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Samsung ME1260SB Service Manual

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MICROWAVE OVEN
ME1260SB
SERVICE
Manual
MICROWAVE OVEN
CONTENTS
8. PCB Diagrams
SEA
SAM0016

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Summary of Contents for Samsung ME1260SB

  • Page 1: Table Of Contents

    MICROWAVE OVEN ME1260SB 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 SAM0016...
  • 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 ( 1.
  • 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, 19.

  • Page 5: Specifications

    2. Specifications 2-1 Table of Specifications TIMER 99 MINUTES 99SECONDS POWER SOURCE 120V 60Hz, AC POWER CONSUMPTION MICROWAVE : 1,550W OUTPUT POWER 1050W ( 10 LEVEL POWER ) OPERATING FREQUENCY 2,450MHz MAGNETRON OM75PH(31)ESS COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 19/32 45/64 (W) x 11...

  • Page 6: Operating Instructions

    3. Operating Instructions 3-1 Control Panel Clock Sets current time. One Minute+ Press once for every minute of Sound Button cooking at High Power Sets sound on or off. Instant Cook Buttons Instant settings to cook popular foods. Handy Helper, Kids Meals, Snack Bar Selects type of dish to be reheated.

  • 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 screw driver into the gap between Door Door "A" "A" and Door "C" to remove Door "C". Be careful when handling Door "C" because it is fragile. Then remove the door assembly. Door "C"...
  • 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. Screw 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 . 3. A shorted capacitor will show continuous continuity. 4.
  • 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 5-9 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 Oven lamp and fan motor turn on 1. Misadjustment or loose wiring Adjust door and latch switches. of secondary latch switch 2. Defective Secondary 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 MD06 MD05 MD11 MD04 MM01 MD03 MD02 MM52 MM07 MM55 MM17 MM34 MM17 MM06 MD07 MM03 MD10 MD01 MM10 MC01 MC03 MM13 MB01 MM16 MB03 MC06 MM08 MM22 MC07 MB05 MM102 MM09 MB02 MM14...
  • Page 18 DE97-00222A ASSY-GUIDE ROLLER NC-1.2CUFT,SPS(C832) B MM20 DE67-00106A COUPLER PPS,-,8g,BRN,MW1250WA,NC-1.2 MM22 DE31-10154A MOTOR SYNCHRONOUS M2HJ49ZR02,ST-16,50/60 MM27 DE61-40066A FOOT -,PP,-,BLK,-,-,- MM28 DE80-00024D BASE-PLATE ME1260SB/XAA,SGCC1,T0.6,ENAME MM29 2501-001015 C-OIL 1.0uF,2100V,BK,35X54X80,20mm MM30 DE61-50106A BRACKET-HVC -,SECC,T0.8,W31,L125.8,-,- MM31 DE59-40001A DIODE-H.V HVR-1X-32B-12,-,-,-,-,- MM34 DE47-40025A HOLDER-FUSE KFSN-L-16,15A,NYLON#66,5G,-, MM52 DE63-90035G...
  • Page 19 7-3 Control and Door Parts List Code No. Description Specification Q’ty Remark MC01 ASSY CONTROL-BOX -,ME1260SB(NC-12),SILVE S.N.A MC02 DE34-00125D SWITCH MEMBRANE ME1260SB/XAA,S2 LED-BAR MC03 DE72-70209H CONTROL-PANEL MW1060SA,ABS(VH0812),-,-,- MC04 DE61-70076A SPRING-BUTTON -,HSWR,PI0.6,PI0.6,-,-,-,- MC05 DE66-20281G BUTTON-PUSH MB7696S,ABS,-,-,SILVER,DOME MC06 DE67-40175A WINDOW-DISPLAY 5G,SAN,-,-,-,-,SMG,- MC07...
  • Page 20 7-4 Standard Parts List Code No. Description Specification Q’ty Remark DE60-10063A SCREW-TAP TH -,-,FEFN,-,TH,M4,-,L12,-,- O/PANEL DE60-10070A SCREW-TAP TH -,-,FEFZY,2-SLOT,TH,M4,-,L12,-,- B-PLTE DE60-10070A SCREW-TAP TH -,-,FEFZY,2-SLOT,TH,M4,-,L12,-,- CN-BOX DE60-10070A SCREW-TAP TH -,-,FEFZY,2-SLOT,TH,M4,-,L12,-,- CV/AIR DE60-10070A SCREW-TAP TH -,-,FEFZY,2-SLOT,TH,M4,-,L12,-,- CVT-TCO DE60-10070A SCREW-TAP TH -,-,FEFZY,2-SLOT,TH,M4,-,L12,-,- MO-FAN DE60-10070A SCREW-TAP TH -,-,FEFZY,2-SLOT,TH,M4,-,L12,-,-...
  • Page 21 8. P.C.B Diagrams 8-1 P.C.B Diagrams...
  • 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 RY01,04 3501-001188 RELAY-POWER 24V DC,0.53W,-,1FormA,9.3ms,10mS RY02 3708-001511 CONNECTOR-FPC/FC/PIC 16P,1.25mm,STRAIGHT,SN CN03 DE07-00004A V.F.DISPLAY SVM-07SS10L,3-RD,74.8*29.0*8.0MM,-,1/6.25,- VFD1 DE09-00071A IC MICOM TMP87PM74F,OTP-32K,QFP 8BIT-80PIN,-,-,-,- IC01 DE26-00037B TRANS-L.V SLV-5896U,120V,60Hz,AC18V/2.7V,-,35*10,PIN,- LVT1 DE30-20016A BUZZER CBE2220BA,STICK,-,-,-,-,-,-,- BUZ1 DE61-00005A HOLDER-DIGITRON...

  • Page 23: Schematic Diagrams

    9. Schematic Diagrams 9-1 Schematic Diagrams NOTE: CIRCUIT SHOWN WITH DOOR IS OPENED POSITION. WARNING NOTE: FOR SERVICE REPLACEMENT USE 16 GA 105° C POWER MUST BE DISCONNECTED THERMOPLASTIC COVERED WIRE EXCEPT BEFORE SERVICING THIS APPLIANCE FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS. MAGNETRON HIGH VOLTAGE DIODE...