Sharp R-403JK Supplemental Service Manual
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Sharp R-403JK Supplemental Service Manual

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SUPPLEMENTAL SERVICE MANUAL
R-403JK
This is a supplemental Service Manual for Microwave Oven model R-403JK. This model is quite similar to the base models
R408JK/JW; (S24M231R408JE).
This supplemental manual must be used in conjunction with the base model service manual for complete operation,
service, safety and replacement parts information.
In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified
should be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high voltage and
current, contact with following parts may result in a severe, possibly fatal, electrical shock. (High Voltage Capacitor,
High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..)
BEFORE SERVICING ..................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL .............................................................................................................. 1
MICROWAVE MEASUREMENT PROCEDURE .................................................................................................. 2
FOREWORD AND WARNING ............................................................................................................................. 3
PRODUCT SPECIFICATIONS ............................................................................................................................. 4
GENERAL INFORMATION ...................................................................................................................................4
KEY UNIT TEST ....................................................................................................................................................6
CPU UNIT CIRCUIT ...............................................................................................................................................8
PARTS LIST ..........................................................................................................................................................9
PACKING AND ACCESSORIES ......................................................................................................................... 13
SHARP ELECTRONCS CORPORATION
Service Headquarters: Sharp Plaza, Mahwah, New Jersey, 07430-2135
MODEL

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This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
S34M235R403JE
MICROWAVE OVEN
R-403JK
R - 4 0 3 J K
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  • Page 1: Table Of Contents

    MODEL R-403JK This is a supplemental Service Manual for Microwave Oven model R-403JK. This model is quite similar to the base models R408JK/JW; (S24M231R408JE). This supplemental manual must be used in conjunction with the base model service manual for complete operation, service, safety and replacement parts information.

  • Page 2: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy

    ELECTRONICS CORPORATION immediately @1-800-237-4277. If the unit operates with the door open, service person should 1) tell the user not to operate the oven and 2) contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration's Center for Devices and Radiological Health immediately.

  • Page 3: Warning To Service Personnel

    R-403JK WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro- ducing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Trans- former, Magnetron, High Voltage Rectifier Assem- bly, High Voltage Harness etc..

  • Page 4: Microwave Measurement Procedure

    R - 4 0 3 J K MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm at any point 5cm or more from the external surface of the oven.

  • Page 5: Foreword And Warning

    MICROWAVE OVEN R-403JK GENERAL INFORMATION FOREWORD This supplemental Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the TOUCH CONTROL PANEL SHARP MICROWAVE OVEN, R-403JK. Model R-403JK, is quite similar to base model R-408JK/JW (Ref.# S24M231R408JE).

  • Page 6: Product Specifications

    R - 4 0 3 J K SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts 14.0 Amperes, 1600 watts 60 Hertz Single phase, 3 wire grounded Power Output 1100 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 21-21/32" Height 12-3/8"...
  • Page 7 R-403JK a qualified electrician and have it replaced with a properly grounded Grounded three-pronged wall receptacle or have a grounding adapter properly Receptacle Box grounded and polarized. If the extension cord must be used, it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally.

  • Page 8: Key Unit Test

    R - 4 0 3 J K TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER KEY UNIT TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4.
  • Page 9 R-403JK GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT Removal 1. Disconnect the power supply cord and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Remove the control panel assembly, referring to chapter of CONTROL PANEL ASSEMBLY REMOVAL.

  • Page 10: Cpu Unit Circuit

    R - 4 0 3 J K...

  • Page 11: Parts List

    R-403JK PARTS LIST Note: The parts marked “∆ ∆ ∆ ∆ ∆ ” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. "§" MARK: PARTS DELIVERY SECTION. REF. NO. PART NO. § DESCRIPTION...
  • Page 12 To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 2. REF. NO. 3. PART NO. 4. DESCRIPTION Order Parts from the authorized SHARP parts Distributor for your area. Defective parts requiring return should be returned as indicated in the Service Policy.
  • Page 13 R-403JK OVEN AND CABINET PARTS 1-11 4-10 1-10 4-11...
  • Page 14 R - 4 0 3 J K Control Panel Parts 3-12 3-10 3-11 Door Parts Miscellaneous Actual wire harness may be different from illustration.

  • Page 15: Packing And Accessories

    R-403JK PACKING AND ACCESSORIES TOP PAD ASSEMBLY DOOR PROTECTION SHEET 6-3 TURNTABLE TRAY PLASTIC BAG TRAY HOLDER 6-6 OPERATION MANUAL BOTTOM PAD ASSEMBLY 6-2 TURNTABLE SUPPORT PACKING CASE...
  • Page 16 No part of this publication may be repro- duced, stored in retrieval systems, or trans- mitted in any form or by any means, elec- tronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. 2004 SHARP CORP. (4M2.00E) Printed in U.S.A...

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