Radio Museum, ANTIQUE RADIOS: 333 778 Antique Radios, Schematics, Pictures - Radio Catalog.15) Zenith Service Manual. Model “Royal 500” All Transistor Portable Radio. Chassis. 7XT40 Circuit #1, 7XT40 Circuit #2, 7XT40Z, 7XT40Z1. 1948 Zenith Radio Receiver Model 4G800 Service Wire Schematic Repair Manual 1929 – 1940 Zenith Radio Corporation SERVICE MANUAL CD. H500 was introduced in 1951, it was a tube radio type, Click to download a partial copy of the Service Manual with schematics (2048 Kb) Click to download the 300-1 Service manual (1359 KBytes). Zenith Transoceanic mod. Royal 3000-1 - USA 1964. Con questo modello nei ricevitori portatili The Internet Archive Manual Library is a collection of manuals, Zenith Royal D 7000 Royal D 7000 1 Service Manual by Zenith Radio Corporation.