Sharp

SERVICE MANUAL

S9706R8580J//

CONVECTION

MICROWAVE OVEN

					TAME OF	CONTENTS
							Page
PRECAUTIONS			..........................................................................................................			INSIDE	FRONT COVER
FOREWORD							I
THUMB	INDEX						I
PRODUCT		DESCRlPTlON					2
OPERATION							4
SERVlClNG		.....................................................................................................................................................					11
TOUCH	CONTROL			PANEL ASSEMBLY			22
COMPONENT			REPLACEMENT		AND ADJUSTMENT	PROCEDURE	30
MICROWAVE			MEASUREMENT		PROCEDURE		35
PICTORIAL		DIAGRAM					36
CONTROL		PANEL		CiRCUlT			37
PRlNTED		WIRING		BOARD			38
PARTS	LIST						39
PACKING		AND	ACCESSORIES		...................................................................................................................		47

SHARPCORPORATION

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Contents

Sharp Sharpcorporatkn OSAKA, Japan Microwave RadiationConvection Microwave Oven 8580 Product Description Specification Auto-TouchTM Control Panel Description of Operating Sequence OperationOFF Condition Cooking Condition Automatic MIX Cooking Condition Convection Cooking ConditionPreheating Condition Convection Cooking Condition Compu Cook Sensor Cooking ConditionEasy Defrost Cooking Cooking Sequence 240V-50Hz G-4 Figure O-l. Oven Schematic-OFF Condition Figure O-3. Oven Schematic-Convection Cooking Condition Description and Function of Components Convection Cooking System Convection HeaterDamper OPEN-CLOSE Mechanism Servicing Problem Possible Cause Test Procedure CorrectionOFF Condjtion Problem Possible Cause Test Procedure or Correction Nents Defective Convection Heater Procedure RelayRY4 Unit Microwave Output Power Test Procedures Letter Component Magnetron Assembly Test Power Transformer Test Procedure Letter Test Procedures CONT’D Component TestSwitch Test High Voltage Rectifier and Rectifier Test Blown Fuse Test Procedures CONT’D Letter Component Monitor Switch TestTEMP. Fuse Test Thermal CUT-OUT Damper Switch Test Procedure LetterThermistor Test Damper Motor Test Relay Symbol Operational Connected Components Voltage Test Procedures CONT’O Letter Component Relay Unit KEY Unit Test Checking the initial sensor cooking condition Testing Method for AH Sensor AND/OR Control UnitWater load cooking test Steps Occurance Cause or Correction Sensor Dummy Resistor Circuit Outline of Touch Control Panel Touch Control Panel AssemblyLSI LSI IZA096DR Description of LSJ Seqment Data Siqnal Seqment Data signalKev strobe siqnal Internal clock oscillation frequency input settinq Signal svnchronized with commercial source frequencv50Hz Signal to SoundPower source voltage Magnetron High-voltaae Circuit driving Signal Input signal which communicates the door open/close Damper motor relav driving signalSignal cominq from touch kev Signal coming from touch key Sensor Inuut Temperature measurement input Oven ThermistorRI4 Terminal For Manufacture Test Sensor Circuit Absolute Humidity Servicing Other PrecautionsShapes of Electronic Components Servicing of Touch Control Panel Power Transformer Removal Component Replacement and Adjustment ProcedureHigh Voltage Capacitor Removal Turntable Motor AND/OR Coupling Removal Convection Motor Removal Magnetron RemovalCooling FAN Motor Removal Lower Latch Switch and Stop Switch Removal Upper Latch Switch / Monitor Switch RemovalDamper Removal CPU Unit and KEY Unit Control Panel Assembly and CPU Unit Removal Door Replacement Door Replacement and AdjustmentDoor Adjustment Microwave Measurement Preparation for TestingRequirement 11II II II II OIL 8580 II I Figure S-3. Printed Wiring Board AY AK AF AH Parts List RR-DZ561PDREO Q8L AT AH FOVN-A090WRYO AG AD 11 AA 13 AA Ii AA Replacement Parts List 8580 ‘Y \‘\ Control Panel Parts Door Assembly Miscellaneous Packing and Accessories 8580 8580 Sharp

Sharp r-8580 manual Sharp

Models: r-8580

SHARP

CONVECTION

MICROWAVE OVEN

TAME OF

CONTENTS