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Re: [prophet2000] Re: Nothing but "nd"

2009-10-30 by Rob Miller

I haven't fixed it yet unfortunately.  I'm still working on it, and will accept any
advice.

Rob

got_hatchet wrote:
> So how did you fix the ND error? Im having the same problem and was watching your posts.
> 
> --- In prophet2000@yahoogroups.com, Rob Miller <huskies@...> wrote:
>> Edo,
>>
>> I was able to disassemble my original drive and carefully clean the
>> transport rod that the head goes on.  It was full of dried lubricant,
>> acting like glue.
>>
>> Rob
>>
>> edo_arengi wrote:
>>> 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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>>>
>>>
>>>
>>> ------------------------------------
>>>
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>>>
>>>
>>>
> 
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