No deformation is allowed (housing, PCB, connectors etc.) No change of color, gloss and surface structure that can be judged to affect function is allowed. No evidence of liquid (e.g. water, coffee, washer fluid) or salt intrusion inside the component is allowed. No evidence of dust that could interfere with IP-class, correct function or impair safety. No evidence of CAF (Conductive Anodic Filament) is allowed. No evidence of whisker growth longer than 20 µm is allowed. No evidence of electro migration or electro chemical migration is allowed. No evidence of corrosion products, that can be judged to affect fit or function, is allowed. No evidence of harmful residues (e.g. corrosive or aggressive halogens) that could interfere with correct function or impair safety. No signs of fretting related corrosion or wear are allowed. No signs of wear or abrasion on wire insulation are allowed. No delamination of printed circuit board is allowed