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Apple CD 300 (SONY CDU-8003A) ejects caddy


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I got hold of a Apple CD 300 (SONY CDU-8003A) drive that turns on and shows up on the SCSI bus when I list all the devices. I when I try to put a caddy into it, it just ejects the caddy instantly. I opened it up and cleaned the laser head with some alcohol, but it still acts the same way. 

After I cleaned it and put it together the caddy slot won't open automatically any more either, so I have to manually open it for the caddy to be ejected. Everything looked ok when I opened the box, no faulty hinges or anything I could see.

 

 

Does anyone have a idea how to fix it?

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The cd caddy slot opens when I put a caddy into it, and then the "CADDY LOADED" slot comes down, but it won't go up any more until i push it up by myself. I didn't see any switches, but maybe there is and it came loose when I opened it? Or the caps on the board attached to the front bezel board are not working and have something to do with it.

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The drive itself should be a Sony CDU561-25. I have a teardown guide for a next drive that is very similar here: http://www.asterontech.com/Asterontech/next_cdrom_refurb.html

 

On your drive the inject motor will be connected by a ribbon cable to the logic board which will have a layout that is close to the one pictured. The bezel board is likely not the issue. I think the caps on the logic board are the likely suspect. Unfortunately if it's the motor itself going bad it's a full tear down to get to it, which may not be worth the effort. If after replacing the caps you want to give it a shot be mindful of the springs which suspend the mechanical parts in the enclosure. There is one at each corner. There shouldn't be belts in this drive. 

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I have one of these drives doing the same caddy eject thing. It probably is a cap issue. Oddly enough, the caps look fine and there's no obvious leakage on the component side of the board, but there's a real mess on the underside of the board around each set of caps. I can't quite figure out how it got there. The board mounts with components facing down, so maybe the electrolyte evaporates and then condenses on the other side?

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  • 2 weeks later...

I have one that is doing that and I took the easy way out. I replaced the mechanism with a working one from a donor.  Since I know that I am just putting off the inevitable, let us know if you come up with a more permanent solution.

Edited by Juror22
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