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5.AlignmentandAdjustments - MSA20M - MSB22MX
5-1HighVoltageTransformer
1.Removeconnectorsfromthetransformerterminals
andcheckcontinuity.
2.Normalresistancereadingsareasfollows:
(Roomtemperature=20°C)
5-2Magnetron
1.Continuitycheckscanindicateonlyanopen
filamentorashortedmagnetron.Todiagnosean
openfilamentorshortedmagnetron.
2.Isolatethemagnetronfromthecircuitby
disconnectingitsleads.
3.Acontinuitycheckacrossthemagnetronfilament
terminalsshouldindicateoneohmorless.
4.Acontinuitycheckbetweeneachfilamentterminal
andmagnetroncaseshouldreadopen.
Primary
Terminals
FilamentTerminals
Secondary
Terminal
MagnetronAntenna
GasketPlate
CoolingFins
PRECAUTION
1.Highvoltageispresentatthehighvoltageterminalsduringanycookcycle.
2.Itisneithernecessarynoradvisabletoattemptmeasurementofthehighvoltage.
3.Beforetouchinganyovencomponentsorwiring,alwaysunplugtheovenfromitspowersourceand
dischargethehighvoltagecapacitor.
Secondary
Filament
Primary
Approx.139
Approx.0
Approx.1.94
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