Led On - Samsung AR12JSALBWKNCV Service Manual

Detach the assembled sensor from the PCB sensor
connector and measure the sensor resistance with
ohmmeter(tester)
YES
Connect the sensor to PCB connector (4pin in)
supply power and measure the voltage of the
connector accordingly
Below 0.5V or Over 4.5V
Replace the PCB
Replace the sensor
NO
Sensor resistance value : 20°C- 6.0836kohm
8-4
30°C - 4.1331kohm
35°C -3.4352kohm
40°C- 2.8699kohm