LG GR-J303TS Service Manual page 18

3-2-6. TEMPERATURE SENSING CIRCUIT
Above circuits consist of the upper sensor, middle sensor, lower sensor for adjusting setup temperature at the upper, middle
and lower compartment, the ambient temperature sensor to detect ambient air temperature, the upper defrost sensor and
the middle defrost sensor attached to the evaporator at the upper, middle compartment to detect the defrost return
temperature. Status in short or open are as follows:
Sensor
Ambient temp. Sensor
Upper Sensor
Middle Sensor
Lower Sensor
Upper Defrost Sensor
Middle Defrost Sensor
Check points Normal (-30 °C ~ 50 °C)
POINT Voltage
POINT Voltage
POINT Voltage
POINT Voltage
POINT Voltage
POINT Voltage
In Short
0.5V ~ 4.5V
- 18 -
(LED:6871JB1400, LCD:6871JB1399)
In Open
0V 5V