Malfunctions of sound signals and ways of their elimination
Offered malfunction	Check method	Way of management
Signals do not sound
Has fused a safety lock in a chain of signals because of short circuit in signals or maladjustment of signals	Safety lock to check up a control lamp	To replace a safety lock; in case of repeated combustion to remove signals and to check up their work (Adjustment of signals> see <)
Unreliable contact of tips of wires to plugs of signals or the relay	To check up reliability of connections	To make обжимку tips for maintenance of reliable contact
One of signals does not sound or sounds hoarsely
Signal adjustment, contacts or water hit in a signal have burnt slightly	Serially to disconnect signals; to define what signal works abnormally	To make signal adjustment (Adjustment of sound signals> see <). A signal to which water has got to dry
Destruction of a membrane of a signal or contact system	Serially to disconnect signals; to define what signal works abnormally	To disassemble a signal; to replace faulty details and to make signal adjustment (Adjustment of sound signals> see <)