Schematic - Zenith ZVM-121 Service Manual

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NOTES
AU VIILUGESMEASUREO FROM
CHASSIS TO POINTS INDICATED.
£-2 ALL VOLTAGES ARE D.C. UNUSS
OTHERWISE SPECIFIED
E-J ALL VOLTAGE MEASUREMENTS TO BE
",,'De I!TH '10 SICNIl PRESENT
£4 . .l.LlRESISTORS.l.REflLlI!5
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(SUMOTE6)
£-5 , . INDICATES !20 PERCENT TOLUANCE
M.IYBE USfD.
E-6 RESISTANCE MeASUREYENTSSHOINIITH COILS
DISCONNECTED FRDII CIRCUIT,
E-l. CDILRESISTANCESNOlSPEClfIEOAREUNDERONEOHIII.
E-8. ALL CAPUITY VALUES IN MICROfARADS UNLESS OTHUIISE SPECifiED.
£-9. FOR CAPACITY TOLERANCES, SEE LEGEND.
E-l0. ARRD.SDNPOTENTIDIIIETERS INDICATES ClDCllllSE ROTlTION.
£-11. MII~ , IIEGAHERTZ ' MEGACYCLE uK ' III CROHENRY.
E-12.
~
INOICATES CHASSIS GROUND.
HJ
cr
INDICAUS VOLTAGE SOURCE.
£-14. @-tNDICAlESALlGNIIIENTORTESTPOINT.
E-15.~INDICATES""VEFORll.
(-I". TUIIWPOIEROFFBEFOREREPLA!:I"GSEIlICONOUCTORS .
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IMPQRTANT SAfETY NOliCE
'HEN SERVICING THIS CHASSIS UNDER NO CIRCUIISTANCES SHOULD THE ORIGIN Al
DESIGNBEMOOIFIEDOR,uTEREOIITHOUTPERlilISSIONFROMTHEZENIlH
R ... OIO CORPORATUHII. ALL CO .. PONENTS SHOULD BE REPUCED ONLY 11TH TYPES
IDENTIC"'l TO THDSE IN THE ORIGINAL CIRCUIT. AND THEIR PHYStCAllOCAliDN.
IIRIIIG"'NO lEAD DRESS IlUST CONFORli TDORIGINALtAYOUrUPDNCOMPLElIDN
DFREPAIRS.
INSOlE tNSTANCES REDUNDANT CIRCUtlRY ISINCDRPOR"'lEOFDRA[I[lIlIDNAL
CIRCUIT PROTECTION AND X-RADIATION' SAFETY. SPECIAL CIRCUITS "'RE ALSO
USEDTOPREVEPll SHOCIt AND FIR(HAURO. THE LETTER "X" I" THE
HECTRICAl SCHEllTlC AND P.RTS LIST, OESIGt!.TES SPECI,u CRITICAL
S.FETVCOIIPONENTS. THESE SHOULD BE REPlACEDONLVI1TH TYPES I OENT1 Cal
TO THOSE IN IHEZENITilPARTSlISTS.NOSCHE ..... TlC.
THISCIRCUITOIAGRA .. MAYOCCAS1DNAllYDIFFEilFROMTIIEACTUAlCIRCUIT
USEO. THIS lA" IMPLEMENUT1DN Of THE lATE<jT S.FETY AND PERFOINANCE
UIPROYEMENT CH.NGES INTO THE SET IS NDT DELAYED UNT1L THE NE' SERVICE
LITERATURE IS PRINTED.