Brother MFC-L2712DN - Page 51

4.64.6
TT
roubroub
lesles
hoothoot
ing ing
for for
ConCon
trol trol
PanePane
l Pl P
robrob
lemlem
ss
4.64.6
.1.1
NotNot
hinhin
g is disg is dis
plapla
yed oyed o
n the LCn the LC
DD
<User Check><User Check>
••
Turn tTurn t
he power swhe power sw
itch OFF anitch OFF an
d then bacd then bac
k ON againk ON again
..
••
Unplug Unplug
the AC the AC
cord acord a
nd then nd then
plug iplug i
t againt again
..
4.64.6
.2.2
NotNot
hinhin
g is disg is dis
plapla
yed oyed o
n the LEn the LE
DD
<User Check><User Check>
••
Turn tTurn t
he power swhe power sw
itch OFF anitch OFF an
d then bacd then bac
k ON againk ON again
..
4.6.34.6.3
UnabUnab
le to le to
perfoperfo
rm prm p
anel anel
operoper
ationation
<User Check><User Check>
••
Turn tTurn t
he power swhe power sw
itch OFF anitch OFF an
d then bacd then bac
k ON againk ON again
..
SS
tt
ee
pp
CC
aa
uu
ss
ee
RR
ee
mm
ee
dd
yy
11
Connection failure of theConnection failure of the
panel flat cablepanel flat cable
Reconnect the panel flat cable.Reconnect the panel flat cable.
22
Connection failure of the low-Connection failure of the low-
voltage power supply harnessvoltage power supply harness
Reconnect the low-voltage power supplyReconnect the low-voltage power supply
harness.harness.
33
Connection failure of the LCDConnection failure of the LCD
flat cableflat cable
Reconnect the LCD flat cable.Reconnect the LCD flat cable.
44
AA
C C
cc
oo
rr
d d
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
AA
C C
cc
oo
rr
dd
..
55
PP
aa
nn
ee
l l
ff
ll
aa
t t
cc
aa
bb
ll
e e
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
pp
aa
nn
ee
l l
ff
ll
aa
t t
cc
aa
bb
ll
ee
..
66
LL
CC
D D
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
pp
aa
nn
ee
l l
uu
nn
ii
tt
..
77
PP
aa
nn
ee
l l
PP
CC
B B
AA
SS
SS
Y Y
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
pp
aa
nn
ee
l l
PP
CC
B B
AA
SS
SS
YY
..
88
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
..
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
Connection failure of the keyConnection failure of the key
PCB flat cablePCB flat cable
Reconnect the key PCB flat cable.Reconnect the key PCB flat cable.
22
PP
aa
nn
ee
l l
ff
ll
aa
t t
cc
aa
bb
ll
e e
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
pp
aa
nn
ee
l l
ff
ll
aa
t t
cc
aa
bb
ll
ee
..
33
KK
ee
y y
PP
CC
B B
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
kk
ee
y y
PP
CC
B B
AA
SS
SS
YY
..
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
Connection failure of the panelConnection failure of the panel
flat cableflat cable
Reconnect the panel flat cable.Reconnect the panel flat cable.
22
Connection failure of the touchConnection failure of the touch
panel flat cablepanel flat cable
Reconnect the touch panel flat cable.Reconnect the touch panel flat cable.
33
Connection failure of the keyConnection failure of the key
PCB flat cablePCB flat cable
Reconnect the key PCB flat cable.Reconnect the key PCB flat cable.
44
PP
aa
nn
ee
l l
PP
CC
B B
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
pp
aa
nn
ee
l l
PP
CC
B B
AA
SS
SS
YY
..
55
KK
ee
y y
PP
CC
B B
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
kk
ee
y y
PP
CC
B B
AA
SS
SS
YY
..
66
TT
oo
uu
cc
h h
pp
aa
nn
ee
l l
AA
SS
SS
Y Y
ff
aa
ii
ll
uu
rr
ee
RR
ee
pp
ll
aa
cc
e e
tt
hh
e e
pp
aa
nn
ee
l l
uu
nn
ii
tt
..