Samsung RF18A Series Service Manual page 87

CHECK THE INSTALLATION STATUS
2) If R Sensor has trouble (check the other sensors in the same procedure)
ERROR Code
DATA1. Temperature table
** Measuring point of resistance value according to Sensor
R : CN51 - "14" ↔ "13"
F : CN51 - "9" ↔ "11"
R-DEF : CN51 - "12" ↔ "13"
F-DEF : CN51 - "5" ↔ "7"
Ambient : CN51 - "4" ↔ CN51 - "6"
measuring resistance value
** 0Ω: Short trouble /Ω∞: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
R : Connector CN51 -"14"(W/BRN) and "13" Pin(CN51) from PCB
typical Ground
F : Connector CN51 – "9"(BLU) and "11" Pin(CN51) from PCB typical
Ground
R-DEF : Connector CN20 – "12"(W/BLU) and "13" Pin(CN51) from
PCB typical Ground
F-DEF : Connector CN51 – "5"(BLK) and "7" Pin(CN51) from PCB
typical Ground
Ambient : Connector CN51 – "6"(WHT) and CN51 - "4" Pin(CN51)
from PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Checking method of ICE Maker/ICE Room Sensor resistance
Measuring voltage.
R : MIC01 MICOM #8, CN51 -"14"(W/BRN) and "13" Pin(CN51)
F : MIC01 MICOM #2, CN51 – "9"(BLU) and "11" Pin(CN51)
R-DEF : MIC01 MICOM #4, CN51 – "12"(W/BLU) and "13" Pin(CN51)
F-DEF : MIC01 MICOM #3, CN51 – "5"(BLK) and "7" Pin(CN51)
Ambient : MIC01 MICOM #2, CN51 – "6"(WHT) and CN51 - "4" Pin(CN51)
from PCB typical Ground part are similar.
→ Check the measure on the voltage of Resistance, R364(R), R356(F),
R362(R-DEF), R352(F-DEF), R358(Ambient) due to the SMD MICOM
☞ Checking method of R Sensor resistance
R : CN51 - "14"(W/BRN) ↔ "13"(GRY)
F : CN51 - "9"(BLU) ↔ "11"(WHT)
R-DEF : CN51 - "12"(W/BLU) ↔ "13"(GRY)
F-DEF : CN51 - "5"(BLK) ↔ "7"(WHT)
Ambient : CN51 - "4"(WHT) ↔ CN90 - "6"(WHT)
Compare the temperature table after measurement.
This document cannot be used without Samsung's authorization.
MAIN PCB Connector CN51 –"14"(W/BRN) and "13" MAIN PCB Connector CN51 –"14"(W/BRN) and "13"
No trouble with PCB and temperature sensor.
☞ Checking method of Sensor resistance
- Measure the voltage of Resistance
R : R364(IC01 MICOM #8) on PCB or CN51 -"14"(W/BRN) and "13" Pin(CN51) from PCB
F : R356(IC01 MICOM #2) on PCB or CN51 – "9"(BLU) and "11" Pin(CN51) from PCB
R-DEF : R362(IC01 MICOM #4) on PCB or CN51 – "12"(W/BLU) and "13" Pin(CN51) from PCB.
F-DEF : R352(IC01 MICOM #3) on PCB or CN51 – "5"(BLK) and "7" Pin(CN51) from PCB
Ambient : R358(IC01 MICOM #2) on PCB or CN51 – "6"(WHT) and CN51 - "4" Pin(CN51) from PCB
- Compare the temperature table after the measure.
Measuring voltage of
R : R364(IC01 MICOM #8) on PCB or CN51 -"14"(W/BRN) and "13" Pin(CN51)
F : R356(IC01 MICOM #2) on PCB or CN51 – "9"(BLU) and "11" Pin(CN51)
R-DEF : R362(IC01 MICOM #4) on PCB or CN51 – "12"(W/BLU) and "13" Pin(CN51)
F-DEF : R352(IC01 MICOM #3) on PCB or CN51 – "5"(BLK) and "7" Pin(CN51)
Ambient : R358(IC01 MICOM #2) on PCB or CN51 – "6"(WHT) and CN51 - "4" Pin(CN51)
from PCB are as below.
Start
Is MAIN PCB
Connector CN51 inserted correctly?
YES
Is R Sensor unit normal?
YES
Is the voltage between Is the voltage between
Pin(CN51) from PCB normal? Pin(CN51) from PCB normal?
YES
Is the input voltage of
IC01 MICOM #8 normal?
YES
Recheck the bad contact of the connection.
87
NO
Bad contact of
connector/ insert correctly.
NO
Replace the temperature
sensor.
NO
0.6V > Measurement < 4.6V)
Recheck the wire
connection part
NO
Check the iced-solder, solder
bridging, disturbed solder.
PIN Number