30 May
2006
30 May
'06
8:54 p.m.
On 5/31/06, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
There was also a standard controller IC (it was a
mask-programmed
microcontroller, I forget which one, but it was something standard --
maybe 6805-like), which was used in some of the desktop printers. It had
Centronics and 600 baud serial inputs.
The controller in the C= 1520 is a 6500-family masked-programmed
controller and only implemented the C= IEC bus, not serial or
Centronics.
I have the Alps service documentation for this
mechanism, but it doesn't
show the motor pinion separately from the motor.
That's a shame.
I've contemplated what it would take to make a "negative gear" in some
durable material like aluminum and experiment with extrusion molding
of a "slug" which would then be cut down to the right length. Since I
have a few bare Alps mechanisms, I've also contemplated experimentally
turning down the motor shafts if I were to ever find a matching gear
that was the right size except for shaft diameter. Anyone else here
have any ideas on how to solve the perpetual cracked gear dilemma?
-ethan