If The Trouble Is Detected By Self-Diagnosis - Samsung RF4287HARS Service Manual

AW3 SM-EN 2011.3.31 2:56 PM 페이지69 in
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
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
ICE
Connector CN90# "±1"(Brown)and
Maker
REG1 HEAT-SINK PCB common Ground
Voltage measured between 4.6V ~ 0.6V.
Measuring voltage of IC01 MICOM #89,
CN90# "1" (Brown) and REG1, HEAT SINK from
PCB typical Ground part are similar.
→ Check the measure on the Resistance, R914due to
the SMD MICOM
☞ Checking method of ICE Maker Sensor
resistance CN90 "1"(Brown) ↔ "7"(Gray)
- Compare the temperature table after the
measure.
DATA1.
No trouble with PCB and temperature sensor.
☞ Checking method of ICE Maker Sensor resistance
- Measure the Resistance R914(IC01 MICOM #89)
on PCB or CN90 "1"(Brown) ↔ REG1, HEAT SINK
- Compare the temperature table after the measure.
Measuring voltage of CN90#4(White) ↔ REG1,
HEAT SINK are below.
Start
NO
Is MAIN PCB Connector
CN90 inserted correctly?
YES
NO
Is ICE Maker Sensor
unit normal?
YES
Is the voltage between NO(0.6V > Measurement < 4.6V)
MAIN PCB Connector CN90#"4"(White) and
REG1, HEAT SINK normal?
YES
NO
Is input voltage of IC01
MICOM #78 normal?
YES
Recheck the bad contact of the connection.
69
Bad contact of connector/ insert correctly
Replace the temperature sensor
Recheck the wire connection part
Check the iced-solder, solder
bridging, disturbed solder.
typical PCB Ground
REG1 HEAT-SINK