Samsung NV75N7570RS Service Manual page 29

4-2-4 C-20
No
Connect the sensor.
The sensor is out of order.
Replace the sensor
This document can not be used without Samsung's authorization.
Sensor short case
Is the sensor wire
connected properly ?
Yes
No
Does the voltage change as the humidity,
temperature and weight change?
No
does the symptom continue?
Perform the operation again and
Check if it is working properly.
Sensor Code(C-20)
Sensor open case
Is the sensor terminal part
of the PCB shorted?
No
Yes
S/W Code.
After power on,
Yes
Replace the PCB
Check if the voltage of the GND and sensor changes
Using a digital multi-meter by forcefully changing
the humidity, Temperature and weight.
(CN306, Upper sensor : Pin 3,
Lower sensor : Pin 5,
ground : Pin 2,4,6)
- 27 -
Yes
Remove any foreign substance
From the shorted part