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。
2 k) G( A5 Z( s8 r+ B) @控制转速的IC, SONY CX-032各脚电压值如图

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! u4 V0 B9 t4 u& F是IC坏了还是其它问题？如坏了，求着IC一块。谢谢！

yjwu

# s3 V5 o/ w) A$ z' i有人走過相同的路了
3 K) w! s& o' n4 t" ~摘自   Obsolete Media - Forum
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0 p5 ?( y( D: I# m- g/ Mhttp://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
6 N: U+ M$ A3 e2 Bhttp://obsoletemedia.com/geeklog/forum/print.php?id=2025
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# R& ?6 C' \3 T$ ?Chip CX-032B for Sony TC-558
( Q& \& ?" D& m8 o* hPosted on: June 16 2008 @ 01:43 PM
- K: @8 L! X( O! s3 {By: RODALCO

Content:

Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
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; G- m0 |9 R# hLuckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
4 X5 G3 D- o0 q6 }. U- n& @8 qA rare Sony turntable TTS 400 has the same chip used as well.

7 A6 q% F% o+ g' h8 W* N% {" G" mThe supllier on this link has the IC listed.
http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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! j0 v8 k$ [- D9 x1 y$ Z7 BThe German Bandmaschinen Forum thread.

5 k" b( M' @9 G% Q  L. Qhttp://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)

' O7 W, j' y1 M9 |Gru�, Raymond
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% O" X8 P! \4 O9 `4 e3 I  QChip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
$ S" E  U8 O( o+ J0 d) v3 ]5 pBy: RODALCO
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/ ]; `  G! r, Q6 \5 j: N8 l2 a  YContent:
& q# w' p* j8 a2 Z<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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3 D% j3 M) [- N1 z! M: QI 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.
3 Y+ P+ `) v8 ?7 e2 cThis 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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% G+ D( H) I. R* r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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零件追蹤
- r  k1 c* W4 f* H( |  a5 chttp://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

大头猪

谢谢！