NOTE:
Because the antenna system is equipped with a capacitor, the continuity cannot be checked. Therefore proceed to the following simple inspection.
Turn the AM radio on.
Tune to the frequency with no radio broadcast and listen for a buzzing sound.
Turn a hand-held light on and shake it around the antenna rod (around 10—20 mm)
If a whirring sound from the speaker synchronized to the work light movement is confirmed, the antenna system is normal.
NOTE:
Use a fluorescent light type for the inspection. Accurate diagnosis cannot be done with a different type of light.