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
  M9 H; D6 e+ J; O! X3 W摘自   Obsolete Media - Forum
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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
Posted on: June 16 2008 @ 01:43 PM
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Content:

$ g8 }8 R. E/ t' a1 A* q% x; fHi, 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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, \  U- H# o* {) zThe supllier on this link has the IC listed.
http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)

& g( q/ n/ \, K$ B) ZThe German Bandmaschinen Forum thread.

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

Chip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
By: RODALCO
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Content:
<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.
1 }; j8 S/ `) W- y0 X2 `This will help all Sony R2R users in the near future as well as our machines age over time.

; v3 i% t3 s- y8 [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


零件追蹤
: `4 ~1 L' U& rhttp://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！