Samsung RF23HT Series Service Manual page 85

TROUBLESHOOTING
9) If PANTRY Sensor has trouble
ERROR Code
DATA1.
Temperature table
** Measuring point of resistance value according to Sensor
**
Flex : CN30 "9" ↔ CN76 "1" measuring resistance value
** 0Ω: Short trouble / Ω∞: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Pantry Connector CN30-"9"(Yellow) to
REG1-GND PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #2,
CN30-"9"(Yellow)and REG1-GND
from PCB typical Ground part are similar.
→ Check the measure on the voltage of Resistance, R314
due to the SMD MICOM
Checking method of PANTRY Sensor resistance
☞
CN30-"9"(Yellow) ↔ CN76-"1" (Gray)
- Compare the temperature table after measurement.
Start
Start
Is MAIN PCB
Connector CN30 and CN76 insert
correctly?
YES YES
Is Pantry Sensor
normal?
YES YES
Is the voltage between
MAIN PCB Connector CN30-"9"(Yellow)
and REG1-GND normal?
YES YES
Is the input voltage of IC01
MICOM Pin #2 normal?
YES
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
☞ Checking method of PANTRY Sensor resistance CN30-
"9"(Yellow) ↔ CN76-"1" (Gray)
- Compare the temperature table after measurement.
Measuring voltage of CN30-"9"(Yellow)
below
85
NO
Bad contact of connector/ insert correctly
NO
Replace temperature sensor
NO(0.6V > Measurement < 4.6V)
Recheck the wiring connection
NO
Check the iced-solder, solder
bridging, disturbed solder
PCB Typical Ground
↔
REG1-GND are as
REG1-GND