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(TROUBLE 3) Oven does not operating microwave cooking
CONDITION
No microwave oscillation.
Spark occurring.
Spark occurring.
CAUSE
Defective relay 2 of P.C.B.
• Defective high voltage
transformer.
• Defective of thermal Cut-
out high voltage trans-
former.
Defective high voltage
capacitor.
Defective high voltage
diode.
Defective magnetron.
Low AC input voltage.
Open or loose wiring to
above components.
Using metallic ware and
allowing it to touch the
oven wall.
Ceramic ware trimmed in
gold or silver powder is
used.
Grill rack or roti-bar is using
in no load condition.
28
TEST PROCEDURE OR
CORRECTION
Test procedure relay 2 of
P.C.B.
Test procedure high voltage
transformer and thermal
Cut-out of high voltage
transformer.
Test procedure high voltage
capacitor.
Test procedure high voltage
diode.
Test procedure
magnetron.
Use the microwave oven at
adequate line voltage.
Check and repair wiring.
Do not use metallic ware for
cooking except where noted
in the cookbook.
Do not use any type of cook
ware with metallic trimming.
Do not use the oven at
microwave and combination
mode with the grill rack or
roti-bar placed in the cavity
when the oven is empty.
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