Daewoo KOT-150S0A, Service Manual

Page: 50 / 72

49
5)When the door is opened during operation, the Count down timer does not stop.
- CHECK METHOD
6) When the digital clock does not operate properly.
- CHECK METHOD
If clock does not keep exact time, you must check resistor R20, transistor Q6
STAGE POINT
1) DOOR OPEN
2) DOOR CLOSED
A
OPEN
CLOSED
B
+5VDC
GND
CHECK NO. METHOD REMEDY
1
Check the stage (ON, OFF) of the secondary interlock Replace secondary interlock switch.
switch by resistance measurement.
POINT WAVE FORM
A
B
T: 16.67 ms
T: 16.67 ms (60 Hz)