Re: 1570 drunken stepper

From: Pasi Ojala (
Date: 2006-12-27 11:48:00

> So, the problem should be in the R/W hybrid, right?

It wasn't.

I rechecked the step pulses and found out that in the working
unit the steps are ABCD and DCBA, but in the problem unit it
was messed up: ABDC and CDBA. I didn't notice this at first,
because the step outputs are in a mixed order in the connector.

Anyway, two wires from VIA to the gate array were swapped by
a previous repairman and now the drive works fine.

"Times are not what they were, and we cannot be, either. If you sit and
 wish for what you want, you may not see it this side of the grave."
	-- Nynaeve al'Meara in The Wheel of Time:"The Shadow Rising"

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