Schematic for the Inventec Phoenix Sacramento 10A Plus CS board, revision RX01, board number 6050A2175001, in a 767 KB RAR archive.

PDF of 1012 KB titled manual_postcard_32, filed as a schematic but most likely a user manual for a PC diagnostic POST card.

PDF reference of about 247 KB on BIOS beep codes, catalogued under schematics although by its name it is a diagnostic chart rather than a circuit diagram.