3.When there is no microwave oscillation
1)When touching START pad, oven lamp does not turn on.
Fan motor do not rotate, but cook indicator in display comes on.
✻ Cause : RELAY 2 does not operate. → refer to Circuit Diagram (point 3) - Check method
| POINT | A | B |
STATE |
| ||
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| |
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RELAY 2 ON |
| GND | |
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RELAY 2 OFF |
| GND |
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2)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. → refer to Circuit Diagram (point 2) - Check method
| POINT | A | B |
STATE |
| ||
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| |
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RELAY 1 ON |
| GND | |
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RELAY 1 OFF |
| GND | |
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4.When there is no grill oscillation.
✻Cause : RELAY 3 does not operate. → refer to Circuit Diagram (point 6) - Check method
| POINT | A | B |
STATE |
| ||
|
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| |
|
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RELAY 3 ON |
|
| GND |
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RELAY 3 OFF |
| GND | |
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5. When the door is opened during operation, the count down timer does not stop.
→refer to Circuit Diagram (point 1) - Check method
| POINT | A | B |
STATE |
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| |
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1) DOOR OPEN |
| OPEN | |
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2) DOOR CLOSED |
| CLOSE | GND |
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CHECK NO | HETHOD | REMEDY |
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1 | Check the stage(ON, OFF) of the door open monitor | Replace door open monitor switch. |
| switch by resistance measurement. |
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6.When the digital clock does not operate properly.
→refer to Circuit Diagram (point 5)
POINT
WAVE FORM
A
T: 20 ms(50Hz)
❈If clock does not keep exact time, you must check resistor R7,8,C5.
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