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Vintage Synth Repair

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Message

Roland GR700 Help Wanted

2006-02-22 by c1105y

Hi
im looking for technical help on my GR700
it has had an xlr socket installed on the back. Pin connections are
looking at the circuit board as follows
Din1 Pin 5 to Pin 3 on XLR
Din1 Pin 4 to Pin 1 on XLR
Din2 Middle Pin to Pin2 XLR
Does anyone know what this mod is? would the eeproms have been updated 
too? also im looking for schematics/service manual if any one has pdf 
they could email over.
Any help would be much appreciated
Thanks

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