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。
2 r8 O. B3 b" O  b, l8 D% I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！
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yjwu

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有人走過相同的路了
! X9 _& H4 n& M8 ]3 Y: C$ B摘自   Obsolete Media - Forum
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http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
* M8 p8 q- t3 z4 zhttp://obsoletemedia.com/geeklog/forum/print.php?id=2025



% q6 d8 x% r6 U1 K' R1 _Chip CX-032B for Sony TC-558
, w( H* i# U2 X7 \$ |& MPosted on: June 16 2008 @ 01:43 PM
By: RODALCO

+ {' z& ]; b9 M4 |+ G9 vContent:
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Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
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5 F( M' N1 C" i' d# h( R0 w- wLuckily 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.
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The supllier on this link has the IC listed.
  p0 W# b7 ~2 C2 r8 {8 ahttp://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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The German Bandmaschinen Forum thread.

http://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)
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Gru�, Raymond

2 Q% V7 p  \) y* e# E, E: a0 rChip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
By: RODALCO
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<b>visitorj</b>, can you make a photo of the IC and the board please ? and the schema if you have it?

* W% G3 }2 u  M2 {1 G( \7 II 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.
$ C& y+ R$ }, B) I/ x) YThis will help all Sony R2R users in the near future as well as our machines age over time.

7 I: |: ~! T8 r" JKind regards, Raymond
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) @9 o& q2 x2 Q% y& i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
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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！