LG LDB4548 Series, Service Manual

Page: 115 / 120

For Authorized Service Technicians For Authorized Service Technicians
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1 2 3
4 5 6
1 2 3
5 6 7
4
8
3 4
2 1
10
5
1
1
2
3
1
2
3
2 1
RD
6:
DC
Se
ns
in
g
1)
Ri
ns
e
Re
fill
Se
ns
in
g-
Si
gnal
2)
Ri
ns
e
Re
fill
-5
V
3)
Su
mp
T
her
mi
st
or
-S
ignal
4)
Tubi
di
ty
Sens
in
g-
5V
5)
Tubi
di
ty
Sens
in
g-
Si
gnal
6)
Tubi
di
ty
Sens
in
g-
GN
D
RD3
:
Wa
sh
ing
Mo
to
r
1)
U
Phas
e
2)
V P
has
e
3)
W
Phas
e
YL
3:
Dr
ai
n
Mo
to
r
1)
U
Phas
e
2)
V P
has
e
3)
W
Phas
e
NA
8:
DC
Se
ns
in
g
1)
Fl
ow
me
te
r(Hal
l
Sens
or
)-
GN
D
2)
Fl
ow
me
te
r(Hal
l
Sens
or
)-
Si
gnal
3)
Su
mp
T
her
mi
st
or
-5
V
4)
Fl
ow
me
te
r(Hal
l
Sens
or
)-
5V
5)
-
6)
Va
rio
Sens
in
g-
Si
gnal
7)
Ba
se
Fl
oat
S
ens
in
g-
SB
5V
8)
Ba
se
Fl
oat
S
ens
in
g-
Si
gnal
WH
6:
DC
Lo
ad
1)
-
2)
-
3)
Di
spens
er
4)
Di
spens
er
-G
ND
5)
In
le
t
Va
lve
6)
In
le
t
Va
lve-
GN
D
WH
4:
D
oor
Se
ns
in
g
1)
D
oor
Sens
ing1
2)
GN
D
3)
D
oor
Sens
ing2
4)
-
CN
1:
Ma
in
-D
ispa
ly
1)
RX
2)
TX
3)
DC
GN
D
4)
DC
16.
5V
5)
-
6)
-
7)
Di
sp
la
y
to
Ma
in
Re
la
y
On
Si
gnal
8)
DC
5V
9)
Ba
se
Fl
oat
S
ens
in
g-
Si
gnal
10)
Tub
la
mp
s
ens
in
g
NA4
:
AC
Loa
d
1)
Fa
n
&
Ther
ma
l
Ac
tuat
or
2)
Va
rio
Mo
to
r
3)
-
4)
-
RL
2:
He
at
er
(L
)
RL
3:
He
at
er
(N
)
4
3
43
1 2 3
BL
2:
Tub
la
mp
1)
Tub
lm
ap
-16.
5V
2)
-
3)T
ub
la
mp
-G
ND
1 2 3
4 5 6
10-2. MAIN PCB
Only LDT5678**/LDF5678**/LDP7708**/SKSDW24***/ LDB4548**/
LDT6809**/ LDP6809**/ LDPS6844**/LDP7808**