ROLAND KR5000 Schematic required !!!..

[jazzmusic]

The power supply voltages are all ok, screen lights up, but no response from buttons or keys. Audio works ok.
Looks like a fault in the digital circuitry, so would really appreciate a schematic..or some guidance !!.

Thanks..

[Jazz P Bass]

Have you tried a 'Factory Reset'?

Note: back up the ROM as it will be wiped clean.

Roland KR 5000 reinitialization:

The following procedure will clear the KR-4700 and KR-5000 internal memory and reload the factory settings:

(CAUTION!!!!: All USER information will be lost!!! Be sure to back up any information you wish to keep!!!)

NOTE: Never turn off the power during a Factory Reset. This may result in corrupted internal data and may prevent the power from being turned on again.

1. Make sure there is NO floppy disk in the disk drive.

2. Turn the keyboard ON.

3. While holding the EDIT button, press the LOAD and SAVE buttons at the same time.

4. The display should show "Factory Setup is Loaded."