Check Sensor - Samsung RS2511 Series Service Manual

Appendix Ⅰ Ⅰ (Reference for circuit diagnostics)
� Turn on Power and check status of Relay & Driving Circuit by checking followings according to load operation.
LOAD
DEFROST / COMP OFF
COMP ON
DEFROST
CUBE & AUGER
MOTOR OFF
CUBE & AUGER
MOTOR OPERATING
F FAN ON
C FAN ON
WATER VALVE
DISPENSER OPERATING
WATER VALVE ICE
MAKER OPERATING
Ref.2) Check SENSOR
� Check after disassembling connected to MAIN PCB CN30 &CN32
� Because it is NTC TYPE Sensor, risistance decreases as temp increases
1. Measure resistance between CN30 ⑧ and ⑨ for R-Sensor.
2. Measure resistance between CN30 ⑤ and ④ for F-Sensor.
3. Measure resistance between CN30 ⑥ and ④ for DEF-Sensor.
4. Measure resistance between CN30 ① and ④ for Ambient-Sensor.
5. Compare the above values with current temps of Sensoer locations and Part Spec in Manual and evalute
them.
RELAY TERMINALS
RY76 /RY75
CN71⑪�⑨
RY75
CN71⑬�⑨
RY76 /RY75
CN71⑪�⑨
RY75
CN71⑬�⑨
RY76 /RY75 CN71⑪�⑨
CN71⑬�⑨
RY75
RY73 /RY74 CN71⑨�CN70③
CN71⑨�CN70①
RY74
RY73 /RY74 CN71⑨�CN70③
CN71⑨�CN70①
RY74
RY79 CN71①�⑨
CN71⑦�⑨
RY77
RY71 CN71⑨�CN70⑦
CN71⑨�CN70⑤
RY72
VALUE WHEN IT IS DIFFERENT FROM MEASURED VALUE
SUPPLY
RY76 CONTACT SHORT,FAULTY DRIVING CIRCUIT
VOLTAGE(SV)
SV
RY75 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
FAULTY RY75 /
SV
RY76 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
0V
RY75 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
FAULTY RY76 /
0V
RY75 NC CONTACT OPEN, FAULTY DRIVING CIRCUIT
SV
RY75 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
SV
RY73 &RY74 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
SV
RY74 NO CONTACT SHORT,FAULTY DRIVING CIRCUIT
0V
RY73 OR RY74 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
0V
RY74 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
0V
RY79 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
0V
RY77 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
0V RY71 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
0V RY72 NO CONTACT OPEN, FAULTY DRIVING CIRCUIT
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