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.
- Check method
STATE | POINT A | POINT B | |
|
|
|
|
RELAY 1 | ON | +5V DC | GND |
RELAY 1 | OFF | GND | +24V DC |
|
|
|
|
(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.
- Check method
STATE | POINT A | POINT B | |
|
|
|
|
RELAY 4 | ON | +5V DC | GND |
RELAY 4 | OFF | GND | +24V DC |
|
|
|
|
(3)When touching M/W button, oven lamp turns on and fan motor does not rotate but cook indicator in display comes on.
lCause: RELAY 5 does not operate.
-Check method
STATE | POINT A | POINT B | |
|
|
|
|
RELAY 5 | ON | +5V DC | GND |
RELAY 5 | OFF | GND | +24V DC |
|
|
|
|
33
