Samsung RF28HDEDBSR Service Manual page 78

TROUBLESHOOTING
6) If F Sensor has trouble
ERROR Code
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
F : CN30-"4" ↔ CN76-"1" measuring resistance value
** 0Ω: Short trouble / Ω∞: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Connector CN30-"4"(Red) to
F
J23 JUMMPER PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #82,
CN30-"4"(Red) and J23 JUMMPER from
PCB typical Ground part are similar.
→ Check the measure on the voltage of Resistance,
R309 due to the SMD MICOM
☞ Checking method of F Sensor resistance
"4"(Red) CN76-"1"(Gray)
↔
- Compare the temperature table after measurement.
Connector CN30 and CN76
inserted correctly?
F Sensor unit normal?
Is the voltage between
MAIN PCB Connector CN30-"4"(Red) and
J23 JUMMPER normal?
Is the input voltage of
IC01 MICOM #82 normal?
No trouble with PCB and temperature sensor
Recheck the bad contact of the connection
CN30-
☞
Checking method of F Sensor voltage
- Measure the voltage of Resistanec, R309(IC01 MICOM #82) on PCB or
CN30-"4"(Red) ↔ J23 JUMMPER
- Compare the temperature table after measurement.
Measuring voltage of CN30-"4"(Red)
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Start Start
Are MAIN PCB NO
YES YES
NO
IS
YES YES
NO(0.6V > Measurement < 4.6V)
YES YES
NO
YES
↔ J23 JUMMPER are as below.
Bad contact of connector/ insert correctly
Replace temperature sensor
Recheck the wiring connection
Check the iced-solder, solder
bridging, disturbed solder
PCB Typical Ground
J23 JUMMPER