Samsung RF267AARS Service Manual page 69

TROUBLESHOOTING
8) If Pantry Sensor has trouble
ERROR Code
2¢ (-19¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
Pantry : CN30#8 #9 measuring resistance value
** 0 : Short trouble / : Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Pantry Connector CN30#8(White-black) to
CN1#3(Black) PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #58,
CN30#8(White-black) and CN1#3(Black)
from PCB typical Ground part are similar.
Checking method of Pantry Sensor resistance
CN30#8(White-black) #9(Gray)
- Compare the temperature table after the measure
38¢ (3¡ ) is recommended
Connector CN30 insert
MAIN PCB Connector CN30#8(Whiteblack)
to CN1#3(Black) normal?
Is the input voltage of IC01
MICOM Pin# 58 normal?
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
Checking method of Pantry Sensor voltage
- Measuring voltage of Sensor Check Point #5(IC01 MICOM #58) on
PCB or CN30#8(White-black)
- Compare the temperature table after the measure
Measuring voltage of CN30#8(white-black) CN1#3(Black) are below
67
Start Start
Is MAIN PCB NO
correctly?
YES YES
NO
Is Pantry Sensor
normal?
YES YES
Is the voltage between NO(0.6V > Measurement < 4.6V)
YES
YES
NO
YES
CN1#3(Black)
Bad contact of connector/ insert correctly
Replace temperature sensor
Recheck the wiring connection
Check the iced-solder, solder
bridging, disturbed solder
typical PCB Ground
CN1#3(Black)