What are the faults of the three roller gate? How to solve the problem

What are the faults of the three roller gate? How to solve the failure?

1. After swiping the card, turn around continuously for several times, the phenomenon of no card position, as the saying goes, spanking phenomenon;

2. After swiping the card, it cannot be pushed and appears to be unlocked;

3. After swiping the card, the rotation is not smooth, and it seems that noise can be heard;

4. When the card is not swiped, the position of the rod is inaccurate and the position is off-set;

5. After swiping the card, the indicator light turns on, but the push rod does not move;

and many more……

Treatment method: check the power supply or fuse; adjust the strength of the damper; adjust the four base angle screws of the electromagnet to reduce the electromagnet gap; check the control board; check whether the electromagnet screw is loose or broken; check the three-roller brake drive board At this time, the input end of the drive board can be short-circuited (1 # open gate or 2 # open gate input). If the solenoid valve or green light responds, it is normal; check whether the electromagnet of the power off rod is attracted to the iron block; Whether the electromagnet of the rod has DC12V power supply; check whether the electromagnetic device of the power down rod touches the spring in the turntable. If so, move the whole device up so that the two do not come into contact.