Canon imageCLASS D761 imageCLASS D780/D760/D761 Reference Guide - Page 47

When to Replace the Cartridge The cartridge is a consumable item and should be replaced when the toner runs out. The following guidelines will help you to determine when to replace the cartridge. • When the toner is running low, the LCD displays REPLACE CARTRIDGE. NOTE If white streaks or light bands are displayed on copies, or REPLACE CARTRIDGE appears on the LCD, the toner in the cartridge is running low. Paper feeding direction Remove the cartridge from the machine. Rock the cartridge 5 or 6 times to distribute the toner evenly. Re-install the cartridge in the machine. Then, make a few test copies or printouts. If the copies appear normal You can use the cartridge, however, a new one will be needed soon. If white streaks or light bands are still present ® Replace the cartridge with a new one. ( p. 5-7) 5-4