Samsung RF23HT Series Service Manual

85TROUBLESHOOTING9) If PANTRY Sensor has troubleERROR CodeBad contact of connector/ insert correctlyIs MAIN PCBConnector CN30 and CN76 insertcorrectly?Is Pantry Sensornormal?Is the voltage betweenMAIN PCB Connector CN30-"9"(Yellow)and REG1-GND normal?Is the input voltage of IC01MICOM Pin #2 normal?StartNOYESYESYESYESReplace temperature sensorNORecheck the wiring connectionNO(0.6V > Measurement < 4.6V)Check the iced-solder, solderbridging, disturbed solderNONo trouble with PCB and temperature sensor.Recheck the bad contact of the connection.** Measuring point of resistance value according to Sensor**Flex : CN30 ”9” ↔ CN76 ”1” measuring resistance value** 0Ω: Short trouble / Ω∞: Open troubleSensor MICOM/Connector numberVoltage measured between 4.6V ~ 0.6V.Measuring voltage of IC01 MICOM #2,CN30-"9"(Yellow)and REG1-GNDfrom PCB typical Ground part are similar.→ Check the measure on the voltage of Resistance, R314due to the SMD MICOM☞ Checking method of PANTRY Sensor resistanceCN30-"9"(Yellow) ↔ CN76-”1” (Gray)- Compare the temperature table after measurement.DATA1.Temperature tableRefer to circuit diagram in the manualPantry Connector CN30-"9"(Yellow) toREG1-GND PCB typical Ground☞ Checking method of PANTRY Sensor resistance CN30-"9"(Yellow) ↔ CN76-”1” (Gray)- Compare the temperature table after measurement.Measuring voltage of CN30-"9"(Yellow)↔REG1-GND are asbelowPCB Typical GroundREG1-GNDStartYESYESYES