3.

• 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.

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Background scatter results from bits of toner 
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 via the printer 
properties window.

• If characters are improperly formed and producing 

hollowed images, the paper stock may be too slick. 
Try a different paper. See “Paper Specifications” on 
page 10.2.

• If characters are improperly formed and producing a 

wavy effect, the scanner unit may need service. 
Verify that it also occurs on a demo page (see 
page 2.7). For service, contact a service 
representative.

• Ensure that the paper is loaded properly.
• Check the paper type and quality. See “Paper 

• 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 paper is loaded properly.
• Check the paper type and quality. Both high 

temperature and humidity can cause paper curl. See 
“Paper Specifications” on page 10.2.

• Turn over the stack of paper in the tray. Also try 

rotating the paper 180° in the tray.

• Try printing to the face up output slot.

• Ensure that the paper is loaded properly.
• Check the paper type and quality. See “Paper 

• Open the rear output tray and try printing to the 

rear output tray (face-up).

• Turn over the stack of paper in the paper tray. Also 

try rotating the paper 180° in the tray.

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