Daewoo KOC-910K0P Service Manual page 40

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 dis-
play comes on.
*Cause: RELAY 1 does not operate.
M/W
STATE
RELAY 1 ON
RELAY 1 OFF
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.
LAMP,
TRAY
STATE
RELAY 4 ON
RELAY 4 OFF
3) When touching M/W button, oven lamp turn on and fan motor does not rotate but cook indicator in display
comes on.
*Cause: RELAY 5 does not operate.
FAN
STATE
RELAY 5 ON
RELAY 5 OFF
D9
1N4148
RY1
G5G-1A-DT 24V
POINT A
D12
1N4148
RY4
CS11-24SH
POINT A
D13
1N4148
RY5
CS11-24SH
POINT A
B
Q2
C106M
+5V DC
GND
B
Q9
C106M
+5V DC
GND
B
Q10
C106M
+5V DC
GND
39
A
46
POINT B
GND
+24V DC
A
39
POINT B
GND
+24V DC
A
40
POINT B
GND
+24V DC