Service manuals, schematics, eproms for electrical technicians
ZERDIK 64BW BATTERY RECEIVER SCH
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AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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Looking for similar zerdik manual?
Good luck to the repair!
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ZERDIK BATTERY RECEIVER 64BW 64 BW
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Relevant AUDIO forum topics:
Given:
Victor TT-71, neon lamp does not light, speed is lower than normal. This is subsequent some short circuit the owner does inside the device. No further details.
I found out the VICTOR QL7 have the same motor driver amd I downloaded the service manual that I attached here in case this manual is not already uploaded.
Looking at the diagrams I found out that at TP3 (same with pin5 of IC803) instead if that rectangular signal, I have nothing but 5VDC and a negative or positive short spike whenever I'm starting or stopping the motor and
Under the circumstances I suspect IC803 is defective. The bad thing, IC803 is NPC SC8043. Also I wonder if the crystal is fine (except that I wonder what can be wrong with a crystal after some short circuit).
Does anybody have any more suggestion?
Also, where can NPC SC4043 be sourced? Also, a crystal 9.054MHz?
Thanks in advance,
Corneliu
Victor TT-71, neon lamp does not light, speed is lower than normal. This is subsequent some short circuit the owner does inside the device. No further details.
I found out the VICTOR QL7 have the same motor driver amd I downloaded the service manual that I attached here in case this manual is not already uploaded.
Looking at the diagrams I found out that at TP3 (same with pin5 of IC803) instead if that rectangular signal, I have nothing but 5VDC and a negative or positive short spike whenever I'm starting or stopping the motor and
Under the circumstances I suspect IC803 is defective. The bad thing, IC803 is NPC SC8043. Also I wonder if the crystal is fine (except that I wonder what can be wrong with a crystal after some short circuit).
Does anybody have any more suggestion?
Also, where can NPC SC4043 be sourced? Also, a crystal 9.054MHz?
Thanks in advance,
Corneliu
I have just completed a brand new manual for this HiFi set.
I would like to add it to the library on this site.
How do I do that?
Regards,
Wim
I would like to add it to the library on this site.
How do I do that?
Regards,
Wim
Sziasztok!
Meggyűlt a bajom ezzel a készülékkel, így minden építő jellegű tanácsot szívesen fogadok.
Jelenség, hogy max.hangerőre tekerve is csupán alig hallható. Minden bemenetnél és saját rádióról. Próbálgatás során egyszer (megbontás előtt) majdnem tökéletes volt, ezért kontakthibára gyanakodtam. Szétszedtem és alaposan átforrasztottam minden esetleges hibaforrást, valamint átértem az alkatrészeket. "természetesen" a helyzet nem változott. Amiket kiokoskodtam feszültségeket azokat ellenőriztem és rendben vannak. Sajnos csak szétszerelt állapotban lehet rendesen hozzáférni..
Tehát most ismét ott tartok, hogy nagyon halk. Némítás működik és minden más funkció szabályoz. Magas, mély, hangszórók (front, center, stb) szintje is állítható csakúgy, mint az előre programozott hangzások.
Valakinek tapasztalata/tippje mi okozhat ilyen jelenséget?
Köszönettel: Kiss Z.
http://stereo.ru/before/images/profile/14396/img_big0.jpg
Sziasztok!
Fenti panelon az L102 mellett és a D101 fölött megégett 8 lábú smd eszköz van.Dc konverternek gondolom.Ami olvasható rakta 5.31. 5 AM. 7K.
Tud valaki segíteni? Üdvözlettel Reparator1
Fenti panelon az L102 mellett és a D101 fölött megégett 8 lábú smd eszköz van.Dc konverternek gondolom.Ami olvasható rakta 5.31. 5 AM. 7K.
Tud valaki segíteni? Üdvözlettel Reparator1
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