If it helps (it probably won't) the monitor was built by JVC and may have been sold under a different badge, much like how Phillips produced dozens and dozens of variants of what we know as the Commodore 1084.
The monitor that Ray is looking at may not have been sold as a Commodore 1070 (it had a DIN-8 connector before I messed with it), but there's no way to know for sure as all identifying labels were long gone by the time I got it.
JVC's model number is allegedly CM20311-005, but this does not return anything even vaguely meaningful in internet search results. The only entity that would have schematics for this monitor is JVC and it's not known how well they retain historical documents of this nature.
The monitor's symptoms were... odd. The tube was getting power and lighted up but no input signal showed up, ever. I probed and poked as much as I dared and the 5V supply is low. The monitor's power supply is in a separate section and of course the outputs aren't marked or anything helpful like that. Maybe a recap could cure it but a blind recap of this monitor would be quite and undertaking and not a single cap even remotely looks or smells like it is leaking.