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Sharp R-820BC Supplemental Service Manual

Double grill convection microwave oven.
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SUPPLEMENTAL SERVICE MANUAL
GRI LL
2
CO NV EC TIO N
This is a supplemental Service Manual for Model R-820BC. This model is quite similar to base model R-820BW. Use
this supplemental manual together with the Base Model Service Manual (Refer No. is S5812R820BPW/) for complete
operation, service information, etc..
BEFORE SERVICING ...................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL ................................................................................................................ 1
MICROWAVE MEASUREMENT PROCEDURE ................................................................................................... 2
FOREWORD AND WARNING ............................................................................................................................... 3
PICTORIAL DIAGRAM .......................................................................................................................................... 4
POWER UNIT CIRCUIT ........................................................................................................................................ 5
PARTS LIST .......................................................................................................................................................... 6
PACKING AND ACCESSORIES ........................................................................................................................... 8
SHARP CORPORATION
MODEL
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

This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
S2401R820BPW/
DOUBLE GRILL
CONVECTION
MICROWAVE OVEN
R-820BC
R-820BC
Page

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   Summary of Contents for Sharp R-820BC

  • Page 1: Table Of Contents

    Assembly, High Voltage Harness etc..) This is a supplemental Service Manual for Model R-820BC. This model is quite similar to base model R-820BW. Use this supplemental manual together with the Base Model Service Manual (Refer No. is S5812R820BPW/) for complete operation, service information, etc..
  • 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-820BC 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. (Example) High Voltage Capacitor, High Voltage Power Trans- former, Magnetron, High Voltage Rectifier Assem- bly, High Voltage Harness etc..
  • Page 4: Microwave Measurement Procedure

    R-820BC 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 5: Foreword And Warning

    MICROWAVE OVEN R-820BC FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVEN, R-820BC. The model R-820BC is quite similar to base model R-820BW (Refer No. is S5812R820BPW/).
  • Page 6: Pictorial Diagram

    NOTE: The neutral (WHT) wire must be connected to the terminal with "N" mark on the power supply cord. THERMISTOR POWER SUPPLY CORD GRILL HEATER THERMAL CUT-OUT (OVEN) CN-G CN-C DOOR SENSING SWITCH CN-D N.O. OVEN LAMP THERMAL & SOCKET CUT-OUT 1 BLK COM.
  • Page 7 R-820BC Q2 2SB1238 R4 27 D1-4 R5 4.7k 1N4002 AC120V 60Hz R3 510 1/2w R2 510 1/2w BUZZER R6 3.3k FAN MOTOR FAN MOTOR CONVECTION CONVECTION MOTOR MOTOR N.O. OVEN LAMP TURNTABLE KRC243M MOTOR OVEN LAMP TURNTABLE MOTOR 10µ/35v BOTTOM N.O.
  • Page 8: Power Unit Circuit

    R-820BC PARTS LIST ∆ Note: The parts marked “ ” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. REF. NO. PART NO. DESCRIPTION Q'TY CODE ELECTRIC PARTS 1- 1 QSW-MA110WRE0 Secondary interlock switch / door sensing switch...
  • Page 9: Oven Parts

    R-820BC REF. NO. PART NO. DESCRIPTION Q'TY CODE 3- 7 XEPSD30P08XS0 Screw; 3mm x 8mm OVEN PARTS ∆ 4- 1 ************* Oven cavity (Not a replaceable part) ∆ 4- 2 PHOK-A106WRF0 Latch hook 4- 3 FDUC-A337WRK0 Air duct assembly 4- 4...
  • Page 10: 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 11 R-820BC OVEN AND CABINET PARTS 7-19 6-11 7-19 4-33 7-10 4-25 7-12 4-29 4-36 7-10 4-23 4-44 1-11 4-26 4-41 7-10 1-12 7-17 7-10 7-15 1-10 4-15 4-27 7-13 7-10 7-10 1-16 4-39 4-31 4-42 4-30 4-19 4-38 1-14 7-10...
  • Page 12 R-820BC CONTROL PANEL PARTS 3-3-3 3-3-4 DOOR PARTS 3-3-1 3-3-2 MISCELLANEOUS 6-10 Actual wire harness may be different from illustration. 2004 SHARP CORP. (2S1.700E) Printed in U.S.A...

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