Service manuals, schematics, eproms for electrical technicians
PHILIPS 638U VINTAGE RADIO SM
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(PDF)
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162.2 KB
162.2 KB
Page
2
2
Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
Looking for similar philips manual?
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- Also known:
PHILIPS VINTAGE RADIO 638U 638
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Relevant AUDIO forum topics:
SBF3AB IC-t keresek.Köszi Solyom
Sziasztok!
Barátom akksit cserélt a Renaultjában és most kódot kér a rádiója, amit nem tud. Ezt lehet kalkulálni, vagy epromban van a kódja. Radiosat 6000 (Philips) RN479FW9029543
Meg tudja valaki mondani a kódját? Ha nem kalkulálható, akkor kiolvasom az epromot.
Köszi a segítséget.
Üdv.
Sikerült megszereznem az SM-et, fel akartam tölteni ide, de 60 mega és nem engedi.
Mi ilyenkor a teendő?
Attila
Szevasztok!
A felvetésem inkább csak költői kérdés jellegű, hiszen a CXA1538M SMD IC a SINI-nél 8586Ft. Meg ugye az utánvétes postadíj.
Rajzom, persze nincs hozzá, de van az IC-hez adatlap.
A hiba:
A Vcc (Pin7) a testre 10R-t mutat a multiméterrel, miután kivettem az R12 68R előtét ellenállást.
Az R12-re beérkező feszültség amikor az R12 ki van véve 6.27V.
Visszatéve az R12-őt a Pin7-en 0.53V van jelen, eközben az R12-őn 5.73V, ebből adódóan a Pin7-re 84.2mA folyik. Ez az áram 8.5mA (AM), illetve 11mA (FM) lehetne az adatlap szerint.
Esetleg nem túl szerencsés ez a konstrukció? Hiszen ez az IC elvileg nemigen hibásodhatna meg.
Volt már valakinek a CXA1538M SMD IC-vel ehhez hasonlítható meghibásodása?
Köszi!
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