HOW IT WORKS ....................................................................................................................................... 56
MICROWAVE PROTECTION SYSTEM .............................................................................................................. 56
DOOR AND DOOR SWITCHES ...................................................................................................................... 57
DOOR SWITCHES ...................................................................................................................................... 58
DOOR SWITCH ADJUSTMENTS .................................................................................................................... 59
COMPONENTS ......................................................................................................................................... 61
MICROWAVE SEALS AND GASKETS ............................................................................................................... 72
TESTING FOR MICROWAVE LEAKAGE ............................................................................................................ 74
IMPINGEMENT SYSTEM ........................................................................................ 75
BLOWER MOTOR ..................................................................................................................................... 76
TESTING BLOWER MOTOR ......................................................................................................................... 76
FREQUENCY INVERTER (WEG CFW 100) ..................................................................................................... 77
FREQUENCY INVERTER TROUBLESHOOTING .................................................................................................... 78
HIGH LIMIT THERMOSTAT .......................................................................................................................... 81
TESTING HIGH LIMIT THERMOSTAT .............................................................................................................. 81
CONVECTION HEATER ............................................................................................................................... 82
TESTING CONVECTION HEATER ................................................................................................................... 82
IR ELEMENT ............................................................................................................................................ 83
TESTING IR ELEMENT ................................................................................................................................ 83
CC/IR TEMPERATURE SENSORS .................................................................................................................. 84
TESTING TEMPERATURE SENSORS ................................................................................................................ 84
CONTROL SYSTEM ................................................................................................. 87
MAIN CONTROL BOARD/DISPLAY ................................................................................................................ 88
TESTING POWER MODULE BOARD ............................................................................................................... 89
SPEAKER ................................................................................................................................................. 90
TESTING THE SPEAKER ............................................................................................................................... 90
POWER COMPONENTS ......................................................................................... 91
EMI FILTER ............................................................................................................................................. 92
TESTING EMI FILTER ................................................................................................................................. 92
12VDC POWER SUPPLY ............................................................................................................................ 93
TESTING POWER SUPPLY............................................................................................................................ 93
VENTILATION SYSTEM ............................................................................................................................... 94
TESTING COOLING FANS ............................................................................................................................ 94
TESTING CONTROL SYSTEM FUSES ............................................................................................................... 95
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