Triple check the jumpers. Running 2732s on a -17 takes some cuts and jumps, make sure you got it right and the long jump between u2 and u9 the wire is not impaled on any sharp post.

Check continuity Address and Data from CPU down to other chips with DMM on continuity mode or your probe into the chip socket while powered up with only u9 plugged in. That would be looking for open circuit. Check for shorts of two signals together. Specially like at the ROMs where a trace passed between two legs. Machine pin sockets have been known to be wide enough to touch a trace between pins with the solder mask pealed back.

Visual inspection goes a long way. I have found numerous head banging issues like a solder splash causing a short by really looking close at every square inch of the board under bright light.

in my xp wrong VMA is a symptom of another problem more than than cause of a problem. ie two signal shorted together = wrong vma reading.

Pinwiki is probably talking about this string of gates, which snap shot is from a -35 schematic because it is easier to follow, but i think its the same on the -17 and has to be working. You can step through each one with a logic probe but something tells me the issue has a good chance to be a solder splash or short between IC socket, jumpers not set right. Exhaust thorough visual inspection and DMM buzz/logic probe check for shorts and opens.
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gates at u15 seem to be the most likely ones to fail, like in clock area and the one with the 150ohm pullup.