Samsung RF23HT Series Service Manual page 84

TROUBLESHOOTING
8) If Ice Room Sensor has trouble
ERROR Code
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
Ambient : CN78 "10"↔ CN76-"1" Measure the voltage
of Resistance value
** 0Ω: Short trouble /Ω∞: Open trouble
Refer to the circuit diagram in this manual
Sensor MICOM/Connector number
Ice Room Connector CN78-"10"(Orange) and
REG1-GND from PCB Typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #11,
CN78-"10"(Orange) and REG1-GND 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.
Start
Start
Is MAIN PCB
Connector CN78 and CN76 inserted
correctly?
YES YES
Is Ice room sensor unit normal?
YES YES
Is the voltage between
MAIN PCB Connector CN78-"10"(Orange) and
REG1-GND normal?
YES YES
Is the input voltage of
IC01 MICOM #11 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 #11) on PCB or
CN78-"10"(Orange) ↔ REG1-GND
- Compare with the temperature table after measurement.
Measured voltage of CN78-"10"(Orange) ↔ REG1-GND are as below
84
NO
Bad contact of connector/ insert correctly
NO
Replace temperature sensor
NO(0.6V > Measurement < 4.6V)
Check the wiring connection
NO
Check the iced-solder, solder
bridging, disturbed solder
PCB Typical Ground
REG1-GND