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Sharp R-390AW Supplemental Service Manual
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Sharp R-390AW Supplemental Service Manual

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SUPPLEMENTAL SERVICE MANUAL
R-390AW
This is a supplemental Service Manual for Models R-390AW and R-390AK. The R-390AW is quite similar to model
R-390AK, with color changing. And also this supplemental service manual contains update information for the R-390AK.
Use this supplemental manual together with the Base Model Service Manual (Refer No. is S5708R390APK/) for
complete operation, service information, etc..
BEFORE SERVICING ......................................................................................................INSIDE FRONT COVER
FOREWORD ..................................................................................................................... INSIDE FRONT COVER
MICROWAVE MEASUREMENT PROCEDURE ................................................................................................... 1
SCHEMATIC DIAGRAM ........................................................................................................................................ 2
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE .................................................................. 3
CPU UNIT CIRCUIT .............................................................................................................................................. 6
PRINTED WIRING BOARD OF DISPLAY UNIT ................................................................................................... 7
PARTS LIST FOR R-390AW ................................................................................................................................. 8
INFORMATION OF PARTS CHANGING FOR R-390AK .................................................................................... 10
SHARP CORPORATION
MODELS
INDEX
START
POPCOR N
MINUTE PLUS
STOP
CLEAR
1
2
3
4
5
6
7
8
9
0
n the interest of user-safety the oven should be restored to its original
I
condition and only parts identical to those specified should be used.

TABLE OF CONTENTS

MICROWAVE OVEN
R-390AW
R-390AK
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
R-390AW
R-390AK
SX712R390APW/
Page

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Summary of Contents for Sharp R-390AW

  • Page 1: Table Of Contents

    This is a supplemental Service Manual for Models R-390AW and R-390AK. The R-390AW is quite similar to model R-390AK, with color changing. And also this supplemental service manual contains update information for the R-390AK.

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

    R-390AW, R-390AK FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-390AW, R-390AK. It is recommended that service personnel carefully study the entire text of this manual so that they will be qualified to render satisfactory customer service.

  • Page 3: Microwave Measurement Procedure

    R-390Aw R-390AK 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...
  • Page 4 R-390Aw R-390AK SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. HOME PAGE APPEARS ON DISPLAY. THERMAL OUTER CASE MONITOR THERMAL CUT-OUT (OVEN) SWITCH FUSE CUT-OUT (MG.) COM. POWER N.O. TRANSFORMER (RY-1) (RY-2) PRIMARY INTERLOCK RELAY CAPACITOR 0.94µF CONTROL UNIT...

  • Page 5: Component Replacement And Adjustment Procedure

    DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING AFTER REMOVING OUTER CASE. WARNING FOR WIRING To prevent an electric shock, take the following man- 3) Sharp edge: Bottom plate, Oven cavity, Waveguide flange, ners. Chassis support and other metallic plate.

  • Page 6: Door Replacement

    R-390Aw R-390AK Coil Groove joint pliers Shaft Shaft Stator These are the position Center of Table where should be Axis bracket pinched with pliers Bracket Rotor Stator Rotor Rear View Side View DOOR REPLACEMENT REMOVAL 2. Re-install the latch spring to the latch head. Re-install the 1.
  • Page 7 R-390Aw R-390AK SEALER FILM Upper oven hinge Installation 1. Put the adhesive tape on the backing film of the sealer film as shown in Fig. C-9. 2. Tear the backing film by pulling the adhesive tape. Door assemby 3. Put the pasted side of the sealer film on the door panel...
  • Page 8 R-390Aw R-390AK D1-D4 11ES1 – – AC120V 60Hz – 2SB1238 2SB1238 TURNTABLE R5 3.3k MOTOR R4 1.3k OVEN LAMP MOTOR N.O. MICRO Q3 KRC243M or DTD143ES SH-B C6 10µ/35v – SH-A : IF NOT SPECIFIED, 1/4w ± 5% NOTE : IF NOT SPECIFIED, 1SS270A...
  • Page 9 R-390Aw R-390AK...
  • Page 10 R-390Aw R-390AK R143 SW19 LMP1 SW21 R142 R141 SW20 C123 LMP2 SW17 SW16 R140 CN-C Front side R135 C120 R120 R134 C134 R110 C121 C133 C110 C122 TP34 C132 R133 R51R52 R132 C131 R131 C130 R137 R130 Q140 R138 C135...

  • Page 11: Parts List For R-390Aw

    R-390Aw R-390AK PARTS LIST FOR R-390AW REF. NO. PART NO. DESCRIPTION Q'TY CODE ELECTRIC PARTS 1- 1 QSW-MA110WRE0 2nd interlock switch, door sensing switch and outer case switches 1- 2 QFSHDA009WRE0 Fuse holder 1- 3 FFS-BA012WRK0 Monitor fuse and monitor switch assembly...
  • Page 12 R-390Aw R-390AK REF. NO. PART NO. DESCRIPTION Q'TY CODE 3- 7 JBTN-B081WRF0 Book mark button 3- 8 JBTN-B080WRF0 Page button 3- 9 JBTN-B079WRF0 Select button 3- 10 JBTN-B078WRF0 Start button 3- 11 MSPRCA050WRE0 Open button spring 3- 12 MSPRCA104WRE0 Select button spring...
  • Page 13 7- 8 Screw: 4mm X 14mm Not listed XOTSD40P14000 Jun./'97 INFORMATION OF PARTS CHANGE FOR BOTH MODELS R-390AK AND R-390AW The following parts will be changed for the both models R-390AK and R-390AW. Transistor VSKRC243M//-3 VSDTD143ES/-3 Dec./'97 3- 2- 6...
  • Page 14 R-390Aw R-390AK OVEN AND CABINET PARTS 4-18 1-11 1-10 4-19 4-23 4-10 1-15 1-13 4-16 4-20 4-15 4-12 4-22 4-14 1-12 4-11 4-13 1-14 4-21...
  • Page 15 R-390Aw R-390AK CONTROL PANEL, DOOR AND MISCELLANEOUS PARTS 3 - 2 3 - 5 3 - 9 3-2-7 3 - 4 3-13 3-2-9 3 - 8 3 - 1 3-10 3-13 3 - 3 3 - 7 3-13 3-3-1 3-12...
  • Page 16 No part of this publication may be repro- duced, stored in a retrieval systems, or trans- mitted in any form or by any means, elec- tronic, mechanical, photocopying, record- ing, or otherwise, without prior written per- mission of the publisher. '97 SHARP CORP. (5K2.770E) Printed in U.S.A...

This manual is also suitable for:

R-390ak