Without sound of buzzer operation Start, Display’

Diagnostics

3) Without sound of buzzer operation

Start

Refer the description of Test function in the manual for the Forced operation.

Does it sound ‘Ding-Dong’if you press a button

on front panel?

Doesitmakeasoundof‘door-open’alarm whenyouareopening thedooroffreezerorfridge morethan2min?

Is the bent or go-out of the buzzer

in the main PCB?

Are signals coming

out of MICOM No. 21 in a 1-sec cycle

after the Forced operation?

YES

Is signal of Q801

Base ouputted with 1 sec. intervals in the condition above?

YES

Did lead of a

component fall on the vibration plate

of buzzer?

The main PCB and buzzer are normal

YES

Main PCB is normal; buzzer normal.

YES

	Check the panel PCB with the
	reference of ‘how to check panel
YES	display’.



	Buzzer is broken – replace it.
NO
NO



	Replace the main PCB.
	(failure of MICOM)
NO
NO



	Check the state of pattern connection
	between MICOM No.21 and Q801.
YES	(Check Open/Short)



	Poor buzzer is broken down or
	replace the buzzer.

Page 51

Image 51

Samsung RS2777, RS2544, RS2666, RS2622 Without sound of buzzer operation Start, Main PCB is normal buzzer normal, Display’

Contents

Model RS2544 RS2622 RS2644 RS2666 RS2777 Important Safety Notice Contents Xtra FreshTM Door AlarmMulti-Flow System Xtra SpaceTM It does not fall on you Cover using a screwdriver, and then disconnectTo protect refrigerator in movement With the door closed, remove the upper hinge Product R Refrigerator Label Location NomenclatureModels Company Name Freezer Refrigerator Specifications Warranty information Refrigerator Interior Views and DimensionsShelves and Bins Freezer Dimensions of Refrigerator Inches Capillary Tube Refrigeration Cycle and Cool Air Circulation RouteRefrigerant Route in Refrigeration cycle Freezer Evaporator Dryer Cool Air Circulation Freezer Refrigerator PlasticWire Drawer in Freezer······························ Mechanical DisassemblyRefrigerator Disassembly Freezer Disassembly Door Gasket Control PanelDoor Handle Beverage StationTM Plastic Drawers in Refrigerator Refrigerator Door Light SwitchRefrigerator Light Tempered Glass Shelf Evaporator Fan Motor Water FilterUpper Ductwork Evaporator Cover in the Refrigerator CoolSelect ZoneTM Thermistor Evaporator in RefrigeratorRefrigerator Thermistor CoolSelect ZoneTM Thermistor Freezer Shelf Freezer Door Light SwitchPlastic Wire Drawer in Freezer Door Bin in Freezer Unlock the locking tabs to separate the ice maker kit Ice maker is located inside of the ice dispenser assemblyDisconnect the ice maker wire connector Auger Motor Case Evaporator Cover in Freezer Freezer Light Ice-MakerThermistor Evaporator in FreezerFreezer Thermistor Ambient Thermistor Sub-condenser Machine Compartment ＆ Electric BoxWater Solenoids Condenser Fan Operation Function Digital Panel Temperature Control Function Quick Ice and Power Cool Functions Power FreezeQuick Ice functionChild Lock Function Fan Motor Delay Function of the Machine Compartment Ice & Water Dispenser FunctionCoolSelect ZoneTM Function RS2666,RS2777 Water Filter Indicator Function Filter IndicatorIce-Maker Function ·MICOM Port Preparation of Ice-makerInitial Operation function Judgement Remark Heater OFF Water Supply functionDefrost Function Heater on Defrost operation Sound Function Beeps will cease immediately when the doors are closedSelf-Diagnostics Function Self-Diagnostics in the initial Power on Error items LED Display Details Remarks ErrorError items of self-diagnostics Function error Set Point Shift Function Restoration Function for Power OutageThis mode, only the display LEDs for temperature will be on Load Operation Check Function Table of Set Point Shift Function Shift the freezer temperature sensor Operation Function Shift the Ice maker temperature sensor Shift the CoolSelect ZoneTM temperature sensor Circuit Descriptions Terminal Source Power CircuitReset Circuit Oscillator Circuit Change Temperature Sensing CircuitDoor S/W Sensing Circuit Micom DEF-sensor and Bimetal work in parallel Key Scan and Display CircuitKey Scan and display operation Key Scan CoolSelect ZoneTM Panel Circuit Fan Motor Bldc Drive Circuit Motor drive circuitVoltages between high-speed and low-speed D602 Eeprom CircuitOption Circuit Load Drive Circuit COMP. equivalence circuit of drive section Normal DiagnosticsIf power is not on Start Connection AssemblyIf the compressor and cooling fan motor don’t work normally Check after a lapse of 5 min If defrost function Exchange and troubleshoot Corresponding sensorPerform forced defrosting for F Room at a time Check if the iced solder of main PCB is Short If the temperature sensor of F and R room has troubleIf there is a trouble with self-diagnosis If the ambient sensor has trouble Start Remove causes after If alarm soundIf Ding-Dong sounds continuously Start If Beep sounds continuously Start Without sound of buzzer operation Start Main PCB is normal buzzer normalDisplay’ ZoneTM panel If the panel PCB is not working normally Door close If fan doesn’t work ReferenceConnections of door S/W Door open DC Panel PCB has trouble for itself If CoolSelect ZoneTM isn’t operated normally RS2555, RS2577If the lamp of CoolSelect ZoneTM is not lit Start If the Panel PCB key isn’t selected Is the inside lamp filament cut? If the lamps of freezer / refrigerator does not light Check the operation of SSR71 and Q701 If Crushed Ice/Cubed Ice doesn’t work properly Safety Instructions on Service ∼DC 12V load working condition Appendix ⅠReference for circuit diagnosticsDC 0V Stop Condition Resistance value Ref. Def heater For safety, you must turn the power off LoadValue Contents Ref Check a load Lamp Lamp on the REF Ref Check Door S/W 749 878834 791 Part Name Specifcation ’TY Ref Service part lists of each circuit boardPage Page Refrigerator Division 2003 Code DA82-00001D Electronics

Samsung RS2777, RS2544 Without sound of buzzer operation Start, Main PCB is normal buzzer normal

Models: RS2777 RS2622 RS2666 RS2544