Service manuals, schematics, eproms for electrical technicians

KENWOOD UD-301 UD-351

AUDIO - SERVICE MANUAL
Type: (PDF)
Size
61.9 MB
Page
98
Category
AUDIO
SERVICE MANUAL
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  • Also known:
    KENWOOD UD-301 UD301 UD351 UD 301 351 UD-351
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Kenwood A-7 X Rajz
Üdvözlet minden fórumozónak. A témában említett készülék rajzára lenne szükségem, mert a tulaj belebarmolt és egy pár ellanállat szénné égett a kísérletezése közben amit nem tudok beazonosítani. Ha valakinek lenne esetleg, kérem rakja fel az oldalra vagy írja meg nekem hogy honnan tudnám leszedni. Segítségeteket előre is köszönöm. Irkax.
Trio-Kenwood: KR-3010 [Radio] S.N.962845 / Does not work, the final floor and prefinal floor defect with many burned component/

I greet you! I would need the scheme of this "vintage" amplifier that needs to be "restored". The problem is that in the prefinal and final floor I have many "fried" resistors well, their value cannot be identified.I replaced the defective transistors: 2SC1509, 2SA777,2SB690 and 2SD 796 (each 2 pcs.) and the electrolytic capacitors adjacent to them. I could not go further because of the carbonized resistors that I do not know their value (I can only guess that they are values small, in the order of ohms). The schematic diagram I downloaded, from the address received by the kindness of a colleague is not complete - it is a single page (missing Q29-Q30-Q31-Q3 and resistors R115-R116-R117-R118 which are completely carbonized, at other resistors I could see their value).Thanks in advance!
Finally, I found the missing part

If stuck in the repair and you ask questions, please do it as follows: - Details: Give the exact model number of your device and the chassis ID (if there is). - If possible, please attach pictures of the appliance. - Anamnesis: Write down the exact symptom. If hard to describe the symptom, it is difficult to verbally defined clearly, attach pictures or sound of the phenomenon! - Tell what was you have done so far: search contact error, which parts has examined or changed yet, etc... The incorrectly named topic suspended and will be deleted after 48 hours! Suspended state while others are not able to comment until you correct the address. Subsequent repair of the defective title (within 48 hours) by clicking on the "Edit" tab can be carried out.

KENWOOD KR-V45 kapcsolási rajz kellene....Equaliser gondok..
Sziasztok! Nem tudom mi lehet a gond az erősítő 5csatornás equaliserével.2 db M5227p ic vel van felépítve.Bekapcsolt EQ állapotban az erőlködő egyáltalán nem szól,kikapcsolt(defeat)állásban meg szabályoz(lefelé) az adott EQ frekvenciákon a potit felhúzva gerjed egy szint után.Rajz kellene mert így elég áttekinthetetlen a jel útja.Hanggenerátorral próbáltam követni de már kissé belefáradtam. Üdv!
Kenwood C-V750
Hi! Ez egy nagyon profi cucc, nálam van a hozzá való erősítő is. Egymás nélkül nem használható, lévén ez a kütyü vezérli a végfokot is. Az egységen csak a készenléti LED világít, semmire nem reagál, nem ad vezérlést az erősítőnek. A tulaj szerint alaphelyzetben az időt mutatja. Nos ez ezt sem. Ahogy lenni szokott, az előlapi panelon szvsz elszállt a proci, 5V ok, -30V ok és az egyéb tápok is. A STBY gomb jelét ez fogadja és dolgozná fel. De néma csend, a proci az egyetlen aktív elem, néhány ellenállás, kondi és csók. Még quarc sincs. Valakinek egy elfekvő darab, vagy rajz mert olvashatatlan a tipus...:/ ?
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