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Sharp R-610DKA Service Manual

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Popcorn
Baked
Fresh
Dinner
Potatoes
Rolls &
Vegetable
Frozen
Compu
Plate
Muffins
Entree
Derfost
Instant Action
1
2
Ground
NO.
Chicken
Frozen
LBS.
Meat
Breast
Casserole Beverage
Microwav e
CUPS
Vegetable
Kitchen
COOK DEFROST
KG OZ
Pizza
Timer/Clo ck
6
7
BEFORE SERVICING ...................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL ................................................................................................................ 1
MICROWAVE MEASUREMENT PROCEDURE ................................................................................................... 2
FOREWORD AND WARNING ............................................................................................................................... 3
PRODUCT SPECIFICATIONS .............................................................................................................................. 4
GENERAL INFORMATION ................................................................................................................................... 4
OPERATION .......................................................................................................................................................... 6
TROUBLESHOOTING GUIDE .............................................................................................................................. 9
TEST PROCEDURE ............................................................................................................................................ 10
TOUCH CONTROL PANEL ................................................................................................................................. 18
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 22
PICTORIAL DIAGRAM ........................................................................................................................................ 29
POWER UNIT CIRCUIT ...................................................................................................................................... 30
CPU UNIT CIRCUIT ............................................................................................................................................ 31
PRINTED WIRING BOARD ................................................................................................................................. 32
PARTS LIST ........................................................................................................................................................ 33
PACKING AND ACCESSORIES ......................................................................................................................... 35
SHARP CORPORATION
SERVICE MANUAL
MODELS
3
4
5
Power
Minute
Level
PLus
8
9
0
STOP
Clear
START
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 con-
tain 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 Recti-
fier Assembly, High Voltage Harness etc..)

TABLE OF CONTENTS

MICROWAVE OVEN
R-610DKA
R-610DWA
R-610DSA
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
R - 6 1 0 D K A
R- 610DWA
R - 6 1 0 D S A
S7117R610DPWA
Page

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  • Page 1: Table Of Contents

    R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A SERVICE MANUAL S7117R610DPWA MICROWAVE OVEN R-610DKA MODELS R-610DWA Popcorn Baked Fresh Dinner Potatoes Rolls & Vegetable Frozen Compu Plate Muffins Entree Derfost...

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

    Before servicing an operative unit, perform a microwave emission check as per the Microwave Measurement Procedure outlined in this service manual. If microwave emissions level is in excess of the specified limit, contact SHARP 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 - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A 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.

  • Page 4: Microwave Measurement Procedure

    R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A 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...
  • Page 5 MICROWAVE OVEN R-610DKA/ R-610DWA/ R-610DSA GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVEN, R-610DKA, R-610DWA, R-610DSA. OPERATION 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 6: General Information

    R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 14 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 1100 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 19-1/2"...

  • Page 7: Oven Diagram

    R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A contact a qualified electrician and have it replaced with a properly Grounded 3-Pronged Plug grounded three-pronged wall receptacle or have a grounding adapter Receptacle Box properly grounded and polarized.

  • Page 8: Operation

    R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during relay and is mechanically associated with the door so oven operation.
  • Page 9 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. CLOCK APPEARS ON DISPLAY OVEN THERMAL MONITOR MG. THERMAL CUT-OUT CUT-OUT FUSE 20A POWER TRANSFORMER N.O.
  • Page 10 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE TEST THE DOOR SENSING SWITCH, The door is opened by pulling the door. Refer to the Figure PRIMARY INTERLOCK RELAY (RY2), RELAY D-1.

  • Page 11: Troubleshooting Guide

    R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A TROUBLESHOOTING GUIDE Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected. When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks.

  • Page 12: Test Procedure

    R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A CK = Check / RE = Replace RE RE A B C D E F F G H RE RE CK I CK CK CK J K L M TEST PROCEDURE PROBLEM...
  • Page 13 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 4. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm.
  • Page 14 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HIGH VOLTAGE RECTIFIER TEST 1. Disconnect the power supply cord, and then remove outer case. 2.
  • Page 15 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER CAUTION: IF THE THERMAL CUT-OUT INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE THERMAL CUT-OUT. SECONDARY INTERLOCK SWITCH TEST 1.
  • Page 16 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 5. Reconnect all leads removed from components during testing. 6. Reinstall the outer case (cabinet). 7.
  • Page 17 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 2-1 In connection with pads. a) When touching the pads, a certain group of pads do not produce a signal. b) When touching the pads, no pads produce a signal.
  • Page 18 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER RELAY TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3.
  • Page 19 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER STEPS OCCURRENCE CAUSE OR CORRECTION Only pattern at "a" is broken. *Insert jumper wire J1 and solder. Pattern at "a"...

  • Page 20: Touch Control Panel

    R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 3) Power Source Circuit The control unit section consists of the following units. This circuit generates voltages necessary in the control unit from the AC line voltage.
  • Page 21 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A Pin No. Signal Description Back light circuit (Light emitting diodes) driving signal. 12-13 P56-P55 Terminal not used. CNTR0 Signal to sound buzzer (2.0 kHz). 0.1 sec.
  • Page 22 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A Pin No. Signal Description 33-40 P27-P20 Terminal not used. Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45 terminal while one of G8 line keys on key matrix is touched.
  • Page 23 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A TOUCH CONTROL PANEL SERVICING 4) Re-install the outer case (cabinet). 1. Precautions for Handling Electronic Components 5) Re-connect the power supply cord after the outer This unit uses CMOS LSI in the integral part of the case is installed.

  • Page 24: Component Replacement And Adjustment Procedure

    WARNING FOR WIRING To prevent an electric shock, take the following pre- and Oven cavity. cautions. 3) Sharp edge: 1. Before wiring, Base plate, Oven cavity, Waveguide flange, Angles, 1) Disconnect the power supply cord. Guides and other metallic plates.

  • Page 25: Pictorial Diagram

    R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A 6. Lift entire outer case from the unit. COMPONENTS OR WIRING. CAUTION: 1. DISCONNECT OVEN FROM POWER SUP NOTE: When replacing the outer case, the 2 special PLY BEFORE REMOVING OUTER CASE.
  • Page 26 5. Disconnect wire leads from turntable motor. CAUTION: NO SHARP EDGES MUST BE EVIDENT AF- (See "Positive lock connector removal") TER REMOVAL OF THE TURNTABLE MO- 6. Remove two (2) screws holding turntable motor to oven...
  • Page 27 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A ® POSITIVE LOCK CONNECTOR (NO-CASE TYPE) REMOVAL Terminal 1. Disconnect the power supply cord, and then remove outer case. Positive lock® 2. Open the door and block it open. connector 3.

  • Page 28: Door Replacement

    R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A Latch Hook Door hook, pushing and pulling upper portion of door toward the oven face. Then check lower portion of the latch hook, pushing and pulling lower portion of the door Latch Door Sensing...

  • Page 29: Power Unit Circuit

    R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A 2. Tear the backing film by pulling the adhesive tape. 7-pin wire harness 3. Put the pasted side of the sealer film on the door panel. Power unit Sealer film Backing film...
  • Page 30 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A 3. Stick the key unit firmly to the door frame by rubbing Ribbon cable with soft cloth not to scratch. NOTE: For CPU unit Handle the CPU unit carefully so that the ribbon cable does not come off.
  • Page 31 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A...
  • Page 32 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A D1-D4 1N4002 CN-C – – C21 10 /35v AC(N) OVEN LAMP TURNTABLE OVEN LAMP MOTOR TURNTABLE FAN MOTOR MOTOR DTD143ES FAN MOTOR PKM22EPT BUZZER AC(H)
  • Page 33 R - 6 1 0 D K A R- 610DWA R - 6 1 0 D S A COM2 COM1 COM1 COM2 COM0 COM3 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 CSTS4.00MG SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5...

  • Page 34: Printed Wiring Board

    R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A (J1) Figure S-4. Printed Wiring Board of Power Unit...

  • Page 35: Parts List

    CABINET PARTS 2- 1 FDAI-A240WRYZ Base plate 2- 2 GLEGPA074WRE0 Foot 2- 3 GLEGPA081WRFZ 2- 4 GCABUA773WRPZ Outer case cabinet [R-610DKA] 2- 4 GCABUA775WRPZ Outer case cabinet [R-610DWA] 2- 4 GCABUA777WRPZ Outer case cabinet [R-610DSA] 2- 5 GLEGPA080WRFZ Front leg [R-610DKA]...

  • Page 36: Door Parts

    HPNL-A768WRRZ Door screen [R-610DKA] 5-3-2 HPNL-A770WRRZ Door screen [R-610DWA] 5-3-2 HPNL-A768WRRZ Door screen [R-610DSA] 5- 3 FWAKPA338WRKZ Door frame assembly [R-610DKA] 5- 3 FWAKPA340WRKZ Door frame assembly [R-610DWA] 5- 3 FWAKPA342WRKZ Door frame assembly [R-610DSA] 5- 4 JHNDPA203WRTZ Handle [R-610DKA]...

  • Page 37: Packing And Accessories

    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. PACKING AND ACCESSORIES TOP PAD ASSEMBLY...
  • Page 38 R - 6 1 0 D K A R - 610 DWA R - 6 10 D S A 7-13 OVEN AND CABINET PARTS 7-18 4-23 4-26 7-14 4-17 1-13 4-22 7-12 4-12 4-30 7-14 4-28 4-27 4-18 7-18 7-11 1-11 4-11 4-19...
  • Page 39 R - 6 1 0 D K A R- 6 10DWA R - 6 1 0 D S A DOOR PARTS 5-17 5-17 5-12 5-13 5-18 5-14 4-13 5-18 5-18 5-18 5-11 5-10 5-18 5-15 5-18 5-3-1 5-15 5-16 5-3-2 MISCELLANEOUS (CAPACITOR) Actual wire harness may be different from illustration.
  • Page 40 No part of this publication may be reproduced, stored in retrieval systems, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. 2001 SHARP CORP. (7S1.700E) Printed in U.S.A...

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