200e

recently i encountered a case where a second-hand 259e was installed
in an old 200 cabinet. apprently this particular cabinet was of a
small and early generation that had +24v supplied to one of the rails
used for digital clock and data in the 200e series. (i think this was
for the incandescent lamps in the original 227.) these pins go pretty
much straight to the brain of 200e modules, with little or no
protection from overvoltage, so the result in this case was instant
tragic death for the 259e.

obviously this is a big hole in our claim that "form factors and power
supplies are identical" between vintage 200 and 200e. sorry.

anyway... watch out... if you're going to install 200e modules in an
old cabinet, check the power supply voltages first, and BLOCK THOSE
PINS if necessary.

i'm attaching a drawing of the supply voltages for 200e. blocking the
clock/data lines shouldn't affect the module's functionality except
when inter-module communication is involved (midi and preset
management).

-eb


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