Brother HL 3070CW - Manual (Page 143)

Routine Maintenance
133
5
c
Clean the primary corona wire inside the drum unit by gently sliding the green tab from left to right and
right to left several times.
Note
Be sure to return the tab to the home position (a) (1). If you do not, printed pages may have a vertical stripe.
d
Slide the drum unit and toner cartridge assembly into the printer. Make sure that you match the toner
cartridge color to the same color label on the printer.
e
Repeat steps b to d to clean each of the remaining corona wires.
f
Close the top cover of the printer.
g
Turn the printer power switch back on.
C - Cyan
M - Magenta
Y - Yellow
K - Black
1
C
M
Y
K