Samsung RF267AARS Service Manual page 68

TROUBLESHOOTING
7) If Ice Room Sensor has trouble
ERROR Code
2¢ (-19¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
Ambient : CN32#3 CN75#1 Measure the resistance
value
** 0 : Short trouble / : Open trouble
Refer to the circuit diagram in this manual
Sensor MICOM/Connector number
Ice Room Connector CN32-"3"(Orange) and CN1-
"3"(Black) from typical PCB Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #51,
CN32-"3"(Orange) and CN1-"3"(Black) from
typical PCB Ground are similar.
Checking Mehod of Ice Room Sensor voltage
CN32-"3"(Orange) CN75-"1" (Gray)
- Compare with the temperature table after
measurement.
38¢ (3¡ ) is recommended
Connector CN32 inserted correctly?
MAIN PCB Connector CN32-"3"(Orange)
to CN1-"3"(Black) normal?
IC01 MICOM #51 normal?
No trouble with PCB and temperature sensor.
Check the bad connections.
Checking Method of Ice Room Sensor Voltage
- Measure the voltage of sensor checking point #8(IC01 MICOM #51) on
PCB or CN32-"3" (Orange)
- Compare with the temperature table after measurement.
Measured voltage of CN32-"3" (Orange)
66
Start Start
Is MAIN PCB NO
YES YES
NO
Is Ice Room Sensor
unit normal?
YES YES
Is the voltage between NO(0.6V > Measurement < 4.6V)
YES
YES
NO
Is the input voltage of
YES
CN1-"3"(Black)
CN1-"3" (Black) are below
Bad contact of connector/ insert correctly
Replace temperature sensor
Check the wiring connection
Check the iced-solder, solder
bridging, disturbed solder
Typical PCB Ground CN1-"3"
(Black)