LG LSMX214ST Service Manual page 37

3. Open Door Detection Circuit Check
Measurement
Freezer/
Location
Refrigerator Door
Closed
Open
8-2-3 Temperature Sensor Circuit
The upper circuit reads refrigerator temperature, freezer temperature, Icing sensor temperature and defrost 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
Freezer sensor
Refrigerator sensor
Defrosting sensor
Room Temperature sensor
Icing sensor
CHECK POINT NORMAL (-30°C ~ 50°C)
POINT Voltage
POINT Voltage
POINT Voltage
POINT Voltage
POINT Voltage
- 37 -
Pin 11 & 12 of con4 Ref.Door
Pin 5 & 6 of con6 Fre.Door
5V
0V
SHORT-CIRCUITED
0.5V ~ 4.5V
OPEN
0V 5V