Brother MFC-L2712DN - Page 54

4.84.8
TT
roubroub
lesles
hoohoo
ting ting
for for
FusFus
er er
UniUni
t Pt P
roblrobl
emsems
4.4.
8.8.
11
FuFu
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it fait fa
iluilu
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4.94.9
TT
roubroub
lesles
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tintin
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or or
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ProPro
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msms
4.94.9
.1.1
LasLas
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uniuni
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faifai
lurlur
ee
<User Check><User Check>
••
Turn ON thTurn ON th
e power switce power switc
h, then open the front covh, then open the front cov
er and the back coverer and the back cover
. Leave the machi. Leave the machi
nene
for a while to remove condensation.for a while to remove condensation.
SS
tt
ee
pp
CC
aa
uu
ss
ee
RR
ee
mm
ee
dd
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11
Connection failure of theConnection failure of the
center thermistor harnesscenter thermistor harness
Reconnect the center thermistor harness.Reconnect the center thermistor harness.
22
Connection failure of the sideConnection failure of the side
thermistor harnessthermistor harness
Reconnect the side thermistor harness.Reconnect the side thermistor harness.
33
Connection failure of theConnection failure of the
heater harnessheater harness
Reconnect the heater harness.Reconnect the heater harness.
44
Connection failure of the ejectConnection failure of the eject
sensor PCB harnesssensor PCB harness
Reconnect the eject sensor PCB harness.Reconnect the eject sensor PCB harness.
55
EE
jj
ee
cc
t t
ss
ee
nn
ss
oo
r r
PP
CC
B B
ff
aa
ii
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RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
ee
jj
ee
cc
t t
ss
ee
nn
ss
oo
r r
PP
CC
B B
AA
SS
SS
YY
..
66
Low-voltage power supplyLow-voltage power supply
PCB failurePCB failure
Replace the low-voltage power supply PCBReplace the low-voltage power supply PCB
ASSYASSY
..
77
FF
uu
ss
ee
r r
uu
nn
ii
t t
ff
aa
ii
ll
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ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
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ff
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ss
ee
r r
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nn
ii
tt
..
88
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
..
Note:Note:
••
Turn the poTurn the po
wer switwer swit
ch OFF and then ON agaich OFF and then ON agai
n. Leave the macn. Leave the mac
hine for 15 minuhine for 15 minu
tes.tes.
This problem may then be cleared.This problem may then be cleared.
••
The machine may recoThe machine may reco
ver from the errorver from the error
, when the test printing of the mainte, when the test printing of the mainte
nance modenance mode
for service personnel is started. for service personnel is started.
However, conducting this operation while the heater hasHowever, conducting this operation while the heater has
not yet cooled may cause the fuser unit to melt. Be careful.not yet cooled may cause the fuser unit to melt. Be careful.
SS
tt
ee
pp
CC
aa
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mm
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dd
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11
LL
aa
ss
ee
r r
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nn
ii
t t
aa
tt
tt
aa
cc
hh
mm
ee
nn
t t
ff
aa
ii
ll
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rr
ee
RR
ee
aa
tt
tt
aa
cc
h h
tt
hh
e e
ll
aa
ss
ee
r r
uu
nn
ii
tt
..
22
Connection failure of the laserConnection failure of the laser
unit flat cableunit flat cable
Reconnect the laser unit flat cable.Reconnect the laser unit flat cable.
33
Connection failure of theConnection failure of the
polygon motor harnesspolygon motor harness
Reconnect the polygon motor harness.Reconnect the polygon motor harness.
44
LL
aa
ss
ee
r r
uu
nn
ii
t t
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
ll
aa
ss
ee
r r
uu
nn
ii
tt
..
55
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
..