Manuals / Sharp / Kitchen Appliance / Microwave Oven

Sharp R-21JCA-F service manual Packing And Accessories

Models: R-21JCA-F

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R-21JCA-F

PACKING AND ACCESSORIES

TRAY HOLDER

(SPADFA435WRE0)

6-7MENU STICKER

Into	Cavity
	the
Oven

6-1INSTRUCTION BOOK

Not Replaceable Items.

TOP PAD ASSEMBLY

(FPADBA385WRK0)

WRAP COVER

(SSAKHA034WRE0)

DOOR PROTECTION SHEET

(SPADPA204WRE0)

BOTTOM PAD ASSEMBLY (FPADBA386WRK0)

PACKING CASE

SPAKCD803WREZ

No part of this publication may be reproduced, stored in retrieval systems, or transmitted in any form or by any means, electronic, me- chanical, photocopying, recording, or other- wise, without prior written permission of the publisher.

'05 SHARP CORP. (10S0.80E) Printed in U.S.A

Page 36

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Sharp R-21JCA-F service manual Packing And Accessories

Contents

SHARP CORPORATION SERVICE MANUALMODEL R-21JCA-F LIGHT DUTY COMMERCIAL MICROWAVE OVENSBEFORE SERVICING WARNING TO SERVICE PERSONNEL After repairingDont Touch Danger High Voltage Before ServicingMICROWAVE MEASUREMENT PROCEDURE B. Preparation for testingA. Requirements C. Leakage testSERVICE MANUAL If provided, Vent Hood, Fan assembly, Cooling Fan MotorLIGHT DUTY COMMERCIAL MICROWAVE OVEN R-21JCA-F FOREWORD DANGERSPECIFICATION GENERAL INFORMATIONNOTE Internal capacity is calculated by measuring maximum width, depth and heightOVEN DIAGRAM 8 10 6OPERATION DESCRIPTION OF OPERATING SEQUENCEOFF CONDITION COOKING CONDITIONFigure O-1 Oven Schematic-OFF Condition Figure O-2 Oven Schematic-Microwave cooking ConditionNOTE Indicates components with potential above 250 R-21JCA-FDESCRIPTION AND FUNCTION OF COMPONENTS NOTE MONITOR FUSE AND MONITOR SWITCH ARE REPLACED AS AN ASSEMBLYDOOR SENSING AND SECONDARY INTERLOCK SWITCHES MONITOR SWITCHTROUBLESHOOTING GUIDE When the testing is completedTEST PROCEDURES PROCEDURE A MAGNETRON ASSEMBLY TESTMICROWAVE OUTPUT POWER B POWER TRANSFORMER TESTTEST PROCEDURES PROCEDURE LETTERCOMPONENT TEST C HIGH VOLTAGE RECTIFIER TESTTEST PROCEDURES PROCEDURE F SECONDARY INTERLOCK SWITCH TESTG MONITOR SWITCH TEST LETTERTEST PROCEDURES PROCEDURE J CONTROL PANEL ASSEMBLY TESTBefore testing LETTERTEST PROCEDURES PROCEDURE RELAY SYMBOLPower transformer LETTERTEST PROCEDURES PROCEDURE L FOIL PATTERN ON THE PRINTED WIRING BOARD TESTInsert jumper wire J1 and solder Pin No. 5 of the 3-pin connector A and theTOUCH CONTROL PANEL ASSEMBLY 2 Power Source Circuit4 Reset Circuit 6 Door Sensing SwitchSignal Power source voltageInternal clock oscillation frequency input setting Power source voltageTOUCH CONTROL PANEL SERVICING 1 Servicing the touch control panel with power supply of the oven4. Other Precautions 2. Servicing of Touch Control PanelPRECAUTIONS FOR USING LEAD-FREE SOLDER 2. Using lead-free wire solderSn-Ag-Cu 1. Employing lead-free solderCOMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE POWER TRANSFORMER REMOVALOUTER CASE REMOVAL WARNING FOR WIRINGHIGH VOLTAGE RECTIFIER ASSEMBLY AND HIGH VOLTAGE CAPACITOR REMOVAL CONTROL PANEL ASSEMBLY REMOVALMAGNETRON REMOVAL OVEN LAMP AND LAMP SOCKET REMOVALPOSITIVE LOCK CONNECTOR NO-CASE TYPE REMOVAL ANTENNA MOTOR REMOVALCOOLING FAN MOTOR REMOVAL Figure C-2. Positive lock connectorPOWER SUPPLY CORD REPLACEMENT DOOR PARTS REMOVAL After adjustment, check the followingFigure C-5. Latch Switch Adjustments Figure C-6. Door DisassemblyANTENNA MOTOR SHAFT REPLACEMENT After any service, make sure of the followingFigure C-7. Door Replacement REMOVALINSTALLATION OF CERAMIC SHELF Figure C-10. Stirrer Antenna Assembly InstallationS-1.PictorialDiagram HIGHVOLTAGECOMPONENTSCN-A3 Pin5mmPitch R-21JCA-FFigure S-3. Printed Wiring Board R-21JCA-FA B C D E F G A B C D E F GPARTS LIST Note The parts marked “∆” may cause undue microwave exposureThe parts marked “*” are used in voltage more than ELECTRIC PARTSHOW TO ORDER REPLACEMENT PARTS DOOR PARTSMISCELLANEOUS SCREWS,NUTS AND WASHERSOVEN AND CABINET PARTS DOOR PARTS MISCELLANEOUSCONTROL PANEL PARTS PACKING AND ACCESSORIES