LG GR-389SQF - Temp Sensor Circuits; Switch Input Circuit

5) TEMP SENSOR CIRCUITS
The above circuit reads the surrounding temperature, DEFROSTING temperature and FREEZER ROOM temperature into
MICOM(IC1). OPEN or SHORT state of each SENSOR is as follows.
6) SWITCH INPUT CIRCUIT
The following circuit is a test switch input circuit for checking the refrigerator.
- 24 -
(RTÐ SENSOR)
(DEFROST SENSOR)
(FREEZER COMPARTMENT
SENSOR)
SENSOR CHECK POINT NORMAL (-30¡C~50¡C) SHORT OPEN
ROOM TEMPERATURE
SENSOR
POINT A Voltage
DEFROST SENSOR POINT B Voltage 0.5V ~ 4.5V 0V 5V
FREEZER SENSOR POINT C Voltage