| 1.Open the front cover of the machine. Pull out the drum unit and toner cartridge assembly. 2.Push down the blue lock lever and take the used toner cartridge out of the drum unit. 3.Unpack the new toner cartridge. Hold the cartridge level with both hands and gently rock it from side to side five or six times to spread the toner evenly inside the cartridge. Pull off the protective cover. 4.Put the new toner cartridge firmly into the drum unit until you hear it lock into place. If you put it in properly, the lock lever will lift automatically. 5.Clean the primary corona wire inside the drum unit by gently sliding the blue tab from right to left and left to right several times. Return the tab to the home position (¨‹) before you put the drum unit back into the machine. If you do not, printed pages may have a vertical stripe. 6.Put the drum unit and toner cartridge assembly back into the machine. Close the front cover of the machine. |