Panasonic NN-A813AB User manual

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ServiceManual
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MOP0307006C2
MicrowaveOven
NNA813AB
NNA873SB
NNA883WB
32Litre
EPGEurope
©1995MatsushitaElectricIndustrialCo.,Ltd.Allrightsreserved.Unauthorizedcopyinganddistributionisa
violationoflaw.

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1InverterWarning
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TheinverterboardlookslikearegularPCB,however,thisPCBdrivesthemagnetrontubeusingveryhigh
voltagesandcurrent.
Ithas
1.Veryhighvoltageandhighcurrent
2.AnAluminiumheatsinkthatbecomesveryhot
3.Thecapacitorsontheinvertercircuitwillcontainahighvoltagechargeevenwhentheovenisnot
operating.
Donot
1.Donottouchthecircuitryasitcontainsveryhighvoltages.Whenreplacingtheboardpleasetakeextreme
caretoavoidpossibleelectricshock.Highvoltagesmayremaininthecircuit.
2.Donottouchthealuminiumheatsinkasitwillbecomeveryhot.Italsocontainshighvoltages.
3.DonotattempttorepairtheinverterPCBasthiscanbeverydangerous.Replacethehighvoltageinverter
circuitasacompleteunit.Returntheoldunitfullyrepackedintheoriginalshippingboxandcompleted
paperwork.
4.Donotadjustortamperwiththepresetvolumeontheinverterboard.Itisverydangeroustoadjustthis
presetwithoutpropertestequipment.
5.Donottesttheovenwhiletheinvertergroundingstriporscrewsareloose.Itisverydangeroustooperate
theinvertercircuitboardwithoutapropergroundconnection.
Figure1

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InverterGounding
Figure2
InverterPCBlayout
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2FeatureChart
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Function A813ABEPG
Microwave 6
Grill 3
Convection 17
Combination YES
Sensorreheat 2
Sensorcook 2
Sensorcombination 4
Weightdefrost 3
Weightcombination 8
Weightreheat 
Weightcook 
Stagecooking 3
Delay/Stand YES
More/Less YES
Kg>lb/oz YES
Clock 12H
Wordprompt English
StepbyStep LED
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3ControlPanel
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4OperationAndDigitalProgrammerCircuitTest
Procdure
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