DOWNLOAD LG 41472 Service Manual ↓ Size: 10.52 MB | Pages: 60 in PDF or view online for FREE

Model
41472
Pages
60
Size
10.52 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
41472.pdf
Date
PREV: LG 41379 Service Manual

LG 41472 Service Manual ▷ View online

44
9-5. INLET VALVE ASSEMBLY
Circuit
diagram
Circuit in the MAIN PWB
INLET
VALVE
Vac
Rs
Vdc
Cg
Rg
IC
MICOM
Cs
PCB
CONNECTOR
Inlet valve driving circuit
Function
Test
points 
and 
Result
Depending on the cycle and water temperature, the controller will energize  the hot or
cold water valve solenoids to meet the selected water temperature.
After pull out the connector of defective valve, check the resistance.
Test points
(1)-(2)
Result
0.8-1.2 kΩ
Circuit diagram
MAIN
WASH
AG
VALVE
PRE
WASH
BLEACH
HOT
VALVE
1
2
1
2
1
2
1
2
1
2
RD
BL
BL
RD
NA
WH
NA4
VT
GY YL
BL
BL4
BL3
4
3
2
1
1
2
3
1
2
3
4
3
2
1
4
3
2
1
4
3
2
1
COMMON
(BK)
MIAN PWB
INLET VALVE
* Each circuits of loads in wiring diagram are all same.
(1)
(1)
(2)
(1)
(2)
(2)
(1)
(2)
(1)
(2)
(1)
(1)
(2)
(1)
(2)
(2)
(1)
(2)
(1)
(2)
45
9-6. HEATER ASSEMBLY
Circuit
diagram
Circuit in the MAIN PWB
MICOM
12V
Heater
Vac
X100
43
43
Tab Relay
Heater driving circuit
Circuit diagram
MAIN PWB
(X71)
3 4
3 4
3 4
3 4
3 4
3 4
(X135)
(X134)
BK
BL
YL
RD
GY
BL
BK
BK
Vac
WASH
HEATER
STEAM
GENERATOR
HEATER
YL
FUSE
FUSE
Function
Test points
Result
1. The Wash Heater is designed to raise the wash water to the desired temperature
selection during certain wash cycles.
Wash Heater
Steam Generator Heater
* Each circuits of loads in wiring diagram are all same.
Wash Heater
Steam Generator Heater
Test Points
Result
(1) to (2)
12-18 Ω
Test Points
Result
(1) to (2)
12-18 Ω
(1)
(2)
(2)
(1)
46
9-7. THERMISTOR ASSEMBLY
Circuit
diagram
Circuit in the MAIN PWB / Circuit diagram
MAIN PWB
MICOM
NA3
BL
BN
WH
1
2
1
2
1
2
1
2
WH
WASH
THERMISTOR
STEAM
GENERATOR
THERMISTOR
1
2
3
4
5
6
1
5V
5V
R
R
R
R
C
C
C
C
2
3
4
5
6
Function
Test
points
The thermistor (temperature sensor) is used to monitor water temperature in the tub.
Wash Thermistor
(2)
(1)
Steam generator Thermistor
(1) (2)
(1) (2)
47
Result
Wash Thermistor
Test Points
(1) to (2)
Result
(tolerance ±5%)
39.5 kΩ
26.1 kΩ
12.1 kΩ
8.5 kΩ
3.8 kΩ
2.8 kΩ
Remarks
At 86°F (30°C)
At 104°F (40°C)
At 140°F (60°C)
At 158°F (70°C)
At 203°F (95°C)
At 221°F (105°C)
Page of 60
Display

Click on the first or last page to see other 41472 service manuals if exist.

RANDOM: