Samsung RFG298AABP - Page 67

TROUBLESHOOTING
2) If ICE Maker(F) Sensor has troubled
Bad contact of connector/ insert correctly
Is MAIN PCB
Connector CN90 inserted
correctly?
Is ICE Maker(F)
sensor unit normal?
Is the voltage between
MAIN PCB Connector CN90#"4"(White)
and REG1, HEAT SINK normal?
Is input voltage of
IC01 MICOM #78 normal?
Start
NO
YES
YES
YES
YES
Replace the ICE Maker
NO
Check the contact of PCB & Wire
Terminal correctly.
NO(0.6V > Measurement < 4.6V)
Check the iced-solder, solder bridging,
disturbed solder.
Replace the PCB
※ This refrigerator has Dual Ice Maker,
so controlled two Ice Makers.
NO
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
** Measuring point of resistance value according to Sensor **
ICE MAKER(F) : CN90 #3 or #8 ↔ #4 measuring
resistance value
** 0Ω: Short trouble / ∞Ω: Open trouble
Sensor MICOM/Connector number
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #78,
CN90#4(White) and REG1, HEAT SINK from PCB
typical Ground part are similar.
→ Check the measure on the SENSOR MARKING #9(R901)
due to the SMD MICOM.
☞ Checking Method of ICE MAKER(R) Senser
resistance CN90 #3(white) or #8(Sky_blue) ↔
#4(White)
- Compare the temperature table after the measure.
DATA1.
Temperature table
ERROR Code
Refer to circuit diagram in the manual
ICE
Maker(F)
Connector CN90-#4(White) and REG1
HEAT-SINK PCB common Ground
☞ Checking method of ICE Maker(F) Sensor voltage
- Measure the voltage of Sensor Check Point #9(IC01 MICOM
#78) or CN90#4(white) ↔ REG1, HEAT SINK.
- Compare the temperature table after the measure.
Measuring voltage of CN90#4(White) ↔ REG1, HEAT SINK
are below.
typical PCB Ground
REG1 HEAT-SINK
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