求助：主马达不转

大头猪

; M0 E% f& l/ A$ Y9 z& B: }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 }6 W/ G8 a5 @4 M' A控制转速的IC, SONY CX-032各脚电压值如图


0 N2 f* k5 ^/ w* E7 [* ~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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有人走過相同的路了
7 T" |, H) N  v3 D5 R8 J. q摘自   Obsolete Media - Forum

http://obsoletemedia.com/geeklog/forum/viewtopic.php?showtopic=2025
3 I" T9 [1 t4 C# e% i6 |  n! G' j/ xhttp://obsoletemedia.com/geeklog/forum/print.php?id=2025
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Chip CX-032B for Sony TC-558
0 D) y* ~( G1 I& e$ a+ NPosted on: June 16 2008 @ 01:43 PM
By: RODALCO
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Content:
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) `) |6 C6 j/ X; H5 I: [: ^+ \Hi, did a quick Google and found this link on a German Forum regarding the CX-032B chip.
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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.

3 S! g% c' D: y/ o  h) cThe supllier on this link has the IC listed.
( E4 J6 M6 y2 h& P  Zhttp://www.prelcoparts.com/sony.pdf                                             (沒有相關資料)
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0 A2 d4 ^1 |: i9 a7 xThe German Bandmaschinen Forum thread.

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

Gru�, Raymond
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: E/ h. a0 r% s+ JChip CX-032B for Sony TC-558Posted on: June 17 2008 @ 01:35 PM
By: RODALCO
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. k3 q7 _9 G( d7 V2 R6 a9 \) EContent:
<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.
This will help all Sony R2R users in the near future as well as our machines age over time.

( C+ L6 b5 K% z% s3 z' M! XKind 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


3 c* x, W* a, a. N2 f9 [4 e零件追蹤
8 k; B/ ?. @$ y4 w/ ~, _8 Whttp://www.globalsemi.com/productdetails.aspx?itemno=875032100
7 Y  f2 R' h" I39.99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！