Lexmark T642 Service Manual - Page 202

4061-xx0 Problem Toner fog or background shading appears on the page. Action • Check the print cartridge to make sure it is installed correctly. • The Toner Darkness setting may be too dark. Change the Toner Darkness setting in the Quality Menu. • Replace the charge rolls. • Replace the print cartridge. Entire page is white. Streaks appear on the page. • Make sure the packaging material is removed from the print cartridge. • Check the print cartridge to be sure it is installed correctly. • 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. • 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. • If you are using preprinted forms, make sure the ink can withstand temperatures of 230°C (446°F). Printing is too dark. • 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. Note: Macintosh computer users should make sure the job lines per inch (lpi) setting is not set too high in the software application. 3-34 Service Manual