Samsung M735 Service Manual
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Samsung M735 Service Manual

Samsung M735 Service Manual

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SERVICE
MICROWAVE OVEN
NSI
MICROWAVE OVEN
M735
400
250
560
120
800W
0
1
2
60
3
50
4
40
5
30
6
20
7
10
8
9
M735
Manual
CONTENTS

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Summary of Contents for Samsung M735

  • Page 1: Table Of Contents

    MICROWAVE OVEN M735 SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 800W 6. Troubleshooting M735 7. Exploded Views and Parts List 8. Wiring Diagram...

  • Page 2: 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 3: 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 4: Specifications

    2. Specifications 2-1 Table of Specifications M735 POWER SOURCE 230V 50Hz, SINGLE PHASE POWER CONSUMPTION 1300W OUTPUT POWER 120W/800W OPERATING FREQUENCY 2450MHz TIMER 60 MINUTES COOLING METHOD AIR COOLING MAGNETRON OM75SH(31)ESST OUTSIDE DIMENSIONS 489(W) x 356(D) x 275(H)mm OVEN CAVITY DIMENSIONS...

  • Page 5: Operating Instructions

    3. Operating Instructions 3-1 Control Panel 800W M735 Samsung Electronics...

  • Page 6: Checking That Your Oven Is Operating Correctly

    Operating Instruction 3-2 Features & External Views Ventilation Slot Light Door Safety Interlock Holes 800W Control Panel Door Latches M735 Open Door Push Button Glass Tray Guide Roller 800W M735 200mm 357mm 489mm 356mm 3-3 Checking That Your Oven is Operating Correctly NOTE: The oven must be plugged into an appropriate wall socket.

  • Page 7: Variable Power Cooking Chart

    Operating Instruction 3-4 Variable Power Cooking Chart Operation: OUTPUT POWER LEVEL Set the COOKING POWER CONTROL M735 knob to the appropriate power level by turning it. HIGH 100% 800W MEDIUM HIGH 560W MEDIUM 400W 240W DEFROST 160W WARM 120W 3-5 Adjusting the Cooking Time During Cooking...

  • Page 8: Disassembly And Reassembly

    4-2 Replacement of High Voltage Transformer 1. Discharge the high voltage capacitor. 2. Disconnect all the leads. 3. Remove the mounting bolts. 4. Reconnect the leads correctly and firmly. H. V. Trans Screws Samsung Electronics...

  • Page 9: 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" Detach spring from Door "E" and key door. Door "E" Key Door Spring Samsung Electronics...

  • Page 10: Replacement Of Fuse

    8. Connect all the leads to the drive motor. Base Plate 9. Screw the deive motor cover to the base plate Drive Motor Cover with a screw driver. 10. Remount the coupler in the correct position. Samsung Electronics...

  • Page 11: 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. Cooling Fins 4. A continuity check between each filament terminal and the magnetron case should read "open". Samsung Electronics...

  • Page 12: High Voltage Capacitor

    ¥ Primary switch ¥ Monitor switch (COM-NC) 5. Confirm that the gap between the switch housing and the switch actuator is no more ¥ Monitor switch (COM-NO) than 0.5mm when door is closed. ¥ Secondary switch Samsung Electronics...

  • Page 13: Output Power Of Magnetron

    5. After heating for 2 minutes, measure the temperatures of water in each beaker. 6. Microwave heat distribution rate can be caicviated as follows : Cooking Tray Minimum Temperature Rise Heat Distribution = X 100(%) Maximum Temperature Rise The result should exceed 65%. Samsung Electronics...

  • Page 14: Procedure For Measurement Of Microwave Energy Leakage

    3) Set survey meter with dual ranges to 2,450MHz. 4) When measuring the leakage, always use the 2 inch spacer cone with the probe. Hold the probe M735 perpendicular to the cabinet door. Place the spacer cone of the probe on the door and/or...

  • Page 15: Troubleshooting

    2) Defective con- The oven lamp does not light and fan motor Replace the timer. tacts of timer does not operate. NOTE: Interlock monitor switch must be replaced when the fuse is blown out. Samsung Electronics...
  • Page 16 3) Too small a If a small amount of food is heated repeatedly over To increase the oven load or no a long period of time, microwave turns off during load, place a glass of load operation. water into the oven. Samsung Electronics...

  • Page 17: Unsatisfactory Cooking

    1) If there is no continuity in forward, direction the H.V.Diode is open. Replace. 2) If there is continuity in reverse direction, it's shorted. Fan motor Fan motor Check if the motor coil is open. Replace. does not rotate. Samsung Electronics...

  • Page 18: Exploded Views And Parts List

    7. Exploded Views and Parts List 7-1 Main Exploded View Samsung Electronics...

  • Page 19: Main Parts List

    DE31-10154A MOTOR-DRIVE;M2HJ49ZR02,ST-16,21V,05ø˘ 06¿œ DE80-10003A BASE-PLATE;SGCC1-Z,T0.8,W340,L550,M745,-, DE47-20033A THERMOSTAT;PW-2N,80/70,125V15A/250V7.5A,1 CV-TCO DE71-60011A COVER-MGT;PP,T2.0,WHT,M745,-,-,-,-,- 3601-000448 FUSE-FERRULE;250V,10A,SLOW-BLOW,CERAMIC,6.3 3601-001126 FUSE-FERRULE;250V,1.6A,QUICK-ACTING,CERAMIC DE92-40165B ASSY DOOR;PUSH,WHT,M735/M745(SAW),WHT/BA DE93-30360A ASSY CONTROL-BOX;M735(SAW),-,-,-,-,-,- DE74-20102B TRAY-COOKING;GLASS,T5.0,PI288,780G,M745,-,- DE92-90436A ASSY-GUIDE ROLLER;D16.5,MW4370W,-,-,-,- DE67-60002A COUPLER;PPS,5GR,BRN,M97G45,-,-,-,- DE27-10020A COIL-MC CHOKE;TC,101 : Electrostatically Sensitive Devices : Option Parts : Warning Samsung Electronics...
  • Page 20 Description / Specification Q'ty Remarks DE66-20006A BUTTON-PUSH;RESIN-ABS(HR-0370U) P/WHT M945 DE61-70076A SPRING-BUTTON;HSWR PI0.6 DE64-10123A KNOB;PURE-WHT M97G35 DE72-70006A CONTROL-PANEL;ABS WHT M735(SAW) DE45-10074A TIMER-ASSY;TMFK60MTAL 220/240V-50HZ CMO-TYP 3501-000309 RELAY-POWER;CHP11-A240S-250V15A 240V,3750VA DE93-30532D ASSY CONTROL-PANEL;M735(SDW,SSW) 7-5 Assembly Body Latch Parts List Ref. No Parts No. Description / Specification...

  • Page 21: Standard Parts List

    SCREW-A;2S-4X12,TOOTHED,-,-,-,-,-,-,-, BD-LAT DE60-10082H SCREW-A;2S-4X12,TOOTHED,-,-,-,-,-,-,-, CN-BOX DE60-10082H SCREW-A;2S-4X12,TOOTHED,-,-,-,-,-,-,-, CV/AIR DE60-10082H SCREW-A;2S-4X12,TOOTHED,-,-,-,-,-,-,-, MO/FAN 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 DE60-20063A BOLT-FLANGE;M4,10,ZPC3,YEL,MSWR,-,-,-,- HI-LOW DE60-20063A BOLT-FLANGE;M4,10,ZPC3,YEL,MSWR,-,-,-,- HI-UPP DE60-10012A SCREW-TAP TITE;TH,+,3,M4,L10,SWR10,ZPC2,TOOTH Samsung Electronics...

  • Page 22: Wiring Diagram

    BROWN BLUE BLU,ORG BRN,BLU ORANGE WHITE PRIMARY SECONDARY MONITOR BLACK LATCH S/W LATCH S/W LATCH S/W High Voltage Circuit MAGNETRON HIGH VOLTAGE DIODE TO CHASSIS HIGH VOLTAGE CAPACITOR H.V.FUSE SYMBOL COLOR BROWN BLACK BLUE ORANGE HIGH VOLTAGE TRANSFORMER Samsung Electronics...

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