WD-10480TP, WD-10490TP - LG Washing Machine Service Manual (repair manual). Page 22

PWB ASSEMBLY

PWB ASSEMBLY

1 2

Replace the sensor 
(pressure).

Replace the PWB
Assembly.

Repair drain hose

Remove foreign
material.

Reconnect or repair the
connector

Replace the pump
assembly

Replace the PWB 

Checking voltage between two pins as press
the power button is the voltage 220-240V~?

Is the drain hose twisted or frozen?

Is the impeller of the drain pump clogged?

Is the connector disconnected,
disassembled?

Is the coil of drain pump cut-off?
(resistance of coil is 90~160

Ω

)

When checking voltage between connectors
(

, 

)on spinning, is the voltage 

220 - 240V~  as the figure?

When pressing [Spin] and [Temp.] at the
same time after draining, is  the water level
frequency 252 or more?  
When pressing  [Spin] [Temp.] buttons at the
same time while wash, is the water level
frequency between 230 - 245V~?