LG LSE4613ST Service Manual page 71

CHECKING FLOW CHART BY FAILURE
3
Is the door lock switch
(micro switch) normal?
measure the resistance of
door lock switch normally open type
4
Is the resistance of the
lock motor normal ?
measure the resistance of
lock motor
Normal : approximately 2.6kΩ
Abnormal : infinite or below 5
No Replace the
micro switch
Abnormal Normal
Yes
No Replace the
lock motor
Ω
Yes
Replace the Relay PCB.
If the same phenomenon occurs even though
after replace Relay PCB, you should replace the
Main PCB.
9-11