LG LMV1683ST Service Manual page 19

After power on, does the
product operate?
No
1 Repeat Door Open and close
more than three times.
Does product operate?
No
2 Is there any beep sound
in continuity test between
TAB1 and TAB2?
No
Alternate with
Yes
explanation
(Refer to the
Note)
Yes
PCB
no problem
[Note]
If something is caught in the door or in the sealing area, the
microwave oven cannot operate safely. The latch switches
and monitor switch will prevent operation.
-19-
3 While the product is
operating under EZ-ON start,
is the voltage of both ends
of the D32 over 8 V?
No
4
Replace the PCB.
EBR67471707
Replace the
Yes
Relay 2