Samsung RF28HMEDBSR Service Manual Page 78

French door refrigerator.
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TROUBLESHOOTING
3) If R DEF Sensor has trouble
ERROR Code
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
R-DEF : CN30-"8" ↔ CN76-"1" measuring
resistance value
** 0Ω: Short trouble Ω∞: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector Number
Connector CN30-"8"(Sky-blue) and
R DEF
J23 JUMMPER PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #86
CN30-"8"(Sky-blue) and J23 JUMMPER from
PCB typical Ground part are similar.
→ Check the measure on the voltage of Resistance R313
due to the SMD MICOM
Checking method of R Sensor resistance CN30-
"8"(Sky-blue)
CN76-"1"(Gray)
- Compare the temperature table after
measurement.
Start
Start
Is MAIN PCB
Connector CN30 and CN76 inserted
correctly?
YES
YES
Is R DEF Sensor
unit normal?
YES
YES
Is the input voltage between
MAIN PCB Connector CN30-"8"(Skyblue)
and J23 JUMMPER normal?
YES
YES
Is the input voltage of IC01
MICOM # 86 normal?
YES
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
Checking method of R DEF Sensor resistance
- Measure the voltage of Resistance R313(IC01 MICOM #86) on
PCB or CN30-"8"(Sky-blue)
- Compare the temperature table after measurement.
Measuring voltage of CN30-"8"(Sky-blue)
are as below.
78
NO
Bad contact of connector/ insert correctly
NO
Replace the temperature sensor
NO(0.6V > Measurement < 4.6V)
Recheck the wire connection part
NO
Check the iced-solder, solder bridging,
J23 JUMMPER
J23 JUMMPER
disturbed solder.
PCB Typical Ground
J23 JUMMPER

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