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.
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 1
does not operate.
3) When touching M/W button, oven lamp turn on and turns on and fan motor does not rotate but cook indicator in
display comes on.
*Cause:
RELAY 5
does not operate.
STATE
RELAY 1
ON
RELAY 1
OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
M/W
D8
Q4
B
A
RY1
16
STATE
RELAY 4
ON
RELAY 4
OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
LAMP
TRAY
D11
Q7
B
A
RY4
23
STATE
RELAY 5
ON
RELAY 5
OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
FAN
D12
Q8
B
A
RY5
24