Samsung RFG298HD Service Manual page 66

TROUBlESHOOTING
4)IfRDEFSensorhastrouble
ERRORCode
DATA1.
Temperature table
** M easuringpointofresistancevalueaccordingto
Sensor**
R-DEF:CN30-"8"↔ CN76-"1"measuring
resistance value
**0Ω:ShorttroubleΩ∞:Opentrouble
Refertocircuitdiagraminthemanual
SensorMICOM/ConnectorNumber
ConnectorCN30-"8"(Sky-blue)and
RDEF
J23JUMMPERPCBtypicalGround
Voltagemeasuredbetween4.6V~0.6V.
MeasuringvoltageofIC01MICOM#86
CN30-"8"(Sky-blue)andJ23JUMMPERfrom
PCBtypicalGroundpartaresimilar.
→  C heckthemeasureonthevoltageofResistanceR313
duetotheSMDMICOM
☞  C heckingmethodofRSensorresistanceCN30-
"8"(Sky-blue) CN76-"1"(Gray)
↔
- C omparethetemperaturetableafter
measurement.
Start Start
IsMAINPCB
ConnectorCN30andCN76inserted
correctly?
yES yES
IsRDEFSensor
unitnormal?
yES yES
Istheinputvoltagebetween
MAINPCBConnectorCN30-"8"(Skyblue)
andJ23JUMMPERnormal?
yES yES
IstheinputvoltageofIC01
MICOM#86normal?
yES
NotroublewithPCBandtemperaturesensor.
Recheckthebadcontactoftheconnection.
☞ CheckingmethodofRDEFSensorresistance
- M easurethevoltageofResistanceR313(IC01MICOM#86)on
PCBorCN30-"8"(Sky-blue) J23JUMMPER
↔
-   C omparethetemperaturetableaftermeasurement.
   M easuringvoltageofCN30-"8"(Sky-blue)
areasbelow.
65
NO
Badcontactofconnector/insertcorrectly
NO
Replacethetemperaturesensor
NO(0.6V>Measurement<4.6V)
Recheckthewireconnectionpart
NO
Checktheiced-solder,solderbridging,
disturbedsolder.
PCBTypicalGround
J23JUMMPER
 J 23JUMMPER
↔