Samsung RFG298HD Service Manual page 69

TROUBlESHOOTING
7)IfFDEFSensorhastrouble
ERRORCode
DATA1.
Temperature table
** M easuringpointofresistancevalueaccordingto
Sensor**
F-DEF: C CN30-"5"↔CN76-"1"measuringresistance
value
**0Ω:Shorttrouble/Ω∞:Opentrouble
Refertocircuitdiagraminthemanual
SensorMICOM/Connectornumber
FDEF ConnectorCN30-"5"(Orange)to
J23JUMMPERPCBtypicalGround
Voltagemeasuredbetween4.6V~0.6V.
MeasuringvoltageofIC01MICOM#83,
CN30-"5"(Orange)andJ23JUMMPERfrom
PCBtypicalGroundpartaresimilar.
→  C heckthemeasureonthevoltageofResistance,
R310duetotheSMDMICOM
☞ C heckingmethodofFDEFSensorresistance
CN30-"5"(Orange) CN76-"1"(Gray)
↔
- C omparethetemperaturetableafter
measurement.
Start Start
Are
MAINPCBConnectorCN30andCN76
insertcorrectly?
yES yES
IS
FzDEFSensorunit
normal?
yES yES
Isthevoltagebetween
MAINPCBConnectorCN30-"5"(Orange)and
J23JUMMPERnormal?
yES yES
Istheinputvoltageof
IC01MICOM#83normal?
yES
NotroublewithPCBandtemperaturesensor.
Recheckthebadcontactoftheconnection.
☞CheckingmethodofFDEFSensorvoltage
- M easurethevoltageofResistance,R310(IC01MICOM#83)onPCB
orCN30-"5"(Orange) J23JUMMPER
↔
- C omparethetemperaturetableaftermeasurement.
MeasuringvoltageofCN30-"5"(Orange)
↔
68
NO
Badcontactofconnector/insertcorrectly
NO
Replacetemperaturesensor
NO(0.6V>Measurement<4.6V)
Recheckthewiringconnection
NO
Checktheiced-solder,solder
bridging,disturbedsolder
PCBTypicalGround
J23JUMMPER
J23JUMMPERareasbelow