Hi,

I could solve the problem by an ugly trick (this is a "don't do this at
home" description): First I removed the EPROM and switched the MS-404 on
and after some seconds switched it off again. I replugged the EPROM and
tried the MS-4040, but the action hadn't changed anything.
Then I removed the EPROM again, switched the MS-404 on and pressed my
fingers on the soldering side of the pcb on the pins of the processor.
The fingers seem to act like a pulldown resistor. At least the internal
RAM of the processor seems to have been resetted by this action. Now the
learn mode accepted Program changes again and I could set the assignmode
to last note again.

Nevertheless it seems, that the processor of the MIDI-interface MS-404
reacted wrong on some MIDI messages from Logic while the interface was
in the bootup phase.

Regards, Florian

Florian Anwander wrote:

> Hi,
>
>
> I am running in the same problem as Mark Kono did in June:
> My MS-404 worked fine with MIDI; I used it as MIDI-Slave of a MIDI
> keyboard or with an Alesis MMT-8 as Sequencer. Now I connected the
> MS-404 to Logic Pro and it shows the same behaviour as Mark described:
>
> MIDI-Note on produces a positive Gate and a Note CV of 0 Volt.
> I can change the reference note in MIDI-Learn Mode, but the Learn Mode
> appearently does not react on Program changes, because I cannot change
> e.g. the trigger polarity (prgchng #7 or #8).
>
> I usually have the EPROM with revision 1.05, but also tried Revision 1.03.
>
> I tried the reset described in the Manual of the MCV4(as recommended
> from Dieter): press and hold learn butt, switch on and hold until learn
> LED starts blinking; after that switch off an on again. But it did not
> work: after switching on with pressed Learn-button the Learn-LED never
> started blinking.
>
> So how can I make the MS-404 react on MIDI again
>
> Florian
>
> PS: The MS-404 works fine under control of an external CV in. There is
> no voltage change happening already at the output of the D/A-converter.
> Hardware defect in the D/A is possible, but I don't assume so, because
> the Gate is working.
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>