Samsung RB31FEJNB Series Service Manual page 61

4. TROUBLESHOOTING
2) When the EXT Sensor is defective
ERROR CODE
DATA1. Temp Table
** Sensor Resistance Reading Location **
Ambient : Between CN31 #1 and #2.
** Located in the PCB Box
** 0Ω : Short / ∞Ω : Open
Refer to Circuit Diagram
Sensor MICOM/Connector #
Between Connector CN31-
Ambient
"1"(WHT) and CN31-"2"(WHT)
Voltage : Between 4.6V ~ 0.6V
Voltage at IC10 MICOM #21
is the same as the value
between CN31-"1"(WHT) and
CN31-"2"(WHT) of the CN31
on MAIN PBA.
Start
MAIN PCB SENSOR
(CN31) is inserted properly?
Yes
EXT Sensor is
normal?
Yes
Voltage between
MAIN PCB Connector CN31-"1"(WHT) and
CN31-"2"(WHT)?
Yes
Input Voltage at IC10
MICOM Pin #21 is normal?
Yes
PCB and Temp Sensor are normal.
Check the connector contact.
61
No
Connector contact defect /
Reconnect
No
Replace Temp Sensor
NO (0.6V > Value or Value > 4.6V)
No
Check the assembled status of the
Sensor.
No
Check Soldering Defect & Short