REFRIGERATOR Model : SR-L676EV SR-L678EV SR-L626EV SR-L628EV GREEN REFRIGERATOR CONTENTS 1. Precautions 2. Product Specifications 3. Electrical Part Specifications & Standard 4. Circuit Diagram 5. Functions & Operating Instruction 6. Circuit Descriptions 7. Troubleshooting 8. Parts List 9. Disassembly & Assembly 10. PCB Circuit Diagram SR-L676EV SR-L678EV SR-L626EV SR-L628EV 11. PCB Parts List 12.
. Product Specifications Model SR-L628EV Type SR-L678EV SR-L626EV SR-676EV (LMF(Freezer/Refrigerator) 2 Door) Freezer performance (4-STAR) Temperature control Electronic control Yes Water dispenser Net Capacity 3 No Freezer 171(6.04) 192(6.78) 171(6.04) 192(6.78) Refrigerator 345(12.18) 376(13.28) 351(12.39) 382(13.49) Total 516(18.22) 568(20.06) 522(18.43) 574(20.
ITEM STANDARD Freezer Refrigerator Temperature Type ON(˚C) OFF(˚C) High –20˚C –22˚C Mid –16.5˚C –18.5˚C Low –14˚C –16˚C Mode ON(˚C) OFF(˚C) High –0.5˚C –1.5˚C Mid 3.5˚C 2.5˚C Low 6.5˚C 5.
5. Function & Operating Instr uction C 10 • 5-1 Product Dimension D 40 77 11 10 E B "X" A 673.5 8 "Y" 10 64 820 6 MODEL A B C D E Remarks SRG-L678EV SRG-L676EV SR-L628EV SR-L626EV 1750.0 1750.0 1750.0 1750.0 994.5 994.5 994.5 994.5 1509.7 1509.7 1459.7 1459.
-2 Part Name & Disassembly • Chilled Compartment disassembly • Top tray disassembly Take out food stuffs and pull it out by following the arrow. Pull it forward. 1. Pull it out by following the arrow. 2. Bend the cover and take it out. ① • • • ② Take out the water bottle with the bottom latch pressed. • • • • Tray disassembly Pull it out by following the arrow.
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 SIDE CLUSTER PIPE R TO RA O AP EV R- CAPILLARY TUBE ACCUMULATOR F-EVAPORATOR SUCTION PIPE SUB CONDENSER 8 DRYER HOT PIPE COMP.
5-4 Cool Air Circulation R-FAN MOTOR R-EVAPORATOR SUCTION AIR F-FAN MOTOR F-EVAPORATOR OUTPUT AIR SUCTION AIR Samsung Electronics 9
QUICK HIGH …. FREEZER …. LOW LOW ….REFRIGERATOR…. HIGH QUICK X-FLOW HIGH HUMI ALM QUICK FREEZER ALARM REFRIGERATOR QUICK SR-L628/678EV QUICK HIGH …. FREEZER …. LOW LOW ….REFRIGERATOR…. HIGH QUICK X-FLOW HIGH HUMI ALM QUICK FREEZER TEMP.CONTROL REFRIGERATOR QUICK SR-L626/676EV 1. Temperature Control Functions A. Temperature control in the freezing compartment 1) Select the 5 STEPS of ‘MED’–‘MED · HIGH’–‘ HIGH’–‘LOW’–‘LOW · MED’ with one button.
B. Temperature control in the refrigeration compartment 1) Select the 5 stages of ‘MED’–‘MED · HIGH’–‘HIGH’–‘LOW’–‘LOW · MED’ with a button. 2) Whenever the temperature control button of refrigerator is pressed, it continues of light from ‘MED’ to ‘LOW · MED’. 3) When power turns on “MED” is automatically selected. Category Initial power on Pressed once Pressed twice Pressed 3 times Pressed 4 times Indicator Lamp MED MED·HIGH HIGH LOW LOW·MED Reference Temp. 3˚C 1˚C –1˚C 6˚C 4.5˚C Remark C.
2. Alarm function A. Button touch(Ding-Dong Sound) 1) When each button on the control panel is pressed, the beep sounds to confirul the key input. 2) The beep does not sound if wrong-touch. B. Door open(Ding-Dong Sound) 1) When the door of either freezer of refrigerator is open for more than 2 minutes, the alarm rings. 2) The alarm rings for 10 seconds every one minute. When the door closes, the alarm goes off immediately. 3) Door open alarm rings when the display button is selected.
4. Test function A. Forced starting function 1) The test functions are designed for PCB, product test, process inspection and service activities. 2) The test switch is on the main PCB and when pressed once, it immediately works cooling without comp delay. 3) If the forced starting is selected, freezer and refrigerator notches are selected to “HIGH” and “HIGH”· MED”. Comp and F-Fan are controlled by pull-down and R-Fan is controlled by “HIGH · MED” notch.
5. Self-diagnosis function A. Self-diagnosis function with initial power on 1) If the power is supplied to refrigerator at first, all displays are on and self-diagnosis function is carried out. 2) If there is no defect on MICOM, display returns to the initial normal mode(“Med”–“HIGH humidity”–“Alarm”). 3) If there is defect, the televant display lights off with the sound of the beep. 4) Self-diagnosis error indicator might disappear when defect is repaired or self-diagnosis function is released.
No Item Display LED Symptom Remark 1 R1-Sensor Refrigerator “LOW” • R-room left sensor housing disconnection. • Faulty connection. • Wire open or short. • Faulty sensor. R1-Sensor temperature is over +50˚C or below –50˚C. 2 R2-Sensor Refrigerator “LOW · Med” • R-room left right sensor housing disconnection. • Faulty connection. • Wire open or short. • Faulty sensor. R2-Sensor temperature is over +50˚C or below –50˚C.
C. Load status display 1) When “power freezing” button and “power refrigeration” button are pressed for 5 seconds during normal operation, it is activated by the refrigeration button while temperature setting display repeats on/off 3 times. 2) Load which output of micom is displayed on LED. 3) Load status display maintains for 60 seconds and returns to normal operation.
6. Option function (Unit ˚C) 1) Freezer Temperature Shift SHIFT 14 13 12 11 SHIFT 14 13 Reference 0 0 0 0 +0.5 1 -0.5 0 0 0 1 +1.0 -1.0 0 0 1 0 -1.5 0 0 1 -2.0 0 1 -2.5 0 -3.0 -3.5 (Unit ˚C) 2) Refrigerator Temperature Shift 12 11 SHIFT 18 17 16 15 SHIFT 18 17 16 15 0 0 0 Reference 0 0 0 0 +0.5 1 0 0 0 1 0 0 1 -0.5 0 0 0 1 +1.0 1 0 0 1 +1.5 1 0 1 0 -1.0 0 0 1 0 +1.5 1 0 1 0 1 +2.0 1 0 1 1 -1.5 0 0 1 1 +2.
6. Circuit Descriptions 1. Power cir cuit (DC12V) +12 HEAT-STICK HEAT-STICK 7812 7805 BD05-08 1N4004 X 4 CON1 1 104 (MC7805) FUSE2 250V 0.
2. Oscillator 30 30P Xin x-tal 31 Xout 30P Port Oscillating Fr equency Xin 4.00MHz Xout 4.00MHz 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. ±0.5% Error 3.
DOOR Door Conditions Door S/W Contact CLOSE F R MICOM PIN NO Micom Input Voltage OPEN OPEN CLOSE CLOSE OPEN OPEN “LOW” #7 “HIGH” “LOW” #8 CLOSE “HIGH” 1) If door is open, door S/W contact is closed. Then MICOM receives “low” signal and detects door open. 2) If door is closed, door S/W contact is open. Then MICOM receives “high” signal and detects door close. 5. “V” Motor Position Detector(Reed S/W) CON 02 7 REED S/W Vcc R405 4.
6.
7. Key scan and display circuitry CON7 (XH-11P) IC04 P04 P03 P02 P01 P00 13 3 12 4 11 5 10 6 16 10 10 10 15 9 9 9 14 4 4 4 3 3 3 2 2 2 1 5 6 7 8 11 1 5 6 7 8 11 1 5 6 7 8 11 13 7 12 8 9 GND VCC 10 9 UDN2003(2803) +12 C23 104 IC05 P75 P74 P73 P72 P71 P70 6 1 18 GRID 05 5 2 17 GRID 04 4 3 16 GRID 03 3 4 15 GRID 02 2 5 14 1 13 6 GRID 01 R04 R502 10 1.2K 9 R503 1K C501 3K R501 4.
2) Key Scan The grid waveform of each output is supplied to each button line through switching diode (IN4148). The grid #1 signal goes to the setting button of refrigerator. Then, refrigerator button is pressed, around 4.5V goes to IC05(UAN2981A) pin 8 through key input line. MICOM detects the refrigerator button pressed after MICOM pin1 receives the signal. 8.
1) Compressor and Defrost Heater RY08 C NC AC POWER RY09 C NO NC RY01 NO COMP F-Defrost heater R-Defrost heater As above block diagram, the commons of compressor relay(RY 08) and defrost heater relay(RY 09, RY 01) are respectively connected to AC POWER line. If relay is not activated(OFF) contact maintaills NC, and compressor and defrost heater are all off, activated and contact is switched on. Then, AC POWER is supplied to compressor activated.
9. Other option functions Temperature and function values are changeable by using main PCB switching diode. • Note : If possible, do not change be cause the values have been set in factory. When changing option functions, power should be turned off.
1) Power circuit PCB sub ass’y (Inverter PCB) is activated with AC POWER input when the refrigerator door is open and R-lamp relay(RY05) is activated. If the AC POWER is supplied to the power block, the smooth capacitor(C3) gets around VOLTAGE DC(VOLTAGE AC X 2) AC POWER through rectification. 2) Lamp If power is supplied to the PCB sub ass’y, diac(DB4) is activated. When C4 is over 35C/DC, voltage is supplied to TR Q2 base by the continuity of diac. Then, TR Q2 is activated.
4) Troubleshooting Precautions 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. ① When the light dosen ’t come on in the refrigerator Start Is power supplied to sub-PCB? N Check wires and main PCB relay Y N N Is power supplied to smoother C2? Y Is TH-S/W normal? Y Check the power Does lamp oscillate at 35±5KHz? N Check PTC.
7. Troubleshooting Precautions 1. Is the power cord well connected to wall outlet? 2.
2) Compressor does not run Precautions 1. Compressor does not operate in 5 minutes after power ON and compressor OFF. 2. Compressor does not run during defrosting. 3. Compressor does not run because low temperature is detected if freezer sensor is not connected. Start 5 minutes after compressor off? N Y Is compressor operated by forse? Reference 6 Check it after 5 minutes Y (Page. 40) N N Replace MICOM and PCB N Replace IC07 N Replace relay Reference 7 (Page.
3) No defrosting Precautions 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. Even though both F·R-defrost sensor are open, heating does not end and comp-off maintains with temperature fuse short-circuited.
A Return to normal? Y Normal N Defrost sensor temperature is over than the finish temperature? Reference 7 (Page. 41) Measure defrost-sensor resistance Y Reference 7 (Page. 41) Measure defrost-sensor resistance Y Micom pins 58, 61 voltage is over than the finish temperature? Samsung Electronics N Replace the relative sensor N Replace temp.
5) Fan-motor does not run Precautions 1. Compressor operates but fan does not run(F·R doors open) 2.
5) Fan motor in the refrigeration room does not work Precautions 1. Fan-motor operates with 2 modes.(Static or Rotation) 2. Fan-motor rotates for 30 seconds after one second of door open.
6) Lamp Inspection Note 1. When replacing Sub-PCB, power should be turned off, because Sub-PCB receives AC POWER INPUT and converts that to 1.5 X AC POWER INPUT. 2. It is impossible to check lamp with normal voltage tester, because lamp voltage is high. References 1. If new lamp does not turn on, that’s because the protector is activated to prevent peak voltage when lamp is replaced. After replacing lamp, wait for 30 seconds after closing the door of refrigerator. 2.
① Lamp in the refrigeration room does not light up Start Is lamp connected to connector(pin4)? N Connect connector, Faulty connection Y Is the filament coil of lamp short or faulty? Faulty lamp, Replace it Y Is there water in door S/W or connector well connected? N Repair, Replace door S/W Y Is main PCB connected to Sub-PCB connector? N Connect connector, Faulty Connection Y Sub-PCB fuse is OK? N Replace Sub-PCB fuse Y Check connector and door S/W.
8. Part List 1.
NO CODE-NO 1 DA67-40203D ASS'Y-TRAY ICE HIPS 1 1-1 DA71-20120A FIXER-TRAY ICE HIPS 1 1-2 DA67-40182A TRAY-ICE PP 2 1-3 DA64-40111A KNOB-TRAY, ICE HIPS 2 1-4 DA61-20102A SPRING STS 304B WPB 2 2 DA67-40200C ASS'Y-TRAY, FREE(UPP) HIPS 1 2-1 DA66-10104A ROLLER POM 12 2-2 DA71-20145A FIXER-ROLLER NY-66 12 3 DA67-40201C ASS'Y-TRAY, FREE(MID) HIPS 1 4 DA67-40202C ASS'Y-TRAY, FREE(LOW) HIPS 1 5 DA67-10208A TRAY-ICE CUBE ABS 1 7 DA63-10012A ASS'Y-COVER EVAP
NO 11-4 11-5 CODE-NO ITEM SPECIFICATION Q’TY DA31-10109B MOTOR FAN AMRHB-008WTEB 1 DA31-10109F MOTOR FAN AMRHB-008UVEB 1 DA31-10109W MOTOR FAN AMRHB-008ZREB 1 DA31-10109D MOTOR FAN AMRHB-008ZQEB 1 DA61-20128D SPRING-FAN STS 27WR 1 SEAL-COVER EVAP RE(F) FOAM-LEX ALT3 1 11-6 11-7 6002-000224 SCREW TAP TH 2S-4 X 12 FE FZY 1 11-8 DA72-60042A GROMMET-CASE MOTOR NBR(BLK) 1 DA63-40119A GROMMET-FAN MOTOR NBR(BLK) 1 11-9 42 REMARK Samsung Electronics
2.
NO CODE-NO DESCRIPTION SPECIFICATION Q’TY 1 DA67-10230B ASS'Y-WARE VEGETABLE ABS 1 1-1 DA67-10229A WARE-VEGETABLE ABS 711 X 409 X 221 1 1-2 DA63-10359B COVER-VEGETABLE GPPS 711 X 211 X 67 1 1-3 DA66-10104A ROLLER-FREE POM 4 1-4 DA71-20145A FIXER-ROLLER NY-66 4 2 DA67-20169B ASS'Y-SHELF REF LOW 2-1 DA67-20142B SHELF-REF LOW ABS 721 X 404 X 24 1 2-2 DA64-20116A TRIM-SHELF LOW T=0.
NO CODE-NO DESCRIPTION SPECIFICATION Q’TY 11 DA63-10467A COVER-SENSOR REF HIPS 2 12 DA74-20130D ASS'Y-COVER DUCT REF 220V~240V 1 DA74-20130F ASS'Y-COVER DUCT REF 110V~127V 1 12-1 DA63-10215A COVER-DUCT REF 12-2 DA31-20003A BLADE-AIR HIPS 477 X 232 X 54 1 12-3 DA72-40178A SPACER-COVER DUCT FOAM-PS 1 12-4 DA72-60159A SEAL-DUCT RE FOAM-PS 1 12-5 DA60-40104B WASHER HIPS Φ4 X T1.
3.
NO CODE-NO 1 DESCRIPTION ASS'Y-DOOR FOAM REF SPECIFICATION SR-L628EV/L678EV Q’TY 1 1-1 DA63-30178A GASKET-DOOR REF 1-2 DA71-40135A STOPPER-MID STS 304 T2 2 1-3 DA63-40118A GROMMET-HINGE MID POM 2 1-4 DA66-90111A ASS'Y-AUTO CLOSE POM 2 2 1 ASS'Y-DOOR FRE 1 2-1 DA63-30178B GASKET-FREE 1 3 DA63-20001A GUARD-REF LOW ASS'Y 1 4 DA63-20175A GUARD-REF MID R GPPS 1 5 DA63-20185A GUARD-REF UPP L GPPS 2 6 DA63-20150A GUARD-REF UPP R GPPS 2 7 DA71-70108A GUIDE-BOTTLE
NO CODE-NO DESCRIPTION SPECIFICATION Q’TY 16 DA63-10472C COVER-DISPENSER ASS'Y 17 DA41-20101B ASS'Y-PCB DISPLAY 18 DA67-40167B TRAY-WATER ABS 1 19 DA64-20104A TRIM-TRAY ABS(MP-0160) 1 20 DA61-10153A ASS'Y-HINGE MID 21 DA61-10151A HINGE-UPP SHP1 T3.
4.
NO CODE-NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 50 DA61-40110A DA61-10143A DA61-30103A SK190Q-L2U SK190H-L2U SK182Q-L2U SK182H-L2U SK182P-L2W SK182E-L2W DA34-10003W DA34-10003N DA34-10003G DA34-10003P DA34-10003E DA35-10003L DA35-10002N DA35-10003H DA63-10477A DA32-10105F DA65-20101A DA63-40165A DA34-10122A DA73-30102A DA60-10124A 6501-000123 DA74-30131A DA63-40171B DA41-20002A DA41-20147A DA41-20160A DA41-20148A DA60-10124A DA71-60119A DA60-90101A DA61-40101A DA66-20
NO 27 CODE-NO DESCRIPTION SPECIFICATION Q’TY DA31-10110F CIRCUIT-MOTOR IS3208-SCF7A 220/50 1 DA31-10110H CIRCUIT-MOTOR IS3208-SCL5A 240/50 1 DA31-10110L CIRCUIT-MOTOR IS3208-SCO6A 127V/60HZ 1 DA31-10110G CIRCUIT-MOTOR IS3208-SCH6A 110/60 1 28 DA31-20101A FAN ABS 2 29 DA61-20128D SPRING-FAN STS 27 1 30 6002-000215 SCREW TH1 4 X 16 1 31 DA73-10301A ASS'Y-SUB COND SR-L49, L52 1 32 2501-000401 CAPACITOR 5µF/350VAC 1 2401-000511 CAPACITOR 12µF/250VAC 1 2501-00027
9. Disassembly & Assembly 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. After replacing the lamp, assemble the front latch of cover and then connect the back latch. 4. Plug in and check if power is cut off or not by pressing the R-door switch.
2. 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. Reassemble the cover in the reverse order of disassembly and plug in and the check if power is cut off by pressing the door switch.
3. Disassembly of the cooling cycle in the r efrigeration room 1. Take out food stuffs and trays from refrigeration room. 2. Bend the cover of chilled compartment and remove the left axis. 3. Move the holder of chilled compartment to the arrow ¨ and pull it out. 1 1 2 4. Remove 2 cap screws with (–) driver or similar tools. 2 screws 5. Remove 2 latches from the bottom of the cover in the front of evaporator.
6. Remove the evaporator cover by pulling out the bottom of the evaporator cover. 7. Remove the housing of wires from the center of the cooling cycle unit and remove the terminal from the geared motor. 8. Pull forward the insulating material of the cooling cycle unit and remove the wire terminal and insulating material. 9. Remove 2 screws securing refrigerator duct and pull it out by following the arrow.
10. Remove the wire terminal from the left top of refrigeration room 11. Remove 2 screws securing the back cover of cooling cycle unit and remove the left and right latches with (–) driver.
■ Cooling cycle unit assembly in the refrigeration room 2 holders securing evaporator Absorber sound(Noise protector) Temp.
■ Rotating duct assembly in the refrigeration room Seal-air Cover-duct, REF Motor-Geared Washer(Prevention noise) Reed S/W Blade-air Seal-duct, RE (Prevention Temp.
4. Disassembly of the cooling cycle unit in the fr eezer 1. Take out the case from the freezer. 2. Remove 2 screws from the holder of the cooling cycle unit. 2 screws 3. Pull out the holder of the cooling cycle unit and disconnect wire terminals. ① ② 4. Remove the latch of the cooling cycle unit cover from the bottom. ② ③ ① 5. Remove each terminal from the top of the left wire assembly.
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 EVAP holder Maintains 45˚ (Coolant & noise reduction) EVAP Temp. Fuse Temp.
5. Assembly of mechanic compar tment in the refrigerator 1. Remove the screws securing the mechanic compartment cover of the back bottom of the refrigerator. 2.
6. 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.
7. Temperature controller disassembly 1. With dispenser model. Samsung Electronics 2.
10. PCB Circuit Diagram HALL IC SET CON1 7 1 3 5 1 3 5 9 7 9 7 LVT R- 7 CON9 RED SWING MOTOR COMP COOL FAN 9 1 9 1 7 5 3 1 5 3 1 7 6 5 4 3 2 1 1 2 3 7 6 5 4 3 2 1 1 2 3 4 5 6 1 2 3 5 3 1 7 5 3 1 5 3 (R-C/FAN) (F-C/FAN) CON3 CON2 YEL CON6 CON8 CON10 5 3 F- F-DOOR S/W R-DOOR S/W Vcc OUTPUT G R2-ROOM R1-ROOM THERMISTOR F-ROOM THERMISTOR R / DEF - SONSOR THERMISTOR F / DEF - SONSOR 1 2 3 4 5 6 FUSE2 250V 0.
11.
