@rgalland
2 boards publicly available on BoardRepo.
Public boards
pc-engine_cdr-30a_schematics
Schematics of the PC-Engine CD-ROM2 - Includes comments about differences between CDR-30A and the older CDR-30
schematicpcbbomswitchregulatorcrystalpotentiometer
pc-engine_supergrafx_schematics
PC-Engine SuperGrafx Schematics - Reversed Enginnered from actual PCB
schematicpcbbomswitchregulatorcrystalresistor