求助：主马达不转

大头猪

2 n# J' s* s' D& e- x新年捡了部SONY TC-580，遗憾的是主马达不转，经检测怀疑是转速控制电路故障。如如图加一个电阻，主马达会转，改变阻值便可改变马达转速，但转速很不稳。
! X' [8 p4 U8 ]. C' }8 h控制转速的IC, SONY CX-032各脚电压值如图
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+ @- t3 B6 `: u' f是IC坏了还是其它问题？如坏了，求着IC一块。谢谢！

yjwu

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有人走過相同的路了
" U8 h9 u9 H$ V( ]! W# W摘自   Obsolete Media - Forum

http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
http://obsoletemedia.com/geeklog/forum/print.php?id=2025
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Chip CX-032B for Sony TC-558
) d' R6 Q+ ~& x! B( A$ ^6 N0 j8 MPosted on: June 16 2008 @ 01:43 PM
By: RODALCO

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1 }5 o4 h8 s5 @" M3 m2 j! ~6 u/ G, h4 sHi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
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Luckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
A rare Sony turntable TTS 400 has the same chip used as well.
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The supllier on this link has the IC listed.
http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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The German Bandmaschinen Forum thread.

http://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)

Gru�, Raymond
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, |: L1 ?4 f  B& Y4 kChip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
By: RODALCO

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<b>visitorj</b>, can you make a photo of the IC and the board please ? and the schema if you have it?
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9 l2 M, x# J$ f6 y: OI got some of my Dutch R2R friends to have a look at it as well and with a bit of luck they can design a circuit with disrete components.
This will help all Sony R2R users in the near future as well as our machines age over time.
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4 \- z" n. w/ I- ]' LKind regards, Raymond


1 [" T, E+ l+ f/ O有沒有用零件做出等效的主軸控制還要進一步追蹤
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零件追蹤
* l8 r% t0 F! y+ Z: D: y% A& [http://www.globalsemi.com/productdetails.aspx?itemno=875032100
39.99美元 似無存貨 必須從其他舊機器拆 不過可能也是相同的毛病    -->  設計的弱點

大头猪

谢谢！