求助：主马达不转

大头猪

1 K/ r% ?: d* P/ u$ e, u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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7 b% e- ?  U. o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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& b# u  F0 P8 n( u) @有人走過相同的路了
1 ?5 N7 W$ O: w: p" D7 u+ W摘自   Obsolete Media - Forum
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http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
( Q3 Y; A9 O: t3 ?# ~+ Q7 K! Ihttp://obsoletemedia.com/geeklog/forum/print.php?id=2025
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, T9 ~+ V; c3 J+ {. NChip CX-032B for Sony TC-558
* [: Q- u+ o: l1 aPosted on: June 16 2008 @ 01:43 PM
By: RODALCO

Content:
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Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.

3 v- ]7 f: a2 V: `/ o# i& y+ rLuckily 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.

8 c) H( z) ], q7 Y. S8 v, ~" S9 ?$ W: c/ Z+ }The supllier on this link has the IC listed.
6 W* F+ t: ~" _5 H; |, dhttp://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)

( M+ C5 R8 O! HGru�, Raymond
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& l8 Y: I! @  S) Z2 d0 U* k8 tChip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
/ }9 d- ]1 F8 k  ^' WBy: RODALCO
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# }, x! S( C" W& s/ k  c$ _% W<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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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.
+ j+ l% J' W; L' W+ W, sThis will help all Sony R2R users in the near future as well as our machines age over time.
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  n9 E4 i+ e! z- OKind 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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5 H: N' j/ Z% J5 U( K7 U/ Z, O零件追蹤
http://www.globalsemi.com/productdetails.aspx?itemno=875032100
4 u! x) ?0 h' s  a" s. W6 Y( W" b7 u39.99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！