ASICs not happy.
Low voltage high current devices like CPUs can look shorted (e.g. 1.2v core voltage, 20W in stopped state = ~ 16.7A or 72mohm resistance) but I don't think that's the case here.
Unless I'm missing something, from the posted schematic fragments it looks like they have neither power nor ground pins shown...
-5.2V and Vee means ECL logic.
The 9384M manual that was posted shows the MDX622 as an "2:8 ECL to TTL demultiplexer".
So officially is the LeCroy now LeCrisp?
I think it has LeCroaked.