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Sharp R-2397 service manual

Models: R-2397

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R-2397

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Contents

COMMERCIAL MICROWAVE OVEN MODEL R-2397 TABLE OF CONTENTSSHARP CORPORATION R-2397 MICROWAVE RADIATION SHARP CORPORATION OSAKA, JAPANCOMMERCIAL R-2397 GENERAL IMPORTANT INFORMATION GENERAL INFORMATION SPECIFICATIONPRODUCT DESCRIPTION DESCRIPTIONOVEN INSTALLATION INFORMATIONAPPEARANCE VIEW AUTO TOUCH CONTROL PANELMICROWAVE COOKING CONDITION OPERATION SEQUENCEOFF CONDITION MICROWAVE VARIABLE COOKINGDOOR OPEN MECHANISM MONITOR SWITCHFUNCTION OF IMPORTANT COMPONENTS MONITOR RESISTOREXHAUST THERMISTOR FUSE F6.3AASYMMETRIC RECTIFIER INTAKE THERMISTORSERVICING TROUBLESHOOTING GUIDEWARNING TO SERVICE PERSONNEL REMEMBER TO CHECK 3DTEST PROCEDURE POSSIBLE CAUSE AND DEFECTIVE PARTS MAGNETRON THERMAL CUT-OUT145˚C TC1 MICROWAVE OUTPUT POWER IEC-705-1988 TEST PROCEDURESPROCEDURE COMPONENT TEST LETTER AMAGNETRON TEST BHIGH VOLTAGE TRANSFORMER TEST PROCEDURELETTER COMPONENT TEST TEST PROCEDURESDHIGH VOLTAGE CAPACITOR TESTCARRY OUT 3DCHECKS PROCEDURE COMPONENT TEST LETTERESWITCH TEST FWEAK POINT A018HFUSE F6.3A TEST PROCEDURE LETTER COMPONENT TESTGWEAK POINT A017CARRY OUT 3DCHECKS ITHERMAL CUT-OUTTESTCARRY OUT 3DCHECKSINTAKE THERMISTOR TEST KMAGNETRON THERMISTOR TESTEXHAUST THERMISTOR TEST LMOTOR WINDING TESTTEST PROCEDURES NTOUCH CONTROL PANEL ASSEMBLY TESTOKEY UNIT TEST PROCEDURE LETTER COMPONENT TESTLETTER TEST PROCEDURES CONTDCOMPONENT TEST RELAY TEST11 Stop Switch Circuit 1Power Supply Circuit3Power SYNC Signal Generating Circuit 12 Exhaust Air Temperature Detecting CircuitMagnetron high-voltagecircuit driving signal Temperature measurement input EXHAUST THERMISTORTemperature measurement input INTAKE THERMISTOR Signal to sound buzzerSignal coming from touch key SignalPower source voltage Signal similar to R3Sound Voltage level control terminal Figure T-4Relation between Pin Nos, and Signals2-2Memory IC IC2 Signal2. Shapes of Electronic Components 5. Other PrecautionsSERVICING 3.Servicing of Touch Control PanelPROCEDURE FOR ENTERING TO IC-2 OTHER CHECKING AND CLEARING PRO CEDURE HIGH VOLTAGE COMPONENTS REMOVAL COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDUREOUTER CASE REMOVAL BLOWER MOTOR REMOVAL MAGNETRON REMOVALHIGH VOLTAGE TRANSFORMER REMOVAL STIRRER MOTOR UPPER REMOVALCONTROL PANEL ASSEMBLY REMOVAL CONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVALHOW TO RELEASE THE POSITIVE LOCK CONNECTOR ProcedurePOWER SUPPLY CORD REPLACEMENT DOOR ADJUSTMENT DOOR REPLACEMENT AND ADJUSTMENTDOOR REPLACEMENT CHOKE COVER REMOVALMICROWAVE MEASUREMENT SERVICE INFORMATIONPREPARATION FOR TESTING REQUIREMENTR-2397 Figure O-1.Oven SChematic-OFFConditionFigure O-2.Oven SChematic-ONCondition 1 2 Figure S-1.Pictorial DiagramHIGH VOLTAGE COMPONENTS R-2397Circuit Figure S-2.ControlPanelFigure S-3.Printed Wiring Board ELECTRIC PARTS PARTS LISTThe parts marked * are used in voltage more than CABINET PARTSDESCRIPTION The parts marked * are used in voltage more thanREF. NO CODEThe parts marked * are used in voltage more than OVEN PARTSDOOR PARTS REF. NOThe parts marked * are used in voltage more than MISCELLANEOUSSCRE, NUTS AND WASHERS REF. NO1-28 RFIL-A004WRE0 POWER SUPPLY CORD1-28 RFIL-A004WRE0 1-29 RFIL-A002WRE0OVEN AND CABINET PARTS CONTROL PANEL PARTS DOOR PARTSTRAY HOLDER * SPADPA551WRE0 PRINTING MATER DOOR PROTECTION SHEET * SPADPA552WRE0DOOR PAD * SPADF0341WRE0 INSTRUCTION BOOKR-2397