Sears 721.67903600 Specifications

삼 흥정 판삼 흥정 판DIVISION 20BASIC FIELD MANUALFORMICROWAVE OVENMODEL 721.67902600721.67903600721.67909600JUNE, 2006MODEL 721.67902721.67903721.67909

SCHEMATIC DIAGRAM4-4SYMBOLBNWH BK BL YL PK RD GNBROWNWHITEBLACKBLUEYELLOWPINKREDGREENCOLORNOTE:1. DOOR IS OPENED.2. WIRE COLOR.

GENERAL DETAILS• The low voltage transformer supplies the necessaryvoltage to the micom controller when power cord isplugged in.• When the door is clo

NECESSARY TOOLSTools normally used for TV servicing are sufficient.Tools needed for service are listed below.• Diagonal pliers• Long nose pliers• Phil

MEASUREMENT WITH OUTER CASEREMOVED• When you replace the magnetron, measure formicrowave energy leakage around the door viewwindow, the exhaust openin

5-3A. OUTER CASE REMOVAL1) Disconnect the power supply cord from the outlet.2) Remove the screws from the rear of the case.The outer case must be move

D. P.C.B ASSEMBLY REMOVAL1) Remove the control panel assembly from the cavity.(Refer to control panel assembly removal onprevious page.)2) Remove scr

F. AIR DUCT ASSEMBLY / REMOVAL1) Disconnect the leadwires from the lamp, microswitch, damper motor, and damper switch.2) Remove the screws holding the

H. THE TURNTABLE MOTORREMOVAL1) Remove the turntable and rotating ring.2) Lay the unit on its back.3) Remove the turntable motor cover.The turntable b

M. C-MOTOR, THERMISTOR ANDSHEATH HEATER REMOVAL1) Remove the back cover by removing the four screwssecuring the cover assembly to the oven cavity.2) D

A. PRIMARY INTERLOCK SWITCH TESTWhen the door handle is depressed slowly withthe door closed, an audible click should be heardat the same time or succ

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

5-9COMPONENT TEST PROCEDURECAUTIONS1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THEOUTER CASE FROM THE UNIT. PROCEED WITH THE

5-10COMPONENTS TEST PROCEDURE RESULTSHIGH VOLTAGECAPACITORMeasure the resistance.(Ohm-meter scale: Rx10,000)• Terminal to terminal.Measure the resista

5-11COMPONENTS TEST PROCEDURE RESULTSH.V.Diode (RECTIFIER)STEP 1. Test the diode to see if it is shorted.Procedure:1. Select the ohm scale on the mete

5-12COMPONENTS TEST PROCEDURE RESULTSFUSE(Wire leads removed.)CONVECTION HEATER(Wire leads removed)MAGNETRONTHERMOSTATFAN MOTOR(Wire leads removed)Nor

5-13COMPONENTS TEST PROCEDURE RESULTSCIRCULATION MOTOR(Wire leads removed)TURNTABLE MOTOR(Wire leads removed)DAMPER MOTOR(Wire leads removed)THERMISTO

5-14TROUBLE SHOOTINGCAUTIONS1. Check grounding before checking for trouble.2. Be careful of the high voltage circuit.3. Discharge the high voltage cap

5-151. Incomplete segments.• Segment missing.• Partial segment missing.• Digit flickering (NOTE: Slight flickering is normal.)2. Colon does not turn o

5-16CONDITION CHECK RESULT CAUSE REMEDY1. Fuse blows. Continuity.No continuity.Continuity.Shorted contact atthe primary switch.Replace fuse,primary, m

5-17(TROUBLE 3) Display shows all figures set, but oven does not start cooking while desiredprogram times are set and START pad is touched.(TROUBLE 4)

5-18CONDITION CHECK RESULT CAUSE REMEDYNo microwaveoscillation.No continuity.Continuity.Defective P.C.BassemblyReplace P.C.BassemblyDisconnect thewire

CONTENTSMODEL 721.67902 721.67903 721.67909 (Page)SAFETY PRECAUTIONS ---------------------------------------------------------------------Inside front

5-19CONDITION CHECK RESULT CAUSE REMEDY(TROUBLE 6) Convection oven does not operate at all or convection cookis bad.Convection indicatorlight but oven

DOOR PARTS CONTROL PANEL PARTSBASE PARTSINTERIOR PARTSOVEN CAVITY PARTSLATCH BOARD PARTSEXPLODED VIEW6-1INTRODUCTIONMODEL 721.67902600721.67903600721

DOOR PARTS6-2100510041000138210071006W105101310081009100513811004100010071006W105101310081009#EV#For Model: 721.67902721.67909For Model: 721.67903

CONTROLLER PARTS6-32004200020022006W106238120042006W1062381#EV#For Model: 721.67902721.67909For Model: 721.67903

OVEN CAVITY PARTS6-43001W108W107W118W119W118W107304830023008W105300930123000W103For Model721.67903721.67909For Model721.67902#EV#

LATCH BOARD PARTS6-5W102400040014002400440034002W1174002W109W109W10550155006504550283049#EV#

INTERIOR PARTS6-6W102W101W101W10150145009W1095018W101500250005001W177W108540854055021W121501054015402541354063036W12154045041501250035007W146W123W182W

BASE PLATE PARTS6-76001500860006007W108W1016017#EV#

SENSOR PARTS6-8501150045016W108W104#EV#

P/NO : MFL06275102

SPECIFICATIONS1-1Rated Power Consumption ----------------------------------1500WOutput Microwave -----------------------------------------------------

CAUTIONS2-1• DO NOT operate on a 2-wire extension cord duringrepair and use.• NEVER TOUCH any oven components or wiring duringoperation.• BEFORE TOUCH

INSTALLATIONS3-1INSTALLING1. Empty the microwave oven and clean inside it witha soft, damp cloth. Check for damage such asmisaligned door, damage arou

OPERATING INSTRUCTIONS4-1FEATURESCONTROL PANEL Metal RackOven Front PlateWindow Door ScreenDoor SealSafety Interlock SystemControl PanelDisplay Window

4-2OPERATING SEQUENCEThe following is a description of component functionsduring oven operation.1. SETTING THE CLOCK2. START/PAUSE and CANCEL FUNCTION

4-3OPERATING SEQUENCE9. SENSOR TOUCH COOKING• Sensor cook and reheat• Sensor Popcorn 10. AUTO DEFROST11. EXPRESS DEFROST12. AUTO BAKE/ROAST13. CONVECT