Sharp R-21JCA-F service manual Figure S-3. Printed Wiring Board

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R-21JCA-F

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Contents Model R-21JCA-F Before Servicing Dont Touch Before Servicing When the testing is completedRequirements Microwave Measurement ProcedureLeakage test Sharp Electronics Corporation Light Duty Commercial Microwave Oven 21JCA-F ForewordActual capacity for holding food is less SpecificationGeneral Information Maximum width, depth and height10 6 Oven DiagramCooking Condition OperationDescription of Operating Sequence OFF ConditionFM AM Figure O-1 Oven Schematic-OFF ConditionDescription and Function of Components Test Procedure Possible Case Defective Parts Troubleshooting GuideProblem Power Transformer Test Microwave Output PowerThermal CUT-OUT Test 125˚C Oven High Voltage Capacitor TestThermal CUT-OUT Test 145˚C Magnetron Primary Interlock Relay RY1 Door Sensing SwitchMonitor Switch Test Primary Interlock System TestBefore testing Control Panel Assembly TestNoise Filter Test Relay Test Test Procedures Letter Component TestSteps Occurrence Cause or Correction Description of LSI Touch Control Panel AssemblyPower source voltage +5V Pin No Signal Description Auto clear terminalPower source voltage Internal clock oscillation frequency input settingServicing Tools Other PrecautionsTouch Control Panel Servicing Servicing of Touch Control PanelSoldering Precautions for Using LEAD-FREE SolderUsing lead-free wire solder Employing lead-free solderPower Transformer Removal Component Replacement and Adjustment ProcedureOuter Case Removal Magnetron Removal Control Panel Assembly RemovalOven Lamp and Lamp Socket Removal Rear View Positive Lock Connector NO-CASE Type RemovalAntenna Motor Removal Cooling FAN Motor RemovalRe-install Power Supply Cord ReplacementRemoval Door Parts Removal After any service, make sure of the following Antenna Motor Shaft ReplacementRemoval Figure C-10. Stirrer Antenna Assembly Installation Installation of Ceramic ShelfHighvoltagecomponents PictorialDiagramCN-A3 Pin5mm Pitch Figure S-3. Printed Wiring Board Control Panel Parts Parts ListElectric Parts Cabinet PartsSCREWS,NUTS and Washers HOW to Order Replacement PartsDoor Parts MiscellaneousOven and Cabinet Parts Control Panel Parts Copyright 2005 by Sharp Corporation ALL Rights Reserved Packing and Accessories
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