Samsung RS2511 series Service Manual Download

Page: 60 / 73

Diagnostics

Change Temp Sensor

Is Freezer Temp Sensor

normal?

Start

YES

Connector contact trouble

/re-insertion

Is the insertion of MAIN PCB

connector(CN30) normal?

YES

Short between connector Sensors

Is the connection between

MAIN PCB connector(CN30) and Temp

Sensor(yellow) normal?

YES

Check soldering fault,short,

Lead Touch

Is MICOM Pin#57 input

voltage normal?

YES

Change MAIN PCB

Change Defrost Sensor

Is Defrost Sensor

normal?

Start

YES

Connector contact trouble

/re-insertion

Is MAIN PCB (CN30)

insertion normal?

YES

Short between connector Sensors

Is the connection wire between

MAIN PCB connector(CN30) and

Defrost Sensor (blue) normal?

YES

Check soldering fault, short,

Lead Touch

Is MICOM Pin#58 input

voltage normal?

YES

Change MAIN PCB

4) Defrost Sensor trouble

3) Freezer Temp Sensor trouble

Summary of Contents for RS2511 series

Page 1: ...SIDE BY SIDE REFRIGERATOR SAMSUNG Home Appliance Service ...

Page 2: ...e 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 ⓒ2004 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 3: ...s 1 Safety instruction on services 4 2 Warranty information 9 3 Mechanical Disassembly 14 4 Circuit Diagram 15 5 Operation Principles By Parts Of Circuit 16 6 Introduction 29 7 Installation 30 8 Nomenclature 31 ...

Page 4: ...mbled state when compared with the state before disassembly Check the surrounding conditions of the installed refrigerator When the refrigerator is located at humid or wet place or the installed state is unstable change the location If needed do the ground Especially if there is a possibility of the electric leakage this appliance must be properly grounded Do not allow consumers to use one outlet ...

Page 5: ...uses for which this product was not intended altered product or serial numbers cosmetic damage or exterior finish accidents abuse neglect fire water lightning or other acts of nature use of products equipment systems utilities services parts supplies accessories applications installations repairs external plumbing and leaks external wiring circuit breakers fuses or connectors not supplied and auth...

Page 6: ...ilter 8 Damper in the Refrigerator 9 Twin cool in the Refrigerator 9 Refrigerator Thermistor 9 Door Bin in Freezer 10 Freezer Door Light Switch 10 Plastic Wire Drawer in Freezer 10 Freezer Shelf 10 Ice Dispenser Ice Maker 10 Auger Motor Case 11 Freezer Light 12 Evaporator Cover in Freezer 12 Evaporator Fan Motor 12 Evaporator in Freezer 13 Freezer Thermistor 13 Ambient Thermistor 13 Ice Maker Ther...

Page 7: ...d motion until it disengages the locking tabs Pull the handle outward to remove it 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 in an outward motion until the molded gasket separates from the door liner The refrigerator has a door light switch located in the upper right corner for the refrigerator 1 Use a small flat bla...

Page 8: ...t goes 2 Tilt the drawer up and pull it out until it is removed The door bins allow storage of perishable items 1 Push the bin up and slide it out The water filter is located in the bottom left hand corner of the refrigerator The water filter filters water for the ice maker and the water dispenser 1 Turn the water filter 1 2 turn counterclockwise and pull it down 2 To install the filter align the ...

Page 9: ...over down 3 Remove the screw at the cover damper 4 Take off sensor and lamp wire connector located on the upper liner 6 Remove the damper from the refrigerator 1 Pull out the Twin cool by unlocking the hooks The refrigerator thermistor is located inside of the upper light cover of the refrigerator Twin cool in the Refrigerator Refrigerator Thermistor THERMISTOR ...

Page 10: ...connector and remove the switch Drawers are designed for storage of meat and dry foods The drawers are located in the lower portion of the 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 for frozen items 1 Slide the shelf out until it reaches its stop 2 Tilt down and slide it out of thecompartment Door B...

Page 11: ...t of ice tray 2 Lift the front locking tab and assemble the ice maker kit 3 Connect the ice maker wire connector 4 Match the tab holes and tabs 2 located on the top of the liner and slide the ice maker in 5 Tighten the screws 2 of the ice maker support This shelf is designed to support the ice maker ice dispensed and Xtra SpaceTM 1 Remove the Xtra SpaceTM cover to push it down and pull front 2 Sli...

Page 12: ... than remove fan and protector motor 2 Remove screw located at the four corners of the fan bracket 3 Take the fan motor assembly off 1 Remove screw 6 2 Remove the assy cover multi fre 3 Remove the assy cover supt motor fre 4 Remove screw 2 5 Remove the cover evap front 6 Disconnect the sensor wire connector Evaporator Fan Motor Freezer Light Evaporator Cover in Freezer Mechanical Disassembly ASSY ...

Page 13: ...and outlet tubes 4 Remove the evaporator 5 Take the same steps to seal the system as mentioned earlier The freezer thermistor is located at the top left of freezer vent It sends temperature signals to the micro processor The Ice Maker thermistor is located in its bottom The temperature signal sends the micro processor Evaporator in Freezer Mechanical Disassembly Freezer Thermistor Ice MakerThermis...

Page 14: ...binet 2 Take the solenoids assembly out 3 Disconnect water tubes The condenser Fan is located in the middle of machine compartment It cools down the sub condenser and the compressor 1 Lift up the rib under the support motor 2 Pull the support motor The condenser is located in the machine compartment The heat is extracted by condenser fan 1 Desolder the compressor discharge the condenser outlet 2 T...

Page 15: ...15 4 CIRCUIT DIAGRAM ...

Page 16: ...s through the diode D101 and D104 is changed to DC and provide constant 12V It provides 5V to MICOM and other circuits via regulator REG102 MC7805ACT and make entire PCB operate It is an Oscillation Circuit for synchronism clock generation and time calculation on the information sending receiving of the MICOM internal logic elements and when specifications for Resonator change the timing system of...

Page 17: ...failure Upon the power supply the reset terminal voltage becomes LOW for several tens of compared to Vcc voltage DC 5V at MICOM and it maintains HIGH Vcc Voltage during normal operation But when Vcc drops down to 3 4 3 7V the reset terminal voltage becomes LOW A semiconductor memory EEPROM stores data remembering previous settings regardless of power off which are indispensable especially in power...

Page 18: ...des 5 volt which is recognized as door is opened and turn off the fan at different load When the door is closed the voltage goes out from R402 to Switch the MICOM is applied with OV and the door is recognized as closed 3 Q401 is the circuit to turn off the auger motor operation when the door is opened If the door is closed Vcc voltage of R402 works as ground via door switch OV is applied to the ba...

Page 19: ...n and vice versa R302 4 6 9 and C301 C303 C305 are parts for noise prevention but they are not related to temp sensing characteristics 2 If Vf is the incoming voltage to MICOM in case of F Sensor Vf equals Rth Vcc R301 Rth Where Rth is resistance of THERMISTOR corresponding to Temp Please refer to the Appendix Temp to Sensor Resistance Voltage conversion table Temp to MICOM Terminal Voltage includ...

Page 20: ...67 8526 Voltage V 3 773 3 729 3 685 3 64 3 594 3 548 3 501 3 453 3 405 3 356 3 307 3 258 3 208 3 158 3 107 3 057 3 006 2 955 2 904 2 853 2 802 2 751 2 7 2 649 2 599 2 548 2 498 2 449 2 399 2 35 2 301 Temp 12 F 11 1 C 13 F 10 6 C 14 F 10 0 C 15 F 9 4 C 16 F 8 9 C 17 F 8 3 C 18 F 7 8 C 19 F 7 2 C 20 F 6 7 C 21 F 6 1 C 22 F 5 6 C 23 F 5 0 C 24 F 4 4 C 25 F 3 9 C 26 F 3 3 C 27 F 2 8 C 28 F 2 2 C 29 F ...

Page 21: ...on to make the damper open or close 3 Since the damper always touches the cold air DC 12V 1W heater is installed always on to prevent the malfunction from moisture and is controlled on conditions Operation conditions can be changed Micon 15 pin connected to IC4 controls the damper heater like category 3 1 KEY SCAN When Grid 6 is output this signal goes through PCB resistance 10 and provided to pow...

Page 22: ...al via input terminal of IC5 KID65783AP or TD62783AP Output wave always goes through LED input terminal with DC11 12V on every period At this time if SINK signal comes out at IC4 DC11 12V is applied to LED input terminal and output terminal sinks to OV which turn on LED for 2ms For example to turn on Power Fre LED IC4 16 pin sinks to 0V when IC5 16 becomes DC 11 12V making Power Fre LED turn on GR...

Page 23: ... pin 15 of IC3 via coil and goes into the ground While current flows to the coil the magnetic power arise it turns on the secondary contact point inside of RY75 and operates when the AC power is supplied to the both side of comp When MICOM 29 Pin becomes Low 0V IC3 4 Pin becomes Low which makes Power cut and current of RY75 RELAY cut So secondary contact becomes off due to magnetic field cut which...

Page 24: ...d in common 11 output port of IC4 gets on and the current flows into Ground making motor rotates This motor rotates the gear and rotates the ejection tray The tray twists to separate the ice from the tray and return to the horizontal state 3 For restoration motor stops for 2 seconds when the ejection is completed and to rotate in opposite direction output horizontal MICOM port with high and perfor...

Page 25: ...on and turned on after the modification Refer to the table below the default factory values are highly recommended unless exceptional cases OP11 OP12 OP11 OP12 MODEL RS2 11 RS2 21 RS2 31 FUNTION No Cruch 3 Step Light Cruch 3 Step Light Cruch 5 Step P F L T Lock Filter Indicator D601 D602 Fill Time 5 Sec 6 Sec 7 Sec 10 Sec Remark Flow Sensor Not USE Jumper USE OP2 Water Fill Time Control Option Dio...

Page 26: ...GSLIPPEDAWAY COIL WIRESHORT COIL WIRECUT COIL WIRESHORT COIL WIRECUT COIL WIRESHORT COIL WIRECUT COIL WIRESHORT COIL WIRECUT MOTOR WIRESHORTMOTOR WIRECUTOR HOUSINGSLIPPEDAWAY MOTOR WIRESHORT MOTOR WIRECUTORHOUSINGSLIPPEDAWAY WATER VALVE ICE MAKER CN70 CN71 0Ϊ Ϊ WATER VALVE DISPENSER CN70 CN71 0Ϊ Ϊ AUGER MOTOR CN70 CN71 0Ϊ Ϊ CUBE SOLENOID CN70 CN71 0Ϊ Ϊ COMP FAN MOTOR CN71 0Ϊ Ϊ F FANMOTOR CN71 0Ϊ Ϊ...

Page 27: ...ACTOPEN FAULTYDRIVINGCIRCUIT RY74NOCONTACTOPEN FAULTYDRIVINGCIRCUIT RY79NOCONTACTOPEN FAULTYDRIVINGCIRCUIT RY77NOCONTACTOPEN FAULTYDRIVINGCIRCUIT RY71NOCONTACTOPEN FAULTYDRIVINGCIRCUIT RY72NOCONTACTOPEN FAULTYDRIVINGCIRCUIT Turn on Power and check status of Relay Driving Circuit by checking followings according to load operation Check after disassembling connected to MAIN PCB CN30 CN32 Because it ...

Page 28: ...of CODE for MAIN PCB ASS Y PART can be changed according to MICOM or Option change so check it when asking for parts Appendix Ⅰ Ⅰ Reference for circuit diagnostics Ref 3 SERVICE PARTS LIST FOR CIRCUIT DA41 00219A DA41 00219B DA41 00219C DA41 00218A DA41 00218B DA41 00235A DA41 00235B DA41 00217A DA26 00022A DA26 00022B DA32 00006D DA32 00006B PBA PANEL IN CODE NO 1 2 3 4 5 PBAMAIN PBA PANEL PBA LA...

Page 29: ...rough side vents on every shelf level This provides even distribution of cooling inside cabinets to keep your food fresh longer 2 Xtra SpaceTM Vertical room next to the ice maker in the freezer provides space for pizza etc 3 Door Alarm Beep sound reminds you the door is open 4 Vegetable Crisper Optimized humidity control keeps vegetables fruits fresh ...

Page 30: ...k upper side 3EA lower side 3EA of the front leg With the door closed remove the upper hinge cover using a screwdriver and then disconnect the wires Remove hinge screws and ground screw counter clockwise and take off the upper hinge Take care removing the door to ensure that it does not fall on you Remove the door from the lower hinge by carefully lifting the door so as not to damage the water tub...

Page 31: ... 30 SW XAA Product R SAMSUNG REFRIGERATOR B OEM REFRIGERATOR Capacity 25 26 cu ft Family S SIDE BY SIDE SBS OPTION 30 BEST BUY 11 21 31 SAMSUNG COLOR WW WHITE PCM SH STAINLESS PLATINUM SW SNOW WHITE Buyer Code XAA XAC CUR Label Location ...

Page 32: ...IN RS2 11 DA41 00216A PBA MAIN RS2 21 DA41 00217B PBA MAIN RS2 30 DA41 00218C PBA MAIN RS2 31 DA41 00219D PBA PANEL RS2 11 DA41 00218A PBA PANEL RS2 21 DA41 00218B PBA PANEL RS2 30 DA41 00235A PBA PANEL RS2 31 DA41 00235B TRANS DC 115V 60Hz DA26 00022B TRANS DC 220V 50 60Hz DA26 00022C TRANS DC 127V 60Hz DA26 00022D SENSOR DEF SENSOR DA32 00006D SENSOR F SENSOR DA32 00006D SENSOR R SENSOR DA32 000...

Page 33: ...wer lower Spill proof glass Shelf Tempered glass Shelf RS2511 RS2611 RS2521 RS2621 RS2531 RS2631 CAUTION Preparing to Move Secure all loose items such as shelves and drawers by taping them securely in place to prevent damage When using a hand truck to move the refrigerator do not rest the front or back of the refrigerator against the hand truck This could damage the refrigerator Handle only from t...

Page 34: ...9 Interior Views and Dimensions 29 5 35 6 32 2 32 1 3 4 4 4 3 4 20 1 15 2 64 5 67 9 35 8 46 2 16 4 51 2 21 4 5 2 Dimensions of Refrigerator RS26 Inches ...

Page 35: ...10 Interior Views and Dimensions 29 5 34 9 31 9 32 1 3 4 4 2 0 20 1 15 2 64 5 69 7 35 8 45 9 16 4 50 9 21 4 5 3 Dimensions of Refrigerator RS25 Inches ...

Page 36: ...lary Tube Evaporator Suction Pipe Compressor Capillary Tube Accumulator Evaporator Suction Pipe Dryer Muffler Condenser Hot Pipe Hot Pipe Compressor 6 Refrigeration Cycle and Cool Air Circulation Route 6 1 Refrigerant Route in Refrigeration cycle ...

Page 37: ...12 Refrigeration Cycle and Cool Air Circulation Route 6 2 Cool Air Circulation Freezer Refrigerator ...

Page 38: ...13 7 Function How to use By Products 7 1 DISPLAY DESIGN RS2630SW XAA for Best Buy RS2531 RS2631 RS2521 RS2621 RS2511 RS2611 ...

Page 39: ...es the previous temp and functions stored in EEPROMforuse It is selected with Power Freeze Button Each time you press Power Freeze Button it repeats SELECT CANCEL Relevant ICON ON OFF When Power Freeze is selected the temp settings of Refrigerator Freezer does not change When Power Freeze is selected it is possible to change the temp settings of Refrigerator Freezer 1 POWER FREEZING 1 1 When Power...

Page 40: ...ected ICE MAKER does not make ice Note When taking out ice with ICE OFF selected only ice lefted in the storing box is extracted 2 FILTER RESET OR LIGHT 2 1 When FILTER INDICATOR LED and LIGHT LED on the front Panel becomes orange or red Filter should be changed 2 2 When FILTER RESET button is pressed for a certain period 3sec after changing Filter FILTER INDICATOR LED and LIGHT LED becomes green ...

Page 41: ...ion of the Eject Motor the counter rotation stops To protect the Gear by releasing its stress a second later after the above directions rotate the Eject Motor clockwise for 2ms When it is not detected that the Motor Voltage Sensor becomes more than 0 55V for a minute after the counter rotation it is considered as an error and initialization gets started again in an hour It stands by for the initia...

Page 42: ...itial water supplying quit the water supply movement If the number of the previous water supply is three times supply water for 3 times and when judged as No Water Supply quit the water supplying movement In this case the Ejection Stand By Time is 70 100 min When judged as No Water Supply in the previous water supply supply water for 5 sec 1 5sec 1sec and 2 sec for 4 times According to conditions ...

Page 43: ...the ice maker sensor is satisfied 3 4 As long as the temp of the temp sensing part maintains below 1 4 F 17 C for more than 5 min the Ejection will be carried out If the temp fluctuates below 1 4 F 17 C above 1 4 F 17 C the Ejection will be carried out after 5 min at the temp below 1 4 F 17 C while counting the Stand by Time entering the temp below 12 2 F 11 C Low water pressure 5s 5s 1 5s 5s 1 5s...

Page 44: ...ion or until the horizontal S W is ON Low after 5 sec from the beginning of the third step when using horizontal S W If the door of the F Room is open stop the clockwise rotation and start the rotation after the door is closed During the temporary pause the clockwise rotation will not be counted 4th step Ice separating step Standby for 2 sec at the maximum twist point It is the movement to twist t...

Page 45: ...n 3 times with the normal function and the ice making stops the ICE TEST shall operate At this point if the normal Ejection and Water Supply are operated by the TEST S W there would be Ding Dong sound for once before the Water Supply and the third ERROR MODE will be cancelled executing the normal ice making 1 Freezer Defrost shall be determined by COMP ON total hour 2 On the initial POWER ON Defro...

Page 46: ...C it is judged as instant power failure while operating and restoring the functions related to PANEL DISPLAY such as Power freezing CHILD LOCK and Freezer Refrigerator settings 3 With initial POWER ON it judges the temp of Freezer and if it is above 41 F 5 C it is judged as extended power failure and PANEL DISPLAY will be initialized Automatic setting at 4 F 20 C for Freezer and 37 4 F 3 C for Ref...

Page 47: ...25 C and Refrigerator will be set at MID 35 6 F 2 C automatically However although forced defrost or test cancellation are selected after a minute while selecting forced operation set temp will not change Maintaining MAX 13 F 25 C and MID 35 6 F 2 C If forced defrost or test cancellation are selected in a minute while selecting forced operation set temp will go back to the previous set temp before...

Page 48: ...he point of HEATER OFF 3 TEST Cancellation MODE 3 1 When converting DISPLAY PANEL into TEST MODE and pressing TEST button one more time during Freeaer Defrost Freezer Defrost will be cancelled and restored to normal operation Also if MAIN POWER is turned on again after being turned off all the TEST functions will be canceled When pressing Freezer KEY and ICE TYPE KEY on the front Display PANEL sim...

Page 49: ...store to normal operation mode Contents of operation in Exhibition Mode DISPLAY FAN MOTOR and DISPENSER will operate normally except for Comp and C FAN 7 13 SELF DIAGNOSIS Press for 8 sec Press for 8 sec RS2511 RS2611 RS2531 RS2631 RS2521 RS2621 RS2511 RS2611 RS2630SW XAA for Best Buy Press for 8 sec Press for 8 sec Press for 8 sec ...

Page 50: ...ring self diagnosis KEY input will not be recognized NO Item DISPLAY LED Trouble Shooting Remark 01 02 03 04 05 06 07 Refrigerator SENSOR Peripheral temp SENSOR Freezer SENSOR Freezer Defrost SENSOR Freezer Defrost ERROR I M Function ERROR I M SENSOR ERROR Refrigerator MID Refrigerator MIN Freezer MAX Freezer MID Freezer MIN ICE OFF Cubed LED Fall out SENSOR HOUSING in Refrigerator contanct failtu...

Page 51: ...load in operation REAL TIME However it is not related to real status of operation of load and it only shows the directed status of the load operation command from MICOM 3 Only corresponding ICON for the load in operation will be ON OFF repeatedly and turned off 4 Load status display will continue for 30 sec and it will restore to the normal state Function How to use By Products 7 14 LOAD STATUS DI...

Page 52: ... MID 3 rd Refrigerator MAX 5 th Freezer MIN 1 st Freezer MID 3 rd Freezer MAX 5 th ICE OFF CUBE LED CRUSH LED LED ON whenDamper is open LED ON when Ambient temp is over 95 F 35 C LED ON when ambient temp is lower than 62 6 F 17 C Relevant LED ON whenCOMP operates LED ON when Freezer Defrost Heater operates Relevant LED ON when Freezer FAN HIGH operates LED ON in Display mode Relevant LED ON when D...

Page 53: ... 1 2 When it is changed to the option mode all of the OPTION CATEGORY I1 I5 and the OPTION SETTING V1 V4 will display 0 ALL OFF The option should be set 0 for shipment but this standard set value could be changed and shipped for quality improvement during mass production The LED arrangements of the OPTION CATEGORY and the OPTION SETTING for different specs are as follows For the Value Spec the Dis...

Page 54: ...ess the Freezer button and the Ice Type button respectively 1 5 The option function will be set in the EEPROM before shipment so do not change the setting except special cases For the option function the setting will be completed when it is reverted to the normal display in 20 seconds So do not turn off the power before it is reverted to the normal display 1 6 Make sure to set the OPTION CATE I1 I...

Page 55: ...tem Option Setting 10 2 7 F 1 5 C Option Cate 1 Refrigerator Standard Temp Value Value V1 V2 V3 V4 Item I1 I2 I3 I4 I5 Item Value Value V1 V2 V3 V4 I1 I2 Item I3 I4 I5 Item RS2630SW XAA for Best Buy RS2531 RS2631 APP EX TO LOWER FREEZER STANDARD TEMP BY 5 4 F 3 C RS2521 RS2621 RS2521 RS2621 Option Setting 6 5 4 F 3 C Option CATE 0 Freezer Standard Temp Value Value V1 V2 V3 V4 I1 I2 Item I3 I4 I5 I...

Page 56: ... V4 I1 I2 Item I3 I4 I5 Item APP EX TO LOWER FREEZER STANDARD TEMP BY 5 4 F 3 C RS2511 RS2611 RS2511 RS2611 Option Setting 6 5 4 F 3 C Option CATE 0 Freezer Standard Temp Value Value V1 V2 V3 V4 I1 I2 Item I3 I4 I5 Item Option Setting 10 2 7 F 1 5 C Option Cate 1 Refrigerator Standard Temp Dispenser LED Dispenser LED ...

Page 57: ... V3 V4 0 1 2 3 4 5 6 7 0 F 0 C 0 9 F 0 5 C 1 8 F 1 0 C 2 7 F 1 5 C 3 6 F 2 0 C 4 5 F 2 5 C 5 4 F 3 0 C 6 3 F 3 5 C 8 9 10 11 12 13 14 15 0 9 F 0 5 C 1 8 F 1 0 C 2 7 F 1 5 C 3 6 F 2 0 C 4 5 F 2 5 C 5 4 F 3 0 C 6 3 F 3 5 C 7 2 F 4 0 C SET VALUE Option Value COMMON VALUE V1 V2 V3 V4 Freezer TEMP SHIFT AD PJT SET ITEM MODEL SET VALUE Option Value COMMON DISPLAY Option Item VALUE I1 I2 I3 I4 I5 1 VALUE...

Page 58: ...erring to the followings Is Power of primery DC TRANS applied Start NO Change DC TRANS Is Power of secondary DC TRANS applied NO PCB REG101 Change PCB Change Is 12V terminal normal NO Change PCB REG102 Change PCB Is 5V terminal normal NO Do repairing Are wire connections of PANEL PCB normal NO Change PANEL PCB Is PANEL PCB normal NO YES YES YES YES YES YES Change MAIN PCB ASS Y Pre Check ...

Page 59: ...of Ambient Sensor of MAIN PCB Connector CN31 normal NO YES Checksolderingfault short LeadTouch Is MICOM Pin 54 input voltage normal NO 0 5V Measuredvalue 0 5V Measured value 4 5V YES Check Main Panel PCB again Change ChangeTempSensor Is Refrigerator Temp Sensor normal Start NO YES Connectorcontacttrouble re insertion Is the insertion of MAIN PCB connector CN30 normal NO YES ShortbetweenconnectorSe...

Page 60: ...deringfault short LeadTouch Is MICOM Pin 57 input voltage normal NO YES Change MAIN PCB ChangeDefrostSensor Is Defrost Sensor normal Start NO YES Connectorcontacttrouble re insertion Is MAIN PCB CN30 insertion normal NO YES ShortbetweenconnectorSensors Is the connection wire between MAIN PCB connector CN30 and Defrost Sensor blue normal NO YES Checksolderingfault short LeadTouch Is MICOM Pin 58 in...

Page 61: ...N PCB picks up theTemp as a desired level Is Forced Operation on Start NO Soldering checkout Change MICOM or PCB Is the MICOM 29 output HIGH 5V NO Change or repair IC3 Change PCB Is the IC3 15 LOW NO Change or repair RELAY Change PCB Is COMP RELAY normal NO Insert Connector completely Check its connection Is contact of CONNECTOR CN71 13contact normal NO Change repair COMP Does COMP ASS Y Function ...

Page 62: ...condition 1 When Freezer FAN F FAN does not operate StartForcedOperation Is it during Forced Operation Start NO YES NormalF FAN Does Fan operate with DOOR S W presses YES YES ChangeDOORS W Is DOOR S W normal NO YES Checksoldering ChangePCB Is voltage of MICOM 49 normal NO YES Re insertConnectorCN71 Is insertion of CN71 W BLUE of MAIN PCB normal NO YES Checksoldering ChangePCB Is voltage of MICOM P...

Page 63: ...S DAMPERisnormal Does DAMPER operates with DOOR S W pressed YES NO ChangeDOORS W Is DOOR S W normal NO YES Checksoldering ChangePCB Is voltage of MICOM 50 normal NO YES CheckConnectorCN75 again Is insertion of CN75 of MAIN PCB normal NO YES Checksoldering ChangePCB Are voltage of MICOM Pin 44 45 46 outputed NO YES ChangeDAMPER Is DAMPER normal NO YES Check wire assembly and connections between Dam...

Page 64: ...nge PCB Is RELAY RY77 normal NO Check contact of Connector CN71 again Is contact of Connector CN71 ORANGE normal NO YES YES YES YES YES YES Check wire assembled status of FAN MOTOR 3 When Comp Cooling Fan does not operate Comp Fan DELAY Higher than 64 4 F 18 C Comp Fan operates immediately upon COMP ON Lower than 53 6 F 12 C Comp Fan gets off regardless of COMP Ambient Temp Range Load Operation St...

Page 65: ...inated and COMP will remain off following the Temp FUSE short off The fault can be picked up with self diagnosis POWER ON OFF MaintainForcedOperationfora certaintime Dose Defrost work upon Forced Defrost KEY pushed Is concerned Defrost Sensor Temp higher than 12 C Start NO NO YES YES Is power supplied to Defrost Heater YES NO Checksoldering ChangePCB Is MICOM 30 HIGH 5V NO YES CheckIC3 ChangePCB I...

Page 66: ...ppendix TABLE Normal Does the Function return to the normal after Heating YES NO ChangeconcernedSensor Is each concerned Defrost Sensor Temp higher than the terminated Temp Is the input voltage of MICOM 9 higher than the voltage upon the terminated Temp NO YES YES ChangeTemppick uppart ChangePCB NO Change PCB A ...

Page 67: ...In this case even though Door gets opened Room Lamp does not comes ON 1 When Ding Dong sound continues Start Chhange PCB Check ON OFF again Note ContacttroubleofConnector Insertitagain Is insertion of MAIN PCB Connector CN30 normal YES NO RepairDOORS W pressingpart Does DOOR S W come in out well YES NO CheckwireofDOORSWITCH Is voltage of MICOM 49 50 according DOOR SWITCH ON OFF YES NO 2 When Beep ...

Page 68: ...l NO YES Re insertPANELPCBConnector Checkcontacts Is inssertion of PANEL PCB Connector normal NO YES Re assemblePANELPCBCOVER Is there any pressed KEY NO YES Change PANEL PCB 4 When PANEL PCB KEY is not selected 3 When PANEL PCB doesn t light up CheckREG101parts ChangePCB Is MAIN PCB 12V normal REG101 Start NO YES Re insertConnector Checkcontacts Is Connector of Upper Hinge Cover inserted well NO ...

Page 69: ...m Lamp is basically controled with Door Switch PCB does not control it 1 When Freezer Refrigerator Lamps do not light up Start Check wires again Note DOOROPEN Is DOOR OPEN YES NO ChangeDOORSWITCH Is DOOR SWITCH normal YES NO ChangeLAMP Is Room LAMP R F normal YES NO ...

Page 70: ...4 have right voltage output YES NO Connectorcheck repair Does panel PCB CN2 connector connected well YES NO Connectorcheck MainPCB change MainPCBCN50and PanelPCBCN1connectioncheck Does Panel PCB F room R room temperature display work well YES NO CHECK METHOD Separate the switch and check the resistance with teste When S W is selected or stands by 0 Ω or Ω is pick up 1 Only 0 Ω is pick up S W SHORT...

Page 71: ...onnector contact defect 3 Check Connection Hose defect Pre Check Normal checkthe watervalvehose Is valve operation confirmation sound heard when Water S W pushed NO YES Solderingshort check PCBchange Does Main PCB MICOM 21 have high 5V output YES NO Solderingshort check PCBchange Does Main PCB MICOM 11 have low 0V output YES NO Solderingshort check PCBchange Is the contact point of main PCB RELAY ...

Page 72: ...ctor NO NO NO Crush Does Cube Ice come out upon extracting Normal operation YES NO Is PANEL PCB Cube selected Select Cube NO Is it in Cube MOTOR Cube Check WIRE Check MOTOR NO Is DISPENSER ICE S W selected Select DISPENSER ICE S W NO Is Input Vac outputted at MAIN PCB CN70 CN71 Check WIRE Faulty MAIN PCB Change YES YES YES NO YES YES YES YES CUBE MAIN PCB Normal Check other parts Check wires betwe...

Page 73: ...6811 FAX 82 62 950 6829 Samsung Electronics Co Ltd Refrigerator Division 2004 7 Printed in Korea Code DA68 01369A This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law ...

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