While they're not the service manuals, Lexicon has the complete operator's manuals for many of their discontinued products available for download as PDFs. Vortex: <http://www.lexicon.com/downloads/vortex_downloads.asp> Jammer: <http://www.lexicon.com/downloads/jamman_downloads.asp> Misc: <http://www.lexicon.com/downloads/misc_index.html> plus many others... -t-