Samsung RF267AARS Service Manual page 66

TROUBLESHOOTING
5) If F Sensor has trouble
ERROR Code
2¢ (-19¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
F : CN30#3 CN75#1 measuring resistance value
** 0 : Short trouble / : Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Connector CN30#3(Red) to
F
CN1#3(Black) PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #52,
CN30#3(Red) and CN1#3(Black) from
PCB typical Ground part are similar.
Checking method of F Sensor resistance
CN30#3(Red) CN75#1(Gray)
- Compare the temperature table after the measure
38¢ (3¡ ) is recommended
Connector CN30 to CN75
MAIN PCB Connector CN30#3(Red) to
Is the input voltage of
IC01 MICOM #52 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 #52)
on PCB or CN30#3(Red)
- Compare the temperature table after the measure
Measuring voltage of CN30#3(Red)
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Start Start
Are MAIN PCB NO
inserted correctly?
YES YES
NO
Is F Sensor
unit normal?
YES YES
Is the voltage between NO(0.6V > Measurement < 4.6V)
CN1#3(Black) normal?
YES
YES
NO
YES
CN1#3(Black)
CN1#3(Black) are below.
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)