If The Trouble Is Detected By Self-Diagnosis - Samsung RF267AE series Service Manual

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 Sensor has trouble
ERROR Code
2¢ (-17¡ ) is recommended
DATA1.
Temperature table
** Measuring point of resistance value according to
Sensor **
ICE MAKER : CN90#8 ↔#4 measuring resistance value
** 0Ω: Short trouble / ∞Ω: Open trouble
Refer to circuit diagram in the manual
Sensor MICOM/Connector number
ICE Connector CN90#"4"(White) and
Maker REG1 HEAT PCB common Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #78,
CN90-"4"(White) and REG1, HEAT SINK
from PCB typical Ground part are similar.
↔ Check the measure on the SENSOR
MARKING #9(R901) due to the SMD MICOM
☞ Checking method of ICE Maker Sensor resistance CN90#
"8(Sky-blue) ↔ #4"(White)
- Compare the temperature table after the measure.
38¢ (3¡ ) is recommended
Is MAIN PCB Connector
CN90 inserted correctly?
Is ICE Maker Sensor
MAIN PCB ConnectorCN90#4
Is input voltage of IC01
MICOM #78 normal?
No trouble with PCB and temperature sensor.
Recheck the bad contact of the connection.
☞ Checking method of ICE Maker Sensor voltage
- Measure the voltage of Sensor Check Point #9(IC01 MICOM #78)
or CN90#4(White)↔ REG1, HEAT SINK.
- Compare the temperature table after the measure. Measuring
voltage of CN90#4(White) ↔ REG1, HEAT SINK are below.
58
Start
NO
YES
NO
unit normal?
YES
Is the voltage between NO(0.6V > Measurement < 4.6V)
(White) and REG1
YES
NO
YES
Bad contact of connector/ insert correctly
Replace the ICE Maker
Check the contact of PCB & Wire Terminal
Check the iced-solder, solder bridging,
disturbed solder.
typical PCB Ground
REG1 HEAT-SINK