求助：主马达不转

大头猪

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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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. n! ^) w0 p  k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

+ _( l& _4 F1 k' O% ~, ?) S+ Y有人走過相同的路了
4 Y* c) p& ]! d5 H; T/ S1 `摘自   Obsolete Media - Forum
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http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
8 c7 X0 Z9 j) G" Chttp://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
By: RODALCO
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Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.

- X& ^1 S+ l7 i( e( fLuckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
) T0 ]' t9 e! e+ dA rare Sony turntable TTS 400 has the same chip used as well.
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, @% r8 Y# ]. U9 pThe supllier on this link has the IC listed.
http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)

The German Bandmaschinen Forum thread.
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9 s- J. p0 L+ @$ X) n/ jhttp://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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5 |# f4 L5 h, \: T5 o8 I2 a<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.
0 ~' o' S1 ]1 D% M# E' pThis will help all Sony R2R users in the near future as well as our machines age over time.

, p0 {- ?. g9 u1 _$ Q7 SKind 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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9 ^" P) U4 R  u, |8 q# I$ c零件追蹤
; {; d! l- O( x9 _http://www.globalsemi.com/productdetails.aspx?itemno=875032100
/ D2 h3 T) w* j  f- u39.99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！