Related Manuals for Danby DMW769W
Summary of Contents for Danby DMW769W
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Page 1: Table Of Contents
MICROWAVE OVEN DMW769W / DMW769BL DMW769W-1 / DMW769BL-1 SERVICE Manual CONTENTS MICROWAVE OVEN 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: 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 3: Special High Voltage Precautions
Pretaution 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 4: Specifications
2. Specifications 2-1 Table of Specifications MODEL DMW769W / DMW769BL / DMW769W-1 / DMW769BL-1 ITEM TIMER 99 MINUTES 99 SECONDS POWER SOURCE 120V/60HZ, AC POWER CONSUMPTION MICROWAVE : 1,100W OUTPUT POWER FROM70 TO 700W (10 LEVEL POWER) (IEC-705 TEST PROCEDURE) -
Page 5: Operating Instructions
Press once for every minute of cooking at High power. Instant Cook Buttons Instant setting to cook popular foods. Auto Defrost (DMW769W-1/DMW769BL-1) Time Defrost Auto Reheat (DMW769W/DMW769BL) Sets weight of food be defrosted. Sets type of dish to be reheated. -
Page 6: Disassembly And Reassembly
4. Disassembly and Reassembly 4-1 Replacement of Magnetron, Motor Assembly and Lamp Remove the magnetron including the shield case, Lamp Thermo S/W Cover Air permanent magnet, choke coils and capacitors (all of which are contained in one assembly). 1. Disconnect all lead wires from the magnetron and lamp. - Page 7 Disassembly and Reassembly 4-3 Replacement of Door Assembly 4-3-1 Removal of Door "C" Insert flat screwdriver 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.
- Page 8 Disassembly and Reassembly 4-3-5 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 9 Disassembly and Reassembly 4-6 Replacement of Control Circuit Board 4-6-1 Removal of Control Box Assembly 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.
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Page 10: 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 11: High Voltage Capacitor
Alignment and Adjustments 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 9MW. 3. - Page 12 Alignment and Adjustments 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...
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Page 13: Procedure For Measurement Of Microwave Energy Leakage
Alignment and Adjustments 5-9 Procedure for Measurement of Microwave Energy Leakage 1) Pour 275±15cc of 20±5ûC(68±9ûF) 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 14: 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 15 Troubleshooting 6-2 Electrical Mulifunction(continued) SYMPTOM CAUSE CORRECTIONS Oven lamp and fan motor turn on 1. Misadjustment or loose wiring Adjust door and latch switches. of primary latch switch 2. Defective primary latch switch Oven can program but timer 1. Open or loose wiring of secondary Adjust door and interlock switches.
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Page 16: Exploded Views And Parts List
7. Exploded Views and Parts List 7-1 Exploded Views... -
Page 17: Main Parts List
ASSY NOISE FILTER;SN-320UA,120V60HZ,JE320WAC 3601-000439 FUSE-FERRULE;250V,15A,TL,CERAMIC,6.35x31.8m DE91-50100A ASSY MOTOR-FAN;SMF-3RDUA,120V60Hz,-,MW4592W DE39-00050A WIRE HARNESS-A;120V60HZ,-,-,DMW769W/BL DE47-20008A THERMOSTAT;PW2N-52JC,100/60,250V/7.5A,H,1 BK-MGT DE03-30029A MAGNETRON;OM75SH(31)ESS 4713-001012 LAMP-INCANDESCENT;130V,-,40W,ORG,B/L,-,25X71 DE71-60457A COVER-AIR;PP,T1.7,W115.5,L150,WHT,3RD-W0 DE96-00005B ASSY BODY LATCH;DMW769W,3RD,WONWOO,PP(FB53WH) DE66-90113A LEVER-DOOR;PP(TB53-GH10),T2.5,W31X100.5,-,12G,NTR,3RD-W DE26-10156A TRANS-H.V;SHV-4593UC,120V,2015V/3.10V,60 2501-001018 C-OIL;800nF,2100V,BK,35X54X70,20mm DE61-50106A BRACKET-HVC;SECC,T0.8,W31,L125.8 DE59-40001A DIODE-H.V;HVR-1X-32B-12 DE74-20102B TRAY-COOKING;GLASS,T5.0,PI288,780G,M745 DE92-90436C ASSY-GUIDE ROLLER;MW4370W,D16.5,XAREX DE67-60075A COUPLER;PPS,7G,BRN,M97G45 DE61-40017A FOOT;PP(A353),BLK,MW5630T... -
Page 18: Door Parts List
DE64-40008B DOOR-C;PP,T1.5,BLK,CE745G DE01-00112A FILM-DOOR;PET,T0.15,W150,L268,NTR,3RD-W 7-4 Control Parts List Ref. No. Parts No. Description/Specification Q'ty Remarks DE66-00002A BUTTON-PUSH;ABS DE61-70076A SPRING-BUTTON;HSWR,PI0.6 DE34-00019A SWITCH-MEMBRANE;PET ,DMW769W,120V60HZ,DANBY DMW769W/-1 DE34-00019B SWITCH-MEMBRANE;PET ,DMW769BL,120V60HZ DMW769BL/-1 DE72-00005A CONTROL-PANEL;DANBY07,T2,-,-,-,P/WHT,- DMW769W/-1 DE72-00005B CONTROL-PANEL;ABS(HR0370D),DMW769BL,BLK DMW769BL/-1 DE97-00048A ASSY PCB-MAIN;RA-W3LCD2-03,DMW109W DE94-00133A ASSY CONTROL-PANEL;120V60HZ,DMW769W,P/WHT,DANBY DMW769W/-1 DE94-00133B ASSY CONTROL-PANEL;120V60HZ,DMW769BL,BLK,DANBY... -
Page 19: Standard Parts List
Exploded Views and Parts List 7-6 Standard Parts List Parts No. Description / Specification Q'ty Remarks DE60-10080A SCREW-WASHER;M5,L12,2S DE60-10080A SCREW-WASHER;M5,L12,2S 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 CON-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 P/CORD DE60-10082H SCREW-A;2S-4X12,TOOTHED PCB-GND DE60-10098A SCREW-ASSY TAP TITE;PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W... - Page 20 8. P.C.B Diagrams 8-1 P.C.B Diagrams...
- Page 21 P.C.B Diagrams 8-2 P.C.B Parts List Parts No. Description / Specification Q'ty Remarks DE09-00015A IC-MCU;TMP87CH21DF-2433,DMW796W,8BIT 0401-001002 DIODE-SWITCHING;1N4148M,100V,200mA,DO-34,TP D06,D07,D08,D09 0402-001103 DIODE-RECTIFIER;1T4,400V,1A,TS-1,TP D01,D02,D04 0403-000355 DIODE-ZENER;UZ5.1BSB,5.1V,4.97-5.18V,500mW ZD01,ZD02 0501-000388 TR-SMALL SIGNAL;KSC815,NPN,400mW,TO-92,BK,120- TR01 0504-001014 TR-DIGITAL;KSR1005,NPN,300mW,4.7K-10K,TO- TR02,TR05,TR06,TR07 0504-001015 TR-DIGITAL;KSR2005,PNP,300mW,4.7K-10K,TO- TR08,TR13 1405-000001 VARISTOR;470V,2500A,14x8.5mm,TP ZNR1 2001-000027 R-CARBON;100OHM,5%,1/4W,AA,TP 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP R08,R10,R14,R28 2001-000429...
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Page 22: Schematic Diagrams
9. Schematic Diagrams 9-1 Schematic Diagrams PRIMARY S/W ASSY CHOKE P.C.B H. V. TRANS H. V. DIODE 130V 120V 120V POWER CORD H. V. CAPACITOR AC 120V/60Hz MONITOR SWITCH MAGNETRON SECONDARY INTERLOCK POWER RELAY SWITCH (SECONDARY INTERLOCK) WHT : WHITE 1.