A bit of a side project, but I’m also repairing the 3 Phoenix boards I have at the same time – so this page is more of a reference of where to find everything you (*and I!) need if you’re trying to fix your own boards.

Phoenix repair logs

Detailed repair logs from others of the problem found, and what was replaced etc. to fix it


Phoenix discrete sound emulation

This is great as it shows which chips on the schematics are used for which sound effect, so if any sounds is wrong or not working, you know where to start looking


Phoenix (Centuri) schematics


Phoenix (Zaccaria) schematics


MM6221A sound chip MAME driver (the music chip in Phoenix)


Here’s my own files for reference:

Phoenix Centuri Manual and Schematics

Phoenix pin-outs

mn6221aa Data Sheet