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！

yjwu

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" p# X, T, G& n* L9 f5 R有人走過相同的路了
摘自   Obsolete Media - Forum
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5 s, e) K' T# j* O5 O: ^3 z2 Thttp://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
7 f* {/ A6 Y4 @http://obsoletemedia.com/geeklog/forum/print.php?id=2025

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/ |5 T. X$ @: eChip CX-032B for Sony TC-558
: s9 A  ?2 W: M5 uPosted on: June 16 2008 @ 01:43 PM
By: RODALCO
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Content:

& w# x/ p9 p- R, B+ m# J9 c; @Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.

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.

+ s. A0 ~- B5 K' V! f: DThe supllier on this link has the IC listed.
0 o; z6 j% w* p$ d3 Ghttp://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)

7 C/ s, j* ~  dThe German Bandmaschinen Forum thread.
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$ m# @7 ^5 d$ H  ?* P- {6 i) \http://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)

Gru�, Raymond
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& P6 N/ a  L* q" }' GChip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
' \7 z$ B* ~6 W  S3 XBy: 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?

5 z  _6 o* S. j! LI 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.
6 _- `) ]3 q1 k8 @7 kThis will help all Sony R2R users in the near future as well as our machines age over time.
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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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1 f3 q/ i4 C$ U零件追蹤
7 v7 @. [; N  ~" I  x: q- R8 {http://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！