OK...So stop poking around it with a multi-meter out of circuit, and start poking at it with the scope in circuit and active.
Are the images to which you refer the amber-traced scope images found in the Photos section? They don't seem to be associated with any messages. Is there any other explanation besides the captions? Are these the way the signals should look at these points?
And it seems you are saying that I have bigger fish to fry than ICs 18 and 19, since my P6 can't
get thru the initial stages of calibration.
Am I correct to assume that IC 33 is the DAC, and IC 27 is it's comparator? I'm guessing this because VR6 and 7 connect to this pair, and adjust the DA functions.
And if that guess is correct, is the output of the DAC pin 1 on IC 27, which is unlabeled on my schematic, but connects to TP2?
My scope is out and dusted off, but I'm not quite sure what I'm looking for. Digital circuits are a new experience for me, and I haven't fully grasped this schematic.
I'm assuming that since I seem to have checked all traces with a multi-meter, and have found no shorts or any more broken traces, that my problem is a blown IC. None of them get overly warm in operation, though.
Thanks for your time.