Sharp R-4A54

SHARF’ SERVICE MANUAL
S8206R4A54PJZ
MICROWAVE OVEN
Photo R-4A54
R-4A54B
In interests of user-safety the oven should be restored to its original
condition and only manufacturer original spare parts must be used.
(RD16701U)
This is a supplemental Service Manual for Modei R-4A54 etc.
Those models are quite similar to Base Model R-4A53 (Refer No. is S7106R3A53PJZ).
Use this supplemental manual together with the Base Model Service Manual.
Refer to the Base Model Service Manual for complete operation, service information, etc.
CRD17101lJ1
TABLE OF CONTENTS
GENERAL IMPORTANT INFORMATION
Page
......................................................................................................
1
CAUTION, MICROWAVE RADlATlON,WARNING
......................................................................................
1
PRODUCT SPECIFICATIONS
......................................................................................................................... 2
APPEARANCE VIEW
........................................................................................................................................ 3
SERVICING ........................................................................................................................................................
4
TEST PROCEDURE
...........................................................................................................................................
5
TOUCH CONTROL ASSEMBLY
COMPONENT
.....................................................................................................................
8
REPLACEMENT AND ADJUSTMENT PROCEDURE .....................................................
WIRING DIAGRAM
13
.......................................................................................................................................
PICTORIAL DIAGRAM
15
..................................................................................................................................
CONTROL PANEL CIRCUIT
17
.........................................................................................................................
PRINTED WIRING DIAGRAM
19
PARTS LIST
..................................................................................................................... 20
....................................................................................................................................................
21
SHARP CORPORATION

Sharp R-4A54 Specifications

General

Brand	Sharp
Model	R-4A54
Category	Microwave Oven
Language	English

Summary

General Important Information

Microwave Radiation Caution

Highlights safety precautions regarding microwave radiation exposure during servicing.

General Warning

Lists critical safety checks required before operating the oven after servicing.

Product Specifications

Appearance View

Touch Control Panel Overview

Identifies and describes the various keys and functions on the touch control panel.

Servicing Procedures

Service Personnel Safety Warnings

Details crucial safety warnings and precautions for service engineers working on microwave ovens.

Test Procedures

Microwave Output Power Test (2 Litre Load)

Procedure to measure microwave output power using a 2-litre water load.

Microwave Output Power Test (1 Litre Load)

Procedure to measure microwave output power using a 1-litre water load.

Printed Wiring Board Troubleshooting

Troubleshooting steps for open foil patterns on the printed wiring board.

Relay Test Procedure

Procedure for testing the operation of relays within the oven.

Touch Control Panel Assembly

Key Unit and Control Unit Description

Details the functions and signals of the Key Unit and Control Unit within the assembly.

LSI Description and Pinout

Component Replacement Procedures

Power Transformer Removal

Step-by-step guide for removing the power transformer.

Turntable Motor Removal

Step-by-step guide for removing the turntable motor.

Fan Motor Assembly Removal

Step-by-step guide for removing the fan motor assembly.

Oven Lamp Socket Removal

Step-by-step guide for removing the oven lamp socket.

Power Supply Cord Replacement

Procedure for replacing the power supply cord, specific to Australia model.

Switch Removal Procedures

Instructions for removing latch, stop, and monitor switches.

Pictorial Diagram (Australia Model)

Pictorial Diagram (New Zealand Model)

Control Panel Circuit Diagram

Printed Wiring Board Diagram

Parts List

Electrical Parts

Lists electrical components with part numbers and descriptions.

Cabinet Parts

Lists cabinet components with part numbers and descriptions.

Control Panel Parts

Lists components related to the control panel with part numbers.

Additional Parts Listings

Oven and Door Parts

Lists parts specific to the oven interior and doors.

Miscellaneous and Hardware

Miscellaneous Items

Lists miscellaneous items such as cook books, labels, and packing materials.

Screws and Washers

Lists various screws and washers used for assembly and repair.