Service manuals, schematics, eproms for electrical technicians


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YAMAHA K-950 service manual (1st page)
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YAMAHA K-950 service manual (2nd page)
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  • Also known:
    YAMAHA K-950 K950 950
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  • See related repair forum topics below. May be help you to repair.
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Relevant AUDIO forum topics:
Yamaha RX-V450. Erősítö. Se kép, se hang.
Jó reggelt mindenkinek!
Van ez az izé. Stby tápban zárlatos fet. Csere után van 5 volt a kezelőn. És ennyi.
Pont marhára nem izgatna de egy haverkollégáé. Ha valaki szeretne vele molyolni, viheti.
Yamaha CDX-590 laser adjustments?
I have a Yamaha CDX-590 CD player and it skips on some CDs - original CDs, these CDs play without problems on my other CD players. I have changed the laser unit (KSS-210A) but this didn't solve the problem. When I turn the player upside down, it plays the problematic CDs without a problem. That's why I think the laser needs adjustment. I have only a service manual for the CDX-493/593 but they should be very similar to the CDX-590. It seems that the adjustments are done via "test mode" of the CDX-590, unfortunately there is not much information, how to exactly, in the service manual. Here is a picture of the PCB. Here are the "test mode" sections of the service manual. In "test mode" I have tried Auto adjustment mode 1, 2, 3, but I don't know if it should work fully automatic without any intervention or when the mode is fineshed and I can proceed to the next one. So I activated mode 1, waited a while, activated mode 2, waited a while, activated mode 3, then exited test mode. It didn't help. Mode 1 - only a short blink of two horizontal dashes on the display and thats it Mode 2 - started "play" without sound from a strange time 99:00 (the test CD is not so long), after a while it skips to another time, "plays" a while, then skips back and "plays" and so on, I left it about an hour and it was still going on Mode 3 - seems to be very short as mode 1 I think I'm missing something ... Maybe someone did this or even serviced Yamahas in an official service and can provide information how to adjust the laser? Or maybe the problem is not the laser?
Yamaha rx-v477 házimozi erősítő, processzor nem indul
Kedves Kollégák!

A címben szereplő erősítő TMPM362F10FG processzora nem működik, 3,3V os tápfeszültsége rendben van de sajnos hidegen 8ohm al terheli valami.
Nem kezdtem még keresgélni a terhelés forrását mivel elég kicsik a forrasztások, de nagy valószínüséggel a processzor okozhatja. 
Kérdésem, hogy lehet-e üres processzorral cerélni? Pl: aliexpressről.

Üdv: S. István
yamaha ysp 900 nem csinál semmit.
Szervusztok! Van ez a fentnevezett (yamaha ysp 900)készülék és nem csinál semmit. Nincs stbyt se.A tápot néztem,a 3,3V és az 5V meg van a 12V-helyett csak 10.7V-ot mérek. Van egy microprocessor (M30626Fjpfp)amiről kapna jelet a relé de nem kap. Ha valaki már javított ilyet és tudna segíteni azt meg köszönném. Üdv mindenkinek!
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