LG GR-642APA Service Manual page 27

7-2-5 TEMPERATURE SENSOR CIRCUIT
The upper CIRCUIT reads FREEZER and REFRIGERATOR temperature, and DEF-SENSOR temperature for defrosting
and the indoor temperature for compensating for the surrounding temperature, into MICOM.
OPENING or SHORT state of each TEMPERATURE SENSOR are as follows.
SENSOR
Refrigerator Sensor
Defrosting Sensor
Room Temperature Sensor
CHECK POINT
POINT A Voltage
POINT B Voltage
POINT Voltage
C
NORMAL(-30 °C ~ 50 °C)
0.5 V ~ 4.5 V
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SHORT-CIRCUITED OPEN
0 V 5 V