Samsung RR39M7 Series Service Manual page 76

TROUBLESHOOTING
- 1 BOARD
2) When the EXT Sensor is defective
ERROR CODE
DATA1. Temp Table
** Sensor Resistance Reading
Location **
EXT : Between CN30 #5 and #7.
** Located in the PCB Box
** 0Ω : Short / ∞Ω : Open
Refer to Circuit Diagram
Sensor MICOM/Connector #
Between Connector
EXT CN30-"5"(ORG) and
CN30-"7"(WHT)
Voltage : Between 4.6V ~ 0.6V
Voltage at MIC01 MICOM #3 is the
same as the value between
CN30-"5"(ORG) and CN30-"7"(WHT)
of the CN30 on MAIN PBA.
Start
MAIN PCB SENSOR (CN30) is
inserted properly?
Yes
EXT Sensor is normal?
Yes
Voltage between MAIN PCB Voltage between MAIN PCB
Connector CN30-"5"(ORG) and Connector CN30-"5"(ORG) and
CN30-"7"(WHT) is normal? CN30-"7"(WHT) is normal?
Yes
Input Voltage at MIC01
MICOM Pin #3 is normal?
Yes
PCB and Temp Sensor are normal.
Check the connector contact.
76
No
Connector contact defect / Reconnect
No
Replace the Temp Sensor.
NO (0.6V > Value or Value > 4.6V)
No
Check the assembled status of the
Sensor.
No
Check the Soldering Defect & Short.