Samsung RF267AE series Service Manual page 66

TROUBLESHOOTING
8) If Pantry Sensor has trouble
ERROR Code
2¢ (-17¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
Pantry : CN30#9 ↔ CN76#1 measuring resistance
value
** 0Ω: Short trouble / ∞Ω: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Pantry Connector Cn30#9(White-black) to REG1
HEAT-SINK PCB common Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #73,
CN30-"9"(White-black) and REG1, HEAT SINK from
PCB typical Ground part are similar.
→ Check the measure on the SENSOR MARKING
#6(R314) due to the SMD MICOM
☞ Checking method of Pantry Sensor resistance
CN30#9(White-black) ↔ CN76#1(Gray)
- Compare the temperature table after the measure
38¢ (3¡ ) is recommended
Connector CN30 and CN76 insert
Is the voltage between
MAIN PCB Connector CN30#9 (White-black) and
REG1, HEAT SINK normal?
Is the input voltage of IC01
MICOM Pin #73 normal?
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
☞
Checking method of Pantry Sensor voltage
- Measure the voltage of Sensor Check Point #6(IC01 MICOM #73) on
PCB or CN30#9(White-black) ↔ REG1, HEAT SINK
- Compare the temperature table after measurement. Measuring voltage
of CN30#9(White-black) ↔ REG1, HEAT SINK are as below
65
Start Start
Is MAIN PCB NO
correctly?
YES YES
NO
Is Pantry Sensor
normal?
YES YES
NO(0.6V > Measurement < 4.6V)
YES YES
NO
YES
Bad contact of connector/ insert correctly
Replace 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