I tested the PCB in a Arch Rivals cabinet, I was able to coin up the board, start a game and button mash to get the characters to move and fire.
Bally Midway Xenophobe Arcade Sound Board A080-91863-B000 ORIGINAL PCB untested
Sound board is untested, looks clean and in good condition.
Both are included in this sale, if you would like me to separate them, I would.