Sears 721.80832500 User Manual

삼 흥
정 판
DIVISION 22
BASIC FIELD MANUAL
FOR
MICROWAVE HOOD COMBINATION
MODEL 721.80832500
721.80833500
721.80834500
721.80839500
May, 2005
MODEL 721.80832
721.80833
721.80834
721.80839

Sears 721.80832500 Specifications

General

Brand	Sears
Model	721.80832500
Category	Microwave Oven
Language	English

Summary

BASIC FIELD MANUAL FOR MICROWAVE HOOD COMBINATION

SERVICE TECHNICIAN SAFETY CAUTIONS

MICROWAVE ENERGY EXPOSURE PRECAUTIONS

Safety guidelines to avoid exposure to microwave energy during servicing.

GENERAL CAUTIONS AND WARNINGS

MICROWAVE RADIATION HAZARDS

Information on potential hazards and precautions related to microwave radiation.

OPERATING INSTRUCTIONS

CIRCUIT DIAGRAMS

OVERALL CIRCUIT DIAGRAM

SCHEMATIC DIAGRAM

SERVICE PRECAUTIONS AND REPAIR TIPS

MICROWAVE LEAKAGE TESTING

MEASURING MICROWAVE ENERGY LEAKAGE

Detailed steps for accurately measuring microwave radiation levels.

POWER OUTPUT MEASUREMENT

MEASUREMENT WITH OUTER CASE REMOVED

MEASUREMENT WITH FULLY ASSEMBLED OVEN

DISASSEMBLY INSTRUCTIONS

REMOVING POWER AND CONTROL CIRCUIT BOARD

REMOVING THE OUT CASE

REMOVING DOOR INTERLOCK SWITCHES

REMOVING THE MAGNETRON

Detailed steps for carefully removing the magnetron assembly.

INTERLOCK SYSTEM ADJUSTMENT AND TESTING

INTERLOCK SYSTEM MECHANISM DESCRIPTION

Explanation of the door interlock mechanism and its safety function.

LATCH AND SWITCH SEQUENCE TESTING

Testing the correct sequence of operation for interlock switches.

ADJUSTMENT PROCEDURES FOR LATCHES AND SWITCHES

Procedures for adjusting door latches and interlock switches for proper operation.

MICROWAVE ENERGY LEAKAGE TESTING

Final testing of microwave leakage after adjustments, with specific limits.

DOOR LATCH AND SWITCH CLOSING CHECKS

Steps to check the alignment and closing sequence of door latches and switches.

INTERLOCK SWITCH CONTINUITY TESTS

PRIMARY INTERLOCK SWITCH TEST

Procedure to test the primary interlock switch for continuity.

SECONDARY INTERLOCK SWITCH TEST

Procedure to test the secondary interlock switch for continuity.

MONITOR SWITCH CONTINUITY TEST

Procedure to test the monitor switch for continuity.

COMPONENT TESTS AND TROUBLESHOOTING

TRANSFORMER AND MAGNETRON TESTS

Tests for transformer and magnetron resistance and continuity.

CHECKOUT PROCEDURES

FUSE BLOWING CHECKOUT

Troubleshooting steps for diagnosing and resolving fuse blowing issues.

RELAY AND MOTOR CHECKOUT PROCEDURES

Checkout procedures for relay operations and motor functions.

CIRCUIT BOARD CHECKOUT PROCEDURES

TROUBLESHOOTING GUIDE

TROUBLESHOOTING: SET TIME OF DAY DISPLAY

TROUBLESHOOTING: START FUNCTION FAILURE

TROUBLESHOOTING: NO HIGH POWER HEATING

TROUBLESHOOTING: NO BUZZER SOUND

TROUBLESHOOTING: DISPLAY PROBLEMS

TROUBLESHOOTING: NO HEATING

TROUBLESHOOTING: VENTILATION FAN FAILURE