Samsung SCX4521F User Manual (ENGLISH) - Page 67

Condition Back of printouts are dirty Suggested solutions Check for leaking toner. Clean the inside of the machine. See "Cleaning the Inside" on page 8.2. Black pages A • The toner cartridge may not be installed properly. Remove the cartridge and reinsert it. • The toner cartridge may be defective and need replacing. Remove the toner cartridge and install a new one. See "Replacing the Toner Cartridge" on page 8.4. • The machine may require repair. Contact a service representative. Loose toner Character Voids A Horizontal stripes AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc • Clean the inside of the machine. See "Cleaning the Inside" on page 8.2. • Check the paper type and quality. See "Paper Specifications" on page 10.3. • Remove the toner cartridge and install a new one. See "Replacing the Toner Cartridge" on page 8.4. • If the problem persists, the machine may require repair. Contact a service representative. Character voids are white areas within parts of characters that should be solid black: • If you are using transparencies, try another type of transparency. Because of the composition of transparencies, some character voids are normal. • You may be printing on the wrong surface of the paper. Remove the paper and turn it around. • The paper may not meet paper specifications. See "Paper Specifications" on page 10.3. If horizontally aligned black streaks or smears appear: • The toner cartridge may be installed improperly. Remove the cartridge and reinsert it. • The toner cartridge may be defective. Remove the toner cartridge and install a new one. See "Replacing the Toner Cartridge" on page 8.4. • If the problem persists, the machine may require repair. Contact a service representative. Curl If the printed paper is curled or paper does not feed into the machine: • Turn over the stack of paper in the tray. Also try rotating the paper 180° in the tray. Copying Problems Condition Suggested solutions Copies are too light or Use the Darkness button to darken or lighten the too dark. background of the copies. Smears, lines, marks, or spots appears on copies. • If defects are on the original, press the Darkness button to lighten the background of your copies. • If no defects are on the original, clean the scan unit. See "Cleaning the Scan Unit" on page 8.3. Copy image is skewed. • Ensure that the original is face down on the document glass or face up in the ADF (Automatic Document Feeder). • Check that the copy paper is loaded correctly. Blank copies print out. Ensure that the original is face down on the document glass or face up in the ADF. Image rubs off the copy easily. • Replace the paper in the tray with paper from a new package. • In high humidity areas, do not leave paper in the machine for extended periods of time. Frequent copy paper jams occur. • Fan the stack of paper, then turn it over in the tray. Replace the paper in the tray with a fresh supply. Check/adjust the paper guides, if necessary. • Ensure that the paper is the proper paper weight. 20 lb (75 g/m2 bond) paper is recommended. • Check for copy paper or pieces of copy paper remaining in the machine after a paper jam has been cleared. Toner cartridge produces fewer copies than expected before running out of toner. • Your originals may contain pictures, solids, or heavy lines. For example, your originals may be forms, newsletters, books, or other documents that use more toner. • The machine may be turned on and off frequently. • The document cover may be left open while copies are being made. 9.10 Troubleshooting