Daewoo KOR-6L4B3W - Page 28

27
3. When there is no microwave oscillation
1) When touching the
START pad, oven lamp does not turn on.
Fan motor does not rotate, but cook indicator in display comes on.
- Check method
2) When touching the START pad, oven lamp turns on.
Fan motor and turntable rotate and cook indicator in display comes on.
- Check method
4. When the door is opened during operation, the count down timer does not stop.
-Check method
5. When the digital clock does not operate properly.
Refer to Circuit Diagram.
* If clock does not keep exact time, you must check R12,R17,D8,C3 and zener diode ZD1.
STATE
POINT
AB
RELAY 2 ON 5VDC GND
RELAY 2 OFF GND 15VDC
STATE
POINT
AB
RELAY 1
ON 5VDC GND
RELAY 1 OFF GND 15VDC
STATE
POINT
AB
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
IC 1 PIN 8
T:20ms(50Hz)