Observe whether there are signs of burns, pitting, oxidation, deformation, looseness, falling off, etc. on the conductive copper cores and pins of the high and low voltage connectors. If so, repair or replace them in time;
Observe whether the conductive copper cores and pins of high and low voltage connectors have signs of burns, pitting corrosion, oxidation, deformation, looseness and falling off. If so, repair or replace them in time;
Observe whether the conductive copper cores and pins of high-voltage and low-voltage connectors have signs of burns, pitting, oxidation, deformation, looseness, falling off, etc. If so, repair or replace them in time;