Samsung RF30HBEDBSR Service Manual page 79

TROUBLESHOOTING
8) Mid Drawer 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
Mid
Connector CN30-"9"(Yellow) to
drawer
J23 JUMMPER PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #87,
CN30-"9"(Yellow)and J23 JUMMPER
from PCB typical Ground part are similar.
→ Check the measure on the voltage of Resistance, R314
due to the SMD MICOM
Checking method of Mid drawer 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 Mid drawer Sensor
normal?
YES YES
Is the voltage between
MAIN PCB Connector CN30-"9"(Yellow)
and J23 JUMMPER normal?
YES YES
Is the input voltage of IC01
MICOM Pin #87 normal?
YES
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
☞ Checking method of Mid drawer Sensor resistance CN30-
↔
"9"(Yellow) CN76-"1" (Gray)
- Compare the temperature table after measurement.
Measuring voltage of CN30-"9"(Yellow)
as below
79
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
↔
J23 JUMMPER are
J23 JUMMPER