LG LDE4415ST Service Manual page 75

3
Is the door lock switch (micro
switch) normal?
measure the resistance of
door lock switch normally

open type
NC
COM
Yes
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
TROUBLESHOOTING
No
Replace the micro
switch
Abnormal Normal
No
Replace the lock
motor
7-12