Samsung RF267AE series Service Manual page 63

TROUBLESHOOTING
5) If F Sensor has trouble
ERROR Code
2¢ (-17¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
F : CN30#3 ↔ CN76#1 measuring resistance value
** 0Ω: Short trouble / ∞Ω: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Connector Cn30#3(Red) to
F
REG1 HEAT-SINK PCB common Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #81,
CN30-"3"(Yellow) and REG1, HEAT SINK from PCB
typical Ground part are similar.
→ Check the measure on the SENSOR MARKING
#1(R309) due to the SMD MICOM
☞ Checking method of F Sensor resistance
CN30#3(Red) ↔ CN76#1(Gray)
- Compare the temperature table after the measure
38¢ (3¡ ) is recommended
Connector CN30 to CN76 inserted
Is the voltage between
MAIN PCB Connector CN30#3 (Red) and REG1,
Is the input voltage of
IC01 MICOM #81 normal?
No trouble with PCB and temperature sensor
Recheck the bad contact of the connection
☞ Checking method of F Sensor voltage
- Measure the voltage of Sensor Check Point #1
(IC01 MICOM #81) or CN30#3(Red) ↔ REG1, HEAT SINK.
- Compare the temperature table after the measure. Measuring
voltage of CN30#3(Red) ↔ REG1, HEAT SINK are below.
62
Start Start
Are MAIN PCB NO
correctly?
YES YES
NO
Is F Sensor
unit normal?
YES YES
NO(0.6V > Measurement < 4.6V)
HEAT SINK normal?
YES YES
NO
Check the iced-solder, solder bridging,
YES
Bad contact of connector/ insert correctly
Replace temperature sensor
Check the contact of PCB & Wire
Terminal correctly.
disturbed solder. Replace the PCB
typical PCB Ground
REG1 HEAT-SINK