Kawai K4r Schematic / Service data
2016-05-03 by gonzinigonz@...
Hi all
Anyone got a high resolution schematic (better than the one about on the web...) of the kawai K4r?
I can't read some of the labels on some of the CPU / control multiplex lines as the scan is a bit crap.
Got an annoying popping / clicking thing going on with the filter modulation.
I think its the actual custom filter chip failing as I've pretty much replaced what i can around it and what's hanging off the buses.
I see what looks like data bus contention when its playing up which from memory is all the time.
Its running the latest firmware which is quoted as fixing some clicking issues with the filter....
Or does anyone have a k4r mainboard working or different fault they want to shift in the UK?
Cheers