Amek 501 Langley Manual [verified]

For engineers who have inherited a vintage studio or broadcast facility, few phrases strike both excitement and dread as the search term: The Amek 501, designed by the legendary Dave Rees and refined under the Langley brand, is a sleeper hit—discrete Op-amp based, transformer-balanced, and capable of a punchy, 70s-rock vibe. However, because these consoles were often custom-built for specific TV and radio stations (like the BBC and WDR), finding official documentation is akin to archaeological excavation.

Does anyone have a copy of the manual (user or service) for the console? I'm trying to track down the original documentation, particularly the schematics and block diagrams. Amek 501 Langley Manual