Useful Zenith Transistor Radio Schematic Diagrams
Sometime ago, I was able to download a number of Zenith transistor radio schematics from a Website that had Beitman schematics in the .djvu format. I have converted the schematics to the more popular Adobe .pdf format. Therefore, to view the schematics you will need to have the Adobe® Reader. This is a free download at www.adobe.com/products/acrobat/readstep2.html. There are approximately 40 Beitman Zenith transistor radio schematics available here for your use.
This is just a portion of the many Zenith transistor radio schematics. The "Gold Standard" for service information is the Sams TSM© (transistor service manuals) series. Since they are still under copyright protection, they cannot be posted. However, the Sams TSM series can be found frequently on Ebay©. If you want to look on Ebay for a manual, here is a Sams index of the most popular Zenith models.
After repairing hundreds of Zenith radios, I have found consistent and frequent problem areas. This page of useful repair tips lists these common problem areas for those wanting to service the Royal 500 series and other Zenith transistor radios.