We spent a few hours trying to route signals through the backplane (motherboard) so now we have a marked up copy. We don’t have it digitized yet, so just call us and we’ll send you what we have.
Other 316RA schematics (available at Teledyne’s website):
The 316RA is a trace oxygen analyzer (polarographic; chemical cell; fuel cell). It seems well built. It has wide acceptance of industrial customers.