• Willkommen im KAWAI Forum!
Hallo, Gast! Anmelden Registrieren


Themabewertung:
  • 0 Bewertung(en) - 0 im Durchschnitt
  • 1
  • 2
  • 3
  • 4
  • 5
CN21 No sound from any key
#1
I. am trying to help a friend with a repair to this instrument. The symptoms are as follows :-
Instrument powers up and plays sounds when either lessons or concert music is selected. The music can be stopped and started with the start stop key. The metronome produces sound. The volume slider changes the volume. So all seems to be working except no key produces any sound. I suspected that power to the keyboard had been lost so I removed the keyboard and attached connectors to the pins 8 and 16 of the 74HC138 chips and found a good solid 5 volts.
Now I am at a bit of a loss. What other faults could cause these symptoms ?
Can the instrument or keyboard be muted ?  Can the microprocessor be reset ?
Any advice or help would be much appreciated.  Tony
 
Antworten
  


Möglicherweise verwandte Themen…
Thema Verfasser Antworten Ansichten Letzter Beitrag
  direktwahl rhythmus oder sound webby 2 2,850 19.12.2014, 23:10
Letzter Beitrag: webby
  Cn 34 Problem Sound sabinejasmin 1 2,294 02.04.2013, 09:28
Letzter Beitrag: michaelkunz
  Problem, ein CN21 per Midi-to-USB-Kabel mit Ableton zu verbinden Adrian 1 2,272 27.09.2012, 13:10
Letzter Beitrag: michaelkunz

Gehe zu:


Suchen: 1 Gast/Gäste