Sunbeam MA-6400W2 Service Manual page 23

(TROUBLE 3) No microwave oscillation even though oven lamp and fan motor run.
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 the timer
switch of timer
motor.(cooking
state)
Check high vol-
tage transformer
Check high vol-
tage capacitor.
Check high vol-
tage diode.
Check
magnetron.
RESULT
No continuity.
Continuity.
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
5-14
CAUSE
Defective timer
motor.
Defective high
voltage
transformer.
Defective high
voltage capacitor.
Defective high
voltage diode.
Defective
magnetron.
REMEDY
Replace timer
motor.
Replace high
voltage
transformer.
Replace high
voltage capacitor.
Replace high
voltage diode.
Replace
magnetron.