Samsung SR-L677EV Service Manual
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Samsung SR-L677EV Service Manual

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GREEN
REFRIGERATOR
REFRIGERATOR
Model : SR-L677EV
9. Disassembly & Assembly
SR-L677EV
SR-L679EV
11. PCB Parts List
SR-L627EV
SR-L629EV
SR-L679EV
SR-L627EV
SR-L629EV
CONTENTS
3. Electrical Part Specifications & Standard
5. Functions & Operating Instruction

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Summary of Contents for Samsung SR-L677EV

  • Page 1 REFRIGERATOR Model : SR-L677EV SR-L679EV SR-L627EV SR-L629EV GREEN REFRIGERATOR CONTENTS 1. Precautions 2. Product Specifications 3. Electrical Part Specifications & Standard 4. Circuit Diagram 5. Functions & Operating Instruction 6. Circuit Descriptions 7. Trouble shooting 8. Exploed View 9. Disassembly & Assembly 10.

  • Page 2: Precautions

    1. Precautions Warning : Please abide by the following Cleaning : After completing repairs, clean precautions in order to conduct the surrounding area and the the maintenance procedures in a refrigerator and tell the consumer safety fashion. about the repairs being made. This appliance contains a small amount of the 1-1.

  • Page 3: Product Specifications

    Door insulation A.B.S Cabinet Liner A.B.S Door Net weight 103Kg 108Kg 102Kg 107Kg 3. Electrical part specifications & standard ITEM STANDARD Model SR-L629EV, SR-L679EV, SR-L627EV, SR-L677EV Rated Voltage 230-240V 230-240V 220V 127V 115V Frequency 50HZ 50HZ 50-60HZ 60HZ 60HZ DK172C-L2U DK172P-L2U...
  • Page 4 ITEM STANDARD Type Temperature Selection ON(˚C) OFF(˚C) –25˚C –23.5˚C –26.5˚C Freezer F-Sensor –19˚C –17.5˚C –20.5˚C –14˚C –12.5˚C –15.5˚C Type Temperature Selection ON(˚C) OFF(˚C) 1˚C 2.5˚C –0.5˚C Refrigerator F-Sensor 4˚C 5.5˚C 2.5˚C 7˚C 8.5˚C 5.5˚C First Defrost Cycle 4hr ± 10min (Concurrent Defrost of F and R) Defrosting 6 - 22hr(Vary according to the conditions used)

  • Page 5: Circuit Diagram

    4. Circuit Diagram 4-1. 230V-240V/50Hz, 220v/50Hz,60Hz, 127V/60Hz, 115V/60Hz...
  • Page 6 4-2. 230V-240V/50Hz, 60Hz, 220V/50Hz,60Hz, 127V/60Hz, 50Hz, 115V/50V,60Hz(INVERTER PCB) MAIN PCB CN10 CN30 DC TRANS F-ROOM SENSOR THERMAL FUSE R-ROOM SENSOR DEFROST SENSOR.F DEFROST SENSOR.R CN70 COMPRESSOR S/BLU RUNNING CAPACITOR F-DOOR S/W O.L.P BLU-BLUE DEFROST HEATER.F F-THERMAL FUSE BRN-BROWN F-DRAIN HEATER R-DOOR S/W S/BLU E-EARTH...

  • Page 7: Functions & Operating Instruction

    5. Function & Operating Instruction 5-1. Product Dimension "X" "Y" Remarks MODEL SR-L679EV 1790 1013.5 1508 "X" 1790 SR-L677EV 1013.5 1508 "Y" SR-L629EV 1790 1013.5 1458 "X" SR-L627EV 1013.5 1458 1790 "Y"...
  • Page 8 5-2. Part Name & Disassembly • Top tray disassembly Take out food stuffs and Pull it forward. pull it out by following the arrow. • Take out the water bottle • with the bottom lever pressed. • • • Tray disassembly •...
  • Page 9 5-3. Circulation of Refrigerant (H.M CYCLE) Compressor → Sub condenser → Cluster pipe → Hot pipe → Dryer → Capillary tube → R-Evaporator → F-Evaporator → Accumulator → Suction pipe → Compressor...
  • Page 10 5-4. Cool Air Circulation...

  • Page 11: Temperature Control/Capacity Explanation

    5-5. Temperature Control and Other Capacity Explanation 1. Display design 2. Temperature control function 1) Temperature selection of freezer compartment After the initial key selection, it displays the notch which is presently set up, then within 5 seconds re-memorize the key after 1-2) points mentioned below. If there is no input of the key, it moves back to the previous temperature display.
  • Page 12 3) Quick freeze 3-1) Press the on/off buttons of Quick Freeze so that the lamp of Quick Freeze is light up and off and then it operates it’s function automatically. 3-2) It does not indicate from initial Power on. Initial Power On Pressed once time Pressed second time Remark...
  • Page 13 5) Sabbath function 5-1) It will turn to sabbath function if you press freezer and refrigerator temperatune button together for 5 seconds. 5-2) When turned to sabbath function, all of the front display of LED turn off. 5-3) The light will not switch on even when the door is opened, and if it was switched on then it will switch off.
  • Page 14 5. Test function Test function is for the test of PCB, product, official inspection and ability of SVC. When s/w test is chosen and tested the product, you switch off and on again then let it run a self-test. 1) Function of forced running. 1-1) If you choose PCB button once, COMP will automatically start.
  • Page 15 Exhibition mode 1. When you press quick freeze button and freezer temp. button together the operation changes into exhibition mode. 2. In exhibition mode, compressor is immediately off and defrost do not activate. 3. If you press quick freeze button and freezer temp. button together for 5 sec exhibition mode cancel out and bact to nomal operation.
  • Page 16 Table 1. Display table of self diagnosis. Item Display LED Symptom Remark ˚C • Open faulty •Suspected to be below -50 R-sensor Refrigerator • Short faulty ˚C •Suspected to be over +50 R-area ˚C • Open faulty •Suspected to be below -50 Refrigerator defroster •...
  • Page 17 2) At this moment if you take off quick freeze and quick cool button and press refrigerator temp. button (ding-dong sound), it change into the display of the presently operating parts. 3) This display condition is unrelated to actual operation and it is an reference of indication that MICOM commanded operating order).
  • Page 18 3) Door open when door is open, the related display shows an actual temperature. 3-1) Display range of freezer is -35 ~ 30 and refrigerator is -9 ˚C ˚C ˚C ˚C 3-2) If freezer inner temperature is above 0 for 10 minute, the display of the selected temp. ˚C will blink.

  • Page 19: Circuit Descriptions

    6. Circuit Descriptions 6-1. Power circuit Voltage Circuit used Relay Operation & LED Display (DC 12V) Power around MICOM & Sensor Detector Vcc (DC 5V) 1) The input AC voltage of DC-trans secondary registers 8V at CN10 between ①~③. The rectified voltage passed through D101 ~ 104 becomes DC 5V through voltage regulator MC7805(REG1).
  • Page 20 6-2. Oscillator It is designed for clock generation and time calculation for synchronizing transmission and reception on the logic elements inside the MICOM. If the X-TAL specification changes, MICOM may make an error. (The standard components should be used.) Oscillating Frequency Port 4.00MHz Xin(#19)

  • Page 21: Temperature Sensor

    MICOM Door Conditions Door S/W Contact Micom Input Voltage DOOR PIN NO CLOSE OPEN “HIGH” # 39 OPEN CLOSE “LOW” CLOSE OPEN “HIGH” # 40 OPEN CLOSE “LOW” 1) If door is open, door S/W contact is closed. Then MICOM receives “low” signal and detects door open then, Relay control circuit receives “HIGH”...
  • Page 22 6-6. Button scan and display circuitry At that time, the peak to peak voltage of square signal registers around 12V. The grid #1 ~#5 waveforms are as follows.
  • Page 23 6-7. Load Operation If MICOM outputs “high” signal to driver-IC(KID65003AP/S1P2655AØ3) according to each load operation conditions, IC turns on and DC 12V flows to ground through the relevant relay coil. Then, core is magnetized by the coil current, and relay contact switches on. When relay contact is on, AC POWER is supplied to the relevant operation load, then which will be activated.

  • Page 24: Option Table

    6-8. Other option functions Temperature and function values are changeable by using main PCB switching diode. : If possible, do not change because the values have been set in factory. When changing option • Note functions, power should be turned off. (Only initial power-on allows reading option function) 6-9.

  • Page 25: Trouble Shooting

    7. Trouble shooting Precautions 1. Is the power cord well connected to wall outlet? 2. Refer to the reference 1) No power Start DC-Trans primary power input? Check wires DC-Trans secondary power input? Replace DC-Trans DC 12V output from REG102? Check REG102 (MC7812) DC 5V output...
  • Page 26 2) Problem with self-test 2-1) Problem with outside temperature sensor 2-2) Problem with refrigerator temperature sensor...
  • Page 27 2-3) Problem in refrigerator defrost sensor 2-4) Problem in freezer temperature sensor...
  • Page 28 2-5) Problem in freezer defrost sensor...
  • Page 29 3) Compressor does not run Reference 1. Compressor does not operate in 5 minutes after compressor OFF. 2. Compressor does not run during defrosting. 3. Compressor does not run because low temperature is detected if freezer and refrigerator sensor is not connected.
  • Page 30 4) When cooling fan do not activate Reference Check cooling fan when defrost activation is selected. 1. When COMP is OFF both freezer and refrigerator cooling fan plus COMP cooling fan remain OFF. 2 . When COMP is ON, refrigerator fan is not always ON and when refrigerator temperature reached to a set-up temperature fan goes OFF.
  • Page 31 4-2) When refrigerator fan (R-fan) do not activate...
  • Page 32 4-3) When COMP cooling fan do not activate...
  • Page 33 5) No defrosting Reference 1. Even though both F·R-defrost sensors short-circuit, normal operation continues without defrosting.(Refer to self-diagnosis function) 2. Even though the temperature fuse is off, there is no heating but defrosting natural temperature increase comp off-time takes longer. 3.
  • Page 35 6) When alarm run continuously Reference 1. Alarm runs after 2 minute when door is open (melody) and runs in interval in every 2 minutes. 2. If door close is not done properly, MICOM will indicate that the door is open then alarm rings.
  • Page 36 6-2) If Beep sounds continuously 6-3) When original panel PCB do not activate...
  • Page 37 6-4) When buttons of panel PCB is not selected...
  • Page 38 Reference 1. Is the power cord well connected to wall outlet? 2. Be careful of high-voltage discharge because high voltage DC power is supplied to SUB-PCB. 6-5) When the light dosen’t come on in the refrigerator Start Is door switch normal? Replace door switch, check main wire Is main pcb relay normal(RY75)?

  • Page 39: Reference

    8. Reference Reference1 The connection of DOOR-CABI Reference2 Inspection of Relay * First separate the housing connected to the main PCB CN70, 71 and measure the following items. 1. Measure the coil bisection of the relay and check whether it works. 2.
  • Page 40 Reference3 Check for malfunctioning of the subordinate * Cut off the power code, separate the housing from the main PCB CN70,71 and measure the following. 1. Measure resistance between the terminals and check for malfunctioning of L/W. Measurement Evaluation of mea- Subordinate terminal surement result...
  • Page 41 Reference5 Checking the Door S/W (Refrigerator Bulb) 1. Open the door and check if the freezer bulb turns on. 2. Press the Door S/W and check if the freezer bulb turns off. 3. Close the door of freezer and repeat 1 and 2 for refrigerator.
  • Page 42 Sensor resistance and voltage conversion table for temperature Reference7 (Sensor pressure voltage 10KΩ – Voltage converted by the F-reference) * Voltage conversion table depends on H/W structure of MICOM port input voltage. Sensor Short : Micom 0V. Sensor Open : Micom 5V. ※...

  • Page 43: Exploed View

    9. Exploed View 9-1. Freezer room...
  • Page 44 OPTION CODE-NO PART NAME SPEC SR-L627 SR-L629 SR-L677 SR-L679 DA67-40203N TRAY-ICE,ASSY DA67-40182A TRAY ICE DA63-00946A TRAY-FRE UPP,ASSY DA63-00946B TRAY-FRE UPP,ASSY DA63-00947A TRAY-FRE MID,ASSY DA63-00947B TRAY-FRE MID,ASSY DA63-00948A TRAY-FRE LOW,ASSY DA63-00948B TRAY-FRE LOW,ASSY DA66-10104A ROLLER FRE DA71-20145A FIXER ROLLER DA63-00904A TRAY ICE CUBE DA63-00922A TRAY ICE CUBE DA97-00181A...
  • Page 45 9-2. Refrigeration room LAMP-FLUORESCENT...
  • Page 46 OPTION CODE-NO PART NAME SPEC SR-L627 SR-L629 SR-L677 SR-L679 CASE-VEG,ASSY DA97-00104A CASE-VEG,ASSY DA97-00184A DA67-10225A CASE-VEG CASE-VEG DA67-10229A COVER-VEG DA63-10359B ROLLER FRE DA66-10104A DA71-20145A FIXER ROLLER INLAY-COVER VEG DA68-50153H COVER-VEG ASS’Y DA63-00936A COVER-VEG ASS’Y DA63-00936B DA64-00449A TRIM-COVER,VEG TRIM-COVER,VEG DA64-00448A SHELF GLASS DA67-00505D COVER VEG SHELF GLASS...
  • Page 47 OPTION CODE-NO PART NAME SPEC SR-L627 SR-L629 SR-L677 SR-L679 TRIM-COVER SENSOR DA64-00452A SPACER-DUCT 220V~240/50Hz DA60-00033A DA31-00003L MOTOR-FAN 220V/50~60Hz MOTOR-FAN 115V~127/60Hz DA31-00003P MOTOR-FAN DA31-00003N DA63-00771A GROMMET-MOTOR SENSOR ASSY COVER EVAP DA32-10109H SEAL-COVER EVAP RE DA62-00106A SEAL AIR SIDE DA62-00109A PLATE-DRAIN REF ASSY 240V/38W DA70-00402A DA97-00441A...

  • Page 48: Door Parts

    9-3. Door parts SR-L677EV SR-L627EV...
  • Page 49 N/B(Cool n’ c ool ) DA91-01466F ASSY FOAM-DOOR REF N/S(COOL TECH) DA91-01466G ASSY FOAM-DOOR REF N/S(Cool n’ c ool ) DA91-01466H ASSY FOAM-DOOR REF DA64-00166A SAMSUNG MASCOT DA71-40135A STOPPER-MID DA71-40183C STOPPER DOOR-LOW DA91-01468A SNOW WHITH ASSY FOAM-DOOR FRE SNOW WHTE...
  • Page 50 OPTION CODE-NO PART NAME SPEC SR-L627 SR-L629 SR-L677 SR-L679 DA63-01046A COVER-CONTROL PANEL SNOW WHITH DA63-01046B COVER-CONTROL PANEL METAL GRAY DA63-01046C COVER-CONTROL PANEL NOBLE BEIGE DA63-01046D COVER-CONTROL PANEL NOBLE STAIN DA64-00444A BUTTON-PCB, L, SILVER SILVER DA64-00444B BUTTON-PCB, L, GOLD GOLD DA64-00445A BUTTON-PCB, R, SILVER SILVER DA64-00445B...
  • Page 51 9-4. Cabinet parts & unit...
  • Page 52 OPTION CODE-NO PART NAME SPEC SR-L627 SR-L629 SR-L677 SR-L679 DA60-90124A REVET-CASTER DA61-40101C CASTER REAR DA61-00178A LEG-ASSY DA61-10145D HINGE-LOW DA64-20138B TRIM-PLATE,ABSORB DA63-50146A SHIM-HINGE,LOW COVER-LEG SNOW WHITH DA63-10262F METAL GRAY DA63-10262A COVER-LEG NOBLE BEIGE DA63-10262B COVER-LEG COVER-LEG NOBLE STAIN DA63-10262N R600a DA34-00024A SWITCH DOOR R134a DA34-00122D...

  • Page 53: Disassembly & Assembly

    10. Disassembly & Assembly 10-1. Replacement of refrigerator lamp Warning Always take out the power plug when replacing the refrigerator lamp. There is the danger of electric shock. 1. Remove the cover with the back latch pressed. 2. Pull out the lamp. 3.
  • Page 54 10-3. Replacement of freezer lamp Warning Always take out the power plug when replacing the refrigerator lamp. There is the danger of electric shock. 1. Remove the cover by pressing the bottom latch. 2. Replace the lamp by turning it counter-clock wise. 3.
  • Page 55 10-4. Disassembly of the cooling cycle in the refrigeration room 1. Take out food stuffs and trays from refrigeration room. 2. Remove 4 cap screws with (–) driver or similar tools. 3. Remove 6 screws from the cover-evap. ref. assy 4.
  • Page 56 6. Remove the housing of wires.
  • Page 57 ■Cooling cycle unit assembly in the refrigeration compartment ■Dust assembly in the refrigeration compartment...
  • Page 58 10-5. Disassembly of the cooling cycle unit in the freezer 1. Take out the case from the freezer. 2. Remove 2 screws from the assy-supt free. 2 screws 3. Pull out the holder of the assy-supt free and disconnect wire terminals. ①...
  • Page 59 6. Remove 2 screws from the back cover of the cooling cycle unit and remove the latch with (–) driver. ■Assembly of the cooling cycle unit in the freezer Maintains 9˚ (Coolant & noise reduction)
  • Page 60 10-6. Assembly of mechanic compartment in the refrigerator 1. Remove the screws securing the mechanic compartment cover of the back bottom of the refrigerator. 2. Mechanic compartment assembly...
  • Page 61 10-7. Electric box assembly Warning Make sure the power plug is taken out when replacing the components for the main PCB. 1. Disconnect the power cord. 2. Remove the cover of electrical box with (–) driver. 3. Assembly specification of electric box TEST S/W Condenser D/C Trans...
  • Page 62 10-8. Temperature controller disassembly 1. With dispenser model. 1-1) Press the fixing lever, lift the exclusive water 1-2) Pull out the assembly press lever. tank upwards, then remove it. 1-3) Push the latch of control panel assembly with (-) driver and pull out the control panel 2.

  • Page 63: Pcb Circuit Diagram

    11. PCB Circuit Diagram...

  • Page 64: Specifications Of Main Components

    12. Specifications of main components 12-1 Regulator 3-TERMINAL 1A POSITIVE VOLTAGE REGULATORS The MC78XX/MC78XXA series of three-terminal positive regulators are available in the TO-220 package and with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local onward regulation, eliminating the distribution problems associated with single point regulation.
  • Page 65 REGULATOR(MC7812C) ELECTRICAL CHARACTERISTICS MC7812 (Refer to test circuit, T < T < T = 500mA, V = 19V, C = 0.33㎌, C = 1.0㎌ unless otherwise specified) max, MC7805C Unit Characteristic Symbol Test Conditions Ti = 25℃ 11.5 12.5 5.0mA≤I ≤1.0A, P ≤15W Output Voltage...
  • Page 81 © Samsung Electronics Co., Ltd. November 2001 Printed in Korea Code-No : DA68-01130A REV(0.0)

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Sr-l679evSr-l629evSr-l627ev

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