LG WM3570H A Series - Pump Motor Assembly Testing

8-4. PUMP MOTOR ASSEMBLY
Wiring
diagram
Circuit in the MAIN PWB Wiring Diagram
MICOM
IC
R
5V
Rg
Cg
Vdc
Rs
Cs
PCB
CONNECTOR
PUMP
Vac
2
1 4
3
Pump Driving circuit
MAIN PWB
NA2
1 2 3 1 2 3
3 2 1
3 2 1
1 2 3
4
1 2 3 4
BL3
SB
SB
SB
N B K B
BN
DRAIN
PUMP
CIRCULATION
PUMP
BK
Object
Function
Test
points
Result
* Each circuits of loads in wiring diagram are all same.
Two pump motors are used to drain the tub and to circulate the water / detergent solution.
Drain Pump
Drain Pump Circulation Pump
Circulation Pump
Test Points Result
(1) to (2) 10-20 Ω
Test Points Result
(1) to (2) 18-30 Ω
T.P
For Drain For Circulation
(1)(2)
(2)
(1)
(1) (2)
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