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。
/ H, ^% @1 G3 y) W0 [2 n0 \5 }控制转速的IC, SONY CX-032各脚电压值如图
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5 F" _. ~* p$ q4 U6 @' ~; X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

4 Y" o0 G& c& Y有人走過相同的路了
* `9 V3 l7 g9 M( b6 m摘自   Obsolete Media - Forum
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http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
+ n. p% r$ n1 i6 M; rhttp://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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$ `3 |! h3 Y/ o9 Q- F: Y3 sContent:

9 w9 n+ z0 {: RHi, 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.
, T) B* O$ E8 o( O  Y! ?A rare Sony turntable TTS 400 has the same chip used as well.
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# N6 ~2 p4 d8 j3 n+ k1 M* y8 H/ YThe supllier on this link has the IC listed.
. Y' O/ Z. A+ M! B3 t0 Ehttp://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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2 w! }( K) I2 HThe German Bandmaschinen Forum thread.
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+ L  ]/ ^; P  i5 x. `http://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)

8 R8 ]$ [# I; q; H7 n! y6 XGru�, Raymond

Chip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
* q7 D; J9 V* f! ]; xBy: RODALCO
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" T; Z) T% D# ^<b>visitorj</b>, can you make a photo of the IC and the board please ? and the schema if you have it?

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.
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; n$ h2 u5 s* ?+ l! QKind 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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http://www.globalsemi.com/productdetails.aspx?itemno=875032100
# {! L. j% `) _- x: z39.99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！