I've scanned the pcb for ntr-cpu-10 and made a schematic.
The same for ds lite usg-cpu-10.
You can find all the files here:
https://www.dropbox.com/scl/fo/36bv6n15gwfl7kkxsylq0/h?rlkey=4iqt9tpp2lja15wcgy510h815&dl=0
If you can help with part identification an symbols, please let me know.