Vintage Phono Service Manual - DYNAVOX model AP-514 (Chassis AT) 3-tube phonograph record player. Manufactured by Dynavox Corp., of Long Island City, NY. Dated 1947. 2 pages.  Original old Sams Photofact manual includes schematic, layout, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro phono equipment.