Panasonic NN-S554MF User manual

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ServiceManual
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ORDERNO.SIMMC0408030A3
MicrowaveOven
NNS554MFNNS554WFNNK593MF
NNK574MFNNK574WF
NNK544WF
HPE(HongKong)
YPQ(Singapore)
MPQ(Malaysia)
TPE(Thailand,Indonesia)
LPK(Philippines)
YTE(Others)
KTE(UAE)
KUE(Egypt)
PTE(Iran)
KPQ(Kuwait,Doha,Qatar,Oman,Bahrain,Pakistan)
STM(SaudiArabia)
ZPE(CISCountries)
PleasefileandusethismanualtogetherwiththeservicemanualforModelNNS553/K593/K573/K543
(ORDERNO.SIMMC0306022C3).

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©2004PanasonicHomeAppliancesMicrowaveOven(Shanghai)Co.,Ltd.
Allrightsreserved.Unauthorizedcopyinganddistributionisaviolationoflaw.

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2.1Checkthegrounding
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Donotoperateonatwowireextensioncord.Themicrowaveovenisdesignedtobegroundedwhenused.Itis
imperative,therefore,toensuretheapplianceisproperlygroundedbeforebeginningrepairwork.
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2.2Inverterwarnings
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DANGER,HIGHVOLTAGEANDHIGHTEMPERATURE(HOT/LINE)OFTHE
INVERTERPOWERSUPPLY(U)
Thehighvoltageinverterpowersupplyhandlesveryhighvoltageandcurrentforthemagnetrontube.Thoughit
isfreefromdangerinordinaryuse,extremecareshouldbetakenduringrepair.
Thealuminumheatsinkisalsoenergizedwithhighvoltage(HOT),donottouchwhentheACinputterminals
areenergized.ThepowerdeviceCollectorisdirectlyconnectedtothealuminumheatsink.
ThealuminumheatsinkmaybeHOTduetoheatenergy,therefore,extremecareshouldbetakenduring
servicing.
H.V.Inverterwarning
WARNINGFORINVERTERPOWERSUPPLY(U)GROUNDING
Checkthehighvoltageinverterpowersupplycircuitgrounding.Thehighvoltageinverterpowersupplycircuit
boardmusthaveaproperchassisground.Theinvertergroundingbracketmustbeconnectedtothechassis.If
theinverterboardisnotgroundeditwillexposetheusertoveryhighvoltagesandcauseextremeDANGER!Be
surethattheinvertercircuitisproperlygroundedviatheinverterearthbracket.
Groundingoftheinvertercircuitboard

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WARNING!DISCHARGETHEHIGHVOLATGECAPACITORS
Forabout30secondsaftertheovenisturnedoff,anelectricchargeremainsinthehighvoltagecapacitorsinthe
inverterpowersupplycircuitboard.
Whenreplacingorcheckingparts,removethepowerplugfromtheoutletandshorttheinverteroutputterminal
ofthemagnetronfilamentterminalstothechassisgroundwithaninsulatedhandlescrewdrivertodischarge.
Pleasebesuretotouchthechassisgroundsidefirstandthenshorttotheoutputterminals.
Dischargingthehighvoltagecapacitors
WARNING
Thereishighvoltagepresentwithhighcurrentcapabilitiesinthecircuitsoftheprimaryandsecondary
windings,chokecoilandheatsinkoftheinverter.Itisextremelydangeroustoworkonornearthesecircuits
withtheovenenergized.DONOTmeasurethevoltageinthehighvoltagecircuitincludingthefilamentvoltage
ofthemagnetron.
WARNING
Nevertouchanycircuitwiringwithyourhandorwithaninsulatedtoolduringoperation.
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2.3Partreplacement.
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Whenanypartorcomponentistobereplaced,alwaysensurethatthepowercordisremovedfromthewall
outlet.
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2.4Whenthe10Afuseisblownduetotheoperation
oftheshortswitch:
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WARNING
Whenthe10A250Vfuseisblownduetotheoperationoftheinterlockmonitorswitch,replaceallofthe
components(primarylatchswitch,secondarylatchswitch,shortswitchandpowerrelayB(RY1)).
1.Thisismandatory.Referto“adjustmentsandmeasurements”forthelocationoftheseswitches.
2.Whenreplacingthefuse,confirmthatithastheappropriateratingforthesemodels.
3.Whenreplacingfaultyswitches,besurethemountingtabsarenotbent,brokenordeficientintheirability
toholdtheswitches.
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2.5Avoidinsertingnails,wireetc.throughanyholes
intheunitduringoperation.
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Neverinsertawire,nailoranyothermetalobjectthroughthelampholesonthecavityoranyholesorgaps,
becausesuchobjectsmayworkasanantennaandcausemicrowaveleakage.
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2.6Confirmafterrepair
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1.Afterrepairorreplacementofparts,makesurethatthescrewsoftheoven,etc.areneitherloosenor
missing.Microwavesmightleakifscrewsarenotproperlytightened.
2.Makesurethatallelectricalconnectionsaretightbeforeinsertingtheplugintothewalloutlet.
3.Checkformicrowaveenergyleakage.(Refertoprocedureformeasuringmicrowaveenergyleakage).
CAUTIONMICROWAVERADIATION
USECAUTIONNOTTOBECOMEEXPOSEDTORADIATIONFROMTHEMICROWAVEMAGNETRON
OROTHERPARTSCONDUCTINGMICROWAVEENERGY
IMPORTANTNOTICE
Thefollowingcomponentshavepotentialsabove2000Vwhiletheapplianceisoperated.
Magnetron
Highvoltagetransformer(Locatedoninverter(U))
Highvoltagediodes(Locatedoninverter(U))
Highvoltagecapacitors(Locatedoninverter(U))
Payspecialattentiontotheseareas.
Whentheapplianceisoperatedwiththedoorhingesormagnetroninstalledincorrectly,themicrowaveleakage
canexceedmorethan5mW/cm2.Afterrepairorexchange,itisveryimportanttocheckifthemagnetronand
thedoorhingesarecorrectlyinstalled.
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2.7Sharpedges
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Caution
Pleaseusecautionwhenunpacking,installingormovingtheunit,assomeexposededgesmaybesharptothe
touchandcauseinjuryifnothandledwithcare.
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3.1Adjustmentofprimarylatchswitch,secondary
latchswitchandshortswitch.
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1.MountthePrimarylatchswitch,theSecondarylatchswitchandtheShortswitchtothedoorhook
assemblyasshowninILL.
NOTE:
NospecificindividualadjustmentsduringinstallationofthePrimarylatchswitch,Secondarylatchswitch
orShortswitchtothedoorhookarerequired.
2.Whenmountingthedoorhookassemblytotheovenassembly,adjustthedoorhookassemblybymoving
itinthedirectionofthearrowsintheillustration,sothattheovendoorwillnothaveanyplayinit.Check
forplayinthedoorbypullingthedoorassembly.Makesurethatthelatchkeysmovesmoothlyafter
adjustmentiscompleted.Completelytightenthescrewsholdingthedoorhookassemblytotheoven
assembly.
3.Reconnecttheshortswitchandcheckthecontinuityofthemonitorcircuitandalllatchswitchesagainby
followingthecomponenttestprocedures.
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3.2Measurementofmicrowaveoutput
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TheoutputpowerofthemagnetroncanbedeterminedbyperformingIECstandardtestprocedures.
However,duetothecomplexityofIECtestprocedures,itisrecommendedtotestthemagnetronusingthesimple
methodoutlinedbelow.
NecessaryEquipment:
*1literbeaker*Glassthermometer
*Wristwatchorstopwatch
NOTE:
Checkthelinevoltageunderload.Lowvoltagewilllowerthemagnetronoutput.Takethetemperaturereadings
andheatingtimeasaccuratelyaspossible.
1.Fillthebeakerwithexactlyoneliteroftapwater.Stirthewaterusingthethermometerandrecordthe
water’stemperature.(recordedasT1).
2.Placethebeakeronthecenterofglasstray.
SettheovenforHighpowerandheatitforexactlyoneminute.
3.Stirthewateragainandreadthetemperatureofthewater.(recordedasT2).
4.ThenormaltemperatureriseatHighpowerlevelforeachmodel,isasshownintable.
TABLE(1L1min.test)
RATEDOUTPUT TEMPERATURERISE
1000W Min.8.6°C
1100W Min.9.4°C
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4.2PARTSLIST
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NOTE:
1.Whenorderingreplacementpart(s),pleaseusepartnumber(s)showninthispartlist.
Donotusedescriptionofthepart.
2.Importantsafetynotice:
Componentsidentifiedby markhavespecialcharacteristicsimportantforsafety.
Whenreplacinganyofthesecomponents,useonlymanufacture’sspecifiedparts.
Ref.No. PartNo. PartName&Description Pcs/Set Remarks
1 F00066V00HP CAUTIONLABEL 1 EXCEPTZPE
1 F00066W10ZP CAUTIONLABEL 1 ZPE
6 F10015Q00AP BASE 1
7 F10084T00AP RUBBERFOOT 4
8 F110D5R00SAP CABINETBODY 1 K593MF,K574MF
8 F110D5R00HAP CABINETBODY 1 K574WF,K544WF
8 F110D5Q00SAP CABINETBODY 1 S554MF
8 F110D5Q00HAP CABINETBODY 1 S554WF
9F200A5R50CP OVEN 1 K593MF,K574MF/WF
9F200A5R20BP OVEN 1 K544WF
9F200A5Q30BP OVEN 1 S554MF/WF
10 F20555Q00BP COVER 1
11 F21315G10XN PULLYSHAFT 1
12 F290D5Q00AP ROLLERRING(U) 1
13F30205Q00AP DOORHOOK 1
14 F31365Q00AP HOOKLEVERA 1
15 F400A5U00XN FANMOTOR 1
16 F40085G10XN FANBLADE 1
17 F40255Q00AP AIRGUIDEA 1
18 F40425Q00AP AIRGUIDEF 1
19 F612E5G10XN INCANDESCENTLAMP(U) 1 EXCEPTHPE
21 F41445Q00AP UPPERORIFICE 1
22 F42095Q00AP LOWERORIFICE 1
23 F64505Q00AP SENSORCOVERB 1 K593MF,K574MF/WF
24 F65434W00AP SENSORCOVERC 1 K593MF,K574MF/WF
25 A607S4T00AP STEAMSENSOR 1 K593MF,K574MF/WF
26J61424T00AP MICROSWITCH 1 (PRIMARYLATCHSWITCH)(V15G3C25)
27J61414T00AP MICROSWITCH 1 (SECONDARYLATCHSWITCH)(D3V16G3C25)
28J61784T00AP MICROSWITCH 1 (SHORTSWITCH)(D3V1G2C25)
292M261M32F MAGNETRON 1 EXCEPTSTM,ZPE
29 2M261M32J MAGNETRON 1 STM,ZPE

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31A62304210BP FUSE 1 (10A)
33 J692Y4T00YNR NOISEFILTER(U) 1 EXCEPTSTM,ZPE
33 J607X4L00BP NOISEFILTER(U) 1 STM,ZPE
34 F63265U30XN TURNTABLEMOTOR 1
35F900C5Q00YK ACCORDW/PLUG 1 HPE,MPQ,YTE,YPQ,KTE,KPQ,KUE
35 F900C5G40SN ACCORDW/PLUG 1 STM
35 F900C5Q00TN ACCORDW/PLUG 1 TPE,PTE,ZPE
35 F900C5Q00LN ACCORDW/PLUG 1 LPK
36 F606Y4V00XN H.V.INVERTER(U) 1
37 F65855R00BP INVERTERBRACKET 1
41 XTWFA4+12T SCREW 4 FORMAGNETRON
44 XTWFA4+12D SCREW 4 FORCABINETBODY
45 XTCAFA4+12AFW SCREW 1 FORCABINETBODYSIDE(K574WF,K544WF,S554WF)
45 XTCAFA4+12AFS SCREW 1 FORCABINETBODYSIDE(K593MF,K574MF,S554MF)
51 F630G5R20GP HEATER(AU) 2 K593MF(KTE,PTE),
K574MF/WF(HPE,TPE,YTE,LPK,KTE,STM,ZPE)
51 F630G5R20BP HEATER(AU) 2 K574MF/WF(MPQ,YPQ),K574WF(KPQ)
51 F630G6B80XN HEATER(AU) 2 K544WF(KTE,KUE,HPE,TPE,YTE,ZPE,PTE)
51 F630G5R00BP HEATER(AU) 2 K544WF(MPQ)
52 F64605R00BP HEATERSUPPORT 2 K593MF,K574MF/WF,K544WF
55 F40245R00BP EXHAUSTGUIDEA 1 K593MF,K574MF/WF,K544WF
57 F01506W50XP NOTOUCHINGLABEL 1 K593MF,K574MF/WF,K544WF
58 F02395E20KN CORDCAUTIONLABEL 1 KTE,KPQ,STM,PTE,KUE
60 F11404J60XN STOPPER 2
62 F00066W10MP CAUTIONLABEL 1 YPQ
63 F02846W10YP NO.LABEL 1 K574MFYPQ
63 F02846W40YP NO.LABEL 1 S554MFYPQ
64 F00054S10 EARTHLABEL 1 TPE
65 F20345Q00CP REINFORCEBRACKET 1
66 F60305G60HN INCANDESCENTLAMP 1 HPE
67 F61525H00AP SOCKET 1 HPE
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4.3DOORASSEMBLY
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Ref.No. PartNo. PartName&Description Pcs/Set Remarks
D1 F30185Q00AP DOORKEYA 1
D2F30015Q00SBP DOORA 1 K593MF,K574MF(EXCEPTLPK),S554MF
D2 F30015Q00SAP DOORA 1 K574MFLPK
D2 F30015Q00HBP DOORA 1 K574WF,K544WF,S554WF(EXCEPTLPK)
D2 F30015Q00HAP DOORA 1 S554WFLPK
D3F302K5Q00AP DOORE(U) 1
D4 F30215G10XN DOORKEYSPRING 1
D5F30855Q00AP DOORC 1
D6 F31456V60XP DOORSCREENA 1
D7 F31465R90HP DOORSCREENB 1 K593MF,K574MF/WF,K544WF
D7 F31465Q00HP DOORSCREENB 1 S554MF/WF
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