求助：主马达不转

大头猪

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$ Z8 g9 }* @" T- C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。
控制转速的IC, SONY CX-032各脚电压值如图
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8 x# |: p  n. U: H# J. w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
5 m. s" _: ^6 O  @2 V+ z8 z摘自   Obsolete Media - Forum

9 j0 F: {% t; r" Phttp://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
8 t' G8 n% B5 R! F1 u% g* e7 w/ Fhttp://obsoletemedia.com/geeklog/forum/print.php?id=2025



Chip CX-032B for Sony TC-558
& X: K' A) f8 b0 w! \Posted on: June 16 2008 @ 01:43 PM
By: RODALCO
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Content:
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Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.

: L4 T  Z! ^. D" i) aLuckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
% `. w: [/ B- e5 q5 H: t% x1 ^. zA rare Sony turntable TTS 400 has the same chip used as well.
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$ d- ^& k4 p" A/ Y3 J% {8 e: FThe supllier on this link has the IC listed.
  r; {  n; _, f" B" _http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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The German Bandmaschinen Forum thread.
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# ]; H" m) M4 y' c# O$ Y8 xhttp://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)
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Gru�, Raymond

3 r) f  U4 B2 l6 e4 k6 ?Chip 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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I 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.

Kind regards, Raymond

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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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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
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大头猪

谢谢！