Service manuals, schematics, eproms for electrical technicians

NIPPON CT-2014TXT

TV - EPROM
Type: (ZIP)
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351.0byte
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Category
TV
EPROM
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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    NIPPON CT-2014TXT CT2014TXT CT 2014 TXT 2014TXT
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Relevant TV forum topics:
Nippon CT 2014 tv csatornahangolaskor nem all meg az adon.Megoldva
Szevasztok!! Egyik baratom talalt meg ezzel a TV-vel.A sortrafo mellett 5118H van szitazva,mint sassze tipus,de nem stimmel a "valosag" ,a rajzokkal amit talaltam.A csatolt rajznak az a resze egyezik azzal ahol a hibat sejtem. Hangolas elindul,VL-VH savokban semmi adot nem talal,UHF-ben talal nehanyat.Kapcsolo feszultsegek a tuner labain rendben vannak,varikap feszultseg 1-2V-tol 28,5V valtozik.(csatornavalto hiba).UHF savon azok az adok amiket talal,gyonyoruen jonnek,csak tul fut rajtuk.Nem is lassul a kereses,ado kozeleben.A processzor (M34300N4-012SP) 8-as laban (AFC),jel nelkul,0,5V-1V korul merheto,ahogy kozeledik az adohoz,4,2V-4,5V-ra emelkedik,majd ujra csokken 0,5V-1V-ra ahogy tavolodik.A kerdesem az lenne hogy a processzor hogy erzekeli az adora hangolast,hogy le kell alni,az AFC jelen kivul? Lehetseges hogy hibas a processzor?Tudom e valahogy szimulalni ( kulso feszultsegekkel) a processzornak,hogy "most kell megallni",hogy ki tudjam zarni, egyertelmuen,a processzor hibajat,csere nelkul?.A processzor es a KF IC (TA 8611AN) tapjai, feltetelezem hogy, rendben vannak,de ma az elkokat cserelem. Segitsegeteket elore is koszonom,Peter
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