Sharp R-1870 service manual SHARP ELECTRONICS CORPORATION sales service only, Table Of Contents

Page 1
SUPPLEMENTAL SERVICE MANUAL

R-1870

R-1871

SUPPLEMENTAL SERVICE MANUAL

S91M173R1870E

OVER THE RANGE

MICROWAVE OVEN

MODELS R-1870/R-1871

Model R-1870

This is a supplemental Service Manual for Models R-1870/R1871.

This model is quite similar to Base Model R-1850 (S/M# S6804R1850X//).

Use this supplemental manual together with the Base Model Service Manuals 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.

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

COMPONENT TEST

9

PICTORIAL DIAGRAM

10

LSI UNIT CIRCUIT

11

PARTS LIST

12

PACKING AND ACCESSORIES

18

This document has been published to be used for after

SHARP ELECTRONICS CORPORATION sales service only.

The contents are subject to change without notice.

Service Headquarters: Sharp Plaza, Mahwah, New Jersey, 07430-2135

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Contents TABLE OF CONTENTS SHARP ELECTRONICS CORPORATION sales service onlySUPPLEMENTAL SERVICE MANUAL Service Headquarters Sharp Plaza, Mahwah, New JerseyBEFORE SERVICING After repairing WARNING TO SERVICE PERSONNELDont Touch Danger High Voltage Before ServicingB. Preparation for testing MICROWAVE MEASUREMENT PROCEDUREA. Requirements C. Leakage testSHARP PLAZA, MAHWAH NEW JERSEY DANGERSERVICE MANUAL If provided, Vent Hood, Fan assembly, Cooling Fan MotorGENERAL INFORMATION SPECIFICATIONDESCRIPTION GROUNDING INSTRUCTIONSOVEN DIAGRAM OPERATION POWER LEVEL P-0 TO P-90 COOKINGDESCRIPTION OF OPERATING SEQUENCE OFF CONDITIONFigure O-1. Oven Schematic - Off Condition Figure O-2. Oven Schematic - Microwave Cooking ConditionNOTE RY2 and RY3 will alternately close during cook cycle Figure O-4. Oven Schematic - Automatic Mix cooking ConditionLETTER PROCEDURECOMPONENT TEST R KEY UNIT TESTHIGH VOLTAGE COMPONENTS Figure S-1. Pictorial Diagram8 7 0 8 7 R - 1 RR - 1 8 7 0 R - 1 8 7 Figure S-2. Touch Control Panel CircuitNote The parts marked “∆” may cause undue microwave exposure PARTS LISTELECTRIC PARTS CABINET PARTSCODE OVEN PARTSMISCELLANEOUS DOOR PARTSSCREWS,NUTS AND WASHERS HOW TO ORDER REPLACEMENT PARTSOrder Parts from the authrized SHARP parts Distributor for your area OVEN AND CABINET PARTS DOOR PARTS 6-2 INSTALLATION INSTRUCTION 6-7 COOK BOOK 6-3 OPERATION MANUAL PACKING AND ACCESSORIES6-1 INSTALL MATERIAL ASSEMBLY 4-1 EXHAUST DAMPER ASSEMBLY ACCESSORY PACK BOTTOM PADR - 1 8 7 R - 1 8 7 R - 1 8 7 R - 1 8 7 R - 1 8 7 R - 1 8 7 01 SHARP CORP. 9M2.60E Printed in U.S.A COPYRIGHT 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED
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R-1870 specifications

The Sharp R-1870, R-1871, R-1870BK, and R-1872 microwaves are advanced kitchen appliances designed for efficiency and convenience in meal preparation. These models are known for their innovative features and technologies that enhance everyday cooking.

One of the standout features of these microwaves is the integration of inverter technology. This groundbreaking technology allows for a consistent and even distribution of heat, ensuring that food is cooked thoroughly without overcooking or uneven hot spots. Unlike traditional microwave ovens, inverter technology provides a continuous power output, which is particularly beneficial for delicate foods like seafood, sauces, and sweets.

Another notable characteristic of the Sharp R-1870 series is its spacious interior. With a generous capacity, these microwaves can accommodate large dishes, making them ideal for family meals or batch cooking. The flexible turntable adjustment allows users to maximize interior space for various dish sizes.

The R-1870 series also features sensor cooking technology. This intelligent system detects moisture released by the food during cooking and automatically adjusts cooking times and power levels. This ensures optimal cooking results without the need for constant monitoring, saving time and effort in the kitchen.

User convenience is further enhanced by the user-friendly control panel, which includes pre-programmed settings for popular dishes. This simplifies the cooking process, allowing users to prepare meals with the push of a button. The models also feature a large, easy-to-read display that shows cooking settings and times, making operation straightforward.

In terms of design, the Sharp R-1870 models come in various finishes, including sleek black and stainless steel options, to complement modern kitchen aesthetics. The units are compact, making them suitable for countertops with limited space.

Safety features, such as child lock functionality and a time countdown, are also integral to the design of these microwaves. This adds peace of mind for families with young children or for those who multitask in the kitchen.

All in all, the Sharp R-1870, R-1871, R-1870BK, and R-1872 microwaves represent a fusion of technology and practicality, catering to the needs of today’s busy home cooks. With their inverter cooking capabilities, sensor technology, and spacious designs, these models are a smart addition to any kitchen, making meal preparation easier and more enjoyable.