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R-508FS

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

CPU UNIT CIRCUIT ................................................................................................................................................8

PARTS LIST ...........................................................................................................................................................9

PACKING AND ACCESSORIES ..........................................................................................................................13

S52M188R508FE

R-508FS

MICROWAVE OVEN

MODEL

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-508FS

This is a supplemental Service Manual for model R-508FS.

This model is quite simular to base models R-510FK/FW (S12M182R510FE).

Use this supplemental manual together with the base model Service Manual for complete operation and service information.

Summary of content (16 pages)

PAGE 1
R-508FS SUPPLEMENTAL SERVICE MANUAL S52M188R508FE MICROWAVE OVEN MODEL R-508FS R-508FS This is a supplemental Service Manual for model R-508FS. This model is quite simular to base models R-510FK/FW (S12M182R510FE). Use this supplemental manual together with the base model Service Manual for complete operation and service 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.
PAGE 2
R- 508FS 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.
PAGE 3
R- 508FS 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.
PAGE 4
R-508FS 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.
PAGE 5
R- 508FS SUPPLEMENTAL SERVICE MANUAL PRODUCT DESCRIPTION MICROWAVE OVEN R-508FS 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-508FS. The model R-508FS is quite similar to base models R-510FK/FW (Ref.
PAGE 6
R-508FS 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.
PAGE 7
R- 508FS 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.
PAGE 8
R-508FS TEST PROCEDURES COMPONENT TEST 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. Isolate the key unit with the control panel frame to be tested. 5. Using an ohmmeter and referring to the key unit matrix indicated on the control unit circuit, check the circuit between the pins of the key unit that correspond to the STOP/CLEAR pad.
PAGE 9
R- 508FS TEST PROCEDURES PROCEDURE LETTER K COMPONENT TEST RELAY 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. Disconnect the leads to the primary of the power transformer. 5. Ensure that these leads remain isolated from other components and oven chassis by using insulation tape. 6. After that procedure, re-connect the power supply cord. 7.
PAGE 10
R-508FS A B C D E F G H LIQUID C R Y S T AL DIS P LAY R 7 15k S E G1 S E G2 S E G3 S E G4 S E G5 S E G6 S E G7 S E G8 S E G9 S E G10 S E G11 S E G12 S E G13 S E G14 S E G15 S E G16 S E G17 S E G18 S E G19 S E G20 S E G21 S E G22 COM3 COM2 C0M1 50 20 45 25 65 41 40 80 15 8 6 5 9 NOT E 10 R 69 15k : IF NOT S P C IF IE D, 1/16W ± 5% 4 3 2 S T AR T 5 T IME R C LOC K 9 3 6 R 60 15k R 61 15k R 62 15k R 63 15k R 64 15k R 65 15k R 66 15k 7 2 1 5 5 R 68 15k R 67 15k R 4
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R- 508FS 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.
PAGE 12
R-508FS REF. NO. PART NO.
PAGE 13
R- 508FS 2 1 4 3 6 5 OVEN AND CABINET PARTS 7-8 A A 7-8 7-6 2-3 7-9 B B 4-7 7-6 6-7 7-5 1-9 C C 1-5 7-9 4-6 7-3 1-13 D 4-8 1-8 7-6 1-6 7-7 D 4-2 7-4 E 4-9 1-10 6-6 7-2 6-3 1-4 7-2 6-5 7-4 1-11 F 1-12 7-5 F 1-6 4-11 2-1 6-4 4-5 7-1 1-7 4-3 4-10 E 1-3 1-7 7-1 4-4 4-1 1-1 1-2 G G 7-4 7-4 2-2 2-2 7-4 2-2 4-12 2-2 H H 1 2 4 3 11 5 6
PAGE 14
R-508FS 2 1 4 3 6 5 CONTROL PANEL PARTS A A 3-2 3-1 3 -5 3-4 3-3 3-6 3-2-1 B B DOOR PARTS 3-2-3 C C 5-9 3-2-2 5-6 D D 5-4 5-5 5-10 E E 5-7 5-1 5-11 5-8 F F MISCELLANEOUS 5-2 G 6-1 5-3 G 6-2 6-9 Actual wire harnes s may be different from illus tration.
PAGE 15
R- 508FS PACKING AND ACCESSORIES TOP PAD ASSEMBLY DOOR PROTECTION SHEET 6-5 TURNTABLE TRAY PLASTIC BAG ON TOP OF THE OVEN TRAY HOLDER 6-8 OPERATION MANUAL IN TO TH 6-4 TURNTABLE SUPPORT PACKING CASE Non-replaceable items 13 EO N VE Y VIT CA BOTTOM PAD ASSEMBLY
PAGE 16
R-508FS COPYRIGHT © 2002 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. 2002 SHARP CORP. (2M2.20E) Printed in U.S.