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CONDITION CHECK RESULT CAUSE REMEDY
No microwave
oscillation.
No continuity.
Continuity.
Defective PCB
assembly
Replace PCB
assembly
Disconnect the
wire leads from
relay 2 and
check continuity
of relay 2.
(Operate the unit)
Abnormal
Normal
Defective high
voltage
transformer.
Replace high
voltage
transformer.
Check high vol-
tage transformer
Normal
Normal
Abnormal
Defective high
voltage diode.
Replace high
voltage diode.
Check high vol-
tage diode
Abnormal
Defective high
voltage capacitor.
Replace high
voltage capacitor.
Check high vol-
tage capacitor
Abnormal
Defective
magnetron.
Replace
magnetron.
Check
magnetron.
(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run.
(Display operates properly)
Output is full power
when you set lower
power level.
Abnormal.
Disconnect the
wire leads from
relay 2 and check
continuity relay 2.
(Operate the unit)
Defective PCB
assembly.
Replace PCB
assembly.
NOTE : • Make sure the wire leads 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.
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Only for training and service purposes