Sears 721.85064 Specifications

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Summary of Contents

Page 1 - April, 2010

삼 흥정 판DIVISION 22BASIC FIELD MANUALFORMICROWAVE OVENMODEL 721.85062010721.85063010721.85064010721.85069010April, 2010MODEL 721.85062721.85063721.8506

Page 2 - TO EXCESSIVE MICROWAVE ENERGY

-10-5-2. Key Matrix11234567856789101112913014234CUSTOMSETVENTHi / Low / OFF(Vent On / Off)TURBO(Vent Speed)SENSORVEGGLESSENSORCOOKSENSORReheatSTOP CLE

Page 3 - CONTENTS

6. TROUBLESHOOTING -11-6-1. General Information for ServiceGENERAL PRECAUTIONS IN USEA. Never operate the unit when it is empty.Operating the oven wit

Page 4 - 1. SPECIFICATIONS

-12-A. SINCE NEARLY 4,000 VOLTS EXISTS INSOME CIRCUITS OF THIS UNIT REPAIRSSHOULD BECARRIED OUT WITH GREATCARE.The filament leads of magnetron carry H

Page 5 - 2. CAUTIONS

-13-6-3. Basic Check Summary120 V AcBK-LWH-NSymptom : DeadCheck : Open/Short120V AcBK-CN1-3WH-CN1-5Symptom: DeadCheck : Open/Short(It is normally reco

Page 6 - 3. INSTALLATION

-14-6-4. TroubleshootingNo Display or Dead

Page 7 - 4. OPERATION

3-15-1When you push the any key,is there any beep soundDoes the display operate?NoNoYes2Is the connector connectedto PCB?Power OffOven ThermostatMagne

Page 8

-16-6Is there any beep sound incontinuity test between theends of noise filter?Neutral terminal of Noise filterLive terminal of Noise filterNoNoReconn

Page 9 - 5-1. Wiring Diagram

-17-Keypad FailureMICOM• Start key or EZ-ON key works if the door is closed.

Page 10 - 5-2. Key Matrix

-18-1Do not only START key andEZ-ON key operate? Doorshould be closed?Does the keys operate?NoYesNo2Is there beep sound incontinuity test between thee

Page 11 - 6. TROUBLESHOOTING

-19-No Heat / No Cook

Page 12 - 6-2. Safety Caution

-2-CAUTIONWARNING TO SERVICE TECHNICIANSPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLE EXPOSURETO EXCESSIVE MICROWAVE ENERGYa

Page 13 - 6-3. Basic Check Summary

3-20-41Repeat door open and closemore than three times.Does product operate?After power on, does theproduct operate?NoNoYes2Is there any beep sound in

Page 14 - 6-4. Troubleshooting

-21-5Is there any beep soundin continuity test betweenthe ends of latch board?- primary switch(Door should be closed.)Power OffYesNoAdjust latchboard(

Page 15

-22-9Is the resistance of the highvoltage capacitor out ofrage?(Refer to 10)Test PointNoYesReplace thehigh voltagecapacitor.8Is the connector connecte

Page 16

1-23-Turntable Motor Does Not Work2Does the Fan Motor turn onwhen the EZ-On button ispressed?Does the turntable motoroperate?NoNoYes3When door is clos

Page 17 - Keypad Failure

-24-Turn on automatically1Repeat Door Open and closemore than three times.Dose the product operate?Is the product turn onautomatically without pushing

Page 18

-25-7. MICROWAVE LEAKAGE TEST CAUTIONS• Be sure to check microwave leakage prior toservicing the oven if the oven is operative prior toservicing.• The

Page 19 - No Heat / No Cook

-26-MEASUREMENT WITH THE OUTERCASE REMOVED(1) When you replace the magnetron, measure formicrowave energy leakage before the outer caseis installed a

Page 20

-27-8. POWER OUTPUT MEASUREMENT (1) Microwave power output measurement is madewith the microwave oven supplied at its ratedvoltage and operated at it

Page 21

-28-9. INTERLOCK SYSTEM 9-1. Interlock MechanismThe door lock mechanism is a device which has been specially designed to eliminate completely microwav

Page 22

-29-TEST THE LATCH AND SWITCH SEQUENCE(5) Open the oven door slowly. Watch the door latch,the Secondary Switch. Release Rod and Leveron the switches

Page 23 - Turntable Motor Does Not Work

-3-FOREWORDRead this Manual carefully. Failure to adhere to or observe the information in this Manual may result in exposingyourself to the Microwave

Page 24 - Turn on automatically

-30-9-2. Interlock Continuity TestA. PRIMARY INTERLOCK SWITCH TESTWhen the door is opened slowly,an audible clickshould be heard at the same time or s

Page 25 - 7. MICROWAVE LEAKAGE TEST

-31-10. COMPONENT TESTING INFORMATION CAUTIONS1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASEFROM THE UNIT. PROCE

Page 26

-32-COMPONENTS TEST RESULTSNormal:Approximately4 .7-6.4VNormal:Approximately 0VSTEP 1. Test the diode to see if it is shorted.Procedure:1. Select the

Page 27 - 8. POWER OUTPUT MEASUREMENT

-33-COMPONENTS TEST RESULTSNormal:ApproximatelyTurbo speed: 20 to 30 ohmsHigh speed: 40 to 50 ohmsLow speed: 45 to 55 ohms1. Remove wire leads. Instal

Page 28 - 9. INTERLOCK SYSTEM

-34-COMPONENTS TEST RESULTSMeasure the resistance between terminalpins of connector KEY CONNECTOR.NOTE:When reconnecting the FPC connector,make sure t

Page 29

11. DISASSEMBLY INSTRUCTIONS-35-IMPORTANT NOTES:UNIT MUST BE DISCONNECTED FROM ELEC-TRICAL OUTLET WHEN MAKING REPAIRS, RE-PLACEMENTS, ADJUSTMENTS AND

Page 30

-36-HOW TO REMOVE THE F.P.C. CONNECTORFollow the steps below as illustrated in Figures 4and 5 to remove the F.P.C. connector.(1) Hold the edges of th

Page 31

-37-B. REMOVING THE OUT CASE(Figure 8)(1) Remove the vent grille by removing two screwssecuring it to the outer case.(2) Remove two screws securing

Page 32

-38-C REMOVING THE DOOR INTERLOCKSWITCHES (Figures 9,10)(1) Disconnect the wire leads from the interlockswitches.(2) Remove two screws securing the

Page 33

-39-D. REMOVING MAGNETRON(Figures 11 Through 12)(1) Remove the vent grille by loosening two screws.(Figure 11)(2) Remove the outcase. See page 7-6.

Page 34

-4-1. SPECIFICATIONSRated Power Consumption ...1700W maximum(Microwave oven+Cook top lamps+Ventilation fan)Microwave Out

Page 35 - 11. DISASSEMBLY INSTRUCTIONS

-40-F. REMOVING DOOR (Figure 15)(1) Remove the vent grille by two screws securing itto the outcase loosening.(2) Lift up and draw the door.NOTES:•

Page 36

-41-(3) Carefully pull the ventilation motor assembly out ofthe microwave oven. (See Figure 18-b)J. REMOVING THE TURNTABLE MOTOR(1) Remove the glass t

Page 37

-42-K. REPLACING THE HUMIDITY SENSOR(1) Remove the sensor by removing two screws infront of the lamp cover & removing one screwsecuring it to the

Page 38 - SYMBOL COLOR

12. EXPLODED VIEW-43-DOOR PARTS (I)10051003100210001004100610071009W136W3011008#EV#FOR MODELS

Page 39 - Fan Backet

-45-CONTROLLER PARTS (I)CONTROLLER PARTS (I)200420082006W130MBM2238120002002#EV#FOR MODELS

Page 40 - H. ASSEMBLING DOOR

-47-OVEN CAVITY PARTS3031306130103036302430483001W109W109For ModelFor Model721.85069721.85063721.85064721.85062W142W138W142W138W142W13850633034 W26160

Page 41

-48-W102400040024003400140044002LATCH BOARD PARTS#EV#

Page 42

-49-INTERIOR PARTS (I)W109W109W109W109W105W109W265W101W110300830123002W101W140W24850245058504350443004500050185049506950075216541250105073501250415001

Page 43 - 12. EXPLODED VIEW

-50-INTERIOR PARTS (II)30275117501154605006503730475014W109W109W109W10751175074520650155038#EV#

Page 44 - FOR MODELS

#EV#INSTALLATION PARTSUSE & CARE6009MFL1 MEZ1COOKING GUIDE LABELMFL3INSTALLATIONMANUALMBM4UPPERTEMPLATE MBM5WALLTEMPLATE 600860106011-51-

Page 45 - OVEN CAVITY PARTS

-5-2. CAUTIONSUnlike other appliances,the microwave oven ishigh-voltage and high-current equipment.Though it is free from danger in ordinary use,extre

Page 46 - LATCH BOARD PARTS

Printed in KoreaP/NO : MFL57016013

Page 47 - INTERIOR PARTS (I)

-6-3. INSTALLATIONBEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.PRECAUTIONS ON INSTALLATIONA. Plug the power supply cord

Page 48 - INTERIOR PARTS (II)

-7-4. OPERATIONControl Panel Features24318 69121619201413 5710111518172221

Page 49 - INSTALLATION PARTS

-8-4-2. Explanation of Control PanelNOTE: Styling and features vary by model.1. DISPLAY The display includes a clock and indicators to tellyou time o

Page 50 - P/NO : MFL57016013

5. WIRING DIAGRAM / KEY MATRIX -9-5-1. Wiring Diagram

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