22 Nov
2007
22 Nov
'07
8:17 p.m.
On Thursday 22 November 2007 12:58:17 Richard A. Cini wrote:
That's interesting -- who?
The way that the service manual tells you to check the speed is the pulse
width on a specific test point on the PCB. I was just going to use a laser
tach on the spindle...but I have to get a tach first :-)
I'm coming in late on this - sorry if it's been discussed
Is there some reason to not check the spindle speed in software (watch for
index pulses)?
Many/most drives have 50Hz/60Hz zebra discs on the flywheel, for using a
flickering fluorescent light.