Vintage Radio Service Manual - RCA model 77V2 (Chassis No. RC-606-C) 7-tube Superheterodyne AM SW radio receiver combination phonograph record player changer. Manufactured by RCA Victor, div of Radio Corporation of America, of Camden, NJ. Dated 1948. 6 pages.  Original old Sams Photofact manual includes schematic, layout, alignment instructions, dial cord drive, voltage & resistance test chart, repair parts list and description.  This manual would make a sensational accompaniment to your retro phono equipment.