The schematic for Zenith 8A02 can be found here on nostalgiaair. First click on "schematics", "Rider by Original Index", "Zenith" and the model number. There are 3 pages of information for your radio.
Norm
: I need a schematic for a Zenith radio model 8A02, Serial #S940748. Can you help me? Thanking you in advance.