(2) CHECKOUT PROCEDURES FOR RELAY.
- PROBLEM (A) -
FAN motor and oven lamp turn on without touching
START key when the door is closed.
NO
YES
GOOD
Remove the mate connector of I/O CON from the circuit board.
Does the unit still operate?
NO
YES
Replace the circuit board
Defective
RELAY1
Replace
RELAY1
- PROBLEM (B) -
FAN motor and oven lamp turn on When the door is closed and START key is touched.
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| YES |
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| NO |
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GOOD | Measure the voltage at pin NO. | ||||||||||||
35 of U01 |
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| Voltage reading: 0 Vdc | |||||||||
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| 10 of U03 |
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| Voltage reading: about 15V | |||||||||
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| NO |
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| YES | |
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Replace the circuit board
Defective
RELAY1 or poor
connection of
RELAY1
Replace
RELAY1 or correct
the connection.