Master controller for Nikkodo / BMB CD-i karaoke systems. They are similar to the Philips CDI 181 MultiMedia Controller (JNMS). The mainboards of these units were made by Kyocera. They all lack optical disc drives and require additional units (e.g. CDI 180 for JNMS and CDI-A1500 for BMB).

So far, three different hardware generations have been found, and there may be more. The hardware has evolved from being very similar to JNMS to something that hasn’t been seen in other CD-i players. To identify different mainboards/generations, I use the first character of the serial number:

• A unit – mainboard PDCDG4001D
• L unit – mainboard PDCDG4002B
• V unit – mainboard PDCDG4003B

Be sure to visit all of these pages, as the units are quite different and various amounts of work have been carried out on them.