Samsung RF267AE series Service Manual page 62

TROUBLESHOOTING
4) If Ambient Sensor has trouble
ERROR Code
2¢ (-17¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
Ambient : CN31#1 ↔ #4 measuring resistance value
** Placed in the right top table of upper hinge.
** 0Ω: Short trouble / ∞Ω: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Ambient Connector Cn31#1(Yellow) to REG1
HEAT-SINK PCB common Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #72,
CN31-"1"(Yellow) and REG1, HEAT SINK from
PCB typical Ground part are similar.
→ Check the measure on the SENSOR MARKING
#7(R307) due to the SMD MICOM
☞ Checking method of Ambient Sensor resistance
CN31#1(Yellow) ↔ #4(Yellow)
- Compare the temperature table after the
measure
38¢ (3¡ ) is recommended
Connector CN31 inserted
Is the voltage between
MAIN PCB Connector CN31#1(Yellow) and REG1,
Is the input voltage of
IC01 MICOM #72 normal?
No trouble with PCB and temperature sensor
Recheck the bad contact of the connection
☞ Checking method of Ambient Sensor voltage
- Measure the voltage of Sensor Check Point #7
(IC01 MICOM #72) or CN31#1(Yellow) ↔ REG1, HEAT SINK.
- Compare the temperature table after the measure. Measuring
voltage of CN31#1(Yellow) ↔ REG1, HEAT SINK are below.
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Start Start
Is MAIN PCB NO
correctly?
YES YES
NO
Is Ambient Sensor
unit normal?
YES YES
NO(0.6V > Measurement < 4.6V)
HEAT SINK normal?
YES YES Check the contact of PCB & Wire Terminal correctly.
NO
YES
Bad contact of connector/ insert correctly
Replace the temperature sensor
Check the iced-solder, solder bridging,
disturbed solder. Replace the PCB
typical PCB Ground
REG1 HEAT-SINK