3. When there is no microwave oscillation
1) When pressing START button, oven lamp does not turn on.
Fan motor does not rotate, but cook indicator in display comes on.
* Cause : RELAY 2 does not operate. refer to Circuit Diagram (Point 3)
- Check method
2) When pressing START button, oven lamp turns on.
Fan motor and turntable rotate and cook indicator in display comes on.
* Cause : RELAY 1 does not operate.
➝
refer to Circuit Diagram (Point 2)
- Check method
* Cause : RELAY 3 does not operate.
➝
refer to Circuit Diagram (Point 6)
- Check method
5. When the door is opened during operation, the count down timer does not stop.
refer to Circuit Diagram (Point 1)
-Check method
6. When the digital clock does not operate properly.
refer to Circuit Diagram (Point 5)
* If clock does not keep exact time, you must check resistor R17, 18, transistor Q11
STATE
POINT
RELAY 2 ON 5VDC GND
RELAY 2 OFF GND 12VDC
STATE
POINT
RELAY 1 ON 5VDC GND
RELAY 1 OFF GND 12VDC
STATE
POINT
1) DOOR OPEN OPEN 5VDC
2) DOOR CLOSED CLOSE GND
CHECK NO METHOD REMEDY
1 Check the stage (ON, OFF) of the door open monitor switch by Replace door open monitor
resistance measurement. switch.
POINT WAVE FORM
1
T
5V
0V
T:20ms(50Hz)
AB
AB
STATE
POINT
RELAY 3 ON 5VDC GND
RELAY 3 OFF GND 12VDC
AB
AB
➝
➝
4. When there is no grill oscillation.
➝
29
To Next Page
Loading...
