Samsung RM255BABB, RM255BASB manual If the panel PCB is not working normally, It is a care

Page 67

DIAGNOSTIC

6-6) If the panel PCB is not working normally:

1)Where all lights of the panel PCB are disabled, or only some lamps are disabled. Start

See the electric circuit

Is the connector on upper

NO

diagram or connection

hinge cover of freezer inserted

 

 

 

 

 

 

 

 

diagram attached to the

normally?

 

 

 

 

backside of refrigerator.

 

YES

 

 

Reinsert the connector.

 

 

Is the main PCB

NO

 

Troubleshoot contact failure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connector(CN50) inserted

 

 

 

 

 

 

 

 

 

 

 

 

 

 

normally?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

Reinsert the connector into the

 

 

 

 

 

main PCB.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the connector on door panel

NO

 

It is a care.

PCB inserted

normally?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

Reinsert the connector.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

Troubleshoot contact failure.

 

 

Do lights operate normally

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

when replacing panel PCB?

 

 

 

 

 

 

 

 

 

 

NO

1.Check the door wire of freezer – breaking of wire, short between wires.

2.Check the CABI wire of freezer – breaking of wire, short between wires.

3.Check the panel lighting circuit section within the main PCB for short or open.

Panel PCB itself has trouble.

2)Where the Panel PCB key isn’t selected:

-The basic check way : Please follow the basic check method, and then if it doesn`t work proceed as follows.

YES

Is the locking lamp lit?

NO

Are more than one key pressed

continuously?

Pressed

Recheck after releasing the locking

function.

NO

Is the PCB system

still operating even though it is

separated?

YES

Does lighting operated normally when replacing panel-PCB?

Operating when

disassembled Reassemble the PCB assy/Enforce the cancellation of pressed keys.

 

Reassemble the PCB asse/Enforce

YES

the cancellation of pressed keys.

 

 

 

 

 

 

 

 

NO

1.Check door wire of freezer – check breaking of wire, short between wires.

2.Check the CABI wire of freezer – check breaking of wire, short between wires.

3.Check for Short/Open of the Panel Communication / Power Supply parts of main pcb.

Panel PCB has trouble for in itself.

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Page 66 Page 68
Contents RM255BARB RM255BASB RM255BABB Authorized Training Center Campuses Important Safety Notice Contents Precautionssafety Warnings Symbols Forbidden Product Specifications Manual This operation instruction covers various modelsRM25 Model SpecificationAfter packing 386lbs Sensor Electric Parts SpecificationRunning Specifications Model Dispenser Home BarElectric Components ItemsPhotograph Optional Material SpecificationsPart Code Operating Instructions & Installation Digital Panel Temperature Control OperationBy in inside function irrespective of current setting Power Freeze and Power cool OperationPower Freeze Operation Power cool OperationCube / Crushed / ICE OFF Selection Function At Initial Power OnLock Function Able to operate on front panelLoad Operation Condition Machine Room F-Fan Motor Delay FunctionWater Dispenser Function Light OperationMaximum torsion point Initial OperationReverse rotation CCW Forward rotation CW Ice extraction Horizontal position Interval about 880msWater Supply Time Water Supply FunctionIce-Making Function Ice Extraction FunctionBold numerals indicate relevant ice tray steps Horizontality operation 53.6 62.6 Defrosting FunctionDefrosting period is fixed to 8 hours Arctic ZoneFresh Select Zone Function Arctic Select Zone FunctionFunction OperationOperation start Function Operation SpecificationTemp .8 ~ 44.6 of the Fridge compartment Test KEYFor the R compartment Forced Defrosting FunctionDisplay Function at Panel Alarm FunctionCommunication Error Display Function When water supply is finished, in the ice maker test modeSelf-Diagnostics Function Operating Instructions & InstallationBAD Item Trouble Status Self-Diagnostics ChecklistCR Sensor ErrorDefrosting Sensor of RTrouble CF-FAN ErrorCR-FAN Error On ErrorLoad Condition Display Function Load Mode Checklist Load Item Load StatusRelevant displays about load status is as follows Option Setting Function Changing to Optional ModeValue Item KEY FunctionChange for freezer compartment Temperature Change Table for the Freezer CompartmentKEY Temperature Change Table for the Refrigerator CompartmentFlow sensor CR Room Temperature Shift FunctionCase of basic model, the following items cannot be set Maker For Ice MakerDisassembly and Reassembly Door Assy Removing the Front Leg CoverRemoving the Freezer Door Removing the Refrigerator Door Remove two screws holding it to Open the Fresh Select Zone DoorLiner on the right side of the rail To separate it Reattaching the Freezer Door Reattaching the Refrigerator Door Levelling Zone Open the Arctic Select Zone DoorWater line must be connected to drinkable water only Do not overtighten the compression Note nutClose the filter cartridge cover Door Gasket Door Sub PartsControl Panel Door HandlePlastic Drawers in the Refrigerator Refrigerator Door Light SwitchRefrigerator Light Tempered Glass ShelfPlastic Drawer in Freezer Freezer Door Light SwitchFreezer Compartments Door Bin in FreezerTighten the screws 2 of the ice maker support Ice Dispenser Ice MakerFreezer Light Upper Ductwork Auger Motor CaseScrews Pull the upper part of the evaporator cover slightly Partition in the FreezerEvaporator in Freezer Evaporator Fan MotorWater Tank Freezer ThermistorThermistor cover Screw Ice-Maker ThermistorEvaporator Fan Motor in Refrigerator Evaporator cover in the RefrigeratorFresh /Arctic Select ZoneTM Thermistor Evaporator in FridgeRefrigerator Thermistor Ductwork Thermistor Thermistor coverUpper Ductwork Water Solenoids Machine Compartment Electric BoxPCB-MAIN Assy Sub-condenserRemoving the Arctic Select Zone Accessories Check at the Smps PBA Check Main PCB connection If power is not onStart NormalExchange and repair COMP. Assembly Check connector for Contact failureIf the compressor doesn’t work normally Perform forced defrosting for F R room one at a time ReferenceCheck the soldering on the main PCB for Shorts & breaks If the ambient temperature sensor has troubleHow To Check Temperature Sensing in the manual If there is a trouble with self-diagnosissensor failureGasket, food etc Alarm Sounds continuouslyrelated to the buzzerIf Ding-Dong sounds continuously Start If Beep sounds continuously StartReplace buzzer or panel PCB If the buzzer doesn’t soundMain PCB is normal, buzzer is Normal Buzzer is broken - replace itIf the panel PCB is not working normally Where the Panel PCB key isn’t selectedIt is a care Condition If fan motor doesn’t working normalyDoor S/W Door Open 0V DCDoor Open DC These signals will be inputted into MicomIf Ice Cubed or/and Ice Crushed dont work normally Replace Inside lamp Replace or troubleshoot Door S/W If Indoor Lamp of Freezer/Refrigerator doesn’t lightIf Water Drawer doesnt work normally Preliminary Check Failure of panel PCB itself Replace connector Wire and switchReplace connector and wire If Dispenser LED Lamp doesnt lightWiring Diagram Connector Arrangement Main Board Circuitschematic Diagram Conn Ector Arrangement SMP S Board A voltage proportional to Power BUS64.7 98.993.7 40.0 88.9 38.2 84.2 36.4 79.8 34.6 75.7 32.8 71.8 68.2#18 GND0.8V IC75 Input IC75 Output FAN107 Remarks Motor Drive Circuit DescriptionsPrinciple of Operation Comparison in HIGH/LOW SpeedXAA Reference Information 13-2 Q & a Problem Possible Causes What To DoSmall or hollow cubes Problem Possible Causes What To DoCompressor Sub-condenser Hot Pipe Dryer Step valve Additional InformationSuction Pipe Freezer Refrigerator
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