Samsung SJ0390 Service Manual

Melon-green / wine-red / dark-gray

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SERVICE
MICROWAVE OVEN
SECA
MICROWAVE OVEN
SJ0390
(MELON-GREEN / WINE-RED / DARK-GRAY)
8. PCB Diagrams
Manual
CONTENTS

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Summary of Contents for Samsung SJ0390

  • Page 1: Table Of Contents

    MICROWAVE OVEN SJ0390 (MELON-GREEN / WINE-RED / DARK-GRAY) SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 6. Troubleshooting 7. Exploded Views and Parts List 8. PCB Diagrams 9. Schematic Diagrams...
  • Page 2: Precaution

    10. Service technicians should remove their watches while repairing an MWO. 16. Always connect a test instrument's ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics...
  • Page 3: Special High Voltage Precautions

    (Use a screwdriver.) 3. High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components. Samsung Electronics...
  • Page 4: Specifications

    (H) x 16 13/32 NET WEIGHT 38.6 lbs. SHIPPING WEIGHT 43 lbs 2-2 Comparison Chart MODEL MW7592W / MW7593G FEATURE MORE/LESS AUTO REHEAT AUTO DEFROST KITCHEN TIMER POWER LEVEL INSTANT COOK ONE MINUTE CHILD LOCK CLOCK DEMO MODE GENTLE COOK Samsung Electronics...
  • Page 5: Operating Instructions

    3. Operating Instructions 3-1 Control Panel Instant Reheat Button (Popcorn, Beverages, Pizza) 1 min. 5 sec. Min. Clear/Off Button Cooking Time Button 3-2 Features & External Views Glass Cook Tray Door latches Display Control Panel Door 316mm 281mm Samsung Electronics...
  • Page 6: Disassembly And Reassembly

    There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH VOLTAGE TRANSFORMER secondary and filament terminals. It is extremely dangerous to work on or near these circuits with the oven energized. DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron. Samsung Electronics...
  • Page 7: Replacement Of Door Assembly

    2. When 15A fuse blows out by the operation of interlock monitor switch failure, replace the primary interlock switch, door sensing switch, monitor switch and power relay. 3. When the above three switches operate properly, check if any other part such as the control circuit board, blower motor or high voltage transformer is defective. Samsung Electronics...
  • Page 8: Replacement Of Control Circuit Board

    1. Window display should not be disassembled as its mounting tabs will be broken. If repair work is difficult, replace with Ass'y control panel. 2. The membrane key board is attached to the escutcheon base with doublefaced adhesive tape. Therefore, applying hot air such as using of hair dryer is recommended for smoother removal. Samsung Electronics...
  • Page 9: Alignment And Adjustments

    2. Isolate the magnetron from the circuit by disconnecting its leads. 3. A continuity check across the magnetron filament terminals should indicate one ohm or less. 4. A continuity check between each filament terminal and magnetron case should read open. Magnetron Antenna Cooling Fins Samsung Electronics...
  • Page 10: High Voltage Capacitor

    Door Closed ¥ 5. Confirm that the gap between the switch Primary switch ¥ Monitor switch (COM-NC) housing and the switch actuator is no more than ¥ Monitor switch (COM-NO) 0.5mm when door is closed. ¥ Door Sensing S/W Samsung Electronics...
  • Page 11: Output Power Of Magnetron

    If it gets closer than 2 inches, erroneous readings may result. 5) Measured leakage must be less than 4mW/cm , after repair or adjustment. Maximum allowable leakage is 5mW/cm 4mW/cm is used to allow for measurement and meter accuracy Samsung Electronics...
  • Page 12: Check For Microwave Leakage

    ; CENTRAL SERVICE CENTER 5-13-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer. Samsung Electronics...
  • Page 13: Troubleshooting

    H.V.Transformer component test procedure and replace if it is H.V.Capacitor defective. H.V.Diode Magnetron 4. Open or loose wiring of power relay 5. Defective primary latch switch 6. Defective power relay or Ass'y PCB Replace PCB main. Samsung Electronics...
  • Page 14 Uneven intensity of microwave due to Wrap thinner parts of the food with its characteristics. aluminum foil. Use plastic wrap or cover with a lid. Stir once or twice while cooking foods such as soup, cocoa, or milk. Samsung Electronics...
  • Page 15: Exploded Views And Parts List

    7. Exploded Views and Parts List 7-1 Exploded Views Samsung Electronics...
  • Page 16 Parts No. Description/Specification Q'ty Remarks DE70-10012F PANEL-OUTER;SECC T0.5,W296.5,L931,-,MELON- MELON-GREEN DE70-10012J PANEL-OUTER;SECC T0.5,W296.5,L931,-,WINE-R WINE-RED DE70-10012B PANEL-OUTER;C/STEEL,T0.5,931,296.5,JE320GA DARK-GRAY DE64-40313B DOOR-C;PP,-,BLK,-,JE320GA DE94-00007J ASSY DOOR;SJ0390-A/XAC,MELON-GREEN,SECA MELON-GREEN DE94-00007G ASSY DOOR;SJ0390-C/XAC,WINE-RED,SECA WINE-RED DE94-00007H ASSY DOOR;SJ0390-D/XAC,DARK-GRY,SECA DARK-GRAY DE92-50131B ASSY DOOR-E;JE320GA,-,BLK,GE DE64-40329N DOOR-A;ABS,-,-,-,-,SJ0390-A/XAC,- MELON-GREEN DE64-40329L DOOR-A;ABS,-,-,-,-,SJ0390-C/XAC WINE-RED DE64-40329M DOOR-A;ABS,-,-,-,DARK-GRY,SJ0390-D/XAC...
  • Page 17 Ref. No. Parts No. Description/Specification Q'ty Remarks DE39-00005A ASSY POWER CORD;120V,-,-,JE320WAC/GAC DE47-20033A THERMOSTAT;PW-2N,80/70,125V15A/250V7.5A,1 DE93-20096A ASSY BODY LATCH;JE320 DE94-00008N ASSY CONTROL-BOX;120V60HZ,SJ0390-A/XAC,MELON-GREEN MELON-GREEN DE94-00008L ASSY CONTROL-BOX;120V60HZ,SJ0390-C/XAC,WINE-RED WINE-RED DE94-00008M ASSY CONTROL-BOX;120V60HZ,SJ0390-D/XAC,DARK-GRY,SECA DARK-GRAY 3601-000439 FUSE-FERRULE;250V,15A,TL,CERAMIC,6.35x31.8m 7-3 Standard Parts List Parts No. Description / Specification...
  • Page 18 8. P.C.B Diagrams 8-1 P.C.B Diagram Samsung Electronics...
  • Page 19 DE13-20009A IC;KA7533,DIP,-,-,-,-,- IC03 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE,-, J001,J002,J003,J004,J005,J006 DE39-60001A WIRE-SO COPPER;PI0.6,SN,T,52MM,TAPING_WIRE,-, J007,J008,J009,J010 0703-001048 DISPLAY-LED;GRN,4digit,7seg,45.2x22.38x27. DSP1 1003-001033 IC-SOURCE DRIVER;TD62781AP,DIP,18P,300MIL,OCTAL IC02 3501-001062 RELAY-POWER;24VDC,523.2mW,16A,1FormA,15mS, RY01 DE09-30704A IC-MCU;KS57C0004-L0E,JE320,4,SDIP,-,- IC01 DE13-20016A IC-VOLT REGU;KA7805A,TO-220AB,1A,0/125C,-,- RG01 DE26-20149A TRANS-L.V;SLV-4270U,120V,60HZ,AC17V/7V,- LVT1 DE30-20016A BUZZER;CBE2220BA,STICK,-,-,-,-,-,-,- BUZ1 DE39-40760A WIRE HARNESS;DC24V,M308/RE400,WIRE-FLAT,5P, CN02 Samsung Electronics...
  • Page 20: Schematic Diagrams

    9. Schematic Diagrams 9-1 Schematic Diagram Samsung Electronics...

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