Brother MFC-L2712DN - Page 50


Ghost

Fogging
<User Check>
•
Check th
e usage envir
onment of the mac
hine. Usi
ng the machi
ne in
hot-humid or cold-dry conditions can cause this problem.
•
Check wh
ether appr
opriate p
aper type is sel
ected on the dri
ver
.
•
Select “I
mprove T
oner Fixi
ng” in the drive
r.
•
Repla
ce the
drum u
nit wit
h a ne
w one.
•
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
Scratch or dirt on the fuser
unit, or conductive leaf spring
deformation
Replace the fuser unit.
2
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY
.
<User Check>
•
Check th
e usage envir
onment of the mac
hine. Usi
ng the machi
ne in
hot-humid or cold-dry conditions can cause this problem.
•
Check
if the
acid p
aper i
s not
used.
•
This probl
em may disappe
ar after printi
ng multiple she
ets of paper
.
•
Repla
ce the to
ner cart
ridge w
ith a new
one.
•
Repla
ce the
drum u
nit wit
h a ne
w one.
S
t
e
p
C
a
u
s
e
R
e
m
e
d
y
1
Dirt on the electrodes of the
toner cartridge and those of
the machine
Clean the electrodes of the toner cartridge.
(Refer to
Fig. 2-16 (P2-84)
.)
2
N
ew
t
o
n
e
r s
e
n
s
o
r P
C
B f
a
i
l
u
re
R
e
pl
a
c
e t
h
e n
e
w t
o
n
e
r s
e
n
s
o
r P
C
B A
SS
Y
.
3
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY
.
4
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
.
Note:
This problem tends to occur when the life of the drum unit or toner cartridge is expiring.