LG GR-K192AF Service Manual - Page 18

Switch input circuit, 2-6. Temperature sensor circuit

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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 Outside sensor Check point POINT A Voltage POINT B Voltage POINT C Voltage Normal(-30°C~50°C) 0.5V~4.5V Shorted 0V Open 5V - 18 -

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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.
MICOM function and circuit description
- 18 -
Sensor
Check point
Normal
(-30°C~50°C)
Shorted
Open
Left compartment sensor
POINT
Voltage
Right compartment sensor
POINT
Voltage
0.5V~4.5V
0V
5V
Outside sensor
POINT
Voltage
A
B
C