Problem on SONY CD Player CDP-203 - diyAudio
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Old 26th December 2003, 12:17 AM   #1
DeeGee is offline DeeGee  Netherlands
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Join Date: Dec 2003
Location: Haarlem/Netherlands
Default Problem on SONY CD Player CDP-203

Hi all audio/electronic fanatics,

To resolve an electronic problem in my (more than 10 years old) SONY CDP-203 CD player I need a wiring diagram / service manual.

The problem is that, after loading an audio CD (I think the CD turns at proper speed) it is not read at all and after a few seconds the CD is ejected.

One of the symptoms is that two medium power driver-transistors (of a group of eight), driving the CD-unit motors/lens assembly, become very hot.
All voltages ('silk-screened' on PCB) OK, testing the driver transistors with Ohm-meter OK.

No result on searching the internet on this problem/service manual.

My background is electronic engineer, measuring tools such as Textronic-scope, mutimeters, signal generator etc. are available.

Is anyone able to:

1. assist me how to resolve this problem, or

2. deliver me a soft-copy or PDF of this diagram/manual or advise me how to get it?

Buying a new CD player is not the case, the challenge is to repair the old one.

Thanks in advance for your effort/reply.

DeeGee.
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Old 26th December 2003, 08:23 PM   #2
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
you need the digital forum for this !

sreten.
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