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。
1 S# T" |$ X3 t, Y! Z* j7 I控制转速的IC, SONY CX-032各脚电压值如图
' t! O8 j7 N. A# I& z2 [) s' U
2 w" E) f; ]) o) k# ~: N( @! b  H
是IC坏了还是其它问题？如坏了，求着IC一块。谢谢！
- W( x/ g! u# \9 V1 i5 y" u1 W

yjwu

3 ~6 [4 y/ \) h7 V- L% r有人走過相同的路了
摘自   Obsolete Media - Forum

/ \; w9 u% Q% x" {! chttp://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
http://obsoletemedia.com/geeklog/forum/print.php?id=2025
; Q2 S( O! w, ], a" J$ O. i3 C


; M$ n5 Z4 ?6 G% l+ H1 L# kChip CX-032B for Sony TC-558
6 O3 n( |% |4 d- k$ B2 K& W, W: o9 p' lPosted on: June 16 2008 @ 01:43 PM
By: RODALCO
- w1 {; i& H) ~" E7 [" \# _
% r0 E) r# G2 K! K" }# j' l5 ?Content:
5 a) \. t7 K9 b* k
8 x0 Z# _1 h8 m  V* uHi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
/ B6 G+ y" ~4 T, A+ v! }4 w8 i
2 J1 d8 v9 B8 t# D9 `3 ]Luckily 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.
7 Z9 V) V  p5 j& N
. R2 W; M0 I$ Y3 JThe supllier on this link has the IC listed.
7 P+ q9 _! e& Mhttp://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
, H- |0 R/ e1 r1 ^% {. c; ?+ d/ z, A
The German Bandmaschinen Forum thread.

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

3 s% n' R0 w; ~" Q, eGru�, Raymond

( K2 m2 U! C3 n. Y7 s) ~/ f3 LChip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
. _, \' L; M2 N" T6 Y! K' XBy: RODALCO

1 r, q  ?. k' ~Content:
<b>visitorj</b>, can you make a photo of the IC and the board please ? and the schema if you have it?
: B- _% y# d/ W1 q8 H
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.
9 L& M( n8 @0 k) w+ J3 gThis will help all Sony R2R users in the near future as well as our machines age over time.
9 p, }1 y. s2 `6 h! m3 X1 ?6 i
Kind regards, Raymond


, w3 A5 y8 D, |5 X: N有沒有用零件做出等效的主軸控制還要進一步追蹤


零件追蹤
/ B2 G6 f% p# f1 @" x( R4 Jhttp://www.globalsemi.com/productdetails.aspx?itemno=875032100
- `" K+ n5 E% u& ]5 z39.99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
7 e) Y" z' A9 F7 E

大头猪

谢谢！