Samsung RFG298HD Service Manual page 70

TROUBlESHOOTING
8)IfIceRoomSensorhastrouble
ERRORCode
DATA1.
Temperature table
** M easuringpointofresistancevalueaccordingto
Sensor**
Ambient:CN78"10"↔CN76-"1"Measurethevoltage
ofResistancevalue
**0Ω:Shorttrouble/Ω∞:Opentrouble
Refertothecircuitdiagraminthismanual
SensorMICOM/Connectornumber
IceRoom ConnectorCN78-"10"(Orange)and
J23JUMMPERfromPCBTypicalGround
Voltagemeasuredbetween4.6V~0.6V.
MeasuringvoltageofIC01MICOM#92,
CN78-"10"(Orange)andJ23JUMMPERfrom
PCBTypicalGroundaresimilar.
→ C heckthemeasureonthevoltageofResistance,
R316duetotheSMDMICOM
 C heckingMehodofIceRoomSensorvoltage
☞
CN78-"10"(Orange) CN76-"1"(Gray)
↔
- C omparewiththetemperaturetableafter
measurement.
Start Start
IsMAINPCB
ConnectorCN78andCN76inserted
correctly?
yES yES
Is
Iceroomsensorunit
normal?
yES yES
Isthevoltagebetween
MAINPCBConnectorCN78-"10"(Orange)and
J23JUMMPERnormal?
yES yES
Istheinputvoltageof
IC01MICOM#92normal?
yES
NotroublewithPCBandtemperaturesensor.
Checkthebadconnections.
☞CheckingMethodofIceRoomSensorVoltage
- M easurethevoltageofResistance,R316(IC01MICOM#92)onPCBor
CN78-"10"(Orange) J23JUMMPER
↔
- C omparewiththetemperaturetableaftermeasurement.
MeasuredvoltageofCN78-"10"(Orange) ↔ J23JUMMPERareasbelow
69
NO
Badcontactofconnector/insertcorrectly
NO
Replacetemperaturesensor
NO(0.6V>Measurement<4.6V)
Checkthewiringconnection
NO
Checktheiced-solder,solder
bridging,disturbedsolder
PCBTypicalGround
J23JUMMPER