Samsung RFG298HD Service Manual page 68

TROUBlESHOOTING
6)IfFSensorhastrouble
ERRORCode
DATA1.
Temperature table
** M easuringpointofresistancevalueaccordingto
Sensor**
F:CN30-"4"↔CN76-"1"measuringresistancevalue
**0Ω:Shorttrouble/Ω∞:Opentrouble
Refertocircuitdiagraminthemanual
SensorMICOM/Connectornumber
ConnectorCN30-"4"(Red)to
F
J23JUMMPERPCBtypicalGround
Voltagemeasuredbetween4.6V~0.6V.
MeasuringvoltageofIC01MICOM#82,
CN30-"4"(Red)andJ23JUMMPERfrom
PCBtypicalGroundpartaresimilar.
→  C heckthemeasureonthevoltageofResistance,
R309duetotheSMDMICOM
☞ CheckingmethodofFSensorresistanceCN30-
"4"(Red) CN76-"1"(Gray)
↔
- Comparethetemperaturetableaftermeasurement.
Start Start
AreMAINPCB
ConnectorCN30andCN76
insertedcorrectly?
yES yES
IS
FSensorunitnormal?
yES yES
Isthevoltagebetween
MAINPCBConnectorCN30-"4"(Red)and
J23JUMMPERnormal?
yES yES
Istheinputvoltageof
IC01MICOM#82normal?
yES
NotroublewithPCBandtemperaturesensor
Recheckthebadcontactoftheconnection
☞
CheckingmethodofFSensorvoltage
- M easurethevoltageofResistanec,R309(IC01MICOM#82)onPCBor
CN30-"4"(Red) ↔ J23JUMMPER
-Comparethetemperaturetableaftermeasurement.
 M easuringvoltageofCN30-"4"(Red) J23JUMMPERareasbelow.
↔
67
NO
Badcontactofconnector/insertcorrectly
NO
Replacetemperaturesensor
NO(0.6V>Measurement<4.6V)
Recheckthewiringconnection
NO
Checktheiced-solder,solder
bridging,disturbedsolder
PCBTypicalGround
J23JUMMPER