Panasonic NN-S573MF User manual

ORDERNO.SIMMC0303014A3
MicrowaveOven
NN-T583SF / NN-S573MF / NN-S563WF / NN-S553WF / NN-
S543WF
QPQ(Australia&New Zealand)
Please fileand use thismanual togetherwiththeservice manual for
Model NN-S560WF(ORDERNO. SIMMC0006012C3)
SPECIFICATIONS
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2003 Shanghai Matsushita MicrowaveOvenCo., Ltd. / All rights
reserved. Unauthorizedcopying and distribution isaviolation of
law.
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1. SCHEMATICDIAGRAM
2. CAUTIONS TO BE OBSERVED WHEN
TROUBLESHOOTING
Unlike manyotherappliances, themicrowave ovenisahigh voltage, high currentdevice. Itis
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free from dangerinordinaryuse, though extremecareshouldbetakenduring repair.
Caution
Servicemenshouldremovetheirwatches wheneverworking close
toorreplacing themagnetron.
2.1. Check thegrounding
Donotoperateon atwowireextension cord. Themicrowave ovenisdesignedtobegrounded
whenused. Itisimperative, therefore, toensuretheappliance isproperlygroundedbefore
beginning repairwork.
2.2. Inverterwarnings
DANGER, HIGHVOLTAGE AND HIGHTEMPERATURE (HOT/LINE)OFTHE INVERTERPOWER
SUPPLY(U)
Thishigh voltageinverterpowersupplyhandles veryhigh voltage
and currentforthemagnetron tube. Though itisfree fromdangerin
ordinaryuse, extremecareshouldbetakenduring repair.
Thealuminumheat sinkisalsoenergizedwithhigh voltage(HOT),
sodo nottouchwhentheACinputterminalsareenergized. The
powerdevices Collectorisdirectlyconnectedtothealuminumheat
sink.
Thealuminumheat sinkmaybeHOTduetoheat energy, therefore,
extremecareshouldbetakenduring servicing.
H.V. Inverterwarning
WARNINGFORINVERTERPOWERSUPPLY(U) GROUNDING
Check thehigh voltageinverterpowersupplycircuitgrounding. The
high voltageinverterpowersupplycircuitboardmust haveaproper
chassisground, theinvertergrounding bracket must beconnected
tothechassis. Iftheinverterboardisnotgroundeditwill expose
theusertoveryhigh voltages and cause extremeDANGER!Besure
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that theinvertercircuitisproperlygroundedviatheinverterearth
bracket.
Grounding oftheinvertercircuitboard
WARNING!DISCHARGE THE HIGHVOLATGE CAPACITORS
Forabout30 secondsaftertheovenisturnedoff, anelectriccharge
remainsinthehigh voltagecapacitorsintheinverterpowersupply
circuitboard.
Whenreplacing orchecking parts, removethepowerplug fromthe
outlet and shorttheinverteroutputterminal ofthemagnetron
filamentterminalstothechassisground withaninsulatedhandle
screwdrivertodischarge. Please besuretotouchthechassis
ground sidefirst and thenshorttotheoutputterminals.
Discharging thehigh voltagecapacitors
WARNING
Thereishigh voltagepresentwithhigh currentcapabilities inthe
circuits oftheprimaryand secondarywindings, choke coil and heat
sinkoftheinverter. Itisextremelydangeroustoworkon ornear
these circuits withtheovenenergized. DO NOTmeasurethevoltage
inthehigh voltagecircuitincluding thefilamentvoltageofthe
magnetron.
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WARNING
Nevertouchanycircuitwiring withyourhand orwithaninsulated
tool during operation.
2.3. Partreplacement.
Whenanypartor componentistobereplaced, always ensurethatthepowercord isremoved
from thewall outlet.
2.4. Whenthe10Afuse isblownduetotheoperation oftheshort
switch:
WARNING
Whenthe10A250Vfuse isblownduetotheoperation ofthe
interlock monitorswitch, replace all ofthecomponents (primary
latchswitch, doorswitch, shortswitchand powerrelayB(RY1)).
1. Thisismandatory. Referto“adjustments and measurements”for
thelocation ofthese switches.
2. Whenreplacing thefuse, confirm that ithas theappropriate rating
forthese models.
3. Whenreplacing faultyswitches, besurethemounting tabsarenot
bent, brokenordeficientintheirabilitytoholdtheswitches.
2.5. Avoidinserting nails, wireetc. through anyholes intheunit
during operation.
Neverinsertawire, nail or anyothermetal objectthrough thelampholes on thecavityor any
holes or gaps, because suchobjectsmay workas anantennaand cause microwave leakage.
2.6. Confirm afterrepair
1. Afterrepairorreplacementofparts, make surethat thescrewsof
theoven, etc. areneitherloose normissing. Microwaves might
leak ifscrewsarenotproperlytightened.
2. Make surethat all electrical connectionsaretightbeforeinserting
theplug intothewall outlet.
3. Check formicrowaveenergyleakage. (Refertoprocedurefor
measuring microwaveenergyleakage).
CAUTIONMICROWAVE RADIATION
USE CAUTIONNOTTO BECOMEEXPOSEDTO RADIATIONFROM
THEMICROWAVE MAGNETRONOROTHERPARTSCONDUCTING
MICROWAVE ENERGY
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IMPORTANTNOTICE
Thefollowing components havepotentialsabove2000Vwhilethe
appliance isoperated.
-Magnetron
-High voltagetransformer(Locatedon inverter(U))
-High voltagediodes (Locatedon inverter(U))
-High voltagecapacitors(Locatedon inverter(U))
Payspecial attention tothese areas.
Whentheappliance isoperatedwiththedoorhinges ormagnetron
fixedincorrectly, themicrowaveleakagecanexceedmorethan5mW
/cm2. Afterrepairorexchange, itisveryimportanttocheck ifthe
magnetron and thedoorhinges arecorrectlyinstalled.
2.7. Sharpedges
Caution
Please use caution whenunpacking, installing ormoving theunit,
as someexposededges maybesharptothetouchand cause injury
ifnothandledwithcare.
3. MEASUREMENTSAND ADJUSTMENTS
3.1. Adjustmentofprimarylatchswitch, secondarylatchswitchand
shortswitch.
1. MountthePrimarylatchswitch, thesecondarylatchswitchand
theshortswitchtothedoorhookassemblyas showninILL.
NOTE:
Nospecificindividual adjustmentduring installation ofthePrimary
latchswitch, secondarylatchswitchorshortswitchtothedoor
hookarerequired.
2. Whenmounting thedoorhookassemblytotheovenassembly,
adjust thedoorhookassemblybymoving itinthedirection ofthe
arrowsintheillustration, sothat theovendoorwill nothaveany
playinit. Check forplayinthedoorbypulling thedoorassembly.
Make surethat thelatchkeysmovesmoothlyafteradjustmentis
completed. Completelytightenthescrewsholding thedoorhook
assemblytotheovenassembly.
3. Reconnect theshortswitchand check thecontinuityofthe
monitorcircuitand all latchswitches againbyfollowing the
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