Service manuals, schematics, eproms for electrical technicians

B-O BEOMASTER 1000-2312 1967 SCH

AUDIO - SERVICE MANUAL
Type: (PNG)
Size
467.8 KB
Page
---
Category
AUDIO
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
Good luck to the repair!

Please do not offer the downloaded file for sell only use it for personal usage!

Looking for similar b manual?
Document preview [1st page]
No preview item


No preview item for this file.

Possible causes:
  • No preview picture generated yet.
  • It is not a pdf file.
Advertisements
Please tick the box below to get download link:
  • Also known:
    BO BEOMASTER 10002312 1967 1000 2312 B-O 1000-2312
  • If you have any question about repairing write your question to the Message board. For this no need registration.
  • If the site has helped you and you also want to help others, please Upload a manual, circuit diagram or eeprom that is not yet available on the site.
    Have a nice Day!
  • See related repair forum topics below. May be help you to repair.
Warning!
If you are not familiar with electronics, do not attempt to repair!
You could suffer a fatal electrical shock! Instead, contact your nearest service center!

Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, some files are archived,
so you need WinZip or WinRar to open that files. Also some files are djvu so you need djvu viewer to open them.
These free programs can be found on this page: needed progs
If you use opera you have to disable opera turbo function to download file!
If you cannot download this file, try it with CHROME or FIREFOX browser.
Translate this page:
Relevant AUDIO forum topics:
BEAG PKC 901-16 keverő négy csatornája rossz.
Tisztelt kollégák. A címbeli keverő EME 593 típusú csatornáiból négynek a LINE bemenete nem működik, a mikrofon bemenetek viszont jók, és rajzot nem tudtam szerezni. Van még benne ECK 593, EKE 593, és THE 594 modul. Valaki esetleg tud segíteni? Főként rajz lenne jó. Kösz: Varga Béla
DENON AVR-1311 végfok hiba
Sziasztok! Adott egy Denon AVR-1311 erősítő. Úgy került hozzám, hogy tiltott a védelem, nem indult el. Gyorsan meglett a hiba. Az egyik csatornán C-E között zárlatos volt mind a 2db végtranyó, valamint a 2-2 párhuzamosan kötött emitter ellenállásból az egyik pár szakadt volt, illetve még zárlatos volt 1db 3,3V-os zéner dióda. Ezek cseréje után tökéletesen működött kb 1 hétig, majd megint ugyan ez a hibajelenség és ugyan ezek az alkatrészek rosszak. Mellékelem a rajzot, igaz telefonnal fotóztam, de talán látszik a lényeg. Q464, Q466, R517, R518 és ZD51 poziciójú alkatrészekről van szó. Kérdés mi lehet az oka, hogy újra bekrepált? Én a végtranyókra tippelek, mert eredeti Shankent nem kaptam csak PMC-t. Ha ez a gond mit érdemes beletenni helyette, mert nem szeretném újra szétszedni és kínlódni vele?
Bheringer Eurolive B215D
Salve, Cassa bruciata Bheringer Eurolive B215D Si tratta di una cassa Biamplificata con amplificatore per i Bassi in classe D e per gli alti un ic TDA7293. Oggi finalmente sono riuscito a risolvere questo guasto. Lo voglio pubblicare per aiutare il forum ringrazio per aver auto lo schema. Stato della cassa iniziale al ricevimento >accensione led rosso in protezione nessuna uscita audio in funzione. 1°passo: verifica del TDA7293 in corto circuito pin 7 con pin 14 = è bruciato!!!! da sostituire 2°passo: verifica oscillatore IC11 IRS20955 = NON OSCILLA bruciato!!!! - da sostituire. - Fatto... MA NON FUNZIONA!!! esamino il circuito meglio R72 rotta C89 in -- corto. Sostituisco anche C95 - = FUNZIONA!!! PER0' INTERVIENE IL LIMITER. - Ho dovuto fare questa modifica per urgenza. Del cliente. - Momentaneamente ho variato il valore di R38 da 100K A 10M. - IL LIMITER INTERVIENE MENO. Sè c'è qualcuno che mi può passare una dritta Spero di essere stato utile e di aver decritto bene il mio intervento Vi saluto buon lavoro a tutti Lucio.
ION Archive LP Turntable

This is a compact design to I guess transfer the vinyl into MP3 format.
Complaint was when the arm was moved the tt dont spin, confirmed that as
theres a leaf switch to sense arm movement,
and its fed to a main pcb with all the IC's that I guess handle all the
stuff. The switch is ok, and I remember seeing 14V or so on the motor pins
frm the PCB, so I figured perhaps theres anough current to spin the motor and
focused on testing the motor.

Manufacturer does not supply the mainboard that feeds the motor but
the motor can be taken apart and after I opened it and
disconnected the small pcb fron the motor terminals and apply power
directly, it spins w 12v. theres a small electrolytic cap on the pcb 25V / 22uF and an
AN6652 4 pin T0-220 type case IC that I guess is some kind of speed control
circuitry.

The drive Motor is an EG-530-SD-3F, main board is stamped K-13007.
Gonna check the cap, but after searching this IC and its
applications with the motor, I see its popular and some drawings show how its used to regulate the 78,33
and 45 rpm speeds.

This drawing looks pretty much what I see in there:
https://tectronelectronics.eu/images/thumbnails/465/465/detailed/31/eg530.jpg
 

I have replaced the IC and the cap, but the motor still does not turn. The main pcb

is proprietary and cant be purchased, and I think it is giving the op-amp IC a reference signal.

Is there a way to bypass that signal or fool the IC to believing its on to test it out?

Photo showing the motor pcb :
http://www.mediafire.com/view/s79blgku1503mtg/HPIM0643.JPG/file
Photo of motor under test:

http://www.mediafire.com/view/thhgvcwac8al7gu/HPIM0635.jpg/file

 

 

 

Similar manuals:
If you want to join us and get repairing help please sign in or sign up by completing a simple electrical test
or write your question to the Message board without registration.
You can write in English language into the forum (not only in Hungarian)!

E-Waste Reduce