Here's the rest:
I'm missing the system checking program, otherwise I assume that's most of it
819 180155 000 REV 00 Plasma Display Manager : NEC Information Systems Inc. : Free Download, Borrow, and Streaming : Internet Archive
NEC Powermate Portable SX Plasam Display Manager software manual
archive.org
819 180127 000 REV 00 System Checking Program Guide : NEC Information Systems Inc. : Free Download, Borrow, and Streaming : Internet Archive
NEC Powermate Portable SX System Checking Program Guide
archive.org
819 180129 000 REV 00 Hardware System Setup Guide : NEC Information Systems Inc. : Free Download, Borrow, and Streaming : Internet Archive
NEC Powermate Portable SX Hardware System Setup Guide
archive.org
I'm missing the system checking program, otherwise I assume that's most of it