Brother MFC-L2712DN - Page 49


Downward fogging of solid color

Horizontal lines
<User Check>
•
Repla
ce the to
ner cart
ridge w
ith a ne
w one.
S
t
e
p
C
a
u
s
e
R
e
m
e
d
y
1
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY
.
2
M
a
i
n
P
C
B
f
a
i
l
u
r
e
R
e
p
l
a
c
e
t
h
e
m
a
i
n
P
C
B
A
S
S
Y
.
<User Check>
•
This prob
lem may di
sappear a
fter pr
inting mu
ltiple
sheets of
paper.
•
Re
fe
r t
o
<How to clean the drum unit>
to remove the
dirt from the exposure drum using a cotton applicator.
•
Replac
e the
drum un
it wi
th a ne
w one.
•
Replac
e the to
ner cartr
idge wi
th a new o
ne.
S
t
e
p
C
a
u
s
e
R
e
m
e
d
y
1
D
i
r
t
y c
h
a
r
ge
el
e
c
t
r
o
d
e
s
C
l
e
a
n t
he
e
l
ec
t
r
o
d
e
s o
f t
h
e d
r
u
m u
ni
t a
n
d
those of the machine. (Refer to
Fig. 2-13 (P2-
56)
and
Fig. 2-12 (P2-56)
.)
2
D
i
r
t o
n t
h
e e
x
p
o
s
u
re
d
r
u
m
Pe
r
f
or
m d
r
u
m c
l
e
a
n
i
n
g
.
(Refer to
“2.1 Drum Cleaning” in Chapter 5
.)
3
Scratch or dirt on the fuser
unit
Replace the fuser unit.
4
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY
.