Samsung RF31FM Series Manual page 160

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6. Self Diagnosis & Trouble Shooting
6-1. If the trouble is detected by self-diagnosis
Measuring voltage of IC01 MICOM #71,
CN90 - "1" (Brown) and J23 JUMMPER
from PCB typical Ground part are similar.
→ Check the measure on the voltage of
Resistance, R914 DUE to the SMD
MICOM
☞ Checking method of ICE Maker Sensor
resistance CN90 "1"(Brown) ↔ "7"(Gray)
- Compare the temperature table after the
measure.
YES
Is input voltage of IC01
MICOM #71 normal?
YES
No trouble with PCB and
temperature sensor.
Recheck the bad contact of
the connection.
☞ Checking method of ICE Maker Sensor resistance
- Measure the voltage of Resistance R914(IC01 MICOM
#71) on PCB or CN90 "1"(Brown) ↔ J23 JUMMPER
- Compare the temperature table after the measure.
Measuring voltage of CN90-"1"(Brown) ↔ J23 JUMMPER are as below.
Check the iced-solder, solder
NO
bridging, disturbed solder.
PCB Typical Ground
J23 JUMMPER
To do list
160