LG GC-B379S*QA Service Manual page 31

MICOM FUNCTION & PCB CIRCUIT EXPLANATION
5. TEMP SENSOR CIRCUITS, DOOR OPENING SENSING
The above circuit reads surrounding temperature, FREEZER temperature, REFFIGERATOR temperature into MICOM( IC1). OPEN or SHORT
state of each SENSOR is as follows
SENSOR
RT SENSOR
FREEZER SENSOR
REFRIGERATOR
SENSOR
DEFROST SENSOR
CHECK POINT
POINT A Voltage
POINT B Voltage
POINT C Voltage
POINT D Voltage
Measure point
Refrigerator door
CLOSE
OPEN
NORMAL
(-30°C~50°C)
0.5V ~ 4.5V
NO.25 OF IC 1 (MICOM)
5V(S/W of 2 , 1 is OFF state)
0V(S/W of 2 , 1 is ON state)
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SHORT OPEN
0V 5V