Sharp R-1481

R-1480
R-1481
R-1482
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
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
TROUBLESHOOTING GUIDE ............................................................................................................................11
TEST PROCEDURE ............................................................................................................................................ 12
TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................21
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................26
PICTORIAL DIAGRAM ........................................................................................................................................34
CONTROL PANEL CIRCUIT ...............................................................................................................................35
PRINTED WIRING BOARD .................................................................................................................................36
PARTS LIST ........................................................................................................................................................37
PACKING AND ACCESSORIES .........................................................................................................................42
S3807R1480X//
R-1480
R-1481
R-1482
OVER THE RANGE
MICROWAVE OVEN
MODELS
SERVICE MANUAL
SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
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CUSTOM HELP
1 Coffee/tea
2 Roll/muffin, fresh
3 Roll/muffin, frozen
4 Hot cereal
5 Scrambled eggs

1 Dinner plate
2 Pasta/casserole
3 Frozen entree
4 Frozen snack
5 Pizza, slice
1 Baked potatoes
2 Fresh vegetables
3 Frozen vegetables
4 Rice
5 Ground meat
POPCORN
COMPU DEFROST
POWER
LEVEL
KITCHEN TIMER
CLOCK
MINUTE
PLUS
TURNTABLE
ON/OFF
STOP
CLEAR
START
TOUCH ON
WORK
LIGHT
NIGHT
LIGHT
FAN
HI/LO
BREAKFAST
COMPU COOK
SNACKS &

REHEAT

Sharp R-1481 Specifications

General

Brand	Sharp
Model	R-1481
Category	Microwave Oven
Language	English

Summary

Servicing Safety Precautions

Before Servicing

Essential steps before commencing any servicing procedures.

Warning to Service Personnel

Microwave Measurement Procedure

Leakage Test

Procedure for performing a closed-door leakage test.

Foreword

Product Specifications and General Information

Grounding Instructions

Explains the importance and method of grounding the oven.

Oven Operation

Operating Sequence Description

Details the steps involved in operating the microwave oven.

Oven Schematics

Oven Schematic - Off Condition

Electrical schematic of the oven in the OFF condition.

Oven Schematic - Cooking Condition

Electrical schematic of the oven in the COOKING condition.

Troubleshooting Guide

Component Testing Procedures

High Voltage Component Tests

Tests for Magnetron, Transformer, Rectifier, Capacitor, Thermal Cut-Out, Fuse.

Switch and Interlock System Tests

Tests for door sensing, secondary interlock, monitor switches, and monitor fuse.

Motor and Control Panel Tests

Tests for Hood Fan Motor, Touch Control Panel, and Relays.

Component Replacement and Adjustment

Safety Warnings for Replacement

Critical safety warnings before component replacement.

Component Removal Procedures

Instructions for removing various oven parts.

Door Assembly and Disassembly

Procedures for removing, disassembling, and adjusting the oven door.

Pictorial Diagram

Control Panel Circuit Diagram

Printed Wiring Board Diagram

Parts List

Major Component Lists

Lists of Electric, Cabinet, Control Panel, Oven, and Door parts.

Miscellaneous and Hardware Lists

Lists of miscellaneous items, screws, nuts, and washers.

Packing and Accessories