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Samsung M759R Service Manual

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SERVICE
MICROWAVE OVEN
BWT
MICROWAVE OVEN
M759R
Manual
1.
2.
3.
Auto
1.
2.
3.
Auto
1 Min +
Auto
Start
1.
2.
3.
10s.
/
1min
/g
10min
/kg
CONTENTS
8. PCB Diagrams

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  Summary of Contents for Samsung M759R

  • Page 1: Table Of Contents

    MICROWAVE OVEN M759R SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments Auto Auto 6. Troubleshooting 1 Min + Auto Start 10s. 7. Exploded Views and Parts List 1min 10min 8.
  • Page 2 (e) A Microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner. Samsung Electronics...
  • Page 3: Precaution

    CENTRAL SERVICE CENTER 16. Always connect a test instrument's ground lead to the instrument chassis ground before 10. Service technicians should remove their connecting the positive lead; always remove watches while repairing an MWO. the instrument's ground lead last. Samsung Electronics...
  • Page 4: Specifications

    (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. Fig. 1-1. Discharging the High Voltage Capacitor Samsung Electronics...
  • Page 5: Specifications

    2. Specifications 2-1 Table of Specifications TIMER 99 MINUTES 90 SECONDS POWER LEVEL ON TIME OFF TIME POWER SOURCE 230V 50Hz, AC M759R POWER CONSUMPTION MICROWAVE : 1,300W 4 sec 26 sec 160W 7 sec 23 sec OUTPUT POWER FROM 80 TO 800W (10 LEVEL POWER)
  • Page 6: Operating Instructions

    Door Safety Interlock Holes Light Ventilation Holes Auto Auto Control Panel 1 Min + Auto Start 10s. 1min 10min Glass Plate Roller Ring Door Latches Coupler Auto Auto 1 Min + Auto Start 10s. 1min 10min 489mm 368mm Samsung Electronics...
  • Page 7: Disassembly And Reassembly

    VOLTAGE TRANSFORMER secondary and filament terminals. It is extremely dangerous to work on or near these circuits with the oven energized. Screws H. V. Trans DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron. Samsung Electronics...
  • Page 8: Replacement Of Door Assembly

    1. Insertion depth of the thin metal plate should be 0.5mm or less. 4-3-4 Removal of Key Door & Spring Remove pin hinge from Door "E" Door "E" Detach spring from Door "E" and key door. Key Door Spring Samsung Electronics...
  • Page 9: Replacement Of Fuse

    Base Plate Drive Motor Cover 8. Connect all the leads to the drive motor. 9. Screw the deive motor cover to the base plate with a screw driver. 10. Remount the coupler in the correct position. Samsung Electronics...
  • Page 10 3. Lift up the control circuit board from the Ass'y Connector control box. 4. When reconnecting the FPC connector, make sure that the holes on the connector are properly screw engaged with the hooks on the Plastic Fastener. Samsung Electronics...
  • Page 11: Alignment And Adjustments

    3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the high voltage capacitor. 5-1 High Voltage Transformer 1. Remove connectors from the transformer terminals Filament Terminals and check continuity. 2. Normal resistance readings are as follows: M759R Secondary Approx. 130Ω Filament Approx.0Ω Primary Approx.1.700Ω...
  • Page 12: High Voltage Capacitor

    ∞ Primary switch 5. Confirm that the gap between the 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 13 5. After heating for 2 minutes, measure the water temperature in each beaker. 6. Microwave heat distribution rate can be calculated as follows: Minimum Beaker Temperature Rise Heat Distribution = X 100(%) Maximum Temperature Rise The result should exceed 65%. Cooking Tray Samsung Electronics...
  • Page 14: Procedure For Measurement Of Microwave Energy 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 15: Troubleshooting

    H.V.Transformer component test procedure and replace if it is H.V.Capacitor defective. H.V.Diode, H.V.Fuse 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 16 Use plastic wrap or cover with a lid. Stir once or twice while cooking foods such as soup, cocoa, or milk. Noise from the turntable motor Noise may result from the motor. Replace turntable motor. when it starts to operate. Samsung Electronics...
  • Page 17: Exploded Views And Parts List

    7. Exploded Views and Parts List 7-1 Exploded Views Samsung Electronics...
  • Page 18: Main Parts List

    M 23 DE47-20033A THERMOSTAT;PW-2N 80/70 125V15A/250V7.5A M 24 DE71-60011B COVER-MGT;PP T2.0 W54 L129 17G GRY RE-44 M 25 ASSY DOOR;M759/M759R WHT CONTINENTAL M 26 ASSY CONTROL-BOX;230V50HZ M759R WHT RUSSIA : Electrostatically Sensitive Devices : Option Parts : Warning Samsung Electronics...
  • Page 19: Door Parts List

    ASSY DOOR-A;M759/XEE P/WHT SAMSUNG SILK 7-4 Control Parts List Ref. No. Parts No. Description/Specification Q'ty Remarks DE67-40149B WINDOW-DISPLAY;ACRYL T2 SMOG 10G M759/M759R DE66-20187B BUTTON-SELECT-C;ABS(HR-0370) 5G WHT(W9501) M75 DE72-70184H CONTROL-PANEL;ABS(HR-0370) T3 W106 L261 WHT DE66-20174R BUTTON-SELECT-A;PC 2G WHT M959 DE66-20197J BUTTON-SELECT(A-B);PC 2G WHT M959 DE66-20198J BUTTON-SELECT(A-C);PC 2G WHT M959...
  • Page 20: Standard Parts List

    DE60-10082H SCREW-A;2S-4X12,TOOTHED PN/OUT DE60-10098A SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W CV-TCO DE60-10098A SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W M/DRIV DE60-10098A SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W MG-TCO DE60-10069A SCREW-TAP TH;TH M4 L10 FEFZY SCR/DOOR DE60-10088A SCREW-TAP PH;PH M3 L8 FEFZY PLAIN DE60-20063A BOLT-FLANGE;M4,10,ZPC3,YEL,MSWR HI-LOW DE60-20063A BOLT-FLANGE;M4,10,ZPC3,YEL,MSWR HI-UPP Samsung Electronics...
  • Page 21: Schematic Diagrams

    SENSING 3. LAMP : ON SYMBOL COLOR RELAY RELAY RELAY SWITCH L.V.T : P.C.B PATTERN BROWN BLUE : P.C.B IN/OUT ORANGE POINT ASSY MAIN P.C.B WHITE BLACK YELLOW DOOR MONITOR PRIMARY GREEN SENSING SWITCH LATCH YELLOW/GREEN SWITCH SWITCH Samsung Electronics...

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