In the Season 2 Episode "Rip Off" (November 1, 1972) we see large sections of the Simplex and Duplex Maintenance Consoles. The equipment configuration is consistent with that of the Fox studios, and the presence of a lot of Burroughs B205 gear also points to Fox. Thanks to Rich Cushing for finding this one.
In the Season 5 Episode "The Quasar Kill" (February 4, 1976) we see a section of the Duplex Maintenance Console. Thanks to Glenn Edward for finding this one.