求助：主马达不转

大头猪

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/ S) ~/ L" G3 F4 v" D1 S2 C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。
" E# D1 f0 W# G3 T0 B! a控制转速的IC, SONY CX-032各脚电压值如图
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: f" }6 M* K5 |8 K) c9 X是IC坏了还是其它问题？如坏了，求着IC一块。谢谢！

yjwu

有人走過相同的路了
8 F2 a0 C& G) N+ f, ?# |摘自   Obsolete Media - Forum

! }2 p% ]0 @3 z2 x" Z3 D3 ~3 ghttp://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
http://obsoletemedia.com/geeklog/forum/print.php?id=2025
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Chip CX-032B for Sony TC-558
# D. P- ^* H, Z7 I& N6 FPosted on: June 16 2008 @ 01:43 PM
By: RODALCO
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& F5 j' |0 b. M0 |5 w1 Q, K& UContent:

. `8 k) i7 W1 I( BHi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
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$ ^6 A1 \- Q5 Q0 vLuckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
! i! A/ G3 m) g, ^& hA rare Sony turntable TTS 400 has the same chip used as well.

9 k0 I1 U/ v3 q8 A9 q: w& }) iThe supllier on this link has the IC listed.
http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)

% i5 d- O, S" ?. o) L9 e# Q6 i2 kThe German Bandmaschinen Forum thread.

http://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)
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* F  b0 ?2 T3 ~6 b0 ~Gru�, Raymond

Chip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
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5 L" k( B6 t- @; b: S<b>visitorj</b>, can you make a photo of the IC and the board please ? and the schema if you have it?

6 @" ^* Z% ~* l: r9 x* J, |/ jI 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.

/ L3 A2 T% O3 K+ N. Q3 v) uKind regards, Raymond
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$ t, O% C- Z4 V( |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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( \+ W4 V1 Q) T; g% p零件追蹤
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

大头猪

谢谢！