Overview of the Microwave System 29
Capacitors 29
Testing a Capacitor 29
Filament Transformers 29
Wiring the Filament Transformers 29
High-Voltage Transformers 30
Wiring the High-Voltage Transformers 30
Testing a Filament or High-Voltage Transformer 30
High-Voltage Diodes 30
Testing a High-Voltage Diode 31
Magnetrons 32
Testing a Magnetron for an Open/Shorted Filament 32
Stirrer Motor and Assembly 32
Wave Guides 32
Troubleshooting 32
Overview of the Control System 33
Control Board 33
Display 33
Electrical Compartment Cooling Fans 33
Electrical Compartment Cooling Fan Thermostat 33
Electrical Compartment Thermocouple 33
EMI Filter 33
Fuses 33
High-Limit Thermostat 34
Keypad 34
Magnetron Cooling Fans 34
Magnetron Thermostats 34
Power Supply 34
Relay - K1 Filament 34
Relay - K2 Anode 34
Relay - K3 Monitor 34
Relay - K6 Voltage 34
Relay - K7 Magnetron Cooling Fan 35
Relay - K8 Stirrer Motor 35
RTD 35
Smart Card Reader 35
Solid State Relay - K4/K5 Heater 35
Speaker 35
USB Port 35
Voltage Sensor 35
Wire Harness 35
Troubleshooting 35
Overview of the Filtering System 36
Catalytic Converter 36
Drain Pan 36
Air Filter 36
Vent Catalyst 36
Troubleshooting 36