LG LUTE4619SN Service Manual page 92

3
Is the door lock switch (micro switch)
normal?
measure the resistance of door lock
switch T normally open type
Yes
TROuBLEShOOTING
No
Replace the
micro switch
Abnormal Normal
4
Is the resistance of the lock motor
normal ?
measure the resistance of lock motor
Normal : approximately 2.6kΩ
Abnormal : infinite or below 5 Ω
Yes
Replace the Relay PCB.
If the same phenomenon occurs even though after
replace Relay PCB, you should replace the Main
PCB.
8-13
No
Replace the
lock motor