Brother Copier/Printer MFC-9970CDW - Manual (Page 93)

Routine maintenance
77
A
Note
• Be sure to return the tab to the home
position (a) (1). If you do not, printed
pages may have a vertical stripe.
• We recommend that you clean the corona
wire for each color. If you want to clean
only the corona wire of the color that
caused the print quality problem, see the
illustration below to identify the position of
each of the corona wires.
The corona wires for black, yellow and
magenta are located under the next toner
cartridge. For example, when you clean
the corona wire for black, you need to
remove the yellow toner cartridge to
access the corona wire for black.
f
Close the corona wire cover.
g
Repeat steps d to f to clean each of
three remaining corona wires.
C: Corona wire for Cyan
M: Corona wire for Magenta
Y: Corona wire for Yellow
K: Corona wire for Black
c: Cyan toner position label
m: Magenta toner position label
y: Yellow toner position label
k: Black toner position label
C
M
Y
K
c
m
y
k