Brother International HL7050 Users Manual - English - Page 193

Examples of poor print quality Recommendation ABCDEFGH abcdefghijk ABCD abcde 01234 Black lines down the page Printed pages have toner stains stripes down the page. 108 mm (4.25 in.) 108 mm (4.25 in.) ■ The toner cartridge may be damaged. Put in a new toner cartridge. See Replacing the toner cartridge in Chapter 5. ■ You may clear the problem by cleaning the primary corona wire inside the drum unit by sliding the blue tab. Make sure to return the blue tab to the Home position ( ). See Cleaning the corona wire in Chapter 5. ■ Print the cleaning page. To print these two sheets, use the control panel Menu buttons to go to the INFORMATION menu and then to the MAINTENANCE menu to select CLEANING PAGE. If the black spots still appear, print the cleaning page again. For more information, see Chapter 3. Black spots Black spots at 108 mm (4.25 in.) intervals. ■ You may clear the problem by cleaning the primary corona wire inside the drum unit by sliding the blue tab. Make sure you return the blue tab to the Home position ( ). See Cleaning the corona wire in Chapter 5. ■ The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit in Chapter 5. All black ■ The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit in Chapter 5. ABCDEFGH abcdefghijk ABCD abcde 01234 Lines across the page 6 - 25 TROUBLESHOOTING