Samsung RF31FM Series Manual page 172

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6. Self Diagnosis & Trouble Shooting
6-1. If the trouble is detected by self-diagnosis
Measuring voltage of IC01 MICOM #92,
CN78-"10"(Orange) and J23 JUMMPER
from PCB Typical Ground are similar.
→ Check the measure on the voltage of
Resistance, R316 due to the SMD
MICOM
☞ Checking Mehod of Ice Room Sensor
voltage CN78-"10"(Orange) ↔ CN76-"1"
(Gray)
- Compare with the temperature table after
measurement.
YES
Is the input voltage of
IC01 MICOM #92 normal?
YES
No trouble with PCB and
temperature sensor.
Check the bad connections.
☞ Checking Method of Ice Room Sensor Voltage
- Measure the voltage of Resistance, R316(IC01 MICOM #92)
on PCB or CN78-"10"(Orange) ↔ J23 JUMMPER
- Compare with the temperature table after measurement. Measured
voltage of CN78-"10"(Orange) ↔ J23 JUMMPER are as below
Check the iced-solder, solder
NO
bridging, disturbed solder
PCB Typical Ground
J23 JUMMPER
To do list
172