Sharp R-4H55 User Manual

WH5.5
R-4X55
ls4x55a
SHARP SERVICE MANUAL
S9312R4X55PJZ
MICROWAVE OVEN
R-4H55
MODELS Rm4H55
R-4X55
Rm4X55B
In interests of user-safety the oven should be restored to its original condi-
tion and only parts identical to those specified should be used.
TABLE OF CONTENTS
GENERAL IMPORTANT INFORMATION
we
......................................................................................................
WARNING
......................................................................................................................................................
.
RODUCT SPECIFICATIONS
.........................................................................................................................
2
APPEARANCE VIEW
....................................................................................................................................
3
OPERATING SEQUENCE
.............................................................................................................................
FUNCTION OF
IMPORTANT COMPONENTS’
............................................................................................
.;
TRABLESHOOTING CHART ......................................................................................................................... 7
TEST PROCEDURE ....................................................................................................................................
10
TOUCH CONTROL PANEL
........................................................................................................................
.20
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
.......................................................
.27
MICROWAVE MEASUREMENT
.................................................................................................................
.30
WIRING DIAGRAM
......................................................................................................................................
34
PICTORIAL DIAGRAM
...............................................................................................................................
.36
CONTROL PANEL CIRCUIT
......................................................................................................................
.38
PRINTED WIRING BOAD
............................................................................................................................
40
PARTS LIST ............
. ...................................................................................................................................
41
SHARP CORPORATION

Sharp R-4H55 Specifications

General

Brand	Sharp
Model	R-4H55
Category	Microwave Oven
Language	English

Summary

GENERAL IMPORTANT INFORMATION

CAUTION MICROWAVE RADIATION

Warning about exposure to microwave energy during servicing.

WARNING

Essential safety checks before operating the oven.

PRODUCT SPECIFICATIONS

APPEARANCE VIEW

OPERATION SEQUENCE

FUNCTION OF IMPORTANT COMPONENTS

SERVICING AND TROUBLESHOOTING

Service Personnel Warnings

Critical safety warnings for personnel handling microwave ovens.

Troubleshooting Guide

Guidance on identifying and resolving common microwave oven problems.

TEST PROCEDURES

Component Testing

Procedures for testing various components like magnetron, transformer, motors, sensors, and switches.

TOUCH CONTROL PANEL ASSEMBLY OUTLINE

Key Unit and Control Unit Functions

Describes functions of key unit and circuits within the control unit.

ABSOLUTE HUMIDITY SENSOR CIRCUIT

Sensor Structure, Principle, and Detector Circuit

Details sensor structure, principle, and its detector circuit.

WEIGHT SENSOR CIRCUIT

SERVICING THE TOUCH CONTROL PANEL

Component Handling and Tools

Precautions for handling components and list of servicing tools.

COMPONENT REPLACEMENT PROCEDURES

Removal Procedures

Steps for removing outer case, transformer, magnetron, lamps, motors, and switches.

Door Replacement and Adjustment

Steps for replacing and adjusting the oven door.

MICROWAVE MEASUREMENT

WIRING DIAGRAMS

Oven Schematics (Australia & NZ Models)

Schematic diagrams for Australian and New Zealand models.

PICTORIAL DIAGRAMS

Component Connection Diagrams

Visual representations of component connections for Australia and NZ models.

CONTROL PANEL CIRCUIT

PRINTED WIRING BOARD

PARTS LIST

Component Categories

Lists electrical, cabinet, control panel, door, and miscellaneous parts.

Miscellaneous and Hardware

Lists miscellaneous items, screws, nuts, and washers.