Samsung RFG298HD Service Manual page 71

TROUBlESHOOTING
9)IfPANTRySensorhastrouble
ERRORCode
DATA1.
Temperature table
** M easuringpointofresistancevalueaccordingtoSensor
**
Flex:CN30"9"↔CN76"1"measuringresistancevalue
**0Ω:Shorttrouble/Ω∞:Opentrouble
Refertocircuitdiagraminthemanual
SensorMICOM/Connectornumber
Pantry ConnectorCN30-"9"(yellow)to
J23JUMMPERPCBtypicalGround
Voltagemeasuredbetween4.6V~0.6V.
MeasuringvoltageofIC01MICOM#87,
CN30-"9"(yellow)andJ23JUMMPER
fromPCBtypicalGroundpartaresimilar.
→ C heckthemeasureonthevoltageofResistance,R314
duetotheSMDMICOM
 C heckingmethodofPANTRySensorresistance
☞
CN30-"9"(yellow)↔CN76-"1"(Gray)
-Comparethetemperaturetableaftermeasurement.
Start Start
IsMAINPCB
ConnectorCN30andCN76insert
correctly?
yES yES
IsPantrySensor
normal?
yES yES
Isthevoltagebetween
MAINPCBConnectorCN30-"9"(yellow)
andJ23JUMMPERnormal?
yES yES
IstheinputvoltageofIC01
MICOMPin#87normal?
yES
NotroublewithPCBandtemperaturesensor.
Recheckthebadcontactoftheconnection.
☞  C heckingmethodofPANTRySensorresistanceCN30-
↔
"9"(yellow) CN76-"1"(Gray)
-Comparethetemperaturetableaftermeasurement.
 M easuringvoltageofCN30-"9"(yellow)
as below
70
NO
Badcontactofconnector/insertcorrectly
NO
Replacetemperaturesensor
NO(0.6V>Measurement<4.6V)
Recheckthewiringconnection
NO
Checktheiced-solder,solder
bridging,disturbedsolder
PCBTypicalGround
↔
J23JUMMPERare
J23JUMMPER