求助：主马达不转

大头猪

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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是IC坏了还是其它问题？如坏了，求着IC一块。谢谢！
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yjwu

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有人走過相同的路了
+ t# ~' i$ M9 A8 ?) d5 C摘自   Obsolete Media - Forum

* J& ?) U* L1 |; a3 Y, j0 fhttp://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
% O/ }. y% J5 p# |' a7 C4 phttp://obsoletemedia.com/geeklog/forum/print.php?id=2025
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Chip CX-032B for Sony TC-558
( C: Z3 q& F8 i1 I# g" N1 _+ s! CPosted on: June 16 2008 @ 01:43 PM
By: RODALCO
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Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
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6 n. p& g# `( l+ @Luckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
) I" P5 `0 F2 D) D0 ?A rare Sony turntable TTS 400 has the same chip used as well.

* O0 I0 N# O3 t/ p' dThe 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)
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$ L, I+ h8 j; OGru�, Raymond
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Chip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
7 R% s) M; l2 K7 [  j9 _By: RODALCO
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" r# L& p; K! @% H9 j) W<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.
$ Y2 C' J9 w7 q+ o# O1 HThis 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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( R; i1 h3 d* [$ s& W; y. \http://www.globalsemi.com/productdetails.aspx?itemno=875032100
% C9 _) A$ I- C39.99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！