WD-11120FB - LG Washing Machine Service Manual (repair manual). Page 23

PWB ASSEMBLY (MAIN)

2

1

(5)

(6)

Repair drain hose.

Remove foreign material.

Reconnect or repair the
connector.

Replace the pump
assembly.

Replace the PWB

assembly (Main) .

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?

AC 220-240V

PWB ASSEMBLY (MAIN)

Spin

Option

Replace the sensor 

(pressure).

Replace the PWB
assembly (Main).

When pressing [Option] and [Spin] at the same time
after draining, is  the water level frequency 252 or
more?  
When pressing [Option], [Spin] buttons at the
same time while wash, is the water level
frequency between 220 - 240?

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