electrical equipment of the type comprising a plurality of circuit boards has CONNECTED prints a circuit diagram

INGREDIENTS OF ELECTRICAL EQUIPMENT ARE MOUNTED ON SEVERAL CARDS PRINTED CIRCUIT BA G. COMMUNICATIONS TO THE CARDS AND FROM THEM, THE IMPLEMENTATION OF SUPPLY VOLTAGE ETC. ARE CARRIED BY WILLING WIRE CONNECTIONS ON A PLAN 1. CARDS (EG B) ARE CONNECTED TO DRIVERS USING DEVICES CONTACT B11, B12, B21, B22. AT LEAST SOME DRIVERS PRESENT INTERRUPTION AT EACH CONTACT DEVICE. SOME OF CARDS, CARDS SIDE ARE PROVIDED WITH MEANS FOR JUMPER INTERRUPTIONS, WHILE OTHERS, THE MAIN CARD, DO NOT INCLUDE SUCH WAYS TO BYPASS. BY INSERTING ANY NUMBER OF CARDS SECONDARY IMMEDIATE VICINITY OF A MAIN CARD ON MAY, IN AN AREA CHOSEN ARBITRARILY, FUNCTIONAL UNIT INCLUDING A NUMBER OF CARDS: Arbitrary.