33
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
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 6 does not operate.
- Check method
3) When touching M/W button, oven lamp turns on and fan motor does not rotate but cook indicator in display
comes on.
*Cause: RELAY 7 does not operate.
- Check method
STATE
RELAY 1 ON
RELAY 1 OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
D14
Q6
STATE
RELAY 6 ON
RELAY 6 OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
D16
RY6
Q10
40
STATE
RELAY 7 ON
RELAY 7 OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
D17
RY7
Q11
43
Summary of Contents for KOC-154K8S
Page 30: ...29 10 WIRING DIAGRAM...
Page 37: ...36 13 P C B CIRCUIT DIAGRAM...