Vintage Synth Repair

Thanks for the help John, it got me in the right direction, there are a few solderable jumpers that goes to pin 2 (which is for disk change in shugart) but there are too many options. I soldered a button between ground and pin 2 on the disk drive so now I can fake a disk change signal when i replace the disk, I just replace the disk and press the button shortly. It's a shame I haven't been able to get it to work when I'm this close. Well, I ordered a HxC floppy drive emulator instead...

--- In vintagesynthrepair@yahoogroups.com, "John Rose" <johnhenryrose@...> wrote:
>
> Hi,
> 
>  
> 
> I have seen this on some old computers where there is a disk loaded or
> unloaded signal that can be sent back from the drive, some systems ignored
> it but others needed to get the disk unload signal in order to handle the
> disk change correctly, on some of the drives it was a jumperable option,
> unfortunately I can't remember the exact details as it was a long time ago,
> but I am sure if you look for settings on the drive related to this it will
> make sense.
> 
>  
> 
> Many thanks
> 
>  
> 
> John Rose
> 
>  
> 
> (www.astrodevelopments.com)
> 
>  
> 
> From: vintagesynthrepair@yahoogroups.com
> [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Mikael
> Sent: 28 April 2013 18:59
> To: vintagesynthrepair@yahoogroups.com
> Subject: [vintagesynthrepair] Ensoniq EPS-16+ Disk Drive Replacement
> 
>  
> 
>   
> 
> Hi everybody! :)
> I recently bought an Ensoniq EPS-16+, seems good otherwise but the disk
> drive is bad, it manages to read a few disks only. The original drive in my
> EPS is a Panasonic JU-257A303P. 
> 
> I thought I would try to modify a PC disk drive for it, I almost got it to
> work. I have successfully modded JU-257A606P disk drives for Amiga, it's
> quite easy and that model is very easy to find for a couple of euros, I had
> one of those lying around so I used that. That model has solderable jumpers.
> I set the jumpers as the original drive: D0 instead of D1, MS instead of M0,
> RY instead of DC (ready signal on pin 34). I then soldered a wire from the
> DC signal (disk change) to pin 2.
> 
> This is how far it gets now; when I insert the disk with the operating
> system, it loads fine but then when I change to a sound disk and try to load
> sounds, I can see what files are on the disk but I keep getting a message
> that the drive is not ready and that disk has been changed so I can't load
> sounds. 
> 
> I'm SO close to getting this to work, would anybobody have any hints, maybe
> some of you have tried this before for this particular synth or for another.
> 
> Thank you for any help/hints in advance!
>