MICROWAVE OVEN MC1015WB MC1015BB SERVICE MICROWAVE OVEN Manual 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.
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 operated with the door open.
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. ) All repairs should be done in accordance with the procedures described in this manual. This product complies with Federal Performance Standard 21 CFR Subchapter J(DHHS). 11.
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 . 19. Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications.
2. Specifications 2-1 Table of Specifications TIMER 99 MINUTES 99SECONDS POWER SOURCE 120V 60Hz, AC POWER CONSUMPTION MICROWAVE : 1,500W CONVECTION : 1600W OUTPUT POWER FROM 100 TO 1000W(10 LEVEL POWER) (IEC-705 TEST PROCEDURE) OPERATING FREQUENCY 2,450MHz MAGNETRON OM75P(31) COOLING METHOD COOLING FAN MOTOR OUTSIDE DIMENSIONS 625(W) x 390(H) x 575(D)mm NET WEIGHT 26.0 kg SHIPPING WEIGHT 28.
3. Operating Instructions 3-1 Control Panel Clock Sets current time. Help Press to see help information about the feature you are using. One Minute+ Press once for every minute of cooking at High Power Instant Cook Buttons Instant settings to cook popular f oods. Auto Cook Press to select Auto cook and weight. Combo Press to cook oven automatically cycles between microwave and convection cooking. Preheat Press to preheat at desired temper ature. Conv.
4. Disassembly and Reassembly 4-1 Replacement of Magnetron, Motor Assembly and Lamp Cover Air 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. Remove the bracket mounting. 3. Remove the magnetron supporter. 4. Remove the air cover. 5. Remove screws securing the magnetron to the Magnetron wave guide. 6. Take out the magnetron very carefully. 7.
4-3 Replacement of Door Assembly 4-3-1 Removal of Door Assembly 4-3-4 Removal of Key Door &Spring securing the upper hinge and lower hinge. The remove door assembly. Remove pin hinge from Door "E" Datach spring from Door "E" and key door. Upper Hinge Door "E" Screws Low Hinge Key Door Screws Spring 4-3-2 Removal of Door "C" 4-3-5RemovalofScreen-Door&Deco-Door Insert flat screwdriver into the gap between Door "A" and Door "C" to remove Door "C".
4-3-6 Reassembly Test After replacement of 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. 2.
4-6 Replacement of Control Circuit Board 1. Be sure to disclyarge any static electricity from your body, and avoid touching the "touch control" circuitry. 2. Disconnect the connectors from the control circuit board. 3. Remove screws securing the control box assembly. 4. Lift up the control circuit board from right side and remove the hooks holding the control circuit board to the box assembly.
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. 5-1 High Voltage Transformer 1. Remove connectors from the transformer terminals and check continuity. 2.
5-4 High Voltage Capacitor 1. 2. 3. 4. 5. Check continuity of the capacitor with the meter set at the highest resistance scale. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9M . A shorted capacitor will show continuous continuity. An open capacitor will show constant 9M . Resistance between each terminal and chassis should read infinite. 5-5 High Voltage Diode 1. Isolate the diode from the circuit by disconnecting its leads. 2.
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 NOTE: Check line voltage under load. Low voltage will lower the magnetron output.
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. 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 perpendicular to the cabinet door.
6. Troubleshooting PRECAUTION 1. 2. 3. 4. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT. DISCHARGE THE HIGH VOLTAGE CAPACITOR. 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. TO DO OTHERWISE MAY RESULT IN A FALSE READING OR DAMAGE TO YOUR METER. 5. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT.
6-1 Electrical Malfunction(continued) SYMPTOM CAUSE Oven lamp and fan motor turn on 1. Misadjustment or loose wiring of primary latch switch 2. Defective primary latch switch Oven can program but timer does not start. 1. Open or loose wiring of secondary interlock switch 2. Off-alignment of primary interlock 3. Defective secondary interlock S/W Microwave output is low;. Oven takes longer time to cook food. 1. Decrease in power source voltage. 2. Open or loose wiring of magnetron filament circuit.
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7-2 Main Parts List S.N.A : SERVICE NOT AVAILABLE No. Code No. MB01 DE96-00120F ASSY BODY LATCH Description MW880BKA/XAA,HANDLE ALL1 Specification Q’ty 1 MB02 3405-001033 SWITCH-MICRO 125/250VAC,16A,200GF,SPST-N 1 MONITOR MB03 3405-001034 SWITCH-MICRO 125/250VAC,16A,200GF,SPST-N 2 DOOR,PRI MB041 DE66-00093A LEVER-SWITCH(A) NC2000,PP-TH53,-,-,-,-,N 1 MB042 DE66-00094A LEVER-SWITCH(B) NC2000,PP-TH53,-,-,-,-,N 1 MB05 DE72-00137A BODY-LATCH NC2000(0.6/0.8/1.
7-3 Door Parts List MD08 MD06 MD04 MD09 MD17 MD02 MD07 MD10 MD29 MD15 No. Code No. Description Specification MD02 DE64-40319A DOOR-A CK95,PC,-,-,-,-,WHT,- 1 MD04 DE94-00075H ASSY DOOR-E(SEALANT) C100,SEALANT,3RD-1. 1 MD06 DE64-40012C DOOR-C CK95,PBT,-,-,-,-,BLK,- 1 MD07 DE61-00199A SPRING-KEY M1977,HSWR,D6,-,-,25 1/4,25 1 1 MD08 DE61-80002A HINGE-UPPER WHT,SHV-745CC1,SSEC,T2.3,26, 1 MD09 DE61-80003A HINGE-LOWER WHT,TN-5630T,SSEC,T2.
7-4 Control Parts List MC03 MC06 MC02 MC07 No. Code No.
7-5 Casing Parts List MA01 MA03 MA02 MA09 MA07 MA02 MA05 MA06 MA04 MA08 No. Code No. Description Specification MA01 DE31-10171B MOTOR-CONVECTION SHC-5694UA,120V60HZ,-,3 1 MA02 DE31-90019A BLADE-FAN SECC,T0.6,-,-,-,-,- 1 MA02 DE31-90020A BLADE-FAN ALSTAR,T0.6,W250,L250,-,-,- 1 MA03 DE47-70077C HEATER SHC-5694U1,-,-,1580W,-,120V,-,-,- 1 MA04 DE60-40026B WASHER-PLAIN ID5.5,OD12,T1.0,SBC1,ZNC3,- 1 MA05 DE62-00098B ADIABATIC-CASING -,T8,W245,L336.
7-6 Standard Parts List Code No. Description Specification Q’ty Remark DE60-20063A BOLT-FLANGE M4,10,ZPC3,YEL,MSWR,-,-,-,- 4 HING-L/U DE60-30016A NUT-FLANGE M4,MSWR10,-,-,-,-,-,-,- 1 SENSOR DE60-30016B NUT-FLANGE M4,MSWR10,FEFN,-,-,-,-,-,- 3 DE60-10082H SCREW-A -,-,-,-,2S-4X12,TOOTHED,-,-,-,- 5 P-OUTER DE60-10018A SCREW-ASSY MACHINE -,WS,MSWR10,SN1,PH,M4X0.
8. P.C.B Diagrams 8-1 P.C.
8-2 P.C.B Parts List Code No. Description Specification Q’ty Remark 3501-001015 RELAY-POWER 24V,21.8mA,16A,1FormA,20mS,10m 2 RY3,RY5 3501-001050 RELAY-MINIATURE 24VDC,200mW,5A,1FormA,10mS,5mS 3 RY1,RY2,RY4 3708-000528 CONNECTOR-FPC/FFC/PIC 13P,2.54mm,STRAIGHT,SN 1 CN3 DE07-10035A VF DISPLAY SVM-07SS10,SEA,-,-,- 1 DSP1 DE09-30708A IC MICOM M38127ECSP,OTP,3RD MODEL,8BIT, 1 IC1 DE26-20144A TRANS-L.V SLV-5574U,120V,60HZ,AC17V/2.
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