LG GR-K192UF Service Manual page 18

MICOM function and circuit description
5-2-5. Switch input circuit
The following circuit is the input circuit to detect the test switch signal to check the refrigerator.
5-2-6. Temperature sensor circuit
The following temperature sensor circuit consists of a sensor to detect the outside (ambient) temperature and sensors in the
left and right compartments for storing and seasoning Kimchi. The status of each sensor, whether open or shorted, is shown
below.
Sensor
Left compartment sensor
Right compartment sensor
Ambient temp. sensor
Check point
POINT A Voltage
POINT B Voltage
POINT Voltage
C
- 18 -
Normal(-30°C~50°C)
0.5V~4.5V
Shorted Open
0V 5V