LG LMHM2237BD Service Manual page 20

Power Off
5 Is there any beeping sound
in the continuity test between
the ends of the latch board?
(Door should be closed)
Yes
6 Is the connector connected
to High Voltage Transformer
assembly disconnected or
disassembled?
No
Adjust the latch
No
board
(Refer to section
9-1,9-2)
Reconnect or
Yes
repair
the connector.
-20-
7 Is the resistance of the high
voltage Transformer out of
range?
Test Point
1. Primary winding: 0.2 ~ 0.5 Ohm
2. Secondary: 50 ~ 120 Ohm
3. Filament winding: 0 Ohm
No
Replace the
Yes
High Voltage
Transformer.