Samsung RF23HT Series Service Manual page 77

TROUBLESHOOTING
4-2-1. If the trouble is detected by self-diagnosis
- The error of sensor will be displayed on the front of display.
when the error of sensor is detected at initial power ON, the appliance will not operated and display of
abnormal sensor part will blink.
- The appliance will not stop operating when the error of sensor is detected during operation of the
appliance.
But normal freezing might be not operated if the appliance is operated by the emergency operation
mode. You would better to check the appliance according to the self-diagnosis of the manual.
1) If ICE Maker(R) Sensor has troubled
ERROR Code
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
ICE MAKER: CN90 "1"↔ "7" measuring resistance
value ** 0Ω: Short trouble / Ω∞: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
Connector CN90-"1"(Brown)and
ICE
Maker
REG1-GND PCB typical Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #14,
CN90 - "1" (Brown) and REG1-GND from
PCB typical Ground part are similar.
→ Check the measure on the voltage of Resistance,
R914 DUE to the SMD MICOM
☞ Checking method of ICE Maker Sensor resistance
CN90 "1"(Brown) ↔ "7"(Gray)
- Compare the temperature table after the
measure.
Start
Is MAIN PCB Connector
CN90 inserted correctly?
YES
Is ICE Maker Sensor
unit normal?
YES
Is the voltage between
MAIN PCB Connector CN90 - "1"(Brown) and
REG1-GND normal?
YES
Is input voltage of IC01
MICOM #14 normal?
YES
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
☞ Checking method of ICE Maker Sensor resistance
- Measure the voltage of Resistance R914(IC01 MICOM
#14) on PCB or CN90 "1"(Brown) ↔ REG1-GND
- Compare the temperature table after the measure.
Measuring voltage of CN90-"1"(Brown) ↔ REG1-GND
are as below.
77
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.
PCB Typical Ground
REG1-GND