Daewoo KOT-170S0A, Service Manual

Page: 48 / 70

47
MEASURE POINT
4) When there is no microwave oscillation
When touching START pad, oven lamp does not turn on.
Fan motor does not rotate, but cook indicator in display comes on.
*Cause: RELAY 6 does not operate.
- CHECK METHOD
When touching START pad, oven lamp turns on.
Fan motor and turntable rotate and cook indicator in display comes on.
*Cause: RELAY 1 does not operate.
- CHECK METHOD
STAGE POINT
RELAY 6 ON
RELAY 6 OFF
A
+5VDC
GND
B
GND
+24VDC
STAGE POINT
RELAY 1 ON
RELAY 1 OFF
A
+5VDC
GND
B
GND
+24VDC
C
+24VDC
+24VDC