Samsung RS2666, RS2544, RS2622, RS2777 manual Ref Check Door S/W, Lamp Lamp on the REF

Page 61

Appendix Ⅰ(Reference for circuit diagnostics)

Ref. 4) Check sensors

Disconnect the connector from the Main PCB, than measure the resistance of the following sensors.

1. Check the resistance the Freezer sensor cn30 between the no. 2 and 3.

2. Check the resistance the Fridge Room sensor cn30 between the no. 6 and 7.

3. Check the resistance the F Defrosting sensor cn30 between the no. 2 and 4.

4. Check the resistance the R Defrosting sensor cn30 between the no. 6 and 8.

5. Check the resistance between the no. ① and ④ the ambient Air sensor cn31.

6. Check the resistance between the no. ③ and ④of the Ice-Maker sensor cn90.

7. Check the resistance between the no. ⑬ and ⑭ of the CoolSelect ZoneTM sensor cn51.

8. Decide the sensor by comparing above resistances to the temperature of each sensor with the conversion table of sensor resistance and voltage from the reference temperature of Ref. 6 on this manual.

※When the resistance is ∞Ωor 0Ω,check the connection of electric wire and sensorconnector.

Ref. 5) Check Door S/W

Check the condition in power on. Door S/W have 2 contact points. One contact point perceives the door open/close by DC 5V on the PCB. Another contact point turns on/off

the Lamp.

(Lamp on the REF)

1.If the Lamp turns on correctly when the door is open, it is normal. Press the door s/w and check it the lamp turns off. If it doesn’t work properly, check the door s/w on the refrigerator.

(Door open on the REF and the sensor part of the Main PCB)

1.Check the voltage between no. 5 “+” terminal and no.6 “-” terminal of CN30.

2.If 5V is checked when the door is open, it is normal.

3.If 0V is checked when the door is closed, it is normal. If it is not, check the door s/w and electric wire connection.

(Lamp on the FRE)

1.If the Lamp turns on correctly when the door is open, it is normal. Press the door s/w and check it the lamp turns off. If it doesn’t work properly, check the door s/w on the FRE.

(Door open on the FRE and the sensor part of the Main PCB)

1.Check the voltage between no. 1 “+” terminal and no.2 “-” terminal of CN30.

2.If 5V is checked when the door is open, it is normal.

3.If 0V is checked when the door is closed, it is normal. If it is not, check the door s/w and electric wire connection.

61

Image 61

Contents Model RS2544 RS2622 RS2644 RS2666 RS2777 Important Safety Notice Contents Multi-Flow System Door AlarmXtra SpaceTM Xtra FreshTMTo protect refrigerator in movement Cover using a screwdriver, and then disconnectWith the door closed, remove the upper hinge It does not fall on youModels NomenclatureCompany Name Product R Refrigerator Label LocationFreezer Refrigerator SpecificationsWarranty information Shelves and Bins Interior Views and DimensionsFreezer RefrigeratorDimensions of Refrigerator Inches Refrigerant Route in Refrigeration cycle Refrigeration Cycle and Cool Air Circulation RouteFreezer Evaporator Dryer Capillary TubeCool Air Circulation Freezer Refrigerator Refrigerator Disassembly Mechanical DisassemblyFreezer Disassembly PlasticWire Drawer in Freezer······························Door Handle Control PanelBeverage StationTM Door GasketRefrigerator Light Refrigerator Door Light SwitchTempered Glass Shelf Plastic Drawers in RefrigeratorUpper Ductwork Water FilterEvaporator Cover in the Refrigerator Evaporator Fan MotorRefrigerator Thermistor Evaporator in RefrigeratorCoolSelect ZoneTM Thermistor CoolSelect ZoneTM ThermistorPlastic Wire Drawer in Freezer Freezer Door Light SwitchDoor Bin in Freezer Freezer ShelfDisconnect the ice maker wire connector Ice maker is located inside of the ice dispenser assemblyAuger Motor Case Unlock the locking tabs to separate the ice maker kitEvaporator Cover in Freezer Freezer LightFreezer Thermistor Evaporator in FreezerAmbient Thermistor Ice-MakerThermistorWater Solenoids Machine Compartment ＆ Electric BoxCondenser Fan Sub-condenserOperation Function Digital Panel Temperature Control FunctionPower FreezeQuick Ice function Quick Ice and Power Cool FunctionsChild Lock Function Ice & Water Dispenser Function Fan Motor Delay Function of the Machine CompartmentCoolSelect ZoneTM Function RS2666,RS2777 Filter Indicator Water Filter Indicator FunctionIce-Maker Function Initial Operation function Preparation of Ice-makerJudgement Remark ·MICOM PortDefrost Function Water Supply functionHeater on Heater OFFDefrost operation Self-Diagnostics Function Beeps will cease immediately when the doors are closedSelf-Diagnostics in the initial Power on Sound FunctionError items of self-diagnostics ErrorFunction error Error items LED Display Details RemarksThis mode, only the display LEDs for temperature will be on Restoration Function for Power OutageLoad Operation Check Function Set Point Shift FunctionTable of Set Point Shift Function Shift the freezer temperature sensorOperation Function Shift the Ice maker temperature sensor Shift the CoolSelect ZoneTM temperature sensorCircuit Descriptions Reset Circuit Source Power CircuitOscillator Circuit TerminalDoor S/W Sensing Circuit Temperature Sensing CircuitMicom ChangeKey Scan and Display Circuit DEF-sensor and Bimetal work in parallelKey Scan and display operation Key Scan CoolSelect ZoneTM Panel Circuit Motor drive circuit Fan Motor Bldc Drive CircuitVoltages between high-speed and low-speed Option Circuit Eeprom CircuitLoad Drive Circuit D602COMP. equivalence circuit of drive section If power is not on DiagnosticsStart NormalIf the compressor and cooling fan motor don’t work normally AssemblyCheck after a lapse of 5 min ConnectionExchange and troubleshoot Corresponding sensor If defrost functionPerform forced defrosting for F Room at a time If there is a trouble with self-diagnosis If the temperature sensor of F and R room has troubleIf the ambient sensor has trouble Start Check if the iced solder of main PCB is ShortIf Ding-Dong sounds continuously Start If alarm soundIf Beep sounds continuously Start Remove causes afterMain PCB is normal buzzer normal Without sound of buzzer operation StartDisplay’ ZoneTM panel If the panel PCB is not working normallyConnections of door S/W If fan doesn’t work ReferenceDoor open DC Door closeIf the lamp of CoolSelect ZoneTM is not lit Start If CoolSelect ZoneTM isn’t operated normally RS2555, RS2577If the Panel PCB key isn’t selected Panel PCB has trouble for itselfIs the inside lamp filament cut? If the lamps of freezer / refrigerator does not lightCheck the operation of SSR71 and Q701 If Crushed Ice/Cubed Ice doesn’t work properly Safety Instructions on Service DC 0V Stop Condition Appendix ⅠReference for circuit diagnosticsResistance value ∼DC 12V load working conditionValue Contents For safety, you must turn the power off LoadRef Check a load Ref. Def heaterLamp Lamp on the REF Ref Check Door S/W834 878791 749Part Name Specifcation ’TY Ref Service part lists of each circuit boardPage Page Refrigerator Division 2003 Code DA82-00001D Electronics