48842800 - LG Washing Machine Service Manual (repair manual). Page 37

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36
9-4. 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
1
2
3
1
2
3
BL1
SB
BK
BN
DRAIN
PUMP
1
2
3
1
2
3
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
Test Points
Result
(1) to (2)
10-20 
T.P
For Drain
(1)(2)
(1)
(2)
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