37
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
D7
D7(KOC-9N3T7S/R)
D8
D8(KOC-9N2T7S/R)
Q5(KOC-923T9S/R)
B
A
RY1(KOC-9N3T7S/R)
RY2(KOC-9N2T7S/R)
30
STATE
RELAY 4 ON
RELAY 4 OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
LAMP
TRAY
B
A
RY4(KOC-9N3T7S/R)
RY5(KOC-9N2T7S/R)
D11
(KOC-9N3T7S/R)
D14
(KOC-9N2T7S/R)
Q8(KOC-9N2T7S/R)
Q9(KOC-9N3T7S/R)
34
STATE
RELAY 5 ON
RELAY 5 OFF
POINT A
+5V DC
GND
POINT B
GND
+24V DC
FAN
B
A
RY5(KOC-9N3T7S/R)
RY6(KOC-9N2T7S/R)
D15
(KOC-9N3T7S/R)
D16
(KOC-9N2T7S/R)
Q9(KOC-9N2T7S/R)
Q10(KOC-9N3T7S/R)
35
Summary of Contents for KOC-9N2T7S
Page 5: ...3 EXTERNAL VIEW 1 OUTER DIMENSION 542 503 329 4 ...
Page 30: ...29 10 WIRING DIAGRAM ...
Page 36: ...35 MEASURE POINT OF KOC 9N2T7S R MP1 GND MP2 ...
Page 37: ...36 MP1 GND MP2 MEASURE POINT OF KOC 9N3T7S R ...
Page 41: ...40 13 P C B CIRCUIT DIAGRAM KOC 9N2T7S R ...
Page 42: ...41 KOC 9N3T7S R ...
