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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& S/ D- q$ |% o# @0 |* v) z) j% G6 D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
! e! v; i- A1 [# j摘自   Obsolete Media - Forum
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# q( n/ l& p8 {% n: s8 c5 ^http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
' T2 C, F* D, A6 ~' `& s' [http://obsoletemedia.com/geeklog/forum/print.php?id=2025

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Chip CX-032B for Sony TC-558
- R, ^9 o: Z1 N' z2 Q9 `: FPosted on: June 16 2008 @ 01:43 PM
* `" l  @- _  g$ f4 ABy: RODALCO
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2 Q8 y2 T* o. I5 M" xContent:
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Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.

' `) p! \7 k7 [  p1 c* z. yLuckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
- D6 R8 U* h( `A rare Sony turntable TTS 400 has the same chip used as well.
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The supllier on this link has the IC listed.
http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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8 E* z4 q( }/ ~The German Bandmaschinen Forum thread.
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  q2 N- H0 s. ], m- zhttp://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)
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Gru�, Raymond

: K! a+ ], ]/ `Chip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
: o- ?, r  V  i4 R- X# g! DBy: RODALCO
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Content:
" l4 Y( B% M1 Q3 \<b>visitorj</b>, can you make a photo of the IC and the board please ? and the schema if you have it?

5 \' Q% n3 x4 Y: [; E  F  HI 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 c, c3 `2 {( J0 PThis will help all Sony R2R users in the near future as well as our machines age over time.

* F4 b- p8 h) T( jKind regards, Raymond


0 S! o; k% b- o# y0 h- a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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8 B7 K/ E/ G" g' g3 }' Z' Ahttp://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！