Справочник Пользователя для Lexmark 640

The information in the following table may help you solve print quality problems. If these suggestions still do not correct the 
problem, call for service. You may have a printer part that requires adjustment or replacement.

Print is too light. 

• The toner may be low. To utilize the remaining toner, remove the cartridge by gripping 

the handles with both hands. With the cartridge arrows pointing downward, firmly 
shake the print cartridge side-to-side and front-to-back several times to redistribute the 
toner. Reinstall the cartridge and then press 

. 

Repeat this procedure multiple times 

until the print remains faded. When the print remains faded replace the print cartridge.

• Change the Toner Darkness setting in the Quality menu.
• Change the Brightness setting in the Quality menu.
• Change the Contrast setting in the Quality menu.
• If you are printing on an uneven print surface, change the Paper Weight and Paper 

Texture settings in the Paper menu.

• Verify the correct print media is being used.

Toner smears or print comes 
off the page.

• If you are printing on an uneven print surface, change the Paper Weight and Paper 

Texture settings in the Paper menu.

• Verify the print media is within the printer specifications. See Understanding paper 

and specialty media guidelines for more details.

If the problem continues, contact the Lexmark Customer Support Center at
1-800-Lexmark (1-800-539-6275) or http://support.lexmark.com.

Toner appears on the back of 
the printed page.

Toner is on the transfer roll. To help prevent this, do not load print media that is smaller 
than the page size of the job to be printed.

Open and close the printer top front cover to run the printer setup cycle and clean the 
transfer roll.

Toner fog or background 
shading appears on the page.

• Check the print cartridge to make sure it is installed correctly.
• Replace the print cartridge.