Service manual

ManualsBrandsSharp ManualsKitchen AppliancesR-510HW - 1200 Watt Full Size Microwave

R-508HS

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

OPERATION ........................................................................................................................................................ 6

TEST PROCEDURE ..............................................................................................................................................7

TOUCH CONTROL PANEL ....................................................................................................................................8

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE .................................................................. 12

PICTORIAL DIAGRAM ........................................................................................................................................17

CONTROL UNIT CIRCUIT ................................................................................................................................... 18

PRINTED WIRING BOARD ................................................................................................................................. 19

PARTS LIST ........................................................................................................................................................ 20

PACKING AND ACCESSORIES ......................................................................................................................... 24

S83M216R508HE

R-508HS

MICROWAVE OVEN

MODEL

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-508HS

SUPPLEMENTAL SERVICE MANUAL

This is a supplemental Service Manual for Microwave Oven model R-508HS. This model is quite similar to the base models

R-510HK/R-510HW; (S43M208R510HE).

This supplemental manual must be used in conjunction with the base model service manual for complete operation,

service, safety and replacement parts information.

Summary of content (27 pages)

PAGE 1
R - 508HS SUPPLEMENTAL SERVICE MANUAL S83M216R508HE MICROWAVE OVEN MODEL R-508HS R-508HS This is a supplemental Service Manual for Microwave Oven model R-508HS. This model is quite similar to the base models R-510HK/R-510HW; (S43M208R510HE). 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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R-508HS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open.
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R-508HS 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. (Example) High Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc.. Read the Service Manual carefully and follow all instructions. Don't Touch ! Danger High Voltage When the testing is completed, 1.
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R-508HS 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/cm2 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/cm2 at any point 5cm or more from the external surface of the oven.
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R-508HS SERVICE MANUAL PRODUCT DESCRIPTION MICROWAVE OVEN R-508HS GENERAL INFORMATION FOREWORD This supplemental Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVEN; R-508HS. The model R-508HS is quite similar to base models R-510HK/R-510HW (Ref.# S43M208R510HE). OPERATION TOUCH CONTROL PANEL Check the interlock switches and the door seal carefully.
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R-508HS SPECIFICATION ITEM DESCRIPTION PowerRequirements 120 Volts 14.3 Amperes, 1700 watts 60 Hertz Single phase, 3 wire grounded Power Output 1200 watts (IEC 705 TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 24" Height 13-3/8" Depth 19-1/8" Cooking Cavity Dimensions Width 17-3/8" Height 10-1/2" Depth 18-5/8" 2.0 Cubic Feet Control Complement Touch Control System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min.
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R-508HS a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly 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.
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R-508HS OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during oven operation. and is mechanically associated with the door so that it will function in the following sequence. (1) When the door opens from the closed position, the secondary interlock relay (RY2) and primary interlock switch open their contacts. And contacts of the relay (RY1) remains closed. Then the monitor switch contacts close.
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R-508HS TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST G8 Key unit (Membrane Switch) front view G10 G11 POPCORN G12 Key unit ribbon cable G6 G5 G4 STOP *CLEAR G9 Pin NO. G13 DEFROST G3 G2 G1 CLEAR REHEAT 2 1 4 7 5 TIMER CLOCK 9 8 0 POWER LEVEL 3 6 *START *MINUTE PLUS G13 Pin NO. G1 G7 COOK * When door is close, key can be operated. Key Unit K RELAY TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3.
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R-508HS TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units. (1) Key Unit (2) Control Unit (The Control Unit consists of Power Unit and LSI Unit). 3) Power Source Circuit This circuit generates voltages necessary in the control unit from the AC line voltage. In addition, the synchronizing signal is available in order to compose a basic standard time in the clock circuit.
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R-508HS DESCRIPTION OF LSI LSI The I/O signal of the LSI is detailed in the following table. Pin No. Signal I/O Description 1-2 VL2-VL1 IN Power source voltage input terminal. Standard voltage for LCD. 3-6 AN7-AN4 IN Terminal to change cooking input according to the Model. By using the A/D converter contained in the LSI, DC voltage in accordance with the Model in operation is applied to set up its cooking constant. 7 AN3 IN Signal coming from touch key.
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R-508HS Pin No. Signal I/O 25 P41 IN Signal similar to AN3. When either G11 line on key matrix is touched, a corresponding signal will be input into P41. 26 P40 IN Connected to GND through the pull-down resistor. 27 RESET IN Auto clear terminal. Signal is input to reset the LSI to the initial state when power is applied. 28 P71 IN Signal similar to AN3. When either G10 line on key matrix is touched, a corresponding signal will be input into P71. 29 P70 IN Signal similar to ANI3.
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R-508HS Pin No. Signal I/O Description Connected to LCD. The relation between signals are as follows: LSI signal (Pin No.) LCD (Pin No.) SEG0 (72) ................................ SEG 0 SEG1 (71) ................................ SEG 1 SEG2 (70) ................................ SEG 2 SEG3 (69) ................................ SEG 3 SEG4 (68) ................................ SEG 4 SEG5 (67) ................................ SEG 5 SEG6 (66) ................................ SEG 6 SEG7 (65) .................
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R-508HS OVEN LAMP AND LAMP SOCKET REMOVAL 1. 2. 3. 4. 5. 6. 7. Disconnect the power supply cord and remove outer case. Open the door and block it open. Discharge high voltage capacitor. Pull the wire leads from the oven lamp socket. Remove the screw from the oven lamp socket. Remove the oven lamp socket from the magnetron duct. Remove the oven lamp from the socket by turning the oven lamp. 8. Now, the oven lamp and the oven lamp socket are free. Terminal Oven lamp socket Figure C-1.
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R-508HS 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. 5. Remove the graphic sheet from the control panel frame. (*See special note) Installation 1. Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol. 2.
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R-508HS COOLING FAN MOTOR REMOVAL 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. Disconnect the wire leads from the fan motor. 5. Remove the two (2) screws holding the fan motor to the oven cavity back plate. 6. Remove the fan blade from the fan motor shaft according to the following procedure. 7. Hold the edge of the rotor of the fan motor by using a pair of groove joint pliers.
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R-508HS 3. Secure latch hook (with two (2) mounting screws) to oven flange. 4. Make sure that the monitor switch is operating properly and check continuity of the monitor circuit. Refer to chapter "Test Procedure" and Adjustment procedure. DOORSENSINGSWITCH/PRIMARY INTERLOCKSWITCHANDMONITORSWITCHADJUSTMENT 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor.
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R-508HS Pin 9. Release the door panel from twelve (12) tabs of door frame. 10.Remove the door panel from the door frame. 11.Now, door panel with sealer film is free. 12.Tear sealer film from door panel. 13.Now, door panel is free. 14.Slide latch head upward and remove it from door frame with releasing latch spring from door frame and latch head. 15.Now, latch head and latch spring are free. 16.Remove door screen from door frame 17.Now, door frame is free. RE-INSTALL 1.
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1 2 COM. RY2 2 N.O. N.O. 3 17 COM. SECONDARY INTERLOCK RELAY T1 4 5 GRY COM. PRIMARY NO INTERLOCK SWITCH WHT WHT WHT E WHT TURNTABLE MOTOR BRN Figure S-1. Pictorial Diagram C/T FUSE RED WHT WHT ORG WHT FAN MOTOR MAGNETRON POWER TRANSFORMER H.V. RECTIFIER HIGH VOLTAGE WIRE A HIGH VOLTAGE CAPACITOR HIGH VOLTAGE COMPONENTS NOTE: Hot (ORG) wire must be connected to the terminal with blue mark on the oven light socket.
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DOOR SENSING SWITCH B-2 B-1 COM POWER TRANSFORMER AC(H) NO COM 2 WH-1 AC(N) NO OVEN LAMP TURNTABLE MOTOR FAN MOTOR 1 WH-1 d b 0.1uF 50V C1 RY1 DU12D1-1P(M)-R c (J1) VRS1 10G471K a T1 RY2 DU12D1-1P(M)-R D7 NOTE D31 1SS270A D30 1SS270A D8 1SS270A 1SS270A C2 D6 Q4 DTA123JS 10u/35V C5 DTD143ES Q3 SP1 47uF/16V DOOR M NL COM BZ BL -5 V R12 15K CPU UNIT Q20 DTA143EKA (F) Q30 DTA143EKA 0.
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R-508HS 1 2 4 3 5 6 A A B B DIP CHIP SIDE C C J3 CN-F C10 R90 C4 1 2 3 LED D31 CN-B D D R3 R5 C5 R6 D8 WH-2 B1 2 E Q1 Q4 SP1 Q3 DZ1 E C B E C B J1 E Q2 E C B D30 2 1 J5 J6 2 1 WH-2 J2 D5 T1 R4 E D6 R2 R7 RY2 C1 R8 F F D1 D2 P S L1 D3 D4 VRS1 G G C2 D7 RY1 H H Figure S-5 .
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R-508HS PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. "§" MARK: PARTS DELIVERY SECTION. REF. NO. PART NO.
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R-508HS REF. NO. PART NO.
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R-508HS 2 1 4 3 6 5 OVEN AND CABINET PARTS 7-4 A A 7-4 7-7 2-3 7-8 B B 4-7 7-7 6-6 7-5 1-7 C C 1-4 7-8 4-6 7-3 7-6 1-11 D 1-5 4-8 D 7-6 4-2 7-4 1-8 4-9 E E 6-5 7-4 7-2 7-2 6-4 1-3 7-4 7-1 1-6 4-3 4-10 4-5 1-9 1-10 7-5 F 2-1 6-3 F 1-5 1-6 7-1 4-4 4-1 1-1 1-2 G G 7-4 7-4 2-2 2-2 7-4 2-2 4-11 2-2 H H 1 2 4 3 22 5 6
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R-508HS 2 1 4 3 6 5 CONTROL PANEL PARTS A A 3-2 3-1 3-6 B B 3-5 DOOR PARTS 3-4 3-3 C C 5-8 5-1 5-6 5-7 D D 5-2 5-5 E E 5-3 5-4 5-9 5-10 F F MISCELLANEOUS Items 5-9 & 5-10 are not included with assembly 5-1 or 5-2 6-1 6-2 G G 6-8 Actual wire harness may be different from illustration.
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R-508HS PACKING AND ACCESSORIES TOP PAD ASSEMBLY DOOR PROTECTION SHEET 6-4 TURNTABLE TRAY PLASTIC BAG ON TOP OF THE OVEN TRAY HOLDER 6-7 OPERATION MANUAL IN TO TH EO N VE Y VIT CA BOTTOM PAD ASSEMBLY 6-3 TURNTABLE SUPPORT PACKING CASE Non-replaceable items 24
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R-508HS COPYRIGHT © 2003 BY SHARP CORPORATION ALL RIGHTS RESERVED. 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. 2003 SHARP CORP. (4M2.00E) Printed in U.S.