LG LFC20760SW - Buzzer Drive Condition Check; Open Door Detection Circuit Check

part part
MOTOR OFF 2V or less 0V
MOTOR ON 13V~15V 0V
a b
3. Cooling motor driving circuit (machine room)
1. This circuit makes standby power 0 by cutting off power supplied to Iss inside of the fan motor in the fan motor OFF.
2. This circuit prevents over-driving the fan motor by cutting off power applied to the fan motor in the lock of fan motor by
sensing the operation RPM of the fan motor.
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