7 Nov
2001
7 Nov
'01
9:13 a.m.
My EI has
the double-density upgrade but I've removed it
because over the
years it's slowly drifted to the point that
it is no longer able to read
disk. Still works fine in single-density mode though.
Somewhere I have the official service manual for the Model 1 DD upgrade
board. It includes the alignment procedure, which doesn't look _too_ bad
(it's very similar to the model 3 setup, for obvious reasons), but you'll
need a 'scope.