Snes Jr Schematic Link File

If you search online, you’ll find dozens of schematics for the original 1991 SNES. But those are with the SNS-101. Here’s why:

The SNN-CPU-01 combines the separate PPU1 and PPU2 from the original into a single custom chip (S-CPU A), but retains a separate S-PPU2. This is why RGB restoration is complex. snes jr schematic