The service manual, a mirror

The first factory document lands in the library, and it arrives with an asterisk: this is not paper on this bench. It is the scan of the X-150D service manual that has circulated online since at least 2008, red evaluation watermark and all, mirrored here exactly as found and transcribed in full — twelve of its thirteen chapters of specifications, adjustment procedures, parts tables and troubleshooting charts, now searchable.

Transcribing a whole manual page by page teaches you its gaps. This scan has one that matters: chapter XII, the schematic diagram, is simply not there — the one page a service manual exists to carry. So the hunt list reorders itself: an original service manual, or even a lone legible schematic page, now sits at the top.

The specifications chapter also settled this site's specs page, which had been standing empty on principle until a citable source arrived. It also delivered one detail worth a grin: the factory transistor list includes the 2SC458 — a part with a reputation, and now a documented resident of this machine.