LG LSE3092ST Service Manual page 63

FAILURE MODE FLOW CHART
Door Lock System Failure,F-10?
Note :
Just after self-clean start, the door lock motor
starts to rotate.
During that time if the door lock switch does
not operate properly after rotating twice, then
supervising circuit detects a Door Lock failure
and the F-10 error code appears.
Power Off
1
Is the disconnect or loose
connector?
1. Between Main PCB and
Relay PCB (CN7,CN10)
2.Electric wiring of relay PCB(CN12)
3.Electric wiring of Locking Motor and Micro Switch
4.Electric wiring of CN4 of Main PCB
CN7
Yes
Reconnect
Yes
or repair
the connector
CN12 CN4
Yes
Power Off
2
Is the door lock switch
(micro switch) normal?
measure the resistance of
door lock switch
Power Off
3
Is the resistance of the locking
motor normal ?
measure the resistance of
locking motor
Normal : approximately 2.6
Abnormal : infinite or below 5
Replace the Relay PCB(EBR52349701)
6-7
Yes
Replace the
micro switch
normally open type
Normal Abnormal
Yes
No Replace the
locking motor
Ω
Yes