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SERVICE
MICROWAVE OVEN
SEHK
MICROWAVE OVEN
M633
1. Precaution
2. Statements
3. Operating Instructions
4. Disassembly and Reassembly
375
5. Alignment and Adjustments
225
525
112
750W
0
1
2
60
3
50
4
40
5
30
6
6. Troubleshooting
20
7
10
8
9
M633
7. Exploded Views and Parts List
8. Wiring Diagrams
Manual
CONTENTS

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Summary of Contents for Samsung M633

  • Page 1 MICROWAVE OVEN M633 SERVICE Manual MICROWAVE OVEN CONTENTS 1. Precaution 2. Statements 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments 750W 6. Troubleshooting M633 7. Exploded Views and Parts List 8. Wiring Diagrams SEHK...
  • Page 2: Precaution

    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 (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 M633 POWER SOURCE 230V 50Hz, AC POWER CONSUMPTION 1300W OUTPUT POWER FROM112W TO 750W (6 LEVEL POWER) (IEC-705 TEST PROCEDURE) OPERATING FREQUENCY 2450MHz TIMER 60 MINUTES COOLING METHOD COOLING FAN MOTOR MAGNETRON OM75S(31) OUTSIDE DIMENSIONS...
  • Page 5: Operating Instructions

    3. Operating Instructions 3-1 Control Panel 750W M633 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 750W Control Panel Door Latches M633 Open Door Push Button Glass Tray Guide Roller 750W M633 200mm 357mm 489mm 351mm 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 M633 knob to the appropriate power level by turning it. HIGH 100% 750W MEDIUM HIGH 525W MEDIUM 375W 225W DEFROST 150W WARM 112W 3-5 Adjusting the Cooking Time During Cooking...
  • Page 8: Disassembly And Reassembly

    DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron. H. V. Trans P-HVT Screws PRECAUTION Never touch any circuit wiring with your hand nor with an insulated tool during operation. 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 Door "E" Remove pin hinge from Door "E" Detach spring from Door "E" and key door. Key Door Spring Samsung Electronics...
  • Page 10: Replacement Of Fuse

    4. 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. Base Plate Drive Motor Cover 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

    Door Closed 5. Confirm that the gap between the switch housing and the switch actuator is no more than ¥ Primary switch 0.5mm when door is closed. ¥ Monitor switch (COM-NC) ¥ Door Sensing S/W ¥ 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 : 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 M633 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-16,50/60HZ 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 DE92-40170D ASSY DOOR BUTTON,WHT,M633/M643,WHT/BASIC DE93-30365B ASSY CONTROL-BOX M633(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 : Electrostatically Sensitive Devices : Option Parts : Warning...
  • Page 20 HSWR,PI0.6 DE64-10122A KNOB ABS,WHT,5G,G633C DE72-70165A CONTROL-PANEL ABS,180G,WHT,T2.5,107.5,261,M6 DE45-10074A TIMER-ASSY TMFK60MTA1,220/240V-50HZ,CMO-T 3501-000309 RELAY-POWER 240V,3750VA,15A,-,6mS,20mS TIMER DE93-30563A ASSY CONTROL-PANEL M633(SAW) 7-5 Assembly Body Latch Parts List Ref. No. Parts No. Description Specification Q'ty Remarks DE66-40001A LATCH-BODY POM(F20-02),40GR,NTR 3405-000178 SWITCH-MICRO 250V,15A,200gf,SPST-NO 3405-000175 SWITCH-MICRO...
  • Page 21: Standard Parts List

    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 DE60-10033A SCREW-TH TH,+,M4,L10,MSWR10,FEFZY P/RELY DE60-10069A SCREW-TAP TH TH,M4,L10,FRFZY TIMER Samsung Electronics...
  • Page 22: Wiring Diagrams

    BRN,WHT BLUE BLU,ORG BRN,WHT 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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