Doepfer

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
> 
> 
> 
>  
> 
> 
>