If the panel PCB is not working normally | Samsung RM255BABB

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 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.
								Troubleshoot contact failure.


		connector(CN50) inserted
		connector(CN50) inserted
		normally?
		normally?

			YES					Reinsert the connector into the
			YES					main PCB.
								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?
		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.
YES

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.

66

Image 67

Samsung RM255BABB manual If the panel PCB is not working normally, It is a care, Where the Panel PCB key isn’t selected

Contents

RM255BARB RM255BASB RM255BABB Authorized Training Center Campuses Important Safety Notice Contents Precautionssafety Warnings Symbols Forbidden Product Specifications Manual This operation instruction covers various models RM25 Model SpecificationAfter packing 386lbs Sensor Electric Parts Specification Running Specifications Model Dispenser Home BarElectric Components Items Photograph Optional Material SpecificationsPart Code Operating Instructions & Installation Digital Panel Temperature Control Operation By in inside function irrespective of current setting Power Freeze and Power cool OperationPower Freeze Operation Power cool Operation Cube / Crushed / ICE OFF Selection Function At Initial Power OnLock Function Able to operate on front panel Load Operation Condition Machine Room F-Fan Motor Delay FunctionWater Dispenser Function Light Operation Maximum torsion point Initial OperationReverse rotation CCW Forward rotation CW Ice extraction Horizontal position Interval about 880ms Water Supply Time Water Supply FunctionIce-Making Function Ice Extraction Function Bold numerals indicate relevant ice tray steps Horizontality operation 53.6 62.6 Defrosting FunctionDefrosting period is fixed to 8 hours Arctic Zone Fresh Select Zone Function Arctic Select Zone FunctionFunction Operation Operation start Function Operation SpecificationTemp .8 ~ 44.6 of the Fridge compartment Test KEY For the R compartment Forced Defrosting Function Display Function at Panel Alarm FunctionCommunication Error Display Function When water supply is finished, in the ice maker test mode Self-Diagnostics Function Operating Instructions & Installation BAD Item Trouble Status Self-Diagnostics Checklist CR Sensor ErrorDefrosting Sensor of R Trouble CF-FAN ErrorCR-FAN Error On Error Load Condition Display Function Load Mode Checklist Load Item Load StatusRelevant displays about load status is as follows Option Setting Function Changing to Optional Mode Value Item KEY Function Change for freezer compartment Temperature Change Table for the Freezer Compartment KEY Temperature Change Table for the Refrigerator Compartment Flow sensor CR Room Temperature Shift FunctionCase of basic model, the following items cannot be set Maker For Ice Maker Disassembly and Reassembly Door Assy Removing the Front Leg Cover Removing 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 Door Water 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 Handle Plastic Drawers in the Refrigerator Refrigerator Door Light SwitchRefrigerator Light Tempered Glass Shelf Plastic Drawer in Freezer Freezer Door Light SwitchFreezer Compartments Door Bin in Freezer Tighten the screws 2 of the ice maker support Ice Dispenser Ice MakerFreezer Light Upper Ductwork Auger Motor Case Screws Pull the upper part of the evaporator cover slightly Partition in the Freezer Evaporator in Freezer Evaporator Fan Motor Water Tank Freezer ThermistorThermistor cover Screw Ice-Maker Thermistor Evaporator Fan Motor in Refrigerator Evaporator cover in the Refrigerator Fresh /Arctic Select ZoneTM Thermistor Evaporator in FridgeRefrigerator Thermistor Ductwork Thermistor Thermistor cover Upper Ductwork Water Solenoids Machine Compartment Electric BoxPCB-MAIN Assy Sub-condenser Removing the Arctic Select Zone Accessories Check at the Smps PBA Check Main PCB connection If power is not onStart Normal Exchange 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 Reference Check 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 failure Gasket, food etc Alarm Sounds continuouslyrelated to the buzzerIf Ding-Dong sounds continuously Start If Beep sounds continuously Start Replace buzzer or panel PCB If the buzzer doesn’t soundMain PCB is normal, buzzer is Normal Buzzer is broken - replace it If 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 DC Door Open DC These signals will be inputted into Micom If 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 light If 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 light Wiring Diagram Connector Arrangement Main Board Circuitschematic Diagram Conn Ector Arrangement SMP S Board A voltage proportional to Power BUS 64.7 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 Speed XAA Reference Information 13-2 Q & a Problem Possible Causes What To Do Small or hollow cubes Problem Possible Causes What To Do Compressor Sub-condenser Hot Pipe Dryer Step valve Additional InformationSuction Pipe Freezer Refrigerator