Samsung RS257BABB Service Guide
Samsung RS257BABB Manual
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- Samsung RS257BABB | Service Guide - Page 1
SAMSUNG Home Appliance Service For the latest information, Please access to our service web site (www.samsungasc.com) SIDE-BY-SIDE REFRIGERATOR Model: RS253BAWW RS253BAVQ RS253BABB RS253BASB RS255BAWW RS255BASB RS255BABB RS257BAWW RS257BASB RS257BABB RS257BARB SAM0092 - Samsung RS257BABB | Service Guide - Page 2
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 - Samsung RS257BABB | Service Guide - Page 3
Disassembly 13 9. Operation Function 23 10. Circuit Descriptions 37 11. Diagnostics 46 12. Reference for circuit diagnostics 56 13. Illustrated Parts Catalog 60 14. Safety instruction on services 65 ● Appendix Ⅰ(Circuit diagram 76 3 - Samsung RS257BABB | Service Guide - Page 4
1. INTRODUCTION ● A newly developed SAMSUNG side by side refrigerator in 2005 has the following characteristics. 1) Twin Cooling System ∙The refrigerator and the freezer have two evaporators. Given this independent system, - Samsung RS257BABB | Service Guide - Page 5
2. INSTALLATION 1) To protect refrigerator in movement Use less tphaadnd3e9d〃h,arnedmtoruvcekdaosorsshporwionr. If entrance width is to installation and reattach doors according to procedure below. 2) Remove all protective tape and pad in refrigerators. Connect water lines and power cord. - Samsung RS257BABB | Service Guide - Page 6
3. Nomenclature R S 25 3 B A SB / XAA Buyer Code COLOR ; SBS SB-STAINLESS PLATINUM WW-SNOW WHITE VQ-BISQUE GLOSSY BB-BLACK RB-REAL STAINLESS A ; A-TOP PJT BUYER ; BEST BUY OPTION ; SBS 3-GOOD 5-BETTER 7-BEST Capacity ; CU. FT Family ; S - SIDE BY SIDE (SBS) H - HomePADTM (SIDE BY SIDE) Product ; R - - Samsung RS257BABB | Service Guide - Page 7
4. Specifications ELECTRICAL SPECIFICATIONS Defrost Control From 24 to 32 hrs Defrost Thermistor(502AT) 50℉(off) Electrical Rating AC115V 60Hz 11.6 Amps Maximum Current Leakage 0.25 mA Maximum Ground Path Resistance 0.1 Ohm Energy Consumption KWH/mo. Freezer Refrigerator NO LOAD - Samsung RS257BABB | Service Guide - Page 8
not supplied and authorized by SAMSUNG, or which damage this product or result in service problems; incorrect electrical line voltage, fluctuations and surges; customer adjustments and failure to follow operating instructions, cleaning, maintenance and environmental instructions that are covered and - Samsung RS257BABB | Service Guide - Page 9
6. Interior Views and Dimensions 6-1) Shelves and Bins Freezer Xtra SpaceTM Door Bin Ice Maker Light Ice Chute Wire Shelf Light Switch Tilt Pockets Wire Drawers RS253BA Model Front Leg Cover Refrigerator Water Filter Light (upper) Light Switch Spill-proof glass Shelf Deodorizer Egg Container - Samsung RS257BABB | Service Guide - Page 10
Interior Views and Dimensions 6-2) Dimensions of Refrigerator(RS253BA/255BA/257BA) (Inches) 10 - Samsung RS257BABB | Service Guide - Page 11
7. Refrigeration Cycle and Cool Air Circulation Route 7-1) Refrigerant Route in Refrigeration cycle Compressor → Sub-condenser → Side Cluster Pipe(FRE) → Side Cluster Pipe(REF) → Hot Pipe → Dryer → Capillary Tube → Refrigerator Evaporator → Freezer Evaporator→ Suction Pipe → Compressor Refrigerator - Samsung RS257BABB | Service Guide - Page 12
Refrigeration Cycle and Cool Air Circulation Route 7-2) Cool Air Circulation Freezer Refrigerator 12 - Samsung RS257BABB | Service Guide - Page 13
8. Mechanical Disassembly 8-1) Refrigerator Disassembly Control Panel 14 Door Handle 14 Door Gasket 14 Refrigerator Door Light Switch 15 Refrigerator Light 15 Tempered Glass Shelf 15 Plastic Drawers in Refrigerator 15 Gallon Door Bin 15 Water Filter 16 Evaporator Cover in the Refrigerator - Samsung RS257BABB | Service Guide - Page 14
8. Mechanical Disassembly 8-1) Refrigerator Disassembly Control Panel 1. Insert a flat-blade screwdriver on the slot as shown, and unlock the tabs. 2. Disconnect the wire connector. Door Gasket The door gasket is a molded gasket set into a channel located in the door liner. 1. Open the door. 2. - Samsung RS257BABB | Service Guide - Page 15
Mechanical Disassembly Refrigerator Light The refrigerator lights are located in the upper and lower portion of refrigerator. 1. Pull out the screw cap and remove the screw. 2. To access the lower lights, pull out the screw cap and remove the screw. 3. Remove the lamp cover by unlocking the tabs - Samsung RS257BABB | Service Guide - Page 16
Mechanical Disassembly Water Filter The water filter is located in the upper right-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 - Samsung RS257BABB | Service Guide - Page 17
Mechanical Disassembly Evaporator in Refrigerator Evaporator is located in the bottom of refrigerator. 1. Take off the ductwork in refrigerator. 2. Disconnect the wire connector.(Heater and Thermistor) 3. Desolder the capillary tube and the suction line from the evaporator. 4. Remove the evaporator - Samsung RS257BABB | Service Guide - Page 18
Mechanical Disassembly 8-2) Freezer Disassembly Door Bin in Freezer The door bins allow storage of perishable items. 1. Push the bin up and slide it out. Freezer Door Light Switch This switch is located in the left-hand portion of the freezer and sends a signal to the processor. 1. With a small - Samsung RS257BABB | Service Guide - Page 19
and slide out. 2. Disconnect the ice maker wire connector. 3. Unlock the locking tabs to separate the ice maker kit. SUPPORT OF ICE-MAKER LOCKING TAB WIRE CONNECTOR 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 - Samsung RS257BABB | Service Guide - Page 20
Mechanical Disassembly Freezer Light The freezer light is located in the bottom of the auger motor case. The light is covered by an opaque cover. 1. Remove the screw and the light cover. Upper Ductwork 1. Remove the screw cap and screw. 2. Slide the upper fan ductwork out while disconnecting the - Samsung RS257BABB | Service Guide - Page 21
Mechanical Disassembly Evaporator in Freezer Evaporator is located in the bottom of freezer to produce cold air driven across the evaporator coils. 1. Take off the ductwork in Freezer. 2. Disconnect the wire connector (Heater, Bimental, and Thermistor). 3. Desolder the inlet and outlet tubes. 4. - Samsung RS257BABB | Service Guide - Page 22
Mechanical Disassembly 8-3) Machine Compartment Disassembly Machine Compartment ＆ Electric Box 1. Disconnect the power cord of the refrigerator. 2. Remove the fixed screws (6) of compressor cover. 3. Disconnect water tubes (3). 3. Slide up and take off the compressor cover to see the machine - Samsung RS257BABB | Service Guide - Page 23
9. Operation Function 9-1) Digital Panel 24 9-2) Temperature Control Function 24 9-3) Power Freeze and Power Cool Functions 25 9-4) Child Lock Function 25 9-5) Ice ＆ Water Dispenser Function 26 9-6) C-Fan Motor Delay Function of the Machine Compartment 26 9-7) CoolSelect ZoneTM Function( - Samsung RS257BABB | Service Guide - Page 24
9. Operation Function 9-1) Digital Panel for RS253BA for RS255BA RS257BA 9-2) Temperature Control Function When the system power is initally engaged, the default set temperature are -4℉ for the freezer and 38℉ for the set refrigerator, respectively. The numbers shown on the digital display panel - Samsung RS257BABB | Service Guide - Page 25
Operation Function 9-3) Power Freeze and Power Cool Functions q Select the Power Freeze or Power Cool buttons separately. q These buttons are toggled ON and OFF and the indicators as well. q Although you select Power Freeze or Power Cool, the set temperatures in the freezer and refrigerator are not - Samsung RS257BABB | Service Guide - Page 26
Operation Function 9-5) Ice & Water Dispenser Function q Among several ice-maker functions, the ice extraction function is performed by mechanical system. Only the relay control for a cubed-ice dispensing and the SSR control for the ice chute door are performed electronically. 1) Select Cubed/ - Samsung RS257BABB | Service Guide - Page 27
the ice chute. 1) Ice-maker parts EJECT-MOTOR ICE-WAKER, KIT SUPT-RUBBER TRAY-ICE LEVELING-SWITCH ICE Full-SWITCH TEST-SWITCH SCREW KNOB-TOUCH GUIDE-ICE(Lever to check ice full) 27 - Samsung RS257BABB | Service Guide - Page 28
connect a water supply line in the owner's manual.) 2-2) Push the bucket back fully so that the guide-ice of ice maker should not touch the back throw away 2-3 times of these ice to make sure the supplied water clean. SUPPORT OF ICE-MAKER LOCKING TAB WIRE CONNECTOR ICE-MAKER KIT Push the bucket back - Samsung RS257BABB | Service Guide - Page 29
Operation Function 5) Ice off function 5-1) When the Ice off operation is selected by Ice Type button, the ice making process will cease. 5-2) When the ice making process ceases, the final state will be the ice tray with supplied water. 5-3) When Cubed or Crushed operation is selected again, the - Samsung RS257BABB | Service Guide - Page 30
Operation Function 9-11) Forced Operation Function (Pull-down / Refrigerator Defrost / Refrigerator . Freezer-Defrost / Cancellation) q This function enables a pull-down mode, a defrost mode for the refrigerator only, a defrost mode for the freezer and the refrigerator at the same time, and a - Samsung RS257BABB | Service Guide - Page 31
Operation Function 9-12) Sound Function 1) Sound function 1-1) To make sure a command input, whenever a button is pressed, a "ding-dong" sounds. 1-2) When two or more buttons are pressed simultaneously or if a wrong button is pressed, there is no sound. 2) Door Open Alarm 2-1) When the doors remain - Samsung RS257BABB | Service Guide - Page 32
of 70 minutes. Error is - displayed PLC Related Wire Cut, Defective PLC Module, Defective Communication Components in Main PCB Display error when there is communication problem in PLC models. 32 - Samsung RS257BABB | Service Guide - Page 33
Operation Function 9-15) Load Operation Check Function 1) In the normal operation, press Power Freeze and Power Cool buttons simultaneously for 6 second, then the display panel will blink for 2 seconds. 2) Press Fridge Temp. button ⓐ to get into this check mode with an audible tone. 3) Each - Samsung RS257BABB | Service Guide - Page 34
Operation Function 1) Initially, all products set the code, "0" 2) After 20 seconds from adjustment, a new setting will be stored in EEPROM and return to the normal display. 3) Freezer Temp, Fridge Temp., Ice maker water supply, Ice tray temperature, and CoolSelect ZoneTM temperature can be - Samsung RS257BABB | Service Guide - Page 35
Operation Function Example) If you are lowering the current temperature of the freezer by －6.0℉ 2) Shift the refrigerator temperature sensor Reference Value 1 Code Temp. shift 0 0 1 －1.0℉ 2 －2.0℉ 3 －3.0℉ 4 －4.0℉ 5 －5.0℉ 6 －6.0℉ 7 －7.0℉ Code Temp. shift 8 1.0℉ 9 2.0℉ 10 - Samsung RS257BABB | Service Guide - Page 36
Operation Function ■The following options is limited to a model with the Ice Maker. 4) Shift the Ice maker temperature sensor 5) Shift the CoolSelect ZoneTM temperature sensor. Reference Value 4 Code 0 1 2 3 4 5 6 7 Ice maker temperature sensor 1.5℉ 3.2℉ 5℉ 6.8℉ 8.6℉ 10.5℉ -0.5℉ -2.2℉ - Samsung RS257BABB | Service Guide - Page 37
10. Circuit Descriptions 10-1) Source Power Circuit 38 10-2) Oscillator Circuit 38 10-3) Reset Circuit 38 10-4) Door S/W Sensing Circuit 39 10-5) Temperature Sensing Circuit 39 10-6) Key Scan and Display Circuit 40 10-7) CoolSelect ZoneTM Panel Circuit 42 10-8) Fan Motor(BLDC) Drive Circuit - Samsung RS257BABB | Service Guide - Page 38
Circuit Descriptions 10-1) Source Power Circuit This circuit shows SMPS(Switch Mode Power Supply) which converts AC input voltage (115V, 60Hz) to a high DC voltage (170V). The input AC source power is converted to DC through a wave rectifier (BD1) and the converted DC power will generate a constant - Samsung RS257BABB | Service Guide - Page 39
Circuit Descriptions 10-4) Door S/W Sensing Circuit Terminal Operation Volt(state) DOOR CLOSE 0V (LOW) Freezer DOOR OPEN 5V (HIGH) DOOR CLOSE 0V (LOW) Ref. DOOR OPEN 5V (HIGH) 1) The terminals, ② and ⑥ of the connector (CN30) are grounded, and DC5V (Vcc) is supplied to the terminals, ⑤ and ⑥ through - Samsung RS257BABB | Service Guide - Page 40
)from Main PCB and displays it. At this time, it blinks at an interval of 0.5 sec On and 0.5 sec Off if there is communication problem between Main PCB and Panel PCB. The blinking continues until they communicate each other normally. And, when they communicate each other normally, it stops blinking - Samsung RS257BABB | Service Guide - Page 41
Circuit Descriptions 10-7) CoolSelect ZoneTM Panel Circuit 1) CoolSelect ZoneTM display panel and temperature sensor 1-1) CoolSelect ZoneTM is referred to as a storage drawer to implement features of Quick cool, Thaw, and Select (Soft Freeze, Chill, and Cool). 1-2) CoolSelect ZoneTM has an - Samsung RS257BABB | Service Guide - Page 42
Circuit Descriptions 2-1) CoolSelect ZoneTM Drawer is controlled by a damper to supply or block cold air. For Quick Cool, the damper will be close. So cold air is supplied only to CoolSelect ZoneTM Drawer. For Thaw, the evaporator heater of refrigerator is ON and the damper is controlled by the - Samsung RS257BABB | Service Guide - Page 43
Circuit Descriptions 1-3) When the motor rpm is in 600�700, it will stop automatically and it tries to resume after 10 seconds. If the motor is not working properly after 5 time trials, it will rest for 10 minutes, then try to resume again. This process will be done continuously. Note) If there is - Samsung RS257BABB | Service Guide - Page 44
Circuit Descriptions 4) The principles of other loads is the same as 3) item described. Note) SSR(Solid State Relay) is a kind of Relay. *COMP. equivalence circuit of drive section 44 - Samsung RS257BABB | Service Guide - Page 45
the main PCB, please apply descriptions of operation and references in the manual. Start - Check the connections of main PCB. - Check the assembly. Replace REG1(KA7805) 1) Check the assembly of electric wires and troubleshoot. 2) Replace the panel PCB. 1) Replace the corresponding relay. 2) - Samsung RS257BABB | Service Guide - Page 46
of connector CN70 normal? Is the temp. sense of main PCB Normal? YES Open and troubleshoot the connection. Exchange or troubleshoot COMP relay. NO Open and repair the connection. NO Troubleshoot the sensor and Exchange PCB. YES Is COMP assembly normal? YES Normal Insert connector completely - Samsung RS257BABB | Service Guide - Page 47
. of the defrosting NO sensor below 5? YES Exchange and troubleshoot the corresponding sensor. Check temp. fuse, breaking of heater wire, contact of wire and so on. Run forced operation for a specified period. � See test function in the manual. NO � Recheck the corresponding sensor for an error - Samsung RS257BABB | Service Guide - Page 48
of circuit operation, and how to check temperature sensor in the manual.) � For sensor resistance per temperature, make use of the resistance YES No trouble with PCB and temperature sensor. Recheck the connector for an error of contact. Exchange the temperature sensor. Troubleshoot a bad - Samsung RS257BABB | Service Guide - Page 49
? Remove causes after comprehending the conditions of interference by door gasket, food etc. Exchange the door S/W. Troubleshoot the breaking of wire and bad door S/W. Connector not inserted. Troubleshoot poor contact. YES Main PCB and door S/W are normal. Exchange the door S/W. 2) If "Ding-Dong - Samsung RS257BABB | Service Guide - Page 50
Diagnostics 3) Without sound of buzzer operation This model is equipped with a buzzer in Panel PCB. When there is no buzzer sound with button input, forced operation or door open, disassemble Panel PCB and check if the buzzer is broken or soldering is defective. It is difficult to repair Panel PCB - Samsung RS257BABB | Service Guide - Page 51
of LCD does not light up Start � Refer to Circuit Diagram in this manual or on the back of the product. � When the Panel button does Short/Open Check 2) When the Panel PCB button does not work - When the problem is not corrected with the above checking methods Defective Panel PCB Is Lock lamp on - Samsung RS257BABB | Service Guide - Page 52
0V? YES Execute Forced operation. (See page 34 in the manual) Fan works normally. Troubleshoot the connections of door S/W. For C-FAN Measure with the door closed has failure for itself. 2. Check if the wire connections have a trouble of contact. 3. Check the input of the fan motor rotation - Samsung RS257BABB | Service Guide - Page 53
; the state of wire assembly between the panel and main PCB. Panel PCB has trouble for itself. 2) Where the Panel PCB key isn't selected: - The basic method is applied to check - if you fail in troubleshooting after above the execution, then NO Aren't a key or more pressed continuously? YES Isn - Samsung RS257BABB | Service Guide - Page 54
trouble. NO NO Does the F-door S/W have a normal contact? YES Check the connections of F and R-door S/W; check and troubleshoot the inside lamp socket. Exchange or troubleshoot the inside lamp. Exchange or troubleshoot "Ding-Dong" sound per a one-minute cycle. Please note step for its service! 54 - Samsung RS257BABB | Service Guide - Page 55
Diagnostics 11-11) If Crushed Ice/Cubed Ice doesn't work properly: Start Is ice ejected? YES The condition of close on operation is subject to the freezer door. NO NO Does ice in the ice tray exist ? YES 1) Check the ice-ejector S/W. 2) Check the door S/W. 3) Check the ice moving motor. 4) Check - Samsung RS257BABB | Service Guide - Page 56
12. Reference for circuit diagnostics 12-1) Wire connector on the cabinet door. 12- 2) How to check relay failure Note) NC -> Normally Close (C terminal and ON terminal) NO -> Normally Open (C terminal and Open terminal) C -> Common Terminal Disconnect the connector of the main PCB CN70 and CN71, - Samsung RS257BABB | Service Guide - Page 57
measure the resistance between terminals, check load trouble and wire connection error. 2. The diagram of circuit was drawn based on the maximum load. When a repair is needed, see the electric wiring diagram on the back of refrigerator to troubleshoot the corresponding model. 3. For safety, you must - Samsung RS257BABB | Service Guide - Page 58
to the temperature of each sensor with the conversion table of sensor resistance and voltage from the reference temperature of Ref. 6 on this manual. ※When the resistance is ∞Ϊor 0Ϊ,check the connection of electric wire and sensorconnector. 12-5) Check Door S/W Check the condition in power on. Door - Samsung RS257BABB | Service Guide - Page 59
Reference for circuit diagnostics 12-6) Table of temperature sensor according to resistance and voltage conversion. The input voltage to the MICOM PORT could be different by a hardware. This is a table based on the voltage using the 10kohm-F. MICOM PORT voltage when the sensor is open: about DC 5V( - Samsung RS257BABB | Service Guide - Page 60
13 . Illustrated Parts Catalog. 13-1) Freezer RF023 RI079 RI079 RF022 RW215 RF022 RM016 RF004 RW554 RW073 RF023 RF012 6-19 RW072 RM012 RW710 RF034 RW919 RM018 RF049 RF039 RF047 RF035 RD088 RF022 RF022 RH020 RM010 RM001 RI011 RM011 RW433 RM017 RI021 RF034 RI080 RW735 RI081 - Samsung RS257BABB | Service Guide - Page 61
Illustrated Parts Catalog. 13-2) Refrigerator RI054 RI007 RI002 RI041 RI019 RS092 RI107 RI080 RI041 RI081 RO086 RI078 RI039 RI003 RI005 RI005 RW829 RI113 RI005 RI098 RI010 RI018 RI028 RW650 RW650 RI106 RI033 RI034 RI029 RI080 RI008 RI037 RI085 RI086 RW716 RI087 RI089 RF028 RF036 - Samsung RS257BABB | Service Guide - Page 62
Illustrated Parts Catalog. 13-3) Cabinet RF025 RF042 RO044 RO041 RO041 RS082 RW555 RO037 RO037 RO075 RM020 RF018 RF043 RO009 RO005 RO048 RO007 RO050 RO004 RO004 RH001 RO042 RO045 RW664 RO042 RO067 RW904 RH003 RW003 RH023 RF037 RO101 RI087 RW747 RW074 RH002 RH014 RH005 RH004 RH016 - Samsung RS257BABB | Service Guide - Page 63
Illustrated Parts Catalog. 13-4) Disassembly of Freeze Door RD055 RD05 3 RD05 2 R O 05 2 RD0 32 RD0 26 RD0 65 RO 017 R O 05 8 RO 021 RO 010 R O1 06 R O1 03 R W 55 9 RD050 RD0 19 R O 05 1 RD0 49 RD0 19 RD0 22 RD0 23 RD05 1 RD00 1 RD0 44 RD0 12 RD0 17 R W 395 R O 032 RD05 4 R O1 - Samsung RS257BABB | Service Guide - Page 64
Illustrated Parts Catalog. 13-5) Disassembly of Refrigerator Door RE0 34 RE02 5 RE028 RE02 5 RE02 5 RE02 1 RE02 1 RE0 16 RE00 1 RO 010 RO 106 RO 017 R O 02 1 RO 058 RO 101 R D 054 RO 032 R W 395 R O 02 4 RO 060 RO 017 RE0 43 RO 105 R O 102 R D 054 RO 032 R W 395 R O 02 1 RO - Samsung RS257BABB | Service Guide - Page 65
14. Safety Instructions on Service ●Unplug the refrigerator before making any repair or any replacement. � Avoid the electric shock. ●Use the rated components on the replacement. � Check the correct model - Samsung RS257BABB | Service Guide - Page 66
506-253 TEL : 82-62-950-6193, 6896 FAX : 82-62-950-6829 - This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International or domestic law. © Samsung Electronics Co., Ltd. Refrigerator Division 2005. 02 Printed in Korea
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RS253BAWW
RS253BAVQ
RS253BABB
RS253BASB
RS255BAWW
RS255BASB
RS255BABB
RS257BAWW
RS257BASB
RS257BABB
RS257BARB
Model:
SIDE-BY-SIDE REFRIGERATOR
SAMSUNG Home Appliance Service
For the latest information,
Please access to our service web site
(www.samsungasc.com)