Sears 721.80404400 User Manual

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정 판
삼 흥
정 판
DIVISION 22
BASIC FIELD MANUAL
FOR
MICROWAVE HOOD COMBINATION
MODEL 721.80402400 / 721.80402401 / 721.80402402
721.80409400 / 721.80409401 / 721.80409402
721.80404400 / 721.80404401 / 721.80404402
721.80403400 / 721.80403401 / 721.80403402
May, 2005
MODEL 721.80402
721.80409
721.80404
721.80403

Sears 721.80404400 Specifications

General

Category	Microwave Oven
Model Number	721.80404400
Brand	Sears
Capacity	0.9 cu. ft.
Color	White
Child Safety Lock	Yes
Voltage	120V
Frequency	60Hz
Defrost Function	Yes

Summary

DIVISION 22

Foreword

Specifications

Installation

Installation Precautions and Grounding

Safety and electrical grounding guidelines for installing the microwave oven.

Operating Instructions

Control Panel Overview

Diagram and layout of the microwave's control panel buttons.

Control Panel Functions

Circuit Diagrams

Overall and Schematic Diagrams

Visual representation of the microwave's electrical components and connections.

General Service Information

Service Precautions and Trial Operation

Guidelines for safe operation and initial testing of the microwave oven.

Service Information and Tips

Precautions and Repair Tips

Important safety advice and general tips for servicing the microwave oven.

Microwave Leakage Test

Leakage Test Equipment and Procedure

Lists required equipment and outlines the method for testing microwave leakage.

Power Output Measurement

Disassembly Instructions

Removing Power and Control Circuit Board

Step-by-step guide to remove the main control circuit board.

F.P.C. Connector Handling

Removing the Outer Case

Removing Door Interlock Switches

Magnetron and Stirrer Fan Removal

Door and Ventilation Fan Removal

Turntable Motor Removal

Interlock System

Adjustment and Latch Closing Procedures

Steps to adjust door latches and interlock switches for proper operation.

Testing Latch and Switch Sequence

Interlock Continuity Test

Switch Continuity Testing

Procedures to test the continuity of interlock switches using an ohmmeter.

Test and Troubleshooting Procedures

Component Test Procedures

Step-by-step testing of various electrical components like transformer and magnetron.

Checkout Procedures

Troubleshooting Common Problems

Power and Display Issues

Diagnosing problems related to power supply and display functionality.

Heating and Operational Issues

Door Parts Diagram

Controller Parts Diagram

Oven Cavity Parts Diagram

Latch Board Parts Diagram

Interior Parts (I) Diagram

Interior Parts (II) Diagram

Installation Parts Diagram