Chinon FZ-506 Rev A retrieve from an external Amiga Box

[DjErase]

Hello,

I bought some weeks ago a Kryoflux and was using it without problem to retrieve 5,25 880KB Amiga format disks.
I used a Mitsumi M90BCL-3 but after +/- 800 disks the Side 1 head refuse to rip data and it appears as "Format Unknown".
I opened the floppy to identify which head it was and it is the fixed one (the bottom one). Try to clean it up, ... but nothing worked.

Now I open an external 5,25 floppy box for Amiga 500 but it was a modified one with some custom soldering. The model is a Chinon FZ-506 Rev A.
I found the technical sheet and set the jumpers as it was on the doc, I remove all the home-made soldering and now I have a drive with 40 tracks instead of 80 when I use Kryoflux. The track 0.0 and 0.1 is green, then the others are greys (graphic interface) and when I scan it -> 40 tracks only.

There are 13 jumpers and here is the configuration I put: o = Open, - = Close

1 : -
2 : o
3 : -
4 : o
5 : o
6 : -
7 : o
8 : o
9 : o
10 : -
11 : o
12 : o
13 : -

Before there was an interrupter on the external box saying 40 or 80 tracks. it connected a wire between ground and the circuit somewhere. I took pictures of the drive with all the home made wire (Amiga modifications).

Is there a way to restore it as an original IBM PC Drive, maybe some bad jumper settings or a soldering to do ? Is there someone who can post picture of the controller card of the drive and jumpers settings ?

Here are links to drive with hardware modification from the Amiga external box:
http://DjErase.no-ip.info/ATROUVER/525drive/IMG_1035.JPG
http://DjErase.no-ip.info/ATROUVER/525drive/IMG_1036.JPG


Original Jumpers settings (for Amiga)
http://DjErase.no-ip.info/ATROUVER/525drive/IMG_1038.JPG


Chinon PDF
http://DjErase.no-ip.info/ATROUVER/525drive/Chinon_FZ506.pdf

Thanks a lot

[DjErase]

Hello,


That's the problem: find a 5,25 in good condition and non modified.
I have 4 external 5,25 modified that are working fine on my Amiga.
I have 1 5,25 PC unmodded and apparently it's a problem of alignment of the heads. I successfully recovered from tracks 0 to 48 (manual adjust) but after there are read errors (the 5,25 disk on Amiga drive pass all the tracks with X-COPY without error).

So if someone have a clue