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Samsung M1912 Service Manual

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SERVICE
MICROWAVE OVEN
AMFO
MICROWAVE OVEN
M1912
Manual
CONTENTS

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Summary of Contents for Samsung M1912

  • Page 1: Table Of Contents

    MICROWAVE OVEN M1912 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. Wiring Diagram AMFO...

  • Page 2: Precaution

    10. Service technicians should remove their 16. Always connect a test instrument's ground watches while repairing an MWO. lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics...
  • Page 3 PRECAUTION with the oven energized. DO NOT measure the voltage in the high voltage circuit Servicemen should remove their watches whenever including filament voltage of magnetron. working close to or replacing the magnetron. Samsung Electronics...

  • Page 4: Specifications

    2. Specifications 2-1 Table of Specifications M1912 POWER SOURCE 230V 50Hz POWER CONSUMPTION 1,400W OUTPUT POWER 100W/1000W (IEC-705) OPERATING FREQUENCY 2450MHz TIMER 35 MINUTES COOLING METHOD COOLING FAN MOTOR MAGNETRON OM75S(31) OUTSIDE DIMENSIONS 517(W) x 297(D) x 379(H)mm OVEN CAVITY DIMENSIONS...

  • Page 5: Operating Instructions

    3. Operating Instructions 3-1 Control Panel Defrost Instant Reheat Open Door Push Button Samsung Electronics...
  • Page 6 3. Set the time to 4 to 5 minutes by turing TIMER knob. Important: If any problem is experienced in the operation of the oven, please refer to the section on page 4 "what to do if you are in doubt or have a problem." Samsung Electronics...

  • Page 7: Variable Power Cooking Chart

    Operating Instruction 3-4 Variable Power Cooking Chart Operation: Set the COOKING POWER CONTROL knob OUTPUT POWER LEVEL to the appropriate power level by turning it. M1912 FULL 1000W HIGH 850W REHEAT 700W MEDIUM HIGH 600W MEDIUM 450W MEDIUM LOW 300W...

  • 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

    • Insertion depth of the thin metal plate should be 0.5mm or less. 4-3-3 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. 4. A continuity check between each filament terminal and the magnetron case should read "open". Magnetron 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 Beaker each beaker. 6. Microwave heat distribution rate can be caicviated as follows : Minimum Temperature Rise Heat Distribution = X 100(%) Cooking Tray Maximum Temperature Rise The result should exceed 65%. Samsung Electronics...
  • Page 14 ; CENTRAL SERVICE CENTER 5-11-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer. Samsung Electronics...

  • 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 DE80-10001F BASE-PLATE SGCC,T0.8,W345,L565,MW5896W DE63-90062B CUSHION-RUBBER DOOR RUBBER(CR),T12,W30,L50,HS60,M2 DE71-00015A COVER-CEILING T0.3,W114.2,L121.5,-,CE2933 DE94-00080C ASSY DOOR M1932,WHT,3RD,1.0,S-1 DE94-00153A ASSY CONTROL-BOX M1912/AMF,WHT,3RD 1.0,S-1 DE74-20015G TRAY-COOKING T6,PI318,1115G,MW5896W DE92-90189P ASSY-GUIDE ROLLER MW5896W DE67-60081A COUPLER PPS,-,-,-,3RD-1.0/1.3 3601-000448 FUSE-FERRULE 250V,10A,SB,CERAMIC,6.35X31.8MM 3601-001126 FUSE-FERRULE 250V,1.6A,FA,CERAMIC,5X20MM : Electrostatically Sensitive Devices...
  • Page 20 DE64-10172A KNOB ABS,-,WHT,PI52.5,3RD 1.0-S1 DE72-70222A CONTROL-PANEL ABS,WHT,-,-,3rd-1.0-S1 3501-000309 RELAY-POWER 240V,3750VA,15A,-,6mS,20mS DE45-00002A TIMER TMFK35M1A1,-,-,-,-,-,21V50HZ,CM0 DE94-00148A ASSY CONTROL-PANEL M1912/AMF,WHT,3RD 1.0,S-1 7-5 Assembly Body Latch Parts List Ref. No. Parts No. Description Specification Q'ty Remarks DE66-40001C LATCH-BODY PP(FB53WH),-,39.2G,NTR,-,3RD-W MW5592W 3405-001034 SWITCH-MICRO 125/250VAC,16A,200GF,SPST-NO 3405-001032...

  • Page 21: Standard Parts List

    2S-4X12,TOOTHED MO/FAN DE60-10082H SCREW-A 2S-4X12,TOOTHED PN/OUT DE60-10082H SCREW-A 2S-4X12,TOOTHED DE60-10098A SCREW-ASSY TAP TITE PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W M/DRV DE60-10069A SCREW-TAP TH TH,M4,L10,FRFZY RELAY DE60-10069A SCREW-TAP TH TH,M4,L10,FRFZY TIMER DE60-10072A SCREW-TAP TH TH,M4,L16,FEFZY,2-SLOT DE60-10098A SCREW-ASSY TAP TITE PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W DE60-10012A SCREW-TAP TITE TH,+,3,M4,L10,SWR10,ZPC2,TOOTH Samsung Electronics...

  • Page 22: Wiring Diagram

    MONITOR FUSE(1.6A) H. V. D RESISTOR SECONDARY TIMER S/W VPC S/W INRUSH RELAY SECONDARY MONITOR PRIMARY 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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