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Message

Re: Nothing but "nd"

2009-10-22 by edo_arengi

Hi all!

It's me again! I found some info regarding my problem searching the forum: "Lh" means "locked head" so my floppy drive is probably gone.
What a great forum! I am happy to have a Prophet VS and now this new 2002, I hope to get it up and running :-)

Edo

 

--- In prophet2000@yahoogroups.com, "edo_arengi" <edoardo.arengi@...> wrote:
>
> Hi!
> 
> I just joined this group. Today I got an used 2002 and unfortunately I have problems with the floppy drive. But istead of getting the "nD" message I get again and again a bliking "Lh" message. If I i.e. choose to format a floppy I put into the drive, the drive gives a spin, the red light lights for 1 second or so and I get that "Lh" on the screen.
> 
> Any idea?
> 
> Thank you!
> 
> Edo
> 
> 
> 
> --- In prophet2000@yahoogroups.com, Rob Miller <dpc318@> wrote:
> >
> > Well, I replaced the 7406 buffer chip between the floppy controller and 
> > the drive, and while the individual logic is better on the chip, it
> > did not resolve my "nD" issue.
> > 
> > My drive seems to be spinning all the time while a disk is in it,
> > with the red LED on.  Is this normal?  I don't remember.
> > 
> > Rob
> > 
> > Henrik wrote:
> > >  
> > > 
> > > It was a temporary problem on mine. Now it works again.
> > > 
> > > --- On *Tue, 10/13/09, Rob Miller /<dpc318@>/* wrote:
> > > 
> > > 
> > >     From: Rob Miller <dpc318@>
> > >     Subject: Re: [prophet2000] Re: Nothing but "nd"
> > >     To: prophet2000@yahoogroups.com
> > >     Date: Tuesday, October 13, 2009, 3:03 AM
> > > 
> > >      
> > > 
> > >     Well, I might be making some progress. There's a "buffer" chip, a 7406,
> > >     that's identified as U201. It sits between the floppy controller and
> > >     the header P202. On two of the hex inverted pairs they don't seem to
> > >     be inverting the signals. Namely, pins 1/2 and 3/4.
> > > 
> > >     Does anyone have a clean copy of the schematics? I'm having a hard
> > >     time ready what each of the pins do on the online version. This is
> > >     on what appears to be drawing SD 2000-2.
> > > 
> > >     This is a very inexpensive part, so I might just pull it, socket
> > >     a new one, and try.
> > > 
> > >     Rob
> > > 
> > >     Henrik wrote:
> > >      > Same problem here too.
> > >      >
> > >      > --- On Thu, 10/8/09, j. aaron <tomkah@yahoo. com
> > >     </mc/compose?to=tomkah%40yahoo.com>> wrote:
> > >      >
> > >      > From: j. aaron <tomkah@yahoo. com
> > >     </mc/compose?to=tomkah%40yahoo.com>>
> > >      > Subject: Re: [prophet2000] Re: Nothing but "nd"
> > >      > To: prophet2000@ yahoogroups. com
> > >     </mc/compose?to=prophet2000%40yahoogroups.com>
> > >      > Date: Thursday, October 8, 2009, 10:51 PM
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      > ive experienced this same problem
> > >      >
> > >      > the original 2002 drive died, so i picked up a suitable
> > >     replacement on ebay
> > >      >
> > >      > making sure the jumpers were correctly aligned
> > >      >
> > >      > same thing, ...drive powers up, disc takes a spin and then 'nd'
> > >      >
> > >      > since that drive only cost me $10, i decided id try buying another
> > >      >
> > >      > suitable replacement off ebay (different model than the first),
> > >     that i also jumper configured correctly and got the the same result
> > >     ...'nd'
> > >      >
> > >      > i tried switching things around a bit but sort of gave up on it
> > >     at that point
> > >      >
> > >      > im still over $40 ahead of the $70 whine country wanted for a new
> > >     one,
> > >      >
> > >      > so i figured eventually ill try getting another one off ebay sometime
> > >      >
> > >      > and repeat the process, but i really couldnt find a reason why
> > >     those drives werent functioning
> > >      >
> > >      > this discussion has rekindled my interest in getting my 2002
> > >     going again
> > >      >
> > >      > i put a ton of work into sampling back in the late 80's/early 90's
> > >      >
> > >      > and id like to revisit some of those sounds
> > >      >
> > >      > ...heres hoping help arrives!
> > >      >
> > >      > -yeller
> > >      >
> > >      >
> > >      >
> > >      > --- On Thu, 10/8/09, Rob Miller <dpc318@sbcglobal. net> wrote:
> > >      >
> > >      >
> > >      >
> > >      >> From: Rob Miller <dpc318@sbcglobal. net>
> > >      >
> > >      >> Subject: Re: [prophet2000] Re: Nothing but "nd"
> > >      >
> > >      >> To: prophet2000@ yahoogroups. com
> > >      >
> > >      >> Date: Thursday, October 8, 2009, 12:06 PM
> > >      >
> > >      >> I didn't change the jumper on the
> > >      >
> > >      >> factory drive that selects DS0, and
> > >      >
> > >      >> the replacement from WC doesn't have any. The power
> > >      >
> > >      >> cord has to flip
> > >      >
> > >      >> between the stock and the replacement (and the
> > >      >
> > >      >> replacement instructions
> > >      >
> > >      >> indicate so). I have flipped back and forth the data
> > >      >
> > >      >> cable, since there
> > >      >
> > >      >> is no real keying to it.
> > >      >
> > >      >> I hope it's not the driver chip. I can replace
> > >      >
> > >      >> it, but it should would
> > >      >
> > >      >> be easier not to. The drive spins up on power up, but
> > >      >
> > >      >> doesn't seem to
> > >      >
> > >      >> seek when I try to move data to/from it.
> > >      >
> > >      >
> > >      >> I'll keep poking around and see if I can get the right
> > >      >
> > >      >> combo working
> > >      >
> > >      >> now. I appreciate the forum's help!
> > >      >
> > >      >> Rob
> > >      >
> > >      >
> > >      >> duncan wrote:
> > >      >
> > >      >>> have you got the jumpers in the right place on the
> > >      >
> > >      >> drives? I hope when you say "flipped" you don't mean
> > >      >
> > >      >> "reversed".. .. I killed a floppy drive doing this by
> > >      >
> > >      >> accident.
> > >      >
> > >      >>> the floppy disc driver chip is fairly standard, I
> > >      >
> > >      >> think, but would be a tricky job to replace....
> > >      >
> > >      >
> > >      >>> I have the boards from my 2000, which had a dead
> > >      >
> > >      >> keyboard controller (which WC couldn't help with- it was a
> > >      >
> > >      >> custom IC)... let me see if I can locate anything useful on
> > >      >
> > >      >> them for you, & let me know how you get on. I have to
> > >      >
> > >      >> strip some bits off them for another forum member whose
> > >      >
> > >      >> patience must be running out by now.... :-/ I've been a bit
> > >      >
> > >      >> busy this year....
> > >      >
> > >      >
> > >      >>> --- In prophet2000@ yahoogroups. com,
> > >      >
> > >      >> Rob Miller <dpc318@> wrote:
> > >      >
> > >      >>>> I'm hoping I can get some help here....
> > >      >
> > >      >
> > >      >>>> My 2000 is now running 4.3b with a brand new
> > >      >
> > >      >> drive...but it STILL
> > >      >
> > >      >>>> gives me "nd" (no disk) whenever I try to do
> > >      >
> > >      >> anything with the
> > >      >
> > >      >>>> drive. I can't read factory disks on power
> > >      >
> > >      >> up, nor can I load
> > >      >
> > >      >>>> single sounds, and I can't format a disk. I
> > >      >
> > >      >> get the same "nd"
> > >      >
> > >      >>>> every time.
> > >      >
> > >      >
> > >      >>>> I've flipped the drive cable, and now have two
> > >      >
> > >      >> drives (original
> > >      >
> > >      >>>> and WineCountry new one) and they perform the
> > >      >
> > >      >> same.
> > >      >
> > >      >
> > >      >>>> Rob
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >
> > >      >> ------------ --------- --------- ------
> > >      >
> > >      >
> > >      >> Yahoo! Groups Links
> > >      >
> > >      >
> > >      >
> > >      >> mailto:prophet2000- fullfeatured@ yahoogroups. com
> > >      >
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