Service manuals, schematics, eproms for electrical technicians
JVC SX-DW303 POWERED SUBWOOFER
Type: 
(PDF)
(PDF)Size
1.3 MB
1.3 MB
Page
25
25
Category
AUDIO
SERVICE MANUAL
AUDIO
SERVICE MANUAL
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- Also known:
JVC SXDW-303 SUBWOOFER SXDW303 POWERED SXDW 303 SX DW303 SX-DW303
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Szervusztok!
A CD-játszó alaplapjáról hiányzik az R702 és a D704 poz. számú alkatrész. Az ellenállás 2,2Ohm, az már rendben, de a diódát nem tudom milyen volt. Próbáltam hasonlatosságot keresni a DX-MX70 torony lejátszójával. Abban van egy dióda ami a rajzolat (szitanyomás)szerint normál dióda, ám az alkatrész listán 5v1 zenerként szerepeltetik. Valami 2B felirat van rajta -nem forrasztottam ki- azonosítani nem tudom. Adnék egy esélyt ennek a szerkezetnek, mert maga a drive átépítve hibátlanul működik. Ebben kérem segítségetek.
Köszönettel: Bencsik
Üdv mindenkinek ! Keresem a fent nevezett erősítő rajzát . / jvc ax-r562 / . Előre is köszönöm !
Sziasztok!
JVC A-S5 HI-FI torony erősítő javításához keresek szakembert. Próbálták javítani, de nem volt hosszú életű...
Üdv: Tivi
JVC A-S5 HI-FI torony erősítő javításához keresek szakembert. Próbálták javítani, de nem volt hosszú életű...
Üdv: Tivi
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
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