You can start with the Swan 700CX manuals and schematics
You may wish to e-mail KD6ZR for some photogrpahs of his 700CX for your restroation assistance!http://www.accessatc.net/~rjlutz/vint_ssb.html
Swan Radio Network http://www.angelfire.com/ny2/hamradio/index.html
Cubic Communications, former manufacturer of both Swan and Cubic amateur radio equipment, has authorized Stephen Judd (formerly Brock Publications) to produce Instruction and Operating Manuals associated with all Swan and Cubic amateur radio communications equipment and accessories.
In recent years, Atlas and Siltronix Radio manuals have been added to the list of available publications.
Orders and inquiries can be made to:
1503 East Highland Trails Rd
Enoch Utah 84720