Manual/info needed: CEL Electronics 'Digital Effects Framestore TBC' Model 38XP
 

I have just bought a model 38XP video effect machine/framestore/TBC from 1988 by CEL Electronics. The main unit can be seen here, the wired control panel here and the rear panel connections here (last two are photos of the actual unit).

I have powered it up and everything seems to be working, but I guess I could get more out of it with some sort of instructions. So, does anyone have any ideas where I could get a user manual for this? Googling doesn't reveal much, the first link is about the only one with any info about the unit.

Some effects that I managed to get up (like zooming, rotating, skewing, pixelising etc.) looked really nice and this feels like a proper pro-machine.