Sharp R-1850 User Manual

R-1850
R-1851
S6804R1850X//
OVER THE RANGE
MICROWAVE OVEN
MODELS
R-1850
R-1851
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.
SERVICE MANUAL
SHARP ELECTRONICS CORPORATION
Service Headquarters: Sharp Plaza, Mahwah, New Jersey 07430-2135
TABLE OF CONTENTS
Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICE TO
AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ...................INSIDE FRONT COVER
BEFORE SERVICING ...........................................................................................................................................1
MICROWAVE MEASUREMENT PROCEDURE ...................................................................................................2
FOREWORD.......................................................................................................................................................... 3
PRODUCT SPECIFICATIONS .............................................................................................................................. 4
GENERAL INFORMATION................................................................................................................................... 4
OPERATION ..........................................................................................................................................................6
TROUBLESHOOTING GUIDE ............................................................................................................................14
TEST PROCEDURE ............................................................................................................................................16
TOUCH CONTROL PANEL .................................................................................................................................23
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................29
PICTORIAL DIAGRAM ........................................................................................................................................37
CONTROL PANEL CIRCUIT ...............................................................................................................................38
PRINTED WIRING BOARD .................................................................................................................................39
PARTS LIST ........................................................................................................................................................40
PACKING AND ACCESSORIES .........................................................................................................................46

Sharp R-1850 Specifications

General

Turntable	Yes
Frequency	60 Hz
Capacity	1.1 cu. ft.
Cooking Modes	Defrost, Reheat
Voltage	120V

Summary

Microwave Safety Precautions

Before Servicing

Steps and checks required before performing maintenance on the microwave oven.

Microwave Measurement Procedure

Procedure for measuring microwave radiation leakage from the oven.

Product Description

General Information

Basic operational and safety information for the microwave oven.

Operation

Troubleshooting and Test Procedures

Touch Control Panel

Component Replacement and Adjustment Procedure

Wiring Diagrams

Parts List

Specification

Pictorial Diagram

Touch Control Panel Circuit

Printed Wiring Board

Packing and Accessories