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General| Category | Microwave Oven |
|---|---|
| Model Number | 721.67902600 |
| Power Output | 1000 Watts |
| Control Type | Electronic Touch |
| Cooking Modes | Defrost, Reheat, Popcorn, Potato |
Guidelines to avoid excessive microwave energy exposure during servicing.
Ensuring only qualified personnel perform service on the oven.
Details the switch modes and their conditions for operation.
Specific warnings regarding microwave radiation during operation and repair.
Step-by-step instructions for installing the microwave oven.
Essential safety instructions for proper grounding of the appliance.
Overview of the oven's features and control panel layout.
Covers clock setting, timers, start/pause, child lock, warm hold, and more/less functions.
Details on micro cooking and multi-stage cooking sequences.
Procedures for sensor cooking, auto defrost, and auto bake/roast.
Instructions for convection and combination cooking modes.
Explanation of low voltage supply and general circuit operation.
Description of circuit behavior during start, door operation, and convection cooking.
List of necessary tools and instruments for servicing the microwave.
Procedures and precautions for testing microwave leakage.
Methods for measuring microwave leakage with outer case removed or assembled.
Important notes for accurate measurements and special handling tips.
Procedure for measuring the oven's microwave power output.
Instructions for safely disassembling and adjusting oven components.
Steps for removing the PCB assembly and the oven door.
Procedures for removing the air duct assembly and the magnetron.
Steps for removing key internal components like motors and HV parts.
Details on the interlock system, its adjustment, and mounting switches.
Instructions for removing the oven sensor.
Resistance testing procedures for the HV transformer and magnetron.
Procedure for testing the resistance of the high voltage capacitor.
Testing the high voltage diode for short, forward, and reverse bias conditions.
Testing procedures for the fuse, convection heater, and fan motor.
Resistance testing for motors, thermistor, and continuity checks for relays.
Addresses issues like no power, low output, sparks, and uneven cooking.
Diagnosing problems related to display segments and input acceptance.
Troubleshooting fuse blow issues and power cord problems.
Diagnosing problems with starting the oven and fan/lamp operation.
Addressing scenarios where the oven produces little heat.
Troubleshooting convection indicator lights and oven cavity temperature.
Diagnosing problems with convection heater, circulation motor, and air duct.
Overview of the exploded view diagrams for oven parts.
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