Samsung RS2622, RS2544, RS2666, RS2777 manual Diagnostics, If power is not on, Start, Normal

Page 46

11. Diagnostics

11-1) If power is not ON

Caution!

At the power of main PCB, the 115V power and a high-voltage over DC 170V occur. Please take care of yourself on repair and measurement.

To check the main PCB, please apply descriptions of operation and references in the manual.

Start

Is 115V AC fuse down?

Is power 115V

both terminals of CN10?

Is fuse on main PCB down?

Is DC 170V impressed to both

terminals of BD1?

Top S/W 233Y

Is the voltage impressed DC 5.8V

between C and S ?

YES

NO

YES

NO

NO

Check the exchange of fuse and

disconnection cause.

Check the assembly and connection of

electric wires.

Exchange fuse

115V 2A?

Check the PCB pattern and replace BD1.

- Check the connections of main PCB.

- Check the connections between upper

Is 12V impressed to both		NO
Is 12V impressed to both
terminals of C102?
		NO

Is the load such as relay normal?

Replace PCB assembly.

1)Replace D104 (D5S6M).

2)Replace PCB assembly.

Replace REG1(KA7805)

hinge and CABI-door.

- Check the connections between door and

panel PCB.

Is normal the load, such as

relay?

NO

NO

1) Check the assembly of electric wires and troubleshoot.

2) Replace the panel PCB.

Is there any PCB soldering, short or broken?

Normal

1) Replace the corresponding relay.

2) Check lead wire for contact.

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Contents Model RS2544 RS2622 RS2644 RS2666 RS2777 Important Safety Notice Contents Xtra SpaceTM Door AlarmMulti-Flow System Xtra FreshTMWith the door closed, remove the upper hinge Cover using a screwdriver, and then disconnectTo protect refrigerator in movement It does not fall on youCompany Name NomenclatureModels Product R Refrigerator Label LocationSpecifications Freezer RefrigeratorWarranty information Freezer Interior Views and DimensionsShelves and Bins RefrigeratorDimensions of Refrigerator Inches Freezer Evaporator Dryer Refrigeration Cycle and Cool Air Circulation RouteRefrigerant Route in Refrigeration cycle Capillary TubeCool Air Circulation Freezer Refrigerator Freezer Disassembly Mechanical DisassemblyRefrigerator Disassembly PlasticWire Drawer in Freezer······························Beverage StationTM Control PanelDoor Handle Door GasketTempered Glass Shelf Refrigerator Door Light SwitchRefrigerator Light Plastic Drawers in RefrigeratorEvaporator Cover in the Refrigerator Water FilterUpper Ductwork Evaporator Fan MotorCoolSelect ZoneTM Thermistor Evaporator in RefrigeratorRefrigerator Thermistor CoolSelect ZoneTM ThermistorDoor Bin in Freezer Freezer Door Light SwitchPlastic Wire Drawer in Freezer Freezer ShelfAuger Motor Case Ice maker is located inside of the ice dispenser assemblyDisconnect the ice maker wire connector Unlock the locking tabs to separate the ice maker kitFreezer Light Evaporator Cover in FreezerAmbient Thermistor Evaporator in FreezerFreezer Thermistor Ice-MakerThermistorCondenser Fan Machine Compartment ＆ Electric BoxWater Solenoids Sub-condenserOperation Function Temperature Control Function Digital PanelPower 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 Judgement Remark Preparation of Ice-makerInitial Operation function ·MICOM PortHeater on Water Supply functionDefrost Function Heater OFFDefrost operation Self-Diagnostics in the initial Power on Beeps will cease immediately when the doors are closedSelf-Diagnostics Function Sound FunctionFunction error ErrorError items of self-diagnostics Error items LED Display Details RemarksLoad Operation Check Function Restoration Function for Power OutageThis mode, only the display LEDs for temperature will be on Set Point Shift FunctionShift the freezer temperature sensor Table of Set Point Shift FunctionOperation Function Shift the CoolSelect ZoneTM temperature sensor Shift the Ice maker temperature sensorCircuit Descriptions Oscillator Circuit Source Power CircuitReset Circuit TerminalMicom Temperature Sensing CircuitDoor S/W Sensing Circuit 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 Load Drive Circuit Eeprom CircuitOption Circuit D602COMP. equivalence circuit of drive section Start DiagnosticsIf power is not on NormalCheck after a lapse of 5 min AssemblyIf the compressor and cooling fan motor don’t work normally ConnectionExchange and troubleshoot Corresponding sensor If defrost functionPerform forced defrosting for F Room at a time If the ambient sensor has trouble Start If the temperature sensor of F and R room has troubleIf there is a trouble with self-diagnosis Check if the iced solder of main PCB is ShortIf Beep sounds continuously Start If alarm soundIf Ding-Dong sounds continuously Start Remove causes afterMain PCB is normal buzzer normal Without sound of buzzer operation StartDisplay’ If the panel PCB is not working normally ZoneTM panelDoor open DC If fan doesn’t work ReferenceConnections of door S/W Door closeIf the Panel PCB key isn’t selected If CoolSelect ZoneTM isn’t operated normally RS2555, RS2577If the lamp of CoolSelect ZoneTM is not lit Start Panel PCB has trouble for itselfIf the lamps of freezer / refrigerator does not light Is the inside lamp filament cut?Check the operation of SSR71 and Q701 If Crushed Ice/Cubed Ice doesn’t work properly Safety Instructions on Service Resistance value Appendix ⅠReference for circuit diagnosticsDC 0V Stop Condition ∼DC 12V load working conditionRef Check a load For safety, you must turn the power off LoadValue Contents Ref. Def heaterRef Check Door S/W Lamp Lamp on the REF791 878834 749Ref Service part lists of each circuit board Part Name Specifcation ’TYPage Page Electronics Refrigerator Division 2003 Code DA82-00001D