Sharp R-414HS Service Manual

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R-414HS
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..)
TABLE OF CONTENTS
Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY.................. INSIDE FRONT COVER
BEFORE SERVICING ..................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL .............................................................................................................. 1
MICROWAVE MEASUREMENT PROCEDURE .................................................................................................. 2
FOREWORD AND WARNING ............................................................................................................................. 3
PRODUCT SPECIFICATIONS............................................................................................................................. 4
GENERAL INFORMATION ................................................................................................................................. 4
TEST PROCEDURE ..............................................................................................................................................6
TOUCH CONTROL PANEL ....................................................................................................................................8
PICTORIAL DIAGRAM ........................................................................................................................................12
CPU UNIT CIRCUIT .............................................................................................................................................13
PRINTED WIRING BOARD .................................................................................................................................14
PARTS LIST ........................................................................................................................................................15
PACKING AND ACCESSORIES .........................................................................................................................19
S23M204R414HE
R-414HS
MICROWAVE OVEN
MODELS
SUPPLEMENTAL SERVICE MANUAL
SHARP ELECTRONCS CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
Service Headquarters: Sharp Plaza, Mahwah, New Jersey, 07430-2135
R-414HS
This is a supplemental Service Manual for Microwave Oven model R-414HS. This model is quite similar to the base models
R426HS/R-426HK/R-426HW; (S13M203R426HE).
This supplemental manual must be used in conjunction with the base model service manual for complete operation,
service, safety and replacement parts information.
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Summary of Contents

Page 1 - SUPPLEMENTAL SERVICE MANUAL

R-414HSIn the interest of user-safety the oven should be restored to its original condition and only parts identical to those specifiedshould be used.

Page 2 - BEFORE SERVICING

8R-414HSTOUCH CONTROL PANEL ASSEMBLYOUTLINE OF TOUCH CONTROL PANELThe touch control section consists of the following units.(1) Key Unit(2) Control Un

Page 3 - WARNING TO SERVICE PERSONNEL

9R-414HS1-2VL2-VL1IN Power source voltage input terminal.Standard voltage for LCD.3-6 AN7-AN4 INTerminal to change cooking input according to the Mode

Page 4

10R-414HS25 P41 IN Signal similar to AN3.When either G11 line on key matrix is touched, a corresponding signal will be input intoP41.26 P40 IN Connect

Page 5

11R-414HSConnected to LCD.The relation between signals are as follows:LSI signal (Pin No.) LCD (Pin No.) LSI signal (Pin No.) LCD (Pin No.)SEG0 (72)

Page 6 - SPECIFICATION

12R-414HS645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGECAPACITORHIGH VOLTAGEWIRE AH.V. RECTIFIERPOWER SUPPLY CORD 120V 60HzHIGH

Page 7 - OVEN DIAGRAM

13R-414HS645123645123ABCDEFGHABCDEFGHFigure S-3. CPU Unit Circuit

Page 8 - TEST PROCEDURES

14R-414HS645123645123ABCDEFGHABCDEFGHFigure S-5 . Printed Wiring Board of Power UnitRY1RY2E C BE C BE C BVRS1L1D7D3PSD4C2D1C1D2R8R7R2R4Q3 Q4SP1T

Page 9

15R-414HSREF. NO. PART NO. § DESCRIPTION Q'TY CODEPARTS LISTNote: The parts marked “∆∆∆∆∆” may cause undue microwave exposure.The parts marked “*

Page 10 - TOUCH CONTROL PANEL ASSEMBLY

16R-414HSHOW TO ORDER REPLACEMENT PARTSTo have your order filled promptly and correctly, please furnish the following information.1. MODEL NUMBER2. RE

Page 11 - DESCRIPTION OF LSI

17R-414HS645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS2-34-76-61-54-64-84-96-46-32-17-51-104-107-27-27-44-31-111-87-37-57-57-64-27-41-91-31-47-11

Page 12 - SEG25-SEG22

R-414HSPRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLEEXPOSURE TO EXCESSIVE MICROWAVEENERGY(a) Do not operate or allow the ove

Page 13

18R-414HS645123645123ABCDEFGHABCDEFGHCONTROL PANEL PARTS5-1-25-1-15-55-45-35-25-85-15-65-73-33-23-53-13-43-6Actual wire harness may be different from

Page 14 - Figure S-1. Pictorial Diagram

19R-414HSPACKING AND ACCESSORIESDOOR PROTECTION SHEET PLASTIC BAG PACKING CASE TOP PAD ASSEMBLY INTO THE OVEN CAVITY6-4 TURNTABLE TRAY6-7 OPERATIO

Page 16

21R-414HSNOTES

Page 17 - PARTS LIST

22R-414HS2003 SHARP CORP. (2M2.00E) Printed in U.S.ACOPYRIGHT © 2003 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be repro-

Page 18 - SCREWS,NUTS AND WASHERS

1R-414HSWARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowing parts

Page 19 - OVEN AND CABINET PARTS

2R-414HSMICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave radiation emit

Page 20 - MISCELLANEOUS

3R-414HSSHARP ELECTRONICS CORPORATIONSHARP PLAZA, MAHWAH,NEW JERSEY 07430-2135SUPPLEMENTAL SERVICE MANUALMICROWAVE OVENR-414HSFOREWORDThis supplementa

Page 21 - PACKING AND ACCESSORIES

4R-414HSGENERAL INFORMATIONGROUNDING INSTRUCTIONSThis oven is equipped with a three prong grounding plug. It must be plugged into a wall receptacle th

Page 22

5R-414HSa qualified electrician and have it replaced with a properly groundedthree-pronged wall receptacle or have a grounding adapter properlygrounde

Page 23

6R-414HSTEST PROCEDURESPROCEDURELETTERCOMPONENT TESTThe touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. There

Page 24

7R-414HSJ KEY UNIT TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST6) Reconnect the power supply cord after the outer case is installed.7) Run the ove

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