Samsung RF23HT Series Service Manual

82TROUBLESHOOTING6) If F Sensor has troubleERROR CodeBad contact of connector/ insert correctlyAre MAIN PCBConnector CN30 insertedcorrectly?ISF Sensor unit normal?Is the voltage betweenMAIN PCB Connector CN30-”4”(Yellow) andREG1-GND normal?Is the input voltage ofIC01 MICOM #7 normal?StartNOYESYESYESYESReplace 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 **F : CN30-"1" ↔ "4" measuring resistance value** 0Ω: Short trouble / Ω∞: Open troubleSensor MICOM/Connector numberVoltage measured between 4.6V ~ 0.6V.Measuring voltage of IC01 MICOM #7,CN30-”4”(Yellow) and REG1-GND fromPCB typical Ground part are similar.→ Check the measure on the voltage of Resistance,R309 due to the SMD MICOMDATA1.Temperature tableRefer to circuit diagram in the manualF Connector CN30-”4”(Yellow) toREG1-GND PCB typical Ground☞ Checking method of F Sensor resistanceCN30-"1" ↔ "4" (Yellow)- Compare the temperature table after measurement.☞ Checking method of F Sensor voltage- Measure the voltage of Resistanec, R309(IC01 MICOM #7) on PCB orCN30-"4"(Yellow) ↔REG1-GND- Compare the temperature table after measurement.Measuring voltage of CN30-"4"(Yellow)↔REG1-GND are as below.PCB Typical GroundREG1-GNDStartYESYESYES1 2 4 100mm3Cut as close asStrip: 10mmpossible to thesensorStrip : 10mmCover Sensor[Strip the end of Main wire] [Cut the Service Sensorwire and strip]5678[Assemble Cover Sensor& Sensor][Connect Sensor and Main wire]by twisng conductors[Fix with insulaon tape][Assemble the Cover Sensor][Disassemble the Cover Sensor] [Cut the Sensor wire]