Replacing the Toner Cartridge
On MF4140/MF4150, when the LCD displays <OUT OF TONER/CHANGE TONER>, or toner level is low by pressing [Toner Gauge], redistribute toner in the toner cartridge. If the message persists, replace the toner cartridge.
On MF4122, when the printout has vertical white streaks, or toner level is low by pressing [Toner Gauge], redistribute the toner inside the cartridge. If the problem persists, replace the cartridge.
2
3
Remove the toner cartridge.
Gently rock the toner cartridge five or six times to distribute toner evenly.
Redistributing Toner
1 Lift the scanning platform until it is locked (A), and open the printer cover (B).
Maintenance
A
B