LG LMC1575BD Service Manual page 30

(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run.
(Display operates properly)
CONDITION
No microwave oscillation.
NOTE : • Make sure the wire leads are in the correct position.
• When Removing the wire leads from the parts, be sure to grasp the connector, not the wires.
• When removing the magnetron, be sure to install the magnetron gasket in the correct position and in good condition.
CHECK
Check wiring on
Magnetron.
Check inverter PCB
Check magnetron.
RESULT
Abnormal
Normal.
Abnormal
Normal.
Abnormal.
5-18
CAUSE
Defective wiring on
Magnetron
Defective
Defective magnetron.
REMEDY
Connect wire on
Magnetron
Replace
Replace magnetron.