Service manuals, schematics, eproms for electrical technicians

PIONEER DVD-V7300D V7400 SM

VIDEO-DVD - SERVICE MANUAL
Type: (PDF)
Size
4.7 MB
Page
81
Category
VIDEO-DVD
SERVICE MANUAL
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  • Also known:
    PIONEER DVDV-7300D V-7400 DVDV7300D V7400 DVDV 7300 7400 DVD V7300D DVD-V7300D
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  • See related repair forum topics below. May be help you to repair.
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Relevant VIDEO-DVD forum topics:
Sony SLV-736EE Tápegység hiba
Sziasztok Van egy SONY SLV-736EE Tipusu videómagnom ami egyik napról a másikra nem kapcsolt be. Megvizsgálva a tápegységet sajnos semilyen feszültséget nem ad ki kiszereltem a videóból és egy kis fémdobozba szerelve a táp külön van tipusa HS-528SF ha valakinek lenne ilyen tápja bontva vagy roszvideója amiben ilyen van és müködik érdekelne sajna rajzot nem találtam hozzá ha esetleg valaki tudna segiteni ebben illetve mit nézzek meg benne ledeket kötöttem a kimenetekre +13 voltnál a led villog a 6 voltnál semmit nem csinál és a -13 voltnál is villog a led amikor feszültség alá helyezem . Ha valaki tud segitsen előre is köszönöm..
Universum VP-2325 Video 8as lejátszó nincs kijelzés kezelőre nem reagál! Help
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Sziasztok!

A kazettafészket és a mechanikát mozgató motor egy olyan műanyagfészekben ül, amit nem jövök rá, hogyan kell szétszedni. A tengelyt nem tudom kitolni, és nem találok segergyűrűt sem, ami fogná. Van erre valami trükk, vagy csak ügyetlen vagyok? Félek az öreg műanyag törésétől is.

üdv.
T.
Sony Sl-S770 vcr interrupted playback and AV display issues

I'm encountering an issue with my Super Betamax player. During playback, some cassettes abruptly stop playing at seemingly random points, accompanied by a sound similar to the one made when a tape reaches its end. This interruption also renders the rewind and forward buttons unresponsive. However, it does not impede the manual forwarding or rewinding of the cassette. The only solution seems to be ejecting the cassette and reinserting it. Occasionally, even this workaround fails, allowing only two seconds of playback before the problem recurs.

I sought guidance from the Mister Betamax troubleshooting page, which indicated that the tape safety device might be the root cause. I received additional advice suggesting that the issue could stem from one of the sensors within the VCR, possibly due to oxidized contacts causing intermittent operation. It was recommended to resolve this by carefully cleaning the contacts on the sensor switch responsible for detecting loaded tapes or the sensor that detects if the tape is "record-protected." Another suggestion was to monitor the output of these switches using an oscilloscope or voltmeter to determine if they are indeed the source of the problem.

I'm eager to hear if anyone has additional advice or personal experiences to share regarding this issue.

Additionally, I'm facing an AV cable problem where the yellow AV cable fails to display any video. While it used to work correctly, the AV audio cable still functions properly. As a temporary workaround, I've been using a coaxial cable and routing it through another VCR to utilize its AV output. However, I'm interested in exploring potential solutions to fix the issue with the yellow AV cable, if possible. Any insights or suggestions would be greatly appreciated.

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