Sharp R-1870 service manual Before Servicing

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BEFORE SERVICING

R-1870

R-1871

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.

(b)Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: (1) interlock operation (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse.

(c)Before turning on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections.

(d)Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is released to the owner.

(e)A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner.

BEFORE SERVICING

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.

Service personnel should inform SHARP ELECTRONICS CORPORATION of any certified unit found with emissions in excess of 4mW/cm2. The owner of the unit should be instructed not to use the unit until the oven has been brought into compliance.

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Contents SUPPLEMENTAL SERVICE MANUAL SHARP ELECTRONICS CORPORATION sales service onlyTABLE OF CONTENTS Service Headquarters Sharp Plaza, Mahwah, New JerseyBEFORE SERVICING Dont Touch Danger High Voltage WARNING TO SERVICE PERSONNELAfter repairing Before ServicingA. Requirements MICROWAVE MEASUREMENT PROCEDUREB. Preparation for testing C. Leakage testSERVICE MANUAL DANGERSHARP PLAZA, MAHWAH NEW JERSEY If provided, Vent Hood, Fan assembly, Cooling Fan MotorDESCRIPTION SPECIFICATIONGENERAL INFORMATION GROUNDING INSTRUCTIONSOVEN DIAGRAM DESCRIPTION OF OPERATING SEQUENCE POWER LEVEL P-0 TO P-90 COOKINGOPERATION OFF CONDITIONFigure O-2. Oven Schematic - Microwave Cooking Condition Figure O-1. Oven Schematic - Off ConditionFigure O-4. Oven Schematic - Automatic Mix cooking Condition NOTE RY2 and RY3 will alternately close during cook cycleCOMPONENT TEST PROCEDURELETTER R KEY UNIT TEST8 7 0 8 7 Figure S-1. Pictorial DiagramHIGH VOLTAGE COMPONENTS R - 1 RFigure S-2. Touch Control Panel Circuit R - 1 8 7 0 R - 1 8 7ELECTRIC PARTS PARTS LISTNote The parts marked “∆” may cause undue microwave exposure CABINET PARTSOVEN PARTS CODEDOOR PARTS MISCELLANEOUSOrder Parts from the authrized SHARP parts Distributor for your area HOW TO ORDER REPLACEMENT PARTSSCREWS,NUTS AND WASHERS OVEN AND CABINET PARTS MISCELLANEOUS 6-1 INSTALL MATERIAL ASSEMBLY 4-1 EXHAUST DAMPER ASSEMBLY PACKING AND ACCESSORIES6-2 INSTALLATION INSTRUCTION 6-7 COOK BOOK 6-3 OPERATION MANUAL 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 COPYRIGHT 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED 01 SHARP CORP. 9M2.60E Printed in U.S.A
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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.
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