Diagnostics, If power is not on, Start, Normal | Samsung RS2622

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

Contents

Model RS2544 RS2622 RS2644 RS2666 RS2777 Important Safety Notice Contents Xtra SpaceTM Door AlarmMulti-Flow System Xtra FreshTM With the door closed, remove the upper hinge Cover using a screwdriver, and then disconnectTo protect refrigerator in movement It does not fall on you Company Name NomenclatureModels Product R Refrigerator Label Location Specifications Freezer Refrigerator Warranty information Freezer Interior Views and DimensionsShelves and Bins Refrigerator Dimensions of Refrigerator Inches Freezer Evaporator Dryer Refrigeration Cycle and Cool Air Circulation RouteRefrigerant Route in Refrigeration cycle Capillary Tube Cool Air Circulation Freezer Refrigerator Freezer Disassembly Mechanical DisassemblyRefrigerator Disassembly PlasticWire Drawer in Freezer······························ Beverage StationTM Control PanelDoor Handle Door Gasket Tempered Glass Shelf Refrigerator Door Light SwitchRefrigerator Light Plastic Drawers in Refrigerator Evaporator Cover in the Refrigerator Water FilterUpper Ductwork Evaporator Fan Motor CoolSelect ZoneTM Thermistor Evaporator in RefrigeratorRefrigerator Thermistor CoolSelect ZoneTM Thermistor Door Bin in Freezer Freezer Door Light SwitchPlastic Wire Drawer in Freezer Freezer Shelf Auger 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 kit Freezer Light Evaporator Cover in Freezer Ambient Thermistor Evaporator in FreezerFreezer Thermistor Ice-MakerThermistor Condenser Fan Machine Compartment ＆ Electric BoxWater Solenoids Sub-condenser Operation Function Temperature Control Function Digital Panel Power 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 Port Heater on Water Supply functionDefrost Function Heater OFF Defrost operation Self-Diagnostics in the initial Power on Beeps will cease immediately when the doors are closedSelf-Diagnostics Function Sound Function Function error ErrorError items of self-diagnostics Error items LED Display Details Remarks Load Operation Check Function Restoration Function for Power OutageThis mode, only the display LEDs for temperature will be on Set Point Shift Function Shift the freezer temperature sensor Table of Set Point Shift Function Operation Function Shift the CoolSelect ZoneTM temperature sensor Shift the Ice maker temperature sensor Circuit Descriptions Oscillator Circuit Source Power CircuitReset Circuit Terminal Micom Temperature Sensing CircuitDoor S/W Sensing Circuit Change Key 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 D602 COMP. equivalence circuit of drive section Start DiagnosticsIf power is not on Normal Check after a lapse of 5 min AssemblyIf the compressor and cooling fan motor don’t work normally Connection Exchange 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 Short If Beep sounds continuously Start If alarm soundIf Ding-Dong sounds continuously Start Remove causes after Main PCB is normal buzzer normal Without sound of buzzer operation StartDisplay’ If the panel PCB is not working normally ZoneTM panel Door open DC If fan doesn’t work ReferenceConnections of door S/W Door close If 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 itself If 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 condition Ref Check a load For safety, you must turn the power off LoadValue Contents Ref. Def heater Ref Check Door S/W Lamp Lamp on the REF 791 878834 749 Ref Service part lists of each circuit board Part Name Specifcation ’TYPage Page Electronics Refrigerator Division 2003 Code DA82-00001D