The MX80 (not 84) was produced between 1990 and 2000. It's a very basic (Mark I) Disklavier, it doesn't have an internal tone generator, no silent function and it can only read E-Seq files from double density floppy disks. You can update it to give you CD, USB and network connectivity by connecting a DKC850 control box to it via MIDI, but you will not be able to play Disklavier Radio on the piano.
While Disklavier electronics are pretty reliable, bear in mind that electronic parts will become obsolete at some point, before spending a lot of money trying to update an old (lowish value) piano. As with all Disklaviers, you also need to get a technician to check it thoroughly, in case it has spent the last 20 years playing for 12 hours a day in some hotel lobby.
athomik
On Mar 10 2011, Lawrence wrote:
>Trying to find out the capabilities of a "MX 84" disklavier upright. DKC5R control unit.
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>Can this be upgraded to a cd control unit? Any info is appreciated
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>Thanks,
>Larry
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