Jump to content
Sony Insider Forums
Hungerdunger

Just bought an MZ-1, but can't eject the disc

Rate this topic

Recommended Posts

I finally managed to buy an MZ-1 on ebay and received it today. I put a recorded disc in to test it and everything went fine with play back, changing tracks etc, but when I tried to eject the disc, all I got was a lot of whirring and the display alternating between "Loading" and "Eject".

I've notified the vendor who says this has never happened to him. I'm hoping this may be a one-off and once I get the disc out I can try it with other discs to make sure it's OK. Trouble is I can't see any way of manually ejecting the disc. If this was my own machine that had suddenly gone wrong I'd probably try to take the case apart to see if I could get the disc out, but obviously I don't want to do that, so I'm wondering whether anyone else has had this problem and managed to find a solution.

Edited by Hungerdunger

Share this post


Link to post
Share on other sites

I finally managed to buy an MZ-1 on ebay and received it today. I put a recorded disc in to test it and everything went fine with play back, changing tracks etc, but when I tried to eject the disc, all I got was a lot of whirring and the display alternating between "Loading" and "Eject".

I've notified the vendor who says this has never happened to him. I'm hoping this may be a one-off and once I get the disc out I can try it with other discs to make sure it's OK. Trouble is I can't see any way of manually ejecting the disc. If this was my own machine that had suddenly gone wrong I'd probably try to take the case apart to see if I could get the disc out, but obviously I don't want to do that, so I'm wondering whether anyone else has had this problem and managed to find a solution.

Make sure it is stopped , and the Eject button has to be slowly pushed in and held for a sec , to activate the Motor , it is a Motorized eject system.

Not like the spring activated Eject of the new units .

Think 1969 Volkswagon here , you gotta nurse it into 2 gear sometimes ....................

( Also Slightly open the Door and push the disc back into it before you do the above)

Edited by Guitarfxr

Share this post


Link to post
Share on other sites

Make sure it is stopped , and the Eject button has to be slowly pushed in and held for a sec , to activate the Motor , it is a Motorized eject system.

Not like the spring activated Eject of the new units .

Think 1969 Volkswagon here , you gotta nurse it into 2 gear sometimes ....................

( Also Slightly open the Door and push the disc back into it before you do the above)

Thanks for the reply Guitarfxr. Unfortunately I've tried your suggestion of pushing in and holding the EJECT button. It gets the motor going, but for some reason it can eject the disc.

I'm not sure what you mean about opening the door. The slot where you insert the disc is covered by a flap which says "Disc is inside", but without forcing it, I can't see how to push the disc back in.

One final thought - there's a hole in the casing on the Optical/Line In/ Mic socket side. I can't see a mention of it in the manual but I was wondering whether a paper clip pushed in here might activate the ejection. (Like some CD Roms have). But again I don't want to risk anything in case I need to return it.

Edited by Hungerdunger

Share this post


Link to post
Share on other sites

Thanks for the reply Guitarfxr. Unfortunately I've tried your suggestion of pushing in and holding the EJECT button. It gets the motor going, but for some reason it can eject the disc.

I'm not sure what you mean about opening the door. The slot where you insert the disc is covered by a flap which says "Disc is inside", but without forcing it, I can't see how to push the disc back in.

One final thought - there's a hole in the casing on the Optical/Line In/ Mic socket side. I can't see a mention of it in the manual but I was wondering whether a paper clip pushed in here might activate the ejection. (Like some CD Roms have). But again I don't want to risk anything in case I need to return it.

I will look at mine ( It is buried in a Drawer at the moment )

Share this post


Link to post
Share on other sites

Make sure it is stopped , and the Eject button has to be slowly pushed in and held for a sec , to activate the Motor , it is a Motorized eject system.

Not like the spring activated Eject of the new units .

Think 1969 Volkswagon here , you gotta nurse it into 2 gear sometimes ....................

( Also Slightly open the Door and push the disc back into it before you do the above)

As a proud owner of an MZ-1, (which I got for in which everything works except for the record slide awitch, I have had no problems with it, either when I use it as a DJ set for my AK47 shows, or when I use it to dub MD > MD material, but I still kinda baby it whenever it comes to using it.

As for the 1969 Volkswagen analogy, I should know something about nursing something (mainly it) into gear, as I own a project vintage 1963 VW Twansporter Kombi Bus (dubbed PimpWagen), and I don't drive it like a Porsche mostly because of its age (a timeless classic!!!).

Here is a look at my rolling project:

1963PimpWagen-RightView.jpg

My 1963 VW Bus.... It gets from 0-60 in 3 days and I'm proud of it.

Share this post


Link to post
Share on other sites

I finally managed to buy an MZ-1 on ebay and received it today. I put a recorded disc in to test it and everything went fine with play back, changing tracks etc, but when I tried to eject the disc, all I got was a lot of whirring and the display alternating between "Loading" and "Eject".

I've notified the vendor who says this has never happened to him. I'm hoping this may be a one-off and once I get the disc out I can try it with other discs to make sure it's OK. Trouble is I can't see any way of manually ejecting the disc. If this was my own machine that had suddenly gone wrong I'd probably try to take the case apart to see if I could get the disc out, but obviously I don't want to do that, so I'm wondering whether anyone else has had this problem and managed to find a solution.

I had exactly the same symptoms on an MZ-1 a while ago. After opening the case and taking the whole machine apart, it appeared that it was indeed a physical problem in the ejection system. There is a gear somewhere that is responsible for engaging the physical ejection action (pushing the disc up, pulling the "disc is inside" cover down, sliding the disc out). This main gear gets rotated from another secondary gear on its side. For whatever reason, the main gear could not be completely rotated by the secondary gear (looks like a cog was missing, or maybe just had the wrong shape), so the secondary gear kept turning until the firmware decided that something was wrong and stopped trying to eject.

Gently pushing the main ejection gear towards the right direction invariably ended in correct ejection behaviour. However, this is only possible on an opened unit.

My assumption is that it is some kind of wearing/breaking problem that may appear after a unit was transported, or maybe something is obstructing the ejection mechanism. I was however not able to find any workaround to this problem for a closed unit, and I was never able to satisfactorily repair it. I eventually sent the unit back to its seller.

My advice would be to open the machine carefully and observe the physical ejection mechanism during ejection and load. Maybe you will find an ad-hoc solution.

Share this post


Link to post
Share on other sites

Thanks for your reply, Storm Shadow.

Since my original post I've taken all the casing off the machine, and with some gentle persuasion managed to get the disc out.

I tried other discs, as well as the first one, and although the MZ-1 seemed to make more effort than originally it still wasn't happy. However I found that by holding the machine vertically (i.e. with the slot at the bottom) it would eject 50% of the time. I presume gravity was helping it along.

Obviously I wasn't too happy about this, but as my main reason for having the machine was as a collector's item, I think I'll keep it. At least all the playback and record buttons operate normally.

Share this post


Link to post
Share on other sites

I guess this also explains why Sony and others abandoned this load/eject system on subsequent units.

Share this post


Link to post
Share on other sites

Hi guys,

should anyone still be interested in this thread, I have managed to source equivalent spur gears for fixing the infamous issue with the MZ-1 no longer ejecting disks. Just fixed mine for super cheap money. Not for the faint of heart, but doable.

Share this post


Link to post
Share on other sites

Hello, the supplier is http://www.kkpmo.com . 

Quite clearly, you will not find 1:1 replacements, but you can order custom made spur gears.

When you combine together the gears (special glue / brazing) and use proper shaft sleeves as spacers, you can get a perfect replacement for worn out or broken gears.

In my unit I had missing cogs on midway gears B and C 4-955-496/7, I replaced them with metal gears (brass). Module is M0.3.

I have now ordered some spares for a D-Z555 unit with stuck sled. In that case M0.25.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×