Samsung RFG297AARS Service Manual

Also see for RFG297AABP: Specifications

Contents

67TROUBLESHOOTING4) If Ambient Sensor has troubleBad contact of connector/ insert correctlyIs MAIN PCBConnector CN31 insertedcorrectly?Is Ambient Sensorunit normal?Is the voltage betweenMAIN PCB Connector CN31#1(Yellow)and REG1, HEAT SINK normal?Is the input voltage ofIC01 MICOM #72 normal?StartNOYESYESYESYESReplace the temperature sensorNORecheck the wiring connectionNO(0.6V > Measurement < 4.6V)Check the iced-solder, solderbridging, disturbed solderNONo trouble with PCB and temperature sensorRecheck the bad contact of the connection** Measuring point of resistance value according toSensor **Ambient : CN31#1 ® #4 measuring resistance value** Placed in the right top table of upper hinge.** 0ʃ: Short trouble / ʃ: Open troubleSensor MICOM/Connector numberVoltage measured between 4.6V ~ 0.6V.Measuring voltage of IC01 MICOM #72,CN31#1(Yellow) and REG1, HEAT SINK fromPCB typical Ground part are similar.ª Check the measure on the SENSOR MARKING #7(R307)due to the SMD MICOMó Checking method of Ambient Sensor resistanceCN31#1(Yellow) ® #4(Yellow)- Compare the temperature table aftermeasurement.DATA1.Temperature tableERROR CodeRefer to circuit diagram in the manualAmbient Connector CN31#1(Yellow) toREG1, HEAT-SINK PCB typical Groundó Checking method of Ambient Sensor voltage- Measure the voltage of Sensor Check Point #7(IC01 MICOM #72)on PCB or CN31#1(Yellow) ® REG1, HEAT SINK- Compare the temperature table after measurement.Measuring voltage of CN31#1(Yellow) ® REG1, HEAT SINK are asbelowTypical PCB GroundREG1 Heater SinkStartYESYESYES