f Clean the corona wire inside the drum unit by gently sliding the green tab from left to right and right to left several times.
1
CAUTION
Be sure to return the tab to the home position (b) (1). If you do not, printed pages may have a vertical stripe.
g Close the corona wire cover.
i Hold the handle of the toner cartridge and slide the toner cartridge into the drum unit. Make sure that you match the toner cartridge color to the same color label on the drum unit, and make sure that you fold down the toner cartridge handle (A) once the toner cartridge is in place. Repeat this for all the toner cartridges.
A
1
2
3
4
2
1
1C - Cyan
2M - Magenta
3Y - Yellow
4K - Black
h Repeat e to g to clean each of the remaining corona wires.