Brother International MFC-6550MC Users Manual - English - Page 222

MFC 4550/6550MC/7550MC OP-US-5.0 TROUBLESHOOTING PROCEDURES Question Recommendation Printed pages are blurred at the center or at either edge. Blurred Page Certain environmental conditions such as humidity, high temperatures, etc. may cause this condition to occur. • Makesurethemachineisplacedonaflat,horizontalsurface. • Remove the drum unit with the toner cartridge installed. Try rocking them from side to side. • You may clear the problem by wiping the scanner windows with a clean soft cloth. (See "Regular Maintenance" and "Cleaning the Drum Unit" on page 14-1~3.) If the same problem occurs after cleaning and the display shows CHANGE DRUM, replace the drum unit with a new one. Ghost images appear on printed pages. • Turntheprintdensitydialcounterclockwiseforlighterimages. See "The Print is too Light or too Dark" on page 16-6. • Make sure that you use paper that meets the spacifications. Rough surface or thick media can cause the problem. Ghost Images NOTE The drum unit is a consumable item, and it is necessary to replace it periodically. 16-17