Samsung RM255BABB Training Manual Download

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DISASSEMBLY AND REASSEMBLY

How to Disassemble the Fresh Select Zone Door

1) Open the Fresh Select Zone Door.

2) Take out the box in the Fresh Select Zone.

3) Remove two screws holding it to the

liner on the left side of the rail.

If you pull out the door
completely, you will find a screw
between bracket rail and liner.
Also the other screw is located
in the center of rail on the liner.

4) Remove two screws holding it to the

liner on the right side of the rail.

5) Carefully pull out the door to the end

to separate it.

Summary of Contents for RM255BABB

Page 1: ...Side by Side Training Manual RM255BARB RM255BASB RM255BABB Maytag Technical Institute 2006 L2006 028 Samsung 2 Door 2 Drawer Convertible Side by Side Training Manual RM255BARB RM255BASB RM255BABB Maytag Technical Institute 2006 L2006 028 ...

Page 2: ... schools for additional information and brochures Miami Lakes Education Center 5780 NW 158th St Miami FL 33014 305 557 1100 EXT 2332 Center for Manufacturing Excellence 3000 Log City Trail Galesburg IL 61401 309 345 3501 Los Mendanos College 2700 East Leland Rd Pittsburg CA 94565 925 439 2181 Tulsa Technology Center 3850 North Peoria Tulsa OK 74147 7200 918 828 2038 Louisiana Technical College 111...

Page 3: ...iance may result in personal injury and property damage The manufacturer or dealer cannot be responsible for the interpretation of this information SAMSUNG ELECTRONICS AMERICA INC Technical Service Guide Copyright 2005 All rights reserved This service guide may not be reproduced in whole or in part in any form without written permission from the SAMSUNG ELECTRONICS Company WARNING ...

Page 4: ... PRODUCT SPECIFICATIONS 8 OPERATING INSTRUCTIONS INSTALLATION 13 DIASSEMBLY and REASSEMBLY 24 TROUBLESHOOTING 37 WIRING DIAGRAM 60 PCB DIAGRAM 73 CIRCUIT SCHEMATIC DIAGRAM 74 CURCUIT DESCRIPTIONS 75 REFERENCE INFORMATION 81 ...

Page 5: ...me as they did before disassembly Check the conditions surrounding the installed refrigerator When the refrigerator is located at humid or wet place or the installed state is unstable change the location If necessary instal a ground conductor This appliance must be properly grounded especially if there is a possibility of electrical leakage Do not allow consumers to use one outlet for several plug...

Page 6: ...hock Warning Warning Caution Caution Unplug Use rated components for the replacement Check for the correct model rated voltage rated current operating temperature and so on Upon repair make sure that the wires such as harness are bundled tightly Bundle wires tightly for them not to be detached by an external force and not to get wet Check if there is any trace indicating water permeation If there ...

Page 7: ... Opening or closing the door may cause things to fall down witch may cause injury Forbidden Forbidden Forbidden Forbidden Warning Caution Do not allow users to disassemble repair or alter It may cause fire or abnormal operation leading to injury Do not disassemble Do not allow users to insert the power plugs for many products at the same time May cause abnormal generation of heat or fire Forbidden...

Page 8: ...2 PRODUCT SPECIFICATIONS 2 1 Introduction of main functions 8 2 2 Model Specifications 9 2 4 Electric Parts Specifications 10 2 6 Optional Material Specifications 12 ...

Page 9: ...refrigerator does not affect food in the other compartments because of separate cooler and air flow systems Multi Flow System Cool air circulates through multiple vents on every shelf level This provides even distribution of cooling inside cabinets to keep your food fresh longer Door Alarm A beeper reminds you that the door is open Xtra FreshTM Optimized humidity control keeps vegetables fruits fr...

Page 10: ... Power Consumption Electric Heater Rated Power Consumption Refrigerator Type Refrigerant Refrigerant Input Amount Product Weight Item Specification NetCapacity Total Fridge Freezer CR Fresh Select Zone CF Arctic Select Zone 24 8 ft3 11 6 ft3 7 0 ft3 3 8 ft3 2 4 ft3 before packing 353lbs after packing 386lbs 183W 470W Dispenser without beverage station RM25 8 7 9 9 ...

Page 11: ...Freezer Components Room Temperature Sensor Components Defrost Related Components Freezer Refrigerator Defrost Cycle Defrost Cycle R Defrost Sensor Model SPEC Model SPEC Model SPEC Model SPEC F Defrost Sensor CF Defrost Sensor CR Defrost Sensor Bimetal Operating temperature FirstDefrostCycle ConcurrentdefrostofFandR Defrost Cycle FRE Defrost Cycle REF Pause time Model Starting type Oil Charge Freez...

Page 12: ...RAIN PIPE FRE DRAIN PIPE REF DISPENSER Heater WATER PIPE Heater WATER TANK Heater Condenser for COMP Package type Running Starting Model Operation Model Temp ON Temp OFF Starting Relay Over load Relay 250VAC 12 F J531Q32E4R7M182 4 7 20 4TM445PHBYY 53 257 41 156 2 48 2 115V 60Hz DREP3020LA DREP3020LA DREP3030LA AC120V 40W 2 AC120V 40W 3 AC130V 30W 1 AC130V 30W 1 AC250V 0 5A 4 AC125V 15A BSBN BRASS ...

Page 13: ...al Specifications Photograph Part Name FILTER WATER ASSY DA29 00012A ASSY INSTALL FILTER DA97 01469D INCANDENT LAMP 4713 001194 INCANDENT LAMP Refrigerator 3pcs Freezer 2pcs 120V 40W CF 1pcs CR 1pcs 130V 30W 4713 001172 Part Code Remarks 12 12 ...

Page 14: ... Type 16 3 6 Light Operation 17 3 7 Machine Room F Fan Motor Delay Function 17 3 8 Ice Maker Function 18 3 9 Defrosting Function 22 3 10 Arctic Select Zone Function 23 3 11 Select Fresh Zone Function 23 3 13 Alarm Function 26 3 14 Communication Error Display Function 26 3 15 Self Diagnostics Function 27 3 16 Load Condition Display Function 31 3 17 Operation Condition Recovery Function in Case of P...

Page 15: ...rature of the refrigerator compartment may be set to 46 34 by operation the temperature selection button for the refrigerator compartment Example 38 36 34 Power Cool 46 44 38 2 2 Temperature that has been set for the freezer compartment the refrigerator compartment may vary by a little difference depending on ambient temperature and user s food storage style Take heed because if food would contact...

Page 16: ...nt button icon display is lighted and the operation is executed If power cool is canceled by using the fridge compartment button the icon is extinguished simultaneously and the well as power cool operation is terminated instantly 2 2 The temperature setting of the freezer compartment is feasible even under the condition where power freezing has been selected 2 3 If power cool is selected COMP and ...

Page 17: ...he CRUSHED 1 6 ICE MAKER stops operation if function of ICE OFF has been selected After if cubic crushed are selected function of ice off is automatically halted so as to facilitate again execution of ice maker function that was in use before ice off The lock function is set and canceled by the ICE OFF and the LIGHT BUTTONS Lock function is set if ICE OFF BUTTON and LIGHT BUTTON are simultaneously...

Page 18: ...re always turned on regardless of WATER SWITCH and DISPENSER SWITCH operation conditions 2 Water Dispenser Function 2 1 As this function is type of direct connection to water it works so that water is extracted by opening of water solenoid valve installed at right side of machine compartment if water lever is depressed If abnormality occurred in water dispenser function repair it by checking solen...

Page 19: ... immediately if the ice tray S W comes on 3 which condition may be interpreted as the horizontal 5 1 The standby condition is maintained for 2 hours regardless of any conditions after Ice Tray horizontality operation Therefore under the initial power on condition there is no movement for 2 hours except for the ice tray horizontality operation 6 1 Ice is made if the ice making temperature has been ...

Page 20: ...tion The ice extraction function is to separate the ice in the ice extraction ice maker vessel after completing the ice making process This function is achieved by operating in accordance with to the following steps These operations are classified into full ice case and non full ice case according to the ice extraction S W condition variation 4 1 Step 1 this is stage to check firstly the ice makin...

Page 21: ...after Door Close 4 4 Step 4 motor rotation stops if the ice extraction S W turns on after 3 6 seconds have elapsed from the start of the rotation This point is the maximum torsion point and waits a second under this condition 4 5 Step 5 It is a step that ice extraction restores horizontally accomplished by reverse rotation of ice extraction motor So after step 4 the ice extraction motor turns in t...

Page 22: ... test button When the test function is normally executed the buzzer sounds ding dong and the water supply function is executed If buzzer does not sound ding dong it signifies abnormality so check and repair is needed 5 3 If the water supply has finished it then goes through a normal cycle of ice making ice extraction horizontality operation water supply again 6 ICE OFF Function Ice making can be s...

Page 23: ... or horizontality operation if the tray i tilted or distorted it is a stop condition because of F compartment door opening Then check again after more than 30 seconds have elapsed from time when the F compartment door closed if the tray has not restored its horizontal status it is ok to judge it to be a trouble failure When operation stops by the F compartment door opening during ice extraction op...

Page 24: ... item 2 above 5 The function setting mode is canceled when 10 seconds have elapsed after pressing the button and entering the Arctic function setting mode 6 The Arctic Select Zone function operates as follows OPERATING INSTRUCTIONS INSTALLATION 3 10 Arctic Select Zone Function 1 At initial POWER ON of the refrigerator the Fresh select Zone is set to Cool 2 This function is set and changed as follo...

Page 25: ...re than 8 seconds then the TEST MODE is entered Now whether the F compartment key the R compartment key the Arctic Select Zone key or the Fresh Select Zone key is pressed it operates as a TEST KEY If a TEST KEY is pressed the test function is changed in sequence to forced operation start FF forced R CR defrosting forced R CR F CF defrosting test cancellation normal operation forced operation start...

Page 26: ... selected 6 1 If forced start operation is finished 24 hours then F CF compartment defrosting is executed regardless of previous condition 7 1 Next it proceeds normal defrosting opera according to CASE judgment performing defrosting of the R compartment defrosting 8 1 If randomly canceled during forced start operation by cancellation mode the COMP ON time period during the forced start operation i...

Page 27: ...f a communication request from the PANEL MICOM the PANEL PCB repeats ON OFF until the communication error is cleared by repeting ALL ON for 0 5 second and ALL OFF for 0 5 second 2 Display Function at MAIN LOAD MICOM Communication Error 2 1 If 10 seconds elapse without response after transmission of a communication request from the MAIN MICOM to the LOAD SUB ORDINATE MICOM then the PANEL PCB DISPLA...

Page 28: ...setting the Refrigeration setting keys are pressed simultaneously for 6 seconds during normal refrigerator operation the temperature setting display flickers ALLON OFF with 0 5 second interval for about 2 seconds The Self Diagnostics function is selected when the freezing setting the Refrigeration settingkeys are pressed simultaneously for about 8 seconds including the 2 seconds during which theLE...

Page 29: ...lity in R compartment Ice maker operation abnormality Abnormality in defrosting system for R compartment CR compartment sensor system abnormality Abnormality in defrosting sensor system for CR compartment Abnormality in defrosting sensor system for CF compartment Abnormality in defrosting system for CR compartment Abnormality in defrosting system for CF compartment Water heater system abnormality ...

Page 30: ...atingformorethan70min fortheRcompartment Electric wire cut short circuit contact failure sensor housing missing while in case of displaying a temperature defect it is only displayed when sensor detection temperature is not lower than 122 nor higher than 58 Electric wire cut short circuit contact failure sensor housing missing while in case of displaying a temperature defect it is only displayed wh...

Page 31: ... detection temperature is not lower than 122 nor higher than 58 ErroroccursandisdisplayedwhenregardingtheFcompartmentdefrostingheater thereisaelectricwire cut short circuit contactfailure ofsensorhousingmissing ordefectivetemperaturefuse Adefectis displayedifdefrostingisnotfinishedaftercontinuousheatingformorethan80min fortheFcompartment Error is displayed in case there is a contact failure on the...

Page 32: ...ollows LOAD MODE CHECKLIST No LOAD ITEM LOAD STATUS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 R FAN HIGH R FAN LOW R DEF HEATER START MODE OVERLOAD MODE LOW TEMP MODE DISPLAY MODE COMP F FAN HIGH F FAN LOW F DEF HEATER C FAN HIGH C FAN LOW DISPENSER HEATER R VALVE CR FAN CR DEF HEATER ICE PIPE HEATER F VALVE CF FAN CF DEF HEATER WATER HEATER ORDINARY CONDITION R FAN High speed rotat...

Page 33: ...frigeration setting of the freezer compartment setting of the refrigerator setting of Arctic Select Zone setting of Fresh Select Zone ice type lock condition etc related to PANEL DISPLAY are restored 3 If the temperature in freezer compartment is judged to be above 41 F at initial POWER ON it is judged to be a long term electricity interruption and PANEL DISPLAY is initialized Automatic settings f...

Page 34: ...t 12 seconds under normal operating condition display is converted to an option setting mode 3 After changing to option mode display of 0 is lighted on the freezer compartment and refrigerator compartment respectively Though it is supposed to be delivered from warehouse as such 0 for freezer compartment and 0 for refrigerator compartment the standard set values could have been changed during mass ...

Page 35: ...ate control ice maker sensor temperature change CR compartment temperature control etc are available in the same manner as above 7 Abstain from making random changes at your will except in special cases because every refrigerator product is delivered from the factory with the option functions set in EEPROM And if you change a setting option at your will don s turn off electric power before recover...

Page 36: ... 2 3 4 5 6 7 8 9 10 11 12 13 14 15 32 31 1 30 2 29 3 28 4 27 5 26 6 25 7 32 9 33 8 34 7 35 6 36 5 37 4 38 3 39 2 Option Value RCompartmentSetvalue fortemperaturedisplay KEY Temperature Shift for the Freezer Compartment Common for all models Position R compartment temperature display 0 MODEL Option Item ITEM OPTION VALUE Application Example When to heighten the reference temperature of the Refriger...

Page 37: ...m Ice extraction wait time control for ice maker Wait time for ice tray 3 Display Position TemperaturedisplayoftheRefrigeratorcompartment Setting Item Standard temperature control for ice maker sensor 4 Display Position TemperaturedisplayoftheRefrigeratorcompartment Displayofthefreezercompartment 58 minutes 57 minutes 56 minutes 55 minutes 54 minutes 53 minutes 52 minutes 51 minutes 50 minutes 49 ...

Page 38: ...50 Freezer Light 50 Auger Motor Case 51 Upper Ductwork 51 Partition in the Freezer 52 Evaporator Cover 52 Evaporator Fan Motor in Arctic Select Zone 53 Evaporator Fan Motor 53 Evaporator in Freezer 53 Freezer Thermistor 54 Ice Maker Thermistor 54 Water Tank 54 Partition in the Refrigerator 54 Evaporator Cover in the Refrigerator 55 Evaporator Fan Motor in the Refrigerator 55 Evaporator in Refriger...

Page 39: ... the lever hook on the connector and disconnect the wires Pull the leg font cover down with both hands and remove it by lifting it up with the upper rib And then disengage the lower hooks Lift the door straight up Be careful not to pinch the water tubing and wire harness on the door Place doors on a protected surface NOTE FRONT LEG COVER RIB HOOK 5 1 Door Assy 38 38 ...

Page 40: ... door 5 Remove hinge screws 2 Remove the water tube by pressing the coupler ring and pulling the water tube away 3 Pull and open the latch and take off the door hinge along the arrow Be careful when removing the door to ensure that it does not fall on you Do not cut the water tube Separate it from the coupler NOTE 39 39 ...

Page 41: ...igerator Door 3 Remove the door from the lower hinge by lifting the door 4 Remove the hinge screw 1 With the door closed remove the upper hinge cover using a screwdriver 2 Pull and open the latch and take off the door hinge along the arrow 40 40 ...

Page 42: ...ve two screws holding it to the liner on the left side of the rail If you pull out the door completely you will find a screw between bracket rail and liner Also the other screw is located in the center of rail on the liner 4 Remove two screws holding it to the liner on the right side of the rail 5 Carefully pull out the door to the end to separate it 41 41 ...

Page 43: ...into the hole After levelling between the hinge brackets Reattach and close the latch 4 Connect the wires and the water tube 5 Put the front part of the upper hinge cover on the front part of the upper hinge and reattach it from the front part of the upper hinge cover first 6 Reattach the hinge screw NOTE 12 11 Be sure to insert the water tube and push it to the end 42 42 ...

Page 44: ...over the hinge 3 Insert the upper hinge shaft into the hole After levelling between the hinge brackets Reattach and close the latch along the arrow 4 Put the front part of the upper hinge cover on the front part of the upper hinge and reattach it from the front part of the upper hinge cover first 5 Reattach the hinge screw 43 43 ...

Page 45: ...nto the locking tabs RIB HOOK LEVELLING If the front of the appliance is slightly higher than the rear the door can be opened and closed easier The appliance tilts down to the left Turn the left adjusting leg in the direction of the arrow with a flat head screwdriver until the appliance is level The appliance tilts down to the right Turn the right adjusting leg in the direction of the arrow with a...

Page 46: ...move two screws holding it to the liner on the left side of the rail 4 Remove two screws holding it to the liner on the right side of the rail 5 Pull out the door carefully to the end to separate it If you pull out the door completely you will find a screw between bracket rail and liner Also the other screw is located in the center of rail on the liner 45 45 ...

Page 47: ...ing and pushing up at the front 2 Remove the water filter from the box then position the arrow of the cartridge in line with the cartridge cover 3 Insert the filter as shown and Push until you hear the clicking sound 4 Close the filter cartridge cover Install the water filter The water filter cartridge is located at the upper right corner of the refrigerator compartment When the display in the con...

Page 48: ...hey are front mounted with screws 1 Remove the screw on the upper part of the handle 2 Lift the handle upward The door gasket is a molded gasket set into a channel located in the door liner 1 Open the door 2 Grasp the gasket and pull it out until the molded gasket separates from the door liner DISASSEMBLY AND REASSEMBLY Control Panel Door Handle Door Gasket 5 2 Door Sub Parts screw screw 47 47 ...

Page 49: ...hen pull out 3 After changing the bulb reattach the bottom light cover then the upper light cover These shelves allow the storage of larger items and easy access by pulling out 1 Pull the shelf out as far as it goes 2 Lift it up and remove it Drawers are designed for storing fruits vegetables and deli items The drawers are located in the lower portion of the refrigerator 1 Pull out the drawer as f...

Page 50: ...nnector and remove the switch Drawers are designed for storage of meat and dried foods The drawers are located in the lower portion of freezer 1 Pull out the drawer as far as it goes 2 Tilt the drawer up and pull it out until it is removed The shelves slide out for easy access to frozen items 1 Slide the shelf out as far as it goes 2 Tilt it downward and pull it out of the compartment Door Bin in ...

Page 51: ...h the Locking Tab 1 and pull 2 the Ice Maker Kit In order to assemble the Icemaker Kit 1 Align the Geard Motor Shaft with Ice Tray hole to assemble 2 Slide the IceMaker Kit like the arrow 1 3 Connect the ice maker wire connector 4 Align the tab holes with tabs 2 located in the top of liner and slide the ice maker inward 5 Tighten the screws 2 of the ice maker support The freezer light is located i...

Page 52: ...n the side of the case 2 Slide the case out while disconnecting the wire connector Upper Ductwork Auger Motor Case DISASSEMBLY AND REASSEMBLY Screws 1 Remove the screw cap and screw 2 Slide the upper fan ductwork out while disconnecting the wire connector Lamp and Thermistor SCREW 51 51 ...

Page 53: ... in the center of insulation partition and lift it up slightly And then open the door in the power compartment and lift it upward to separate PARTITION IN THE FREEZER For the disassembly of evaporator cover water tank and partition should be disassembled first 1 Remove the cap screws 2 pieces and then remove other screws 4 pieces screws 2 Pull the upper part of the evaporator cover slightly 3 Sepa...

Page 54: ...or is located in the bottom of the freezer 1 Take off the freezer partition in 2 Disassemble the fan motor 3 Disconnect the wire connector Heater Bimental and Thermistor 4 Desolder the inlet and outlet tubes 5 Remove the evaporator 6 Take the same steps as above to confirm the system Evaporator in Freezer The evaporator fan is located in the lower rear of the refrigerator This fan circulates cold ...

Page 55: ...the lower part of refrigerator For the disassembly of partition water tank should be disassembled first 1 Unscrew the partition 2 screws 2 Insert the flat tip screwdriver into the center groove of the partition and lift it up PARTITION IN THE Fridge Thermistor cover screw Ductwork Thermistor Thermistor ice maker Freezer Thermistor The refrigerator thermistor is located inside of the light cover of...

Page 56: ...ation partition upward to separate DISASSEMBLY AND REASSEMBLY evaporator cover in the Refrigerator 2 Pull the upper part of the evaporator cover slightly 3 Separate the housing terminal connected to the right side of evaporator cover and lift it up carefully using both hands The evaporator fan is located in the middle rear of the freezer This fan circulates cold air in the freezer 1 Remove screws ...

Page 57: ...ate and recharge the system using reasonable procedures The refrigerator thermistor is located inside the refrigerator light cover 1 Put your finger into the side groove of the lamp cover and pull the cover to separate 2 Remove the screw in the lower part of Ductwork and pull the Thermistor cover 3 Separate the housing inside the of Thermistor cover and replace the sensor Fresh Arctic Select Zone ...

Page 58: ...ensor cover in the lower part of duct work And then separate the housing terminals lamp thermistor and pull them out using both hands The Evaporator Fan Motor in the Fresh Select Zone is located in the lower part of the cooling compartment 1 Unscrew the fan cover 2 screws Evaporator Fan Motor in Fresh Select ZoneTM 2 Separate the insulation covering the fan by removing the sponge and tape 3 Separa...

Page 59: ...the sub condenser Machine Compartment Electric Box Sub condenser DISASSEMBLY AND REASSEMBLY Desoldering Point PCB MAIN ASSY The condenser Fan is located in the middle of the machine compartment It cools down the sub condenser and the compressor 1 Disconnect the condenser fan wire 2 Separate the condenser fan hook attached to the drain water tray by slightly lifting and pulling the condenser fan 3 ...

Page 60: ...Hold the front side of cover and pull it out Lift the front side of basket first and then take it out carefully Open the door and pull the Arctic Select Zone Door out to the end to take the basket out Open the Fresh Select Zone door Hold the front side of upper drawer and pull it out Pull the front side of upper cover out Pull the front side of cover out Lift the front side of basket first and tak...

Page 61: ...246Y Is 12V applied both terminals of C16 Is 5V applied both terminals of C19 Does Panel PCB work normally Is the load such as of relays and others normal Is there any short or break of PCB soldering Normal Start To check the main PCB please see the operation descriptions and references in the manual NO YES YES NO YES YES YES YES YES NO YES Check the connection and assembly of electric wires NO Ex...

Page 62: ...ressor work with forced operation VoltagevalueofMICOMpinNo 9 High 5V Open and repair the connection Troubleshoot the sensor pant and Exchange PCB Is the voltage on IC73 pin No 16 0 8V Open and repair the connection Is the CN72 connector normal Check connector for contact failure Is COMP assembly normal Exchange and repair COMP Assembly Normal NO YES YES NO NO NO NO YES YES NO YES YES YES NO YES NO...

Page 63: ...gsensorbelow23 Run forced operation for a specified period Repair the connection of terminal Perform forced defrosting for F and R room one at a time Normal Check temp fuse breakn of heater contact of wire and so on Exchange or troubleshoot the failure relay or exchange PCB assembly Ispowerappliedtothe respectivedefrostingheaters Doesreturntothecooling operation afterheatingforaspecifiedperiod Is ...

Page 64: ...hen power is initially impressed to refrigerator the product will not work and display is repeatedly blinking in the trouble occurred sensor Even if sensor has failure during the oeration refrigerator will not stop working but can t run the normal cooling operation because of being operated in the Emergency Operation mode Thus be sure to follow instructions in the manual when you make self diagnos...

Page 65: ...bleshoot the breaking of wire and bad door S W Main PCB and door S W are normal Yes Yes No NO NO Troubleshoot if connector is not inserted or poor contact NO inserted or poor contact Exchange the door S W NO YES Isconnector CN30 inserted correctly YES Main PCB and door S W are normal YES 2 If Beep sounds continuously Did you select forced operation andforceddefrosting Start Release the forced oper...

Page 66: ...S YES NO NO YES NO Replace buzzer or panel PCB Didacomponentleadfallonthe vibrationplateofbuzzer YES NO 68 3 If the buzzer doesn t sound This model is equipped with the buzzer on the Panel PCB If buzzer doesn t sound in case of button operation forced operation or door opening separate the panel PCB first to check if buzzer is broken or there are any soldering failures It is not easy to troublesho...

Page 67: ... 3 CheckthepanellightingcircuitsectionwithinthemainPCBforshortoropen 1 Checkdoorwireoffreezer checkbreakingofwire shortbetweenwires 2 ChecktheCABIwireoffreezer checkbreakingofwire shortbetweenwires 3 CheckforShort OpenofthePanelCommunication PowerSupplypartsofmainpcb NO NO YES YES NO Panel PCB itself has trouble YES YES Do lights operate normally when replacing panel PCB NO NO Recheck after releas...

Page 68: ... fan motor rotation pulse for fan motor operation See the details in Fan Motor Drive Circuit section NO YES YES NO NO YES Isthevoltage8V 12VDCbetween main PCBGNDandpinNo 5ofCN74 Isthevoltage5VDCbetweenCN30 No 8andNo 14inthemain PCB NO Isthevoltage8 12VDCbetween main PCBGNDsectionandCN74pinNo 4 NO YES Does7 12VDCalternatewithlassthan 2VDCbetweenmain PCBGND ndCN74pinNO 6 Exchange or troubleshoot the...

Page 69: ...etweenGNDofthe main PCBsectionand CN76pinNo 5 IsthevoltageDC5Vbetweenthemain PCBsectionCNNo 9andNo 14 NO YES DoesDC0ValternatewithDC12Vbetween GNDofthemain PCBandCN76pinNo 2 Exchange or troubleshoot the main PCB Measure with the closed door Door Open DC 0V Door Close DC 5V NO YES CN76No 3 C F FAN pinno 6 C R FAN willgetpulsesignals whichisgeneratedwhenthemotorrotates Thesesignalswillbeinputtedinto...

Page 70: ...enpressingices w YES Didcubemotormovetoicecrushed location LoadMICOMNo 28is5V YES DoesIC74No 17changeto0V whenpressingandholdingices w YES IsRY7ERELAYcontactterminal 0Ωevenwhenpoweroff YES Check point of contact of ice drawing S W Check point of contact of door S W Checkpointofcontactoficetransfermotor Checkpointofcontactforwiringoftheicetransfermotor Istheiceselectiononpanel foriceoff Releasethei...

Page 71: ...inside lamp socket YES NO Replace or troubleshoot control relay NO NO YES Is the point of contact of the F DOOR S W normal YES Caution Theindoorlamprelayperformsturn on turn offas thedooropens closes Ifindoorlampdoesn t lightup checkuptheoperationnoiseofrelay Thenoiseofrelayoperationwillbeheard wheneveropening closingthedoor Pleasesee 10 4 DoorSWITCH S W and 10 4 ACLOADOperationCircuit inthe 10 14...

Page 72: ... work normally when selecting water Start Normal Working Condition Was dispenser water s w pressed DoesMainMICOMNo 13maintain 0V when pressing water s w DoesIC74No 16maintain0V when pressing water s w IsRY70relayACcontactterminal 0Ω when pressing water s w Checktheinstrumentalinterference ofdispenserwaters w Normal Main PCB Need to check other sections Check the wire between WATER SOLENOID VALVE a...

Page 73: ...pplied parts in the dispenser Caution DIAGNOSTIC 6 11 If Dispenser LED Lamp doesn t light DoesthedispenserLED lampturnonwhenpressing dispensericeorwaters w Start Check if ice or water s w themselves have a poor contact when it works intermittently Is the Main MICOM No 14low 0V whenpressingices w IstheMainMICOMNo 13low 0V whenpressingwaters w Replace connector wire and switch Is the panel operation...

Page 74: ...9 WIRING DIAGRAM 73 73 ...

Page 75: ...PCB DIAGRAM 10 2 CONNECTOR ARRANGEMENT Main Board 74 74 ...

Page 76: ...CIRCUIT SCHEMATIC DIAGRAM 75 75 ...

Page 77: ...Circuit Descriptions 10 3 CONN ECTOR ARRANGEMENT SMP S Board 76 76 ...

Page 78: ...SMPS TRANS At the same time the rectified DC voltage is applied into No 2 of U5 TOP246Y 08 through R24 and R25 and starts initial IC operation With the role of SNUBBER Circuit D1 R18 C7 TVS1 C8 also controls the switching wave formed P P voltage to protect U5 IC R21 2W470K is the parts that special regard must be paid to the safety against potential electric shock during SVC which is charged with ...

Page 79: ... 4 82 4 65 4 49 4 33 4 18 4 03 3 89 3 76 3 63 3 51 3 39 3 28 3 17 3 06 2 96 2 86 2 77 2 68 2 59 2 51 2 43 2 35 2 28 2 21 Voltage V 4 54 4 52 4 49 4 47 4 44 4 42 4 39 4 36 4 33 4 30 4 27 4 24 4 20 4 17 4 13 4 10 4 06 4 02 3 99 3 95 3 91 3 86 3 82 3 78 3 73 3 69 3 64 3 60 3 55 3 50 3 46 Temp 12 2 14 0 15 8 17 6 19 4 21 2 23 0 24 8 26 6 28 4 30 2 32 0 33 8 35 6 37 4 39 2 41 0 42 8 44 6 46 4 48 2 50 0...

Page 80: ...AN MOTOR will be operated in the order 12V CN76 C F FAN Vcc C F FAN GND CN76 IC75 18 PIN GND 6 Here with normal operation of the FAN MOTOR a square wave is generated in MOTOR FG and this wave is input as follows MOTOR FG CN76 R413 MICOM 8 7 Using this FG signal it can be determined whether the FAN MOTOR is operating normally and in case of FG signal errors FAN motor errors are detected to use as r...

Page 81: ...e applied OP AMP 13 PIN as shown in the Figure A certain voltage is applied OP AMP 13 according to the operation of MICOM 37 HIGH RPM 36 LOW PRM Tripled by this voltage Gain value currently set you may get the voltage applied the motor If OP AMP 13 PIN voltage is 3V 9V is impressed into motor by 3V x 3 9V formula 3 COMPARISON IN HIGH LOW SPEED 12 9 INTERNAL REFRIGERATOR FAN MOTOR OPERATING CIRCUIT...

Page 82: ... VQ BISQUE GLOSSY BB BLACK PCM Door sprayed body SL NOBLE STAIN RS REAL STAINLESS RB REAL STS BLACK CABINET RP Real STS PCM CABI SH Stainless Platinum SB Stainless Platinum BLACK CABINET PJT derivation sequence inside TYPE Type SBS BMF Multi not a production year A first generation of next pjt B second generation of next pjt C third generation of next pjt SUB OPTION buyer type SUB OPTION by trader...

Page 83: ...tor That makes refrigerator s temperature lower quickly and saves the power consumption Condensation can occur when you leave the door open for a long time Did you stop the ice making function Is there any ice in the storage unit Is the water pipe connected and the shut off valve open Is the freezer temperature too warm Did you wait for 12 hours after installation of the water supply line before m...

Page 84: ...of the freezer clogged Cubes jammed in chute Supply line or shutoff valve is clogged Water filter clogged Dispenser is LOCKED Replace filter cartridge with new cartridge or with plug Check to see if a package is holding the door open See about the controls This is normal Turn on icemaker or water supply Remove cubes and move the feeler arm to the ON position Break up with fingertip pressure and di...

Page 85: ...ssor Sub condenser Hot Pipe Dryer Step valve R Capillary Tube R CR evaporator C Capillary Tube REFERENCE INFORMATION 13 3 Additional Information F Capillary Tube CF F evaporator Suction Pipe comp 3 Way 84 84 ...

Page 86: ...REFERENCE INFORMATION Freezer Refrigerator 85 85 ...

Page 87: ...Notes ...

Page 88: ...Be Aware Be Alert Always work safely On the Job On the Road In the Home Every Time All the Time ...

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