IfTheTroubleIsDetectedBySelf-Diagnosis; IfTheTroubleIsDetectedBySelf-Diagnosis - Samsung RFG298HD Service Manual

TROUBlESHOOTING

4-2-1.Ifthetroubleisdetectedbyself-diagnosis

- T heerrorofsensorwillbedisplayedonthefrontofdisplay.
whentheerrorofsensorisdetectedatinitialpowerON,theappliancewillnotoperatedanddisplayof
abnormalsensorpartwillblink.
- T heappliancewillnotstopoperatingwhentheerrorofsensorisdetectedduringoperationofthe
appliance.
Butnormalfreezingmightbenotoperatediftheapplianceisoperatedbytheemergencyoperation
mode.youwouldbettertochecktheapplianceaccordingtotheself-diagnosisofthemanual.
1)IfICEMaker(R)Sensorhastroubled
ERRORCode
DATA1.
Temperature table
** M easuringpointofresistancevalueaccordingto
Sensor**
ICEMAKER:CN90"1"↔ "7"measuringresistance
value**0Ω:Shorttrouble/Ω∞:Opentrouble
Refertocircuitdiagraminthemanual
SensorMICOM/Connectornumber
ConnectorCN90-"1"(Brown)and
ICE
Maker
J23JUMMPERPCBtypicalGround
Voltagemeasuredbetween4.6V~0.6V.
MeasuringvoltageofIC01MICOM#71,
CN90-"1"(Brown)andJ23JUMMPERfrom
PCBtypicalGroundpartaresimilar.
→  C heckthemeasureonthevoltageofResistance,
R914DUEtotheSMDMICOM
☞ C heckingmethodofICEMakerSensorresistance
CN90"1"(Brown)↔ "7"(Gray)
- C omparethetemperaturetableafterthe
measure.
Start
IsMAINPCBConnector
CN90insertedcorrectly?
yES
IsICEMakerSensor
unitnormal?
yES
Isthevoltagebetween
MAINPCBConnectorCN90-"1"(Brown)and
J23JUMMPERnormal?
yES
IsinputvoltageofIC01
MICOM#71normal?
yES
NotroublewithPCBandtemperaturesensor.
Recheckthebadcontactoftheconnection.
☞ CheckingmethodofICEMakerSensorresistance
- M easurethevoltageofResistanceR914(IC01MICOM
#71)onPCBorCN90"1"(Brown)↔ J23JUMMPER
- C omparethetemperaturetableafterthemeasure.
MeasuringvoltageofCN90-"1"(Brown)↔J23
JUMMPERareasbelow.
62
NO
Badcontactofconnector/insertcorrectly
NO
Replacethetemperaturesensor
NO(0.6V>Measurement<4.6V)
Recheckthewireconnectionpart
NO
Checktheiced-solder,solder
bridging,disturbedsolder.
PCBTypicalGround
J23JUMMPER