Samsung RF4287HAWP/XAA - Page 75

76
TROUBLESHOOTING
8) If Flex Sensor has trouble
Bad contact of connector/ insert correctly
Is MAIN PCB
Connector CN30 and CN76 insert
correctly?
Is Pantry Sensor
normal?
Is the voltage between
MAIN PCB Connector CN30#9(Whiteblack)
and REG1, HEAT SINK normal?
Is the input voltage of IC01
MICOM Pin# 73 normal?
Start
NO
YES
YES
YES
YES
Replace temperature sensor
NO
Recheck the wiring connection
NO(0.6V > Measurement < 4.6V)
Check the iced-solder, solder
bridging, disturbed solder
NO
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
** Measuring point of resistance value according to
Sensor **
Flex : CN30#9 ↔ CN76 #1 measuring resistance value
** 0Ω: Short trouble / ∞Ω: Open trouble
Sensor MICOM/Connector number
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #81,
CN30-"9"(Yellow) and REG1, HEAT SINK
from PCB typical Ground part are similar.
→ Check the measure on the Resistance, R314 due to the
SMD MICOM
☞ Checking method of Flex Sensor resistance
CN30-"9"(Yellow) ↔ CN76#1(Gray)
- Compare the temperature table after measurement.
DATA1.
Temperature table
ERROR Code
Refer to circuit diagram in the manual
Pantry
Connector CN30-"9"(Yellow) to
REG1 HEAT SINK PCB typical Ground
☞ Checking method of Flex Sensor voltage
- Measuring resistance, R314(IC01 MICOM #81) on PCB or
CN30-"9"(Yellow) ↔ REG1, HEAT SINK
- Compare the temperature table after measurement.
Measuring voltage of CN30-"9"(Yellow) ↔REG1, HEAT SINK
are as below
Typical PCB Ground
REG1 Heater Sink
Start
YES
YES
YES
AW3 SM-EN 2011.3.31 2:56 PM 페 이 지 7 6 i n