Vintage Phono Service Manual - GENERAL INSTRUMENT model 204 automatic phonograph record changer.  Manufactured by General Instruments and Appliance Corp., of Elizabeth, NJ.  Dated 1947. 8 pages.  Original old Sams Photofact manual includes General Information, The Cycle Change, Adjustments, Troubles, 2 page Exploded Parts View, Recording Mechanism in detail and repair parts list and description.  This manual would make a sensational accompaniment to your retro phono equipment.