LG LMV2015SW Service Manual page 24

Turn on automatically
Is the product turn on
automatically without pushing
the start key?
Yes
1 Repeat Door Open and close
more than three times.
Dose the product operate?
No
Power Off
2 Is there any beep sound
in continuity test between
the ends of latch board?
- secondary switch
(Door should be closed.)
Yes
Power ON
3
When door is closed, does
the oven lamp turn on?
Yes
Alternate with
Yes
explanation
(Refer to the
Note)
Adjust the
No
Primary latch
board
(Refer to 9-1,
9-2)
Replace the
No
turntable Motor
-24-
4 When the door is opened, Is
the voltage of door sensing
part over 4V?
(Pin 1 to Pin 3 of CN4)
Yes
5 Is the voltage of both ends
of the D31over 8V?
No
6 Is there any beep sound in
continuity test between the
ends of two Pin?
(Pin 1 of CN3 and Pin 5 of
CN1)
Replace the
No
PCB
(EBR64419602)
Replace the
Yes
PCB
(EBR64419602)
Replace the
No
PCB
(EBR64419602)
PCB No
Yes
Problem