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3) Case of no microwave oscillation
(1) When touching M/W button, oven lamp turns on and Fan motor and turntable rotate, and cook
indicator in display comes on.
* Cause: RELAY 1 does not operate.
- Check method
STATE POINT A POINT B
RELAY 1 ON
+5V DC GND
RELAY 1 OFF
GND +24V DC
(2) When touching M/W button, oven lamp does not turn on and turntable motor does not rotate
but cook indicator in display comes on.
* Cause: RELAY 4 does not operate.
- Check method
STATE POINT A POINT B
RELAY 4 ON
+5V DC GND
RELAY 4 OFF
GND +24V DC
(3) When touching M/W button, oven lamp turns on and fan motor does not rotate
but cook indicator in display comes on.
l Cause: RELAY 5 does not operate.
- Check method
STATE POINT A POINT B
RELAY 5 ON
+5V DC GND
RELAY 5 OFF
GND +24V DC