Sears 721.66339 Specifications

삼 흥정 판DIVISION 20BASIC FIELD MANUALFORMICROWAVE OVENMODEL 721.66339800February, 2008MODEL 721.66339

Figure 5-9-7. OPERATING PROCEDURESA. OVEN CONTROL PANEL1. DISPLAY. The display includes a clock and indicators that tell youtime of day, cooking time

B. EASY USE TABLE(1) KITCHEN TIMER1. Touch STOP/CLEAR.2. Touch KITCHEN TIMER.3. Touch correct number for time.4. Touch START.(2) CHILD LOCKTo set:1

8. PROCEDURE FOR MEASURING MICROWAVEENERGY LEAKAGEA. CAUTIONS(1) Be sure to check a microwave emission prior to servicingthe oven if the oven is ope

D. MEASUREMENT WITH A FULLY ASSEMBLED OVEN(1) After all components, including the outer panels, arefully assembled, measure for microwave energyleak

-13-9. DISASSEMBLY INSTRUCTIONSIMPORTANT NOTES:UNIT MUST BE DISCONNECTED FROM ELECTRICALOUTLET WHEN MAKING REPAIRS, RE-PLACEMENTS,ADJUSTMENTS AND C

C. DOOR ASSEMBLY / REMOVAL (1) Open the door.(2) Remove the choke cover very carefully with a flat-bladescrewdriver.CAUTION : Be careful not to damag

D. MAGNETRON REMOVAL(1) Disconnect the wire lead from the magnetron.(2) Carefully remove the mounting screws holding themagnetron and the waveguide.(

F. HIGH VOLTAGE TRANSFORMER REMOVAL1) Discharge the high voltage capacitor.2) Disconnect the leadwire from magnetron, high voltagetransformer, and ca

J. INTERLOCK SYSTEM1) INTERLOCK MECHANISMThe door lock mechanism is a device which has beenspecially designed to eliminate microwaveactivity when the

-18-A. PRIMARY INTERLOCK SWITCH TESTWhen the door release button is depressed slowly withthe door closed, an audible click should be heard atthe same

CAUTIONWARNING TO SERVICE TECHNICIANSPRECAUTIONS TO BE OBSERVED BEFOREAND DURING SERVICING TO AVOIDPOSSIBLE EXPOSURE TO EXCESSIVEMICROWAVE ENERGYa. Do

-19-CAUTIONS1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASEFROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHA

-20-COMPONENTS TEST PROCEDURE RESULTSHIGH VOLTAGECAPACITORHIGH VOLTAGEDIODENOTE :Some inexpensive metersmay indicate infiniteresistance in both direct

-21-COMPONENTS TEST PROCEDURE RESULTSRELAY 2FAN MOTOR(Wire leads removed)TURNTABLEMOTOR(Wire leads removed)SENSORCheck for continuity of relay 2 with

-22-B. CHECKOUT PROCEDURES(1) CHECKOUT PROCEDURES FOR FUSE BLOWINGCAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE.Fuse blows immediately afterthe do

-23-(2) CHECKOUT PROCEDURES FOR RELAY - PROBLEM (A) -FAN motor and oven lamp turn on without touchingSTART key when the door is closed.Remove the mat

-24-NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT ISSERVICED FOR ANY REASON.(3) CHECKOUT PROCEDURES FOR CIRCUIT BOARD

-25-C. TROUBLE SHOOTINGWHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF THEFOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT

-26-1. Incomplete segments.• Segment missing.• Partial segment missing.• Digit flickering (NOTE: Slight flickering is normal.)2. Colon does not turn o

-27-CONDITION CHECK RESULT CAUSE REMEDY1. Fuse blows. Continuity.No continuity.Continuity.Shorted contact atthe primary switch.Replace fuse,primary, m

-28-CONDITION CHECK RESULT CAUSE REMEDY1. Setting timedoes not countdown whentouching STARTpad.2. Fan motor oroven lamp donot turn on.No continuity.Co

TABLE OF CONTENTS1. Adjustment Procedures ------------------------------------------------------------------------------------------------------------

-29-CONDITION CHECK RESULT CAUSE REMEDYNo microwaveoscillation.No continuity.Continuity.AbnormalDefective highvoltagetransformer.Replace highvoltagetr

EXPLODED VIEWINTRODUCTION-30-DOORCONTROL PANELBASE PLATEOUTER CASELATCH BOARDINTERIORSENSOR #EV#

-31-DOOR PARTS100410001005100710061002101310031001#EV#

-32-CONTROLLER PARTS200020022006W10620042381#EV#

-33-OVEN CAVITY PARTS3002W107W1033001300330083009W1053034#EV#

-34-LATCH BOARD PARTSW102400240034002400440004001#EV#

#EV#50145016501050035012W109W208W101W10950073006W101W11050095006W101501590005000500230075018W109W10150015041W208-35-INTERIOR PARTS

-36-BASE PLATE PARTS5008W101W108600060076001#EV#

-37-SENSOR PARTSW13650115004W108#EV#

P/NO: MFL30502909 Printed in Korea

-3-1. ADJUSTMENT PROCEDURESTo avoid possible exposure to microwave energyleakage, adjust the door latches and interlock switches,using the following

-4-LATCHLATCH BOARD0-1/64"0-1/64"LATCH BOARDMONITORINTERLOCKSWITCHPRIMARYINTERLOCKSWITCHASECONDARYINTERLOCKSWITCHFigure 1-aFigure 1-bDOOR LA

2. PRECAUTIONS ON INSTALLATION(Figure 2)A. Plug the power supply cord into a 120 V AC, 60 Hz,single-phase power source with a capacity of at least

SPECIFICATIONSRated Power Consumption ...1650W maximum Output...

IMPORTANT SAFETY NOTE: THE SHADED AREAS ON THIS SCHEMATIC DIAGRAM INCORPORATE SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM MICROWAVE RA

B. MATRIX CIRCUIT FOR TOUCH KEY BOARD-8-Figure 4