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Sears 721.80832500 - User Manual

Sears 721.80832500
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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

Table of Contents

Questions and Answers

  • T
    Tracy CoffeyJul 31, 2025
    What to do if my Sears 721.80832500 Microwave Oven fuse blows when the door is closed and START key is touched?
    • Z
      zbrownJul 31, 2025
      If the fuse blows when the door is closed and the START key is touched, it could be due to a malfunction in the high voltage transformer, the high voltage capacitor (including the diode), the magnetron, the blower motor, or the circuit board. Check for microwave energy leakage according to INTERLOCK ADJUSTMENT PROCEDURES on page 7-12 when the primary interlock, secondary interlock switches and/or the interlock monitor switches are adjusted or replaced.
  • S
    Sarah SmithAug 10, 2025
    What to do if my Sears 721.80832500 Microwave Oven fuse blows immediately after the door is closed?
    • J
      Julie BaileyAug 10, 2025
      If the fuse blows immediately after closing the door on your Sears Microwave Oven, it indicates improper operation of the primary interlock, secondary interlock switches, and/or the interlock monitor switch. If the fuse is blown by an improper switch operation, replace all switches and the fuse at the same time.
  • Q
    qwatkinsAug 20, 2025
    What to do if the oven lamp turns on when the door is closed and START key is touched in my Sears 721.80832500 Microwave Oven?
    • M
      Melissa Thomas DVMAug 20, 2025
      If the oven lamp turns on when the door is closed and the START key is touched in your Sears Microwave Oven, replace the oven lamp.

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

Sears 721.80832500 Specifications

General IconGeneral
BrandSears
Model721.80832500
CategoryMicrowave Oven
LanguageEnglish

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