Vintage Phono Service Manual - EMERSON model 549 3-tube amplified phonograph record changer. Manufactured by Emerson Radio & Television Company, of New York, 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.