Service manuals, schematics, eproms for electrical technicians
LORENZ 100W AC RECEIVER 1937 SM
Type: 
(PDF)
(PDF)Size
468.0 KB
468.0 KB
Page
8
8
Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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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 lorenz manual?
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- Also known:
LORENZ AC RECEIVER 100W 1937 100
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Relevant AUDIO forum topics:
Sziasztok!
Tanacsot szeretnek kerni a lemezjatszomotor fordulatszam szabalyzasahoz, osszedobtam egy egyszeru LM317T,R=240ohm, 2k5 potis feszultsegszabalyzot erre a celra de nem all be a konstans fordulat, max 15sec ig jo azutan kibillen a fordulatarol, pedig az LM317T nem melegszik.
feltetelek:
1. 4.5V tap
2. Nagyon pontos kellene hogy legyen a fordulat akar 1 nap mulva is ugyanannyi maradjon.
A "lemezjatszo gyarto kisiparos" stroboszkoppal fogja allitani/ellenorzni a fordulatot.
3. Potenciometeres legyen
Kerdes lehet=e egyaltalan LM317T-vel ezt megoldani, vagy van-e mas egyszeru megoldas amihez nem kell nyomtatott lap.
Lett hozva egy 4 tranzisztoros lengyel lemezjatszoszabalyzo ami megfelel a preciz stabil fordulatszabalyzasra, de sok passziv alkatresz van meg melette..
Üdv!
Rajzot keresek a fenti erősitőhöz.
Köszönöm!
sanyika45
Hi to all. Unit arrived dead with no power. The problem is with switching power supply. I checked most of the parts, no faulty found. Unable to check PWM ICs. To determine which one has the problem, Service Manual is more than important and necessary. I would appreciate if someone of you can help me find it or send it to me.
Thanks in advance for your kind attention and help.
Regards from Greece,
John
Repair of the final amplifier / replacement of 8A fuses of the secondary power supply and transistors of the final stage of the amplifier. The diagram is not available - it is not published anywhere...
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