Samsung RF23HT Series Service Manual page 79

TROUBLESHOOTING
3) If R Sensor has trouble
ERROR Code
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
R : CN30 - "6" ↔ CN76-"1" measuring resistance value
** 0Ω: Short trouble /Ω∞: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Connector CN30 - "6"(White) to
R
REG1-GND PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage IC01 MICOM #5,
CN30 - "6"(White) and REG1-GND
from PCB typical Ground part are similar.
→ Check the measure on the voltage of Resistance,
R311 due to the SMD MICOM
Checking method of R Sensor resistance
☞
CN30 - "6"(White) CN76-"1"(Gray) Compare the
↔
temperature table after measurment.
Start
Is MAIN PCB
Connector CN30 and CN76 inserted
correctly?
YES
Is R Sensor
unit normal?
YES
Is the voltage between
MAIN PCB Connector CN30 - "6"(White) and
REG1-GND normal?
YES
Is the input voltage of
IC01 MICOM #5 normal?
YES
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
Checking method of R Sensor resistance
☞
- Measure the voltage of Resistance R311(IC01 MICOM
#5) on PCB or CN30 - "6"(White)
- Compare the temperature table after measurement.
Measuring voltage of CN30 - "6"(White)
are as below.
79
NO
Bad contact of connector/ insert correctly
NO
Replace the temperature sensor
NO(0.6V > Measurement < 4.6V)
Recheck the wire connection part
NO
Check the iced-solder, solder
bridging, disturbed solder.
PCB Typical Ground
↔ REG1-GND
REG1-GND
REG1-GND
↔