The electromagnet does not pick up. The solution is: first check whether there is a problem inside or outside the host; secondly, check the solenoid fuse to see if the electromagnet has signs of energization, eliminate mechanical jam, and detect when everything is normal. Internal power supply; commonly encountered in weighing packaging machines is the cause of such failures: sensor damage, bridge voltage failure, line connection or interruption is wrong, the elimination method is: detection sensor and wiring or host Load signal, close to detect the bridge and amplifier circuit or computer output display circuit, or remove the host, apply a clear signal through the internal short circuit to determine whether the fault is in the machine or from the switch, and then solve the problem.
