求助：主马达不转

大头猪

& Z& o& N. ^/ m, d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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  R5 c5 r+ h+ F/ i: u$ o, ^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
! m, P6 Q1 Z9 A& D" d! U6 g% J; }摘自   Obsolete Media - Forum

  l0 H- Q$ l; p7 Q  Zhttp://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
  r) Q% }4 a6 q) J% T$ pPosted on: June 16 2008 @ 01:43 PM
* j  Y" i9 ]* F/ O- b- SBy: RODALCO

Content:
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Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.

) w, ~) r- T* R1 {7 @Luckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
5 S' O5 _  f0 QA rare Sony turntable TTS 400 has the same chip used as well.
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8 T: z) P( }9 m* K( o' QThe supllier on this link has the IC listed.
( H* w! \/ {8 z1 t+ a5 A% x8 khttp://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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5 |, Y" x; Z" j% X; g0 D/ NThe German Bandmaschinen Forum thread.
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http://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)

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.
This will help all Sony R2R users in the near future as well as our machines age over time.

( x3 q& f, ~' h$ [8 h+ SKind regards, Raymond

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1 V/ O2 t% l5 Q8 ?: W9 C6 c+ A6 R3 y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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, i, }$ V% g: O% X/ r: f# C零件追蹤
3 |, A' G9 l5 U$ t+ Phttp://www.globalsemi.com/productdetails.aspx?itemno=875032100
6 C) A' t5 o  a. N5 l39.99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！