Samsung ML-4550 사용자 설명서

9.12   

<Troubleshooting>

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 8.3. After the printout, if 
you still have the same problems, install a new 
toner cartridge. See page 8.5.

• 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.

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 
page 5.3.

• 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 2.8). For service, 
contact a service representative.

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

5.2.

• Ensure that the paper or other media is loaded 

correctly and the guides are not too tight or 
too loose against the paper stack.

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

temperature and humidity can cause paper 
curl. See page 5.2.

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

try rotating the paper 180° in the tray.

• Try printing to the rear cover (face-up).

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

5.2.

• Open the rear cover and try printing to the rear 

cover (face-up).

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

try rotating the paper 180° in the tray.

• The transfer roller may be dirty. See page 8.1.
• Check for leaking toner. Clean the inside of 

the printer. 

• The toner cartridge may not be installed 

properly. Remove the cartridge and reinsert.

• The toner cartridge may be defective and 

need replacing. Install a new toner cartridge.

• The printer may require repair. Contact a 

service representative.

• Clean the inside of the printer. 
• Check the paper type and quality. See page 

5.2.

• Install a new toner cartridge. See page 8.5.
• If the problem persists, the printer may require 

repair. Contact a service representative.