Samsung RF267AE series Service Manual page 61

TROUBLESHOOTING
3) If R DEF Sensor has trouble
ERROR Code
2¢ (-17¡ ) is recommended
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
R DEF Connector Cn30#8(Sky-blue) to REG1
HEAT-SINK PCB common Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #74,
CN30-"8"(Sky-blue) and REG1, HEAT SINK from
PCB typical Ground part are similar.
→ Check the measure on the SENSOR
MARKING #5(R313) due to the SMD MICOM
☞ Checking method of R Sensor resistance
CN30#7(Sky-blue) ↔ CN76#1(Gray)
- Compare the temperature table after the
measure.
38¢ (3¡ ) is recommended
Connector CN30 to CN76 inserted
MAIN PCB Connector CN30#8(Sky-blue) and
REG1, HEAT SINK normal?
Is the input voltage of IC01
MICOM #74 normal?
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
☞ Checking method of R DEF Sensor voltage
- Measure the voltage of Sensor Check Point #5(IC01 MICOM #74)
or CN30#8(Sky-blue)
- Compare the temperature table after the measure. Measuring
voltage of CN30#8(Sky-blue)
60
Start Start
NO
Is MAIN PCB
correctly?
YES YES
NO
Is R DEF Sensor
unit normal?
YES YES
Is the voltage between NO(0.6V > Measurement < 4.6V)
YES YES
NO
YES
↔
REG1, HEAT SINK.
↔
REG1, HEAT SINK are below.
Bad contact of connector/ insert correctly
Replace the temperature sensor
Check the contact of PCB & Wire Terminal correctly.
Check the iced-solder, solder bridging,
disturbed solder. Replace the PCB
typical PCB Ground
REG1 HEAT-SINK