DOWNLOAD LG F1281ND5 / F1281HD5 Service Manual ↓ Size: 15.6 MB | Pages: 53 in PDF or view online for FREE

Model
F1281ND5 F1281HD5
Pages
53
Size
15.6 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
f1281nd5-f1281hd5.pdf
Date
PREV: LG F1281ND / F1281NDR5 Service Manual

LG F1281ND5 / F1281HD5 Service Manual ▷ View online

14
6. WIRING DIAGRAM / PCB LAYOUT / PROGRAM CHART
S
B
L
Hb
4
2
4
2
3
1
2
6
R
D
3
5
WH
2
1
3
1
1
1. AQUA STOP
2. Vcc=5V
3. WASH THERMISTOR
4. PRESSURE S/W
5. PRESSURE S/W
6. COMON
V
3
2
4
1
4
3
2
1
1
2
1
1
3
1
G
R
Ha
2
1
B
L
176
2
4
1
Hb
4
4
NA3
4
2
2
1
+
1
3
3
33
5
1
3
2
4
Y
L
3
1
1
5
R
D
2
1
1
1
GND
WH
4
4
3
2
2
1
3
1
2
2
4
4
3
4
Aqua Lock
2
2
1
3
2
W
H
GND
1
5
WH
3
2
2
2
2
1
Hb
3
2
B
L
W
H
1
3
3
+
4
G
R
1
Ha
3
G-PJT 
 Wash Only_Cold/Hot
3
2
1
Ha
3
1
3
4
1
3
RD4
Hb
5
1
B
L
Y
L
2
4
6
2
1
3
1
2
2
4
+
4
1
3
3
R
D
GND
3
2
3
175
218
177
217
3
B
L
B
L
2
NA1
4
6
1
3
5
4
W
H
4
4
Ha
1
3
3
2
3
5
1
3
1
GND
DD Motor
2
3
2
V
L
1
2
3
3
5
B
R
2
4
5
3
PRESSURE
SWITCH
3
3
3
2
4
2
5
3
5
3
BL
2
BL1
4
3
U
1
1
3
W
3
Motor
2
R
D
2
6
3
5
4
1
2
1
3
1
2
2
+
4
1
WH
2
1
1
2
2
WH
2
1
AG
THERMISTOR
Wash
312
B
L
49 147
1. DRY3
2. DRY2
3. DRY1
4. WASH THERMISTOR
5. COMON
6. AG THERMISTOR
11
WH/RD
13 14 15
213 214 212 215
W
H
4
3
1
4
2
W
H
1
2 3
YELLOW
V
L
P
K
AG
1
1
L
GND
WH
2
S
3
1
1
3
SENSOR
2
54
18
55
W
H
Wiring Diagram 1/3
S
B
L
Hb
BL
BR
4
2
YL
4
2
3
1
2
V
L
2
6
R
D
3
5
1
8
NA
1
WH
2
1
2
3
1
3
2
1
1. AQUA STOP
2. Vcc=5V
3. WASH THERMISTOR
4. PRESSURE S/W
5. PRESSURE S/W
6. COMON
V
3
3
3
Circulation
PUMP
2
4
1
4
3
BL
INLET VALVE
R
D
RD
2
1
1
1
2
1
5
NA
1
3
1
Y
L
6
1
3
G
R
Ha
2
1
B
L
NOID
1
BL
3
216
6
3
176
2
5
4
1
2
Hb
4
4
NA3
RED
B
L
GR
SOLE
3
4
2
2
BL3
1
1
NOISE FILTER
+
1
3
RD
3
3
NA
3
NA
8
5
3
1
1
3
3
2
4
Y
L
3
2
9
8
1
1
1
5
5
G
R
2
R
D
2
1
GR/
YL
1
1
1
3
GND
WH
5
Y
L
4
4
8
4
4
3
2
3
2
Y
L
2
1
7
3
1
1
2
CON4-1
2
G
R
2
2
4
4
2
3
BR
O
R
4
Aqua Lock
2
2
Dry Model. Only
1
3
2
W
H
B
L
1
GND
FUSE
BLUE
1
5
Power
2
1
7
4
WH
3
2
2
2
1
2
2
1
4
Hb
3
2
B
L
W
H
2
4
1
RD-1
Black
1
3
3
BL
3
1
+
POWER CORD
6
5
4
4
G
R
1
Ha
3
R
D
4
G-PJT Steam Wash Only_Cold/Hot
2
3
2
2
1
1
Ha
1
3
1
3
3
4
1
2
3
RD4
Hb
1
1
5
2
1
B
L
Y
L
2
V
L
4
2
52
BR
5
2
BL
B
L
6
1
GR
/
YL
3
2
RD
1
O
R
3
1
2
Pre
V/V
2
Yellow
3
2
4
+
4
1
1
3
1. Door S/W 1
2. Door S/W 3
3. Main V/V
4. Dry V/V
3
R
D
GND
B
L
4
B
L
3
4
2
BL
3
175
6
DOOR LOCK SWITCH
4
Hot
V/V
7
218
177
GR
/
YL
217
SBL
8
5
3
B
L
2
B
L
4
2
4
NA1
4
B
R
B
L
10
3
6
FUSE
6
R
D
1
3
5
4
1
W
H
4
Y
L
2
4
Ha
321
NA4
1
2
5
3
3
CON1
WHITE
2
3
5
3
3
1
3
4
3
3
6
1
1
1
BL
RD
GND
3
DD Motor
4
WASHING
5
BL
2
3
Heater
2
2
V
L
1
2
3
4
3
6
5
4
3
NA
Tap Relay
B
R
2
4
4
5
YL
R
D
1
B
L
WH4
1
3
RD
PRESSURE
SWITCH
3
3
3
HEATER
2
1. Door S/W4
2. AG V/V
3. Circulation Pump
4
4
2
3
Main
V/V
5
3
B
L
5
2
3
NATURE
BL
2
3
BL1
BL
4
3
1. Drain Pump
2. Pre-Wash V/V
3. Bleach(Rinse V/V)
4. Hot V/V
U
1
1
DRAIN
PUMP
W
H
2
3
W
Buzzer
Display POWER
3
YL
MAIN PWB
G
R
Motor
2
R
D
2
1
BL
6
3
5
BR
4
Main PWB&DISPLAY PWB
DATA LINKER
3
9
1
2
2
7
1
3
3
1
3
2
2
2
Y
L
5
DISPLAY 
1
+
4
2
4
1
WH
2
1
1
2
2
WH
2
1
AG
THERMISTOR
Wash
312
B
L
B
R
49
B
R
147
1. DRY3
2. DRY2
3. DRY1
4. WASH THERMISTOR
5. COMON
6. AG THERMISTOR
11
WH/RD
13 14 15
213 214 212 215
7
B
L
10 9
30
8
1
2
Steam
V/V
RED
7
V
L
216
B
L
28
W
H
BL
B
L
26
9
4
BL
W
H
27
26
BL
GR
5
BL
28
27
GR
WH
6
3
52
31 30
70
17
BL
BL
161
BL
62
70
171
321
302
Tap Relay
320
171
BLUE
GR
BL
4
1
62
2
3
Tap Relay
53
Steam
302
43
31
320
BL
BL
43
60
BL
AG HEATER
FUSE
FUSE
GR
/
YL
RD 60
GR
53
4
3
1
4
2
W
H
1
2 3
YELLOW
V
L
P
K
AG
1
1
L
GND
WH
2
S
3
1
1
3
SENSOR
2
54
18
55
W
H
Option
Full Wiring Diagram
1/3
2/3
3/3
15
YL
V
L
2
1
2
3
Circulation
PUMP
BL
INLET VALVE
RD
1
NOID
BL
216
6
3
RED
GR
SOLE
3
BL3
RD
3
2
1
1
Y
L
4
3
1
G
R
2
BR
Dry Model. Onl
BLUE
2
1
BL
1
4
2
2
1
2
52
BR
2
3
2
Pre
V/V
1
1. Door S/W 1
2. Door S/W 3
3. Main V/V
4. Dry V/V
DOOR LOCK SWITCH
4
Hot
V/V
GR
/
YL
SBL
8
5
2
B
R
B
L
10
2
321
NA4
5
CON1
WHITE
3
3
3
BL
BL
4
4
NA
4
YL
1
B
L
WH4
1
RD
1. Door S/W4
2. AG V/V
3. Circulation Pump
4
Main
V/V
B
L
1. Drain Pump
2. Pre-Wash V/V
3. Bleach(Rinse V/V)
4. Hot V/V
DRAIN
PUMP
YL
MAIN PWB
1
BL
3
2
3
7
B
L
10 9
30
8
1
2
Steam
V/V
RED
7
V
L
216
B
L
28
W
H
BL
B
L
26
9
4
BL
27
26
BL
GR
5
BL
28
27
GR
WH
6
3
52
31 30
70
17
BL
BL
161
BL
62
BLUE
GR
BL
4
1
62
2
3
Tap Relay
53
 
302
43
31
AG HEATER
FUSE
FUSE
GR
/
YL
RD 60
GR
53
Option
Wiring Diagram 2/3
BL
BR
YL
1
8
NA
2
3
3
R
D
5
NA
1
Y
L
6
3
1
3
5
2
B
L
1
NOISE FILTER
NA
NA
8
1
3
9
8
5
G
R
2
GR/
YL
3
5
4
8
2
Y
L
7
CON4-1
2
2
O
R
nly
B
L
1
FUSE
Power
2
1
7
4
4
2
4
RD-1
Black
1
3
POWER CORD
6
5
R
D
4
2
1
1
3
1
2
V
L
5
BL
B
L
1
GR
/
YL
RD
O
R
Yellow
3
B
L
4
B
L
4
BL
6
7
4
4
3
6
FUSE
R
D
1
Y
L
2
4
3
6
1
1
RD
3
4
WASHING
5
Heater
2
6
3
Tap Relay
R
D
HEATER
3
2
NATURE
3
BL
W
H
2
Buzzer
Display POWER
YL
G
R
BR
Main PWB&DISPLAY PWB
DATA LINKER
9
7
3
2
Y
L
5
DISPLAY 
1
2
4
B
R
B
R
70
171
321
302
Tap Relay
320
171
02
43
320
BL
BL
43
60
BL
16
Wiring Diagram 3/3
17
PCB Layout (Main)
LCD Display
LCD Display
Circulation Pump
LCD Display
LCD Display
AG SENSOR
Measure R impossible
here Just Check cut-off
LCD Display
LCD Display
Hall Sensor Control
LCD Display
LCD Display
Thermistor
LCD Display
LCD Display
Motor Stator Control
V ~ U / U ~ W
/ W ~ V
R : 8 ~11Ω
W  
U  
V
LCD Display
LCD Display
PCB POWER
LCD Display
LCD Display
AG
LCD Display
LCD Display
LCD Display
LCD Display
LCD Display
Vibraion sensor Control
LCD Display
LCD Display
Heater
LCD Display
LCD Display
Display Power
Pressure Switch
&
Aqua stop
&
Measure Hz impossible
Here. Just Check cut-off
Common
Main Valve
3.5~4.5kΩ
Pre Valve
3.5~4.5kΩ
AG Valve
3.5~4.5kΩ
Short
Common
Common
Common
Hb
(5~15KΩ)
Aqua 
stop
Long
LCD Display
LCD Display
Inlet Valve Control
Door S/W
&
DrainPump
Thermistor for wash
Ciculation
Pump
(152~176Ω)
Door
S/W
Drain
Pump
(152~176Ω)
Thermistor for AG
Page of 53
Display

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