Brother International HL-L2350DW Online Users Guide HTML - Page 171

Examples of poor print quality White lines across the page ABCDEFGH abcdefghijk ABCD abcde 01234 Lines across the page Recommendation Replace the drum unit with a new drum unit. • Clean the drum unit. • The drum unit may be damaged. Replace the drum unit with a new drum unit. • Check the machine's environment. Conditions such as high humidity and high temperatures may cause this print quality problem. • Clean the drum unit. • If the problem is not solved after printing a few pages, replace the drum unit with a new drum unit. White lines, bands or ribbing across the page • • White Spots on black text and graphics at 3.7 in. (94 mm) intervals If the problem is not solved after printing a few pages, the drum unit may have foreign material, such as glue from a label, stuck on the drum. Clean the drum unit. See Related Information:Clean the Drum Unit Using Drum Dot Print. The drum unit may be damaged. Replace the drum unit with a new drum unit. Black spots at 3.7 in. (94 mm) intervals ABCDEFGH abcdefghijk ABCD abcde 01234 Black toner marks across the page • If you use label sheets for laser printers, the glue from the sheets may sometimes stick to the drum surface. Clean the drum unit. See Related Information:Clean the Drum Unit Using Drum Dot Print. • If you used paper that has clips or staples, the drum unit may be damaged. • If the unpacked drum unit is in direct sunlight (or room light for long periods of time), the unit may be damaged. • Clean the drum unit. • The toner cartridge may be damaged. Replace the toner cartridge with a new toner cartridge. • The drum unit may be damaged. Replace the drum unit with a new drum unit. 167