Samsung RF28R7201 AA Series Service Manual page 56

TROUBLESHOOTING
※ R Self-diagnostics check list
LED
F R
compartment
compartment
Item Diagnostic method
Freezer The voltage of MAIN PCB CN20-"10"
↔ "12": shall be between 4.5V~1.0V
Sensor
Fridge The voltage of MAIN PCB CN20-"9"
↔ "11": shall be between 4.5V~1.0V
Sensor
Freezer
The voltage of MAIN PCB CN20-"6" ↔
defrosting "8": shall be between 4.5V~1.0V
sensor
Fridge
The voltage of MAIN PCB CN20-"5"
↔ "7": shall be between 4.5V~1.0V
defrosting
sensor
External air The voltage of MAIN PCB CN60-"3"
↔ "5": shall be between 4.5V~1.0V
sensor
Flex-Zone The voltage of MAIN PCB CN40-"18"
↔ "20": shall be between 4.5V~1.0V
sensor
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