Re: Kawai K5 upgrade ROMs

bill bigrig a écrit :
> Howdy,
>
>  You say to diconnect then reconnect the battery?
Yes, that's the only way to reset the RAM. I said a while ago to 
disconnect and reconnect the battery to reset the synth, and I just said 
to disconnect and reconnect the cables between MI-003 and the wheel.
> I forgot. The rest of your tips, I will try, and THANK
> YOU for this valuable info. i will do these tests and
> get back to you. THANX AGAIN!!!!
> Rig
>
>
> --- Antoine Deschênes <antdes45-FFYn/[email protected]> wrote:
>
>   
>> If the battery doesn't work, you'll just lose your
>> sounds every times
>> you start the synth. The ROM can't be damaged from
>> normal use. I'd try
>> to reseat(disconnect, connect) the cables related to
>> the switch and
>> wheels if I was you.
>>
>> To put back sounds you'll need the wheel to work :
>> You have to go in
>> the midi menu to enable SysEx receiving and
>> transmission, which is
>> sadly impossible for you right now.
>>
>> But if the buttons work and not the wheel, the
>> interface should still
>> work, unless you have an hardware problem
>> somewhere...
>>
>> OK, I looked at the schematic(All the following is
>> about the MI-003
>> circuit board). The two wheel encoder signals pass
>> through three 74HC
>> logic ICs to end in the same data lines as the
>> LCD(The CPU seems to
>> use the same data port for both) If your LCD works,
>> the problem is
>> more likely to be situated with the logic(Two
>> 74HC365 and a 74HC74) or
>> the wheel encoder itself.
>>
>> The encoder signals pass through R10 and R8 to go in
>> U9, then U12 and
>> U7. Maybe you could try to see if the signal
>> actually gets to R8 and
>> R10?
>> In my case, I briefly get some pulses on R8 and R10
>> while I turn the
>> wheel.(The encoder uses pulse switches)
>>
>> And now, on the MI-008 board, the two bottom pins
>> should feed 5v to
>> the encoder, and the top ones just send pulses when
>> it's turning.
>>