Brother MFC-L2712DN - Page 53

4.7.34.7.3
TT
oner reoner re
placplac
ement mesement mes
sage dispsage disp
layed on LClayed on LC
D is not clearedD is not cleared
<User Check><User Check>
••
Be sure tBe sure t
o set a neo set a ne
w toner cw toner c
artridartrid
ge(or boge(or bo
x).x).
••
Check thCheck th
at the genuiat the genui
ne toner cane toner ca
rtridgertridge
(or box) is s(or box) is s
et.et.
4.4.
7.7.
44
DrDr
um um
erer
roro
rr
<User Check><User Check>
••
Clean Clean
the cothe co
rona wrona w
ire of ire of
the druthe dru
m unitm unit
..
••
ReplacReplac
e the de the d
rum unrum un
it witit wit
h a new h a new
one.one.
4.7.54.7.5
Drum reDrum re
placeplace
ment mesment mes
sage disage di
splaysplay
ed on LCD is noed on LCD is no
t cleart clear
eded
<User Check><User Check>
••
Reset thReset th
e drum coe drum co
unter acunter ac
cording cording
to the mato the ma
nual.nual.
SS
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ee
pp
CC
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mm
ee
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11
NN
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w w
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acac
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nene
w w
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onon
er er
aa
cc
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uaua
toto
rr
..
22
Connection failure of the newConnection failure of the new
toner sensor PCB harnesstoner sensor PCB harness
(Models without toner box)(Models without toner box)
Reconnect the new toner sensor PCBReconnect the new toner sensor PCB
harness.harness.
33
Connection failure of the newConnection failure of the new
toner box sensor PCB harnesstoner box sensor PCB harness
(Models with toner box)(Models with toner box)
Reconnect the new toner box sensor PCBReconnect the new toner box sensor PCB
harness.harness.
44
Connection failure of theConnection failure of the
toner box relay PCB harnesstoner box relay PCB harness
(Models with toner box)(Models with toner box)
Reconnect the toner box relay PCB harness.Reconnect the toner box relay PCB harness.
55
New toner sensor PCBNew toner sensor PCB
failurefailure
(Models without toner box)(Models without toner box)
Replace the new toner sensor Replace the new toner sensor
PCB ASSYPCB ASSY
..
66
New toner box sensor PCBNew toner box sensor PCB
failurefailure
(Models with toner box)(Models with toner box)
Replace the new toner box sensor PCBReplace the new toner box sensor PCB
ASSYASSY
..
77
TT
oner box relay oner box relay
PCB failurePCB failure
(Models with toner box)(Models with toner box)
Replace the toner box relay Replace the toner box relay
PCB ASSYPCB ASSY
..
88
High-voltage power supplyHigh-voltage power supply
PCB failurePCB failure
Replace the high-voltage power supply PCBReplace the high-voltage power supply PCB
ASSYASSY
..
99
MM
aa
ii
n n
PP
CC
B B
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
mm
aa
ii
n n
PP
CC
B B
AA
SS
SS
YY
..
SS
tt
ee
pp
CC
aa
uu
ss
ee
RR
ee
mm
ee
dd
yy
11
Dirt on the electrodes of theDirt on the electrodes of the
drum unit and those of thedrum unit and those of the
machinemachine
Clean the electrodes of the drum unit andClean the electrodes of the drum unit and
those of the machine. (Refer tothose of the machine. (Refer to
Fig. 2-12 (P2-Fig. 2-12 (P2-
56)56)
andand
Fig. 2-13 (P2-56)Fig. 2-13 (P2-56)
.).)
22
Dirt on the electrodes of theDirt on the electrodes of the
high-voltage power supplyhigh-voltage power supply
PCB and those of the PCB and those of the
machinemachine
Clean the electrodes of the high-voltageClean the electrodes of the high-voltage
power supply PCB and those of the machine.power supply PCB and those of the machine.
33
High-voltage power supplyHigh-voltage power supply
PCB failurePCB failure
Replace the high-voltage power supply PCBReplace the high-voltage power supply PCB
ASSYASSY
..
44
MM
aa
ii
n n
PP
CC
B B
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
mm
aa
ii
n n
PP
CC
B B
AA
SS
SS
YY
..
SS
tt
ee
pp
CC
aa
uu
ss
ee
RR
ee
mm
ee
dd
yy
11
MM
aa
ii
n n
PP
CC
B B
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
mm
aa
ii
n n
PP
CC
B B
AA
SS
SS
YY
..