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Samsung M183STR Service Manual
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Samsung M183STR Service Manual

Samsung M183STR Service Manual

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MICROWAVE OVEN
M183STR
SERVICE
Manual
MICROWAVE OVEN
CONTENTS
8. PCB Diagrams
BWT

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Summary of Contents for Samsung M183STR

  • Page 1: Table Of Contents

    MICROWAVE OVEN M183STR 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 PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be (c) Before turning on microwave power operated with the door open. for any service test or inspection within (b) Make the following safety checks on the microwave generating all ovens to be serviced before activating...

  • Page 3: Precaution

    1. Precaution Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially lethal high voltages and currents. 1-1 Safety precautions ( 11.
  • Page 4 1-2 Special Servicing Precautions (Continued) 17. When checking the continuity of the witches or transformer, always make sure that the power is OFF, and one of the lead wires is disconnected. 18. Components that are critical for safety are indicated in the circuit diagram by shading, or .

  • Page 5: Specifications

    2. Specifications 2-1 Table of Specifications TIMER 99 MINUTES 90SECONDS POWER SOURCE 230V 50Hz POWER CONSUMPTION MICROWAVE : 1,250W OUTPUT POWER FROM 100W 850W ( 10 LEVEL POWER ) OPERATING FREQUENCY 2,450MHz MAGNETRON OM75SH(31)ESS COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 489 ×...

  • Page 6: Operating Instructions

    3. Operating Instructions 3-1 Control Panel 3-2 Features & External Views DOOR LATCHES VENTILATION HOLES LIGHT WINDOW DISPLAY HANDLE CONTROL PANEL TURNTABLE ROLLER RING DOOR SAFETY INTERLOCK HOLES COUPLER 180mm 355mm 489mm 400mm - 4 -...

  • Page 7: Disassembly And Reassembly

    4. Disassembly and Reassembly 4-1 Replacement of Magnetron, Motor Assembly and Lamp Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors (all of which are contained in one assembly). 1. Disconnect all lead wires from the magnetron and lamp. 2.
  • Page 8 4-3 Replacement of Door Assembly 4-3-1 Removal of Door "C" Insert flat screwdriver into the gap between Door "A" and Door "C" to remove Door "C". Be careful when handling Door "C" because it is fragile. Then remove the door assembly. Door "A"...
  • Page 9 4-3-4 Reassembly Test After replacement of the defective component parts of the door, reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage. 1. When mounting the door to the oven, be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment.
  • Page 10 4-6 Replacement of Control Circuit Board 4-6-1 Removal of Control Box 1. Be sure to ground any static electric charge in your body and never touch the control circuit. 2. Disconnect the connectors from the control circuit board. 3. Remove screws securing the control box assembly.

  • Page 11: Alignment And Adjustments

    5. Alignment and Adjustments PRECAUTION 1. High voltage is present at the high voltage terminals during any cook cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the high voltage capacitor.
  • Page 12 5-4 High Voltage Capacitor 1. Check continuity of the capacitor with the meter set at the highest resistance scale. 2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9M Ω . 3.
  • Page 13 5-8 Output Power of Magnetron CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. The output power of the magnetron can be measured by performing a water temperature rise test. Equipment needed : * Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm) * One glass thermometer with mercury column...
  • Page 14 5-10 Procedure for Measurement of Microwave Energy Leakage 1) Pour 275±15cc of 20±5° C(68±9° F) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven. 2) Start to operate the oven and measure the leakage by using a microwave energy survey meter.

  • Page 15: Troubleshooting

    6. Troubleshooting PRECAUTION 1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE. 2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT. 3. DISCHARGE THE HIGH VOLTAGE CAPACITOR. 4. WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER, DISCONNECT ONE LEAD WIRE FROM THESE PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON.
  • Page 16 6-1 Electrical Malfunction(continued) SYMPTOM CAUSE CORRECTIONS 1. Misadjustment or loose wiring Oven lamp and fan motor turn on of primary latch switch Adjust door and latch switches. 2. Defective Door Sensing(primary) latch switch Oven can program but timer 1. Open or loose wiring of Adjust door and interlock does not start.

  • Page 17: Exploded Views And Parts List

    7. Exploded Views and Parts List 7-1 Exploded Views D006 D049 D005 M001 D004 D003 D002 M019 M017 M015 M022 M020 D015 M029 D007 M023 D011 M157 D019 W002 M035 C082 B018 C005 M051 B001 C009 M036 B006 M049 B002 M037 C003 M038...
  • Page 18 7-2 Main Parts List Code No. Description Specification Q'ty Remark B001 3405-001034 SWITCH-MICRO 125/250VAC,16A,200GF,SPST-N B002 3405-001032 SWITCH-MICRO 125/250VAC,16A,200GF,SPDT B006 DE72-00137A LATCH-BODY NC2000(0.6/0.8/1.2),PP,-,-,-, B010 DE66-00093A LEVER-SWITCH(A) NC2000,PP-TH53,-,-,-,-,N B011 DE66-00094A LEVER-SWITCH(B) NC2000,PP-TH53,-,-,-,-,N B018 DE96-00120B ASSY BODY LATCH M1717N,NC2000(HANDLE) M001 DE70-00184Q PANEL-OUTER MW830BA,SECC,T0.5,-,-,-,BLK- M015 DE39-00224A ASSY POWER CORD...
  • Page 19 7-3 Control and Door Parts List Code No. Description Specification Q'ty Remark C003 RC-22LED-32 ASSY PCB PARTS M183STR/BWT,230V50HZ C004 DE34-00170H SWITCH MEMBRANE M183STR/BWT,SER,-,PET,-, C005 DE64-00626A CONTROL-PANEL MW888STB,ABS(HG0760SR),-,- C009 DE67-40179A WINDOW-DISPLAY -,SAN,T2.0,-,-,-,SMOG,- C082 DE94-00849G ASSY CONTROL-BOX 230V49HZ,M183STR/BWT,BL S.N.A D002 DE64-00625A DOOR-A...
  • Page 20 7-4 Standard Parts List Code No. Description Specification Q'ty Remark DE60-10080B SCREW-WASHER -,2S,SWRCH18A,ZP2,PH,PI5,-,L10,-,- DE60-10080B SCREW-WASHER -,2S,SWRCH18A,ZP2,PH,PI5,-,L10,-,- DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,- B-PLATE DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,- BD-LAT DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,- C/BLOWER DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,- C/BOX DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,- CV-AIR DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,- OUT-PA DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,-...
  • Page 21 8. P.C.B Diagrams 8-1 P.C.B Diagrams ( This Document can not be used without Samsung's authorization ) - 19 -...
  • Page 22 8-2 P.C.B Parts List Code No. Description Specification Q'ty Remark 3501-001155 RELAY-MINIATURE 24VDC,200MW,3000MA,1FORMA,10MS,10MS 3501-001188 RELAY-POWER 24V DC,0.53W,-,1FormA,9.3ms,10mS DE07-00023A LED DISPLAY CSQ-424AG,18MM,4DISP,-,-,45.2*22.38*22.0,- LED1 DE09-00051A IC MICOM KS57P0504,OTP,SOP,4BIT-32PIN,-,-,-,- IC01 DE26-00037A TRANS-L.V SLV-4290U,120V,60Hz,AC17V/7V,-,35*10,PIN,- LVT1 DE30-20016A BUZZER CBE2220BA,STICK,-,-,-,-,-,-,- BUZ1 DE92-00775A ASSY PCB AUTO 120V60HZ,LED,RA-MW880-00,MW880 0401-001083 DIODE-SWITCHING MM4148,100V,150MA,LL-34,TP...

  • Page 23: Schematic Diagrams

    9. Schematic Diagrams 9-1 Schematic Diagrams ( This Document can not be used without Samsung's authorization ) WARNING POWER MUST BE DISCONNECTED BEFORE SERVICING THIS APPLIANCE SECONDARY INTERLOCK S/W FUSE H. V. TRANSFORMER 120V15A 120V H.V.DIODE 120V 125V H. V. CAPACITOR...
  • Page 24 ELECTRONICS This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. © Samsung Electronics Co., Ltd. May 2003 Printed in Korea Code No. : DE68-03173A...
  • Page 25 Code DE64-00221B D005 M183STR/BWT Desc FILM-DOOR Spec -,-,T0.13,W264*L143,-,-,-,NC08 D006 D004 D005 W002 D003 D002 M001 M019 M017 M029 M022 M020 D015 M015 M023 D007 M157 D011 M051 D019 D049 M049 M035 C005 B006 B001 C082 M036 M038 M048 C009 M037...