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General| Brand | Sears |
|---|---|
| Model | 721.80524500 |
| Category | Microwave Oven |
| Language | English |
Safety precautions for service technicians to prevent exposure to microwave energy.
Warnings regarding microwave energy exposure during operation and servicing.
Guidelines and safety measures for installing the microwave oven.
Procedures and importance of grounding the appliance for electrical safety.
Overview of the control panel layout and basic operational functions.
Important safety guidelines for using the microwave oven correctly and safely.
Step-by-step procedure for checking the microwave oven's functionality after installation.
Essential safety warnings and advice for performing repairs on the microwave oven.
Critical warnings and responsibilities related to microwave leakage testing during servicing.
Procedure and equipment for measuring microwave radiation levels from the oven.
Specific instructions for measuring leakage after outer case removal.
Instructions for measuring leakage on a fully assembled oven.
Method for measuring the microwave power output using a water load.
Step-by-step guide to safely remove the main control circuit board.
Procedure for safely removing the external casing of the microwave.
Instructions for removing the critical safety interlock switches from the door mechanism.
Procedures for removing key internal components like magnetron and stirrer fan.
Instructions for door operations and removing the ventilation fan assembly.
Steps for removing the motor that rotates the turntable.
Instructions for removing and replacing the humidity sensor.
Procedures for adjusting door latches and interlock switches to ensure safety.
Steps to inspect and verify the proper closing and alignment of door latches and switches.
Procedure to test the sequential operation of interlock switches when the door opens/closes.
Final verification of microwave energy leakage after adjustments.
Method to test the continuity of the primary interlock switch.
Method to test the continuity of the secondary interlock switch.
Method to test the continuity of the interlock monitor switch.
Critical safety warnings before performing tests and troubleshooting.
Step-by-step tests for key components like the transformer and magnetron.
Common causes and troubleshooting steps for fuse blowing issues.
Troubleshooting common relay issues with fan motor and oven lamp.
Symptoms indicating a defective main circuit board.
Troubleshooting for issues related to power supply and initial display setup.
Troubleshooting for the unit not heating up despite countdown.
Troubleshooting for the absence of buzzing sound at the end of cooking or between stages.
Troubleshooting steps for the ventilation fan not operating when the ON/OFF key is pressed.
Exploded diagram of the door assembly and its individual parts.
Exploded diagram of the controller unit and its components.
Exploded diagram of the main oven cavity components.
Exploded diagram of the latch board mechanism and its parts.
Exploded diagram of some internal components of the oven.
Exploded diagram of other internal components of the oven.
Exploded diagram showing parts related to the installation process.
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