LG GR-K24PS 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, sensors in the lid
left and right compartment, sensor in the drawer left and right compartment for storing and seasoning Kimchi. The status of
each sensor, whether open or shorted, is shown below.
CON5
CON4
Sensor
Drawer right compartment sensor
Drawer left compartment sensor
Lid right compartment sensor
Lid left compartment sensor
Outside sensor
CON3
CON2
Check point
POINT A Voltage
POINT B Voltage
POINT Voltage
C
POINT D Voltage
POINT Voltage
E
RAR2
10K
Normal(-30°C~50°C)
0.5V~4.5V
- 18 -
Shorted Open
0V 5V