Manuals / Sharp / Kitchen Appliance / Microwave Oven

Sharp service manual R-930AK R-930AW, SHARP CORP. 6K2.770E Printed in U.S.A

Models: R-930AW

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'97 SHARP CORP. (6K2.770E) Printed in U.S.A

R-930AK

R-930AW

'97 SHARP CORP. (6K2.770E) Printed in U.S.A

Page 44

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Sharp service manual R-930AK R-930AW, SHARP CORP. 6K2.770E Printed in U.S.A

Contents

TABLE OF CONTENTS SHARP ELECTRONICS CORPORATIONSERVICE MANUAL MODELS R-930AK R-930AWa Do not operate or allow the oven to be operated with the door open BEFORE SERVICING MICROWAVE MEASUREMENT PROCEDURE B. Preparation for testingA. Requirements C. Leakage testSERVICE MANUAL SHARP PLAZA, MAHWAH NEW JERSEYCONVECTION MICROWAVE OVEN R-930AK / R-930AW FOREWORD SHARP ELECTRONICS CORPORATIONSPECIFICATION GENERAL INFORMATIONDESCRIPTION GROUNDING INSTRUCTIONSOVEN DIAGRAM Interactive HELPTOUCH CONTROL PANEL ConvectionPOWER LEVEL P-0 TO P-90 COOKING OPERATIONDESCRIPTION OF OPERATING SEQUENCE OFF CONDITIONCONVECTION COOKING CONDITION AUTOMATIC MIX COOKING CONDITIONSENSOR COOKING CONDITION CONVECTION COOKING CONDITIONFIRE SENSING FEATURE MICROWAVE MODE COMPU BROIL/ COMPU ROAST/ COMPU BAKECOMPU DEFROST COOKING Cooking SequenceSCHEMATIC DIAGRAM Figure O-1. Oven Schematic-OFF ConditionFigure O-4. Oven Schematic-Convection Cooking Condition SCHEMATIC 1. DOOR CLOSED 2. MIX COOKING PAD TOUCHEDSCHEMATIC 1. DOOR CLOSED 2. CONVECTION PAD TOUCHED 3. COOKING TIME PROGRAMMED 4. “START” PAD TOUCHEDDOOR SENSING AND SECONDARY INTERLOCK SWITCHES OUTER CASE SWITCHESMONITOR SWITCH MAGNETRON TEMPERATURE FUSETROUBLESHOOTING GUIDE HEATING ELEMENTCONVECTION COOKING SYSTEM DAMPER OPEN-CLOSE MECHANISMPOSSIBLE CAUSE AND DEFECTIVE PARTS TEST PROCEDUREPROBLEM TEST PROCEDURES PROCEDUREA MAGNETRON ASSEMBLY TEST B POWER TRANSFORMER TESTTEST PROCEDURES PROCEDUREE SECONDARY INTERLOCK SWITCH TEST G MONITOR SWITCHTEST PROCEDURES PROCEDUREN DAMPER SWITCH TEST O CHECKING TEMPERATURE IN THE CONVECTION MODETEST PROCEDURES PROCEDUREP OUTER CASE SWITCH TEST Q TOUCH CONTROL PANEL ASSEMBLY TESTTEST PROCEDURES PROCEDURECOMPONENT TEST LETTERTEST PROCEDURES PROCEDURECOMPONENT TEST LETTERTEST PROCEDURES PROCEDURE TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNITLETTER COMPONENT TESTTOUCH CONTROL PANEL ASSEMBLY 2 Power Source Circuit3 Synchronizing Signal Circuit 6 Temperature Measurement Circuit OVEN THERMISTORDESCRIPTION OF LSI SignalPower source voltage Temperature measurement input OVEN THERMISTORsignal Damper motor relay driving signalHeating element driving signal Timing signal output terminal for temperature measurementOVEN THERMISSignal Signal similar to P27Signal similar to P27 Signal similar to P27ABSOLUTE HUMIDITY SENSOR CIRCUIT SignalSegment data signal Key strobe signalSERVICING 1 Servicing the touch control panel with power supply of the oven5. Other Precautions 2. Shapes of Electronic ComponentsCOMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE OUTER CASE SWITCHES REPLACEMENTPOWER TRANSFORMER REMOVAL OUTER CASE REMOVALHIGH VOLTAGE RECTIFIER ASSEMBLY REMOVAL POSITIVE LOCK CONNECTOR NO-CASE TYPE REMOVALMAGNETRON REMOVAL HIGH VOLTAGE CAPACITOR REMOVALDAMPER ASSEMBLY REMOVAL HEATER UNIT ASSEMBLY REMOVALTURNTABLE MOTOR REMOVAL HEATING ELEMENT/CONVECTION FAN/CONVECTION MOTOR/THERMISTORCONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVAL Do not hit the fan blade strongly when installedinstallation because the bracket may be disfiguredSWITCH DOOR REPLACEMENT AND ADJUSTMENTDOOR SENSING SWITCH MONITOR FUSE MONITOR SWITCH SECONDARY INTERLOCK Figure C-6. Door Disassembly DOOR DISASSEMBLYFigure C-5. Door Replacement and adjustment CONTROL PANEL Figure S-1. Pictorial DiagramHIGH VOLTAGE COMPONENTS Circuit Control PanelFigure S-2 IZA797DR IC1Figure S-3. Printed Wiring Board BLK POWERPARTS LIST ELECTRICAL PARTSCABINET PARTS CONTROL PANEL PARTSOVEN PARTS REF. NODESCRIPTION CODEDOOR PARTS MISCELLANEOUSSCREWS NUTS AND WASHERS REF. NOPACKING AND ACCESSORIES OVEN CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUSR-930AK R-930AW 97 SHARP CORP. 6K2.770E Printed in U.S.A