求助：主马达不转

大头猪

3 G8 _( e) F( }1 Y8 @! g+ z
% m) l0 [2 ?: m  i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。
! U+ F- ^$ E  k) J9 J8 l$ B% B控制转速的IC, SONY CX-032各脚电压值如图
$ n( w% a$ E+ K: h
) @/ `; \  b1 k% N6 y+ Z$ y
8 N" c9 L* C* o0 s) t( N' a是IC坏了还是其它问题？如坏了，求着IC一块。谢谢！

yjwu

: ^0 z# T3 l! `3 }4 q! J# ~
% o% D+ J1 q8 j+ T8 r( R; H有人走過相同的路了
& s; K. I4 a' y$ D摘自   Obsolete Media - Forum

http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
http://obsoletemedia.com/geeklog/forum/print.php?id=2025


0 H$ D4 f2 k6 e# I, g. I$ P
8 b* g, X7 ]5 `6 |* X/ s) s: }Chip CX-032B for Sony TC-558
8 O2 ~& l# \; i7 M0 V. u: c* `Posted on: June 16 2008 @ 01:43 PM
By: RODALCO

+ h& }  L. X8 z" n7 |8 I) Q1 zContent:

Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
% f9 I  ^! L% n4 {" B( h6 L
- I; p) I$ E  p- WLuckily I can read German and donor machines could also be a Sony TC 440 and Sony TC 580 which have the same chip.
; W5 j* i1 A. u% H9 G3 s; fA rare Sony turntable TTS 400 has the same chip used as well.

+ `3 x0 x6 `2 N) [( g3 _) VThe supllier on this link has the IC listed.
http://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
9 V0 O8 V; x7 `1 G+ u
The German Bandmaschinen Forum thread.

http://mb.abovenet.de/forum2/showtopic.php?threadid=7232      ( 聯結失效)
9 S% v4 v( A/ Y1 d$ a' h3 ]
Gru�, Raymond
+ Z& ?/ O6 @+ `
Chip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
+ W5 f" O" @$ Q( `, J! X, d0 mBy: RODALCO

5 j% {" i5 ?& @Content:
4 j) O8 @' f. A2 ]2 B6 {7 X" C<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.
6 e8 C; v5 j' M
Kind regards, Raymond

8 x' N) f, {8 Q0 z) c: a
5 P/ _/ W/ ]4 U有沒有用零件做出等效的主軸控制還要進一步追蹤
! b: z, y* I3 I' F( O2 u

9 H5 P  T( y' G) Y$ A6 L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！