What is the detailed explanation of the KYMCO CT250 warning light?

[DallasAnn]

Check the connection from the generator excitation winding lead-out terminal through the brush to the regulator, and check the connection from the generator stator three-phase winding lead-out terminal through the diode. First, the fault location should be checked, generally starting with checking whether the contacts are burnt or dirty and not conducting, and whether the contact return spring is faulty.