PU-16 MM3 modchip installation diagram

According to Wikipedia the PU-16 was only found in the SCPH-5903. This is a very unique board in that it was only released for the Asian market, and was only in a single model, and it was colored white instead of grey.

The SCPH-5903 is the only PS1 model that can play video CD movies. The system also has the RCA video plugs like the original SCPH-100x models did.

Apparently there were only around 10,000 of these made, and they were primarily in Hong Kong. So they’re fairly rare. Because of this I can’t find any MM3 installation diagrams for the system.

Based on what I can find online the board most resembles the SCPH-1000. If you have one of these I’d look at MM3 diagrams for the SCPH-1000 and other earlier boards and try to figure out where things go through trial and error. In other words take a look at the PU-7 and PU-8 diagrams.

Here’s a video about the console:

For more information about MM3 chips click here, for more information about PS1 modchips click here.