Sharp R-326FS User Manual

43
R-326FS
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 ............................................................................................................................10
TEST PROCEDURE ............................................................................................................................................12
TOUCH CONTROL PANEL .................................................................................................................................21
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 27
PICTORIAL DIAGRAM ........................................................................................................................................33
CONTROL UNIT CIRCUIT ..................................................................................................................................34
PRINTED WIRING BOARD .................................................................................................................................35
PARTS LIST ........................................................................................................................................................36
PACKING AND ACCESSORIES .........................................................................................................................40
S1301R326FPST
R-326FS
MICROWAVE OVEN
MODEL
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.

Sharp R-326FS Specifications

General

Brand	Sharp
Model	R-326FS
Category	Microwave Oven
Language	English

Summary

Microwave Oven Safety Precautions

Microwave Energy Exposure Precautions

Guidelines for safe servicing to prevent microwave energy exposure.

Service Personnel High Voltage Warnings

Critical safety steps and warnings before performing any servicing or testing.

Microwave Measurement and Operation Procedures

Microwave Leakage Measurement Procedure

Steps for testing microwave radiation leakage from the oven.

Oven Operating Sequences and Modes

Description of oven functions during off, cooking, and sensor modes.

Component Function Descriptions

Component Function Descriptions

Explanation of the roles of door mechanisms, switches, motors, and thermal cut-outs.

Touch Control Panel Assembly Details

Outline of the touch control panel, detailing the functions of its units.

LSI Signal Description

Detailed table of LSI pin assignments, signals, and their descriptions.

Absolute Humidity Sensor Circuit Analysis

Explanation of the sensor's structure, operational principle, and detector circuit.

Troubleshooting and Component Testing

Troubleshooting Guide and Initial Checks

Guidance for diagnosing common oven problems and performing initial checks.

Test Procedure Overview and Mapping

Table correlating common problems with specific test procedures for diagnosis.

Detailed Component Testing Procedures

Comprehensive tests for various oven components like magnetron, switches, and sensors.

Touch Control Panel Servicing and Replacement

Touch Control Panel Servicing Guide

Guidelines for handling electronic components, required tools, and general servicing precautions.

Component Replacement Procedures

Step-by-step instructions for removing and replacing major oven components.

System Schematics, Parts, and Accessories

Circuit Schematics and Wiring Diagrams

Technical diagrams illustrating oven circuitry and wiring connections.

Parts List and Diagrams

Identification of all parts with reference numbers and assembly diagrams.

Packing and Accessories Guide

Information on how the oven is packed and the included accessories.