Hello p6ters
I have a new chapter...
1) The Key assigner problem is gone (was not a Key assigner problem!).
2 short circuiting cables connecting the keyboard to the klm366 were
the culprit.
The synths works perfectly in Manual mode, but if I select a memory
patch, I get always the same stupid sounds.
Every time, I create a new sound and I save it (memory enable) if I
reselect it, the sound is gone!
I tried many times to load sounds from TAPE (computer): the procedure seems OK
(correct sequence of lighting LEDs) but no sounds are really charged.
Is this a problem of the 5514 ? Or can be the 4042 latches ?
I really don't know...
thank you
at
On 1/4/07, gmanca101 <gmanca101@yahoo.com> wrote:
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> If you have dismounted the keyboard in the sense that you left the
> circuit board connected to the main board but removed the membrane, do
> a continuity test to see if the two halves of the pad are engaged. I
> had a keyboard once that had a microscopic connection that caused the
> connection to be made.
>
> --- In PolySix@yahoogroups.com, "atuzzi" <antoniotuzzi@...> wrote:
> >
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> > Hi polyfriends,
> >
> > I decided to help my brother to resurrect his p6...
> >
> > YEEEEEEkkkk: acid!
> >
> > Ok you know was completely blocked, everywhere, everything...
> >
> > action taken the OLDCROW procedure:
> >
> > 1) removed battery
> > 2) removed ic30 and 31
> > 3) checked continuity
> > 4) recreated dead traces
> > 5) new lythium battery with diode in place and no more c40
> > 6) new socketed 74ls08 ic30 and ic31
> >
> >
> > status:
> >
> > A) all digital control are ok (effect type, waveform, sub ecc ecc)
> > B) all buttons of the programmer are ok
> > C) I can see data changing on TP2 (I have no oscilloscope in place,
> > but only a DM and a Logic probe (I'm not in my lab...))
> > I can see minimal variation coming out from the comparator (lm393) but
> > after that, the data is going in the 8748 (T0 pin 1) and is Missing in
> > Action.
> > I can see the inhibit working on the 2 4051, that should distribute
> > the data on the buffers. But data at the output of the buffers is all
> > blocked (all maximum value seems)
> >
> > D) Key assigner problem:
> > every time the p6 is turned on the note #56 (G in last octave) is on
> > (GATE 0 is on). I need to switch the arpeggio on and off (or jump to
> > unison and back to poly) to turn the note off.
> > if an arpeggio is started, that #56 results always on.
> > Is not a contact problem (I dismounted the keyboard). So seems another
> > IC problem: Does anybody knows the correct logic test to do to
> > individuate the faulting IC ?
> >
> > E) As I have a couple of 8748 and a programmer is the .bin for the p6
> > available somewhere ? (I'd like to have a backup for the 2 p6)
> >
> >
> > thank you for your help
> >
> > antonio
> >
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