Contact points coating system and locking method thereof

A Kontaktstellen- or pad-coating system containing an ultraviolet (UV) -Quellenabschnitt which contains first control switch and which UV-light during a pad coating operation in response to a UV source opening - / - radiates closing signal, and a dispenser, which second control switch contains and which outputs a coating liquid during the pad coating operation in response to a coating condition detection signal, and includes a prober, wherein the UV source opening - generated closing signal and the coating condition detection signal and which controls the pad coating operation - /. The operating states of the first and second switches are monitored and the pad coating operation is stopped if the operating state is not set at least one of the first and second switch to a desired state.