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Sharp R-2397 service manual

Models: R-2397

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R-2397

'97 SHARP CORP. (5U0.10E) Printed in Japan

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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 SPECIFICATION PRODUCT DESCRIPTIONGENERAL INFORMATION DESCRIPTIONINSTALLATION INFORMATION APPEARANCE VIEWOVEN AUTO TOUCH CONTROL PANELOPERATION SEQUENCE OFF CONDITIONMICROWAVE COOKING CONDITION MICROWAVE VARIABLE COOKINGMONITOR SWITCH FUNCTION OF IMPORTANT COMPONENTSDOOR OPEN MECHANISM MONITOR RESISTORFUSE F6.3A ASYMMETRIC RECTIFIEREXHAUST THERMISTOR INTAKE THERMISTORTROUBLESHOOTING GUIDE WARNING TO SERVICE PERSONNELSERVICING 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 PROCEDURE LETTER COMPONENT TESTBHIGH VOLTAGE TRANSFORMER TEST TEST PROCEDURESPROCEDURE COMPONENT TEST LETTER ESWITCH TESTDHIGH VOLTAGE CAPACITOR TESTCARRY OUT 3DCHECKS FWEAK POINT A018PROCEDURE LETTER COMPONENT TEST GWEAK POINT A017CARRY OUT 3DCHECKSHFUSE F6.3A TEST ITHERMAL CUT-OUTTESTCARRY OUT 3DCHECKSKMAGNETRON THERMISTOR TEST EXHAUST THERMISTOR TESTINTAKE THERMISTOR TEST LMOTOR WINDING TESTNTOUCH CONTROL PANEL ASSEMBLY TEST OKEY UNIT TESTTEST PROCEDURES PROCEDURE LETTER COMPONENT TESTTEST PROCEDURES CONTD COMPONENT TESTLETTER RELAY TEST1Power Supply Circuit 3Power SYNC Signal Generating Circuit11 Stop Switch Circuit 1.Control UnitMagnetron high-voltagecircuit driving signal Signal to sound buzzerDESCRIPTION OF LSI LSIIZA646DRSignal Power source voltageSignal coming from touch key Signal similar to R3Figure T-4Relation between Pin Nos, and Signals 2-2Memory IC IC2Sound Voltage level control terminal Signal5. Other Precautions SERVICING2. Shapes of Electronic Components 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 MAGNETRON REMOVAL HIGH VOLTAGE TRANSFORMER REMOVALBLOWER MOTOR REMOVAL STIRRER MOTOR UPPER REMOVALCONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVAL HOW TO RELEASE THE POSITIVE LOCK CONNECTORCONTROL PANEL ASSEMBLY REMOVAL ProcedurePOWER SUPPLY CORD REPLACEMENT DOOR REPLACEMENT AND ADJUSTMENT DOOR REPLACEMENTDOOR ADJUSTMENT CHOKE COVER REMOVALSERVICE INFORMATION PREPARATION FOR TESTINGMICROWAVE MEASUREMENT REQUIREMENTR-2397 Figure O-1.Oven SChematic-OFFConditionFigure O-2.Oven SChematic-ONCondition Figure S-1.Pictorial Diagram HIGH VOLTAGE COMPONENTS1 2 R-2397Circuit Figure S-2.ControlPanelFigure S-3.Printed Wiring Board PARTS LIST The parts marked * are used in voltage more thanELECTRIC PARTS CABINET PARTSThe parts marked * are used in voltage more than REF. NODESCRIPTION CODEOVEN PARTS DOOR PARTSThe parts marked * are used in voltage more than REF. NOMISCELLANEOUS SCRE, NUTS AND WASHERSThe parts marked * are used in voltage more than REF. NOPOWER SUPPLY CORD 1-28 RFIL-A004WRE01-28 RFIL-A004WRE0 1-29 RFIL-A002WRE0OVEN AND CABINET PARTS CONTROL PANEL PARTS DOOR PARTSDOOR PROTECTION SHEET * SPADPA552WRE0 DOOR PAD * SPADF0341WRE0TRAY HOLDER * SPADPA551WRE0 PRINTING MATER INSTRUCTION BOOKR-2397