1.Fault phenomenon：System has no any reactions.
The reason is:No power supply or the circuit did not connect well.
Solutions:Check if the power supply is connected well.
2.Fault phenomenon：Red light keeps on with “KaBa” sound.
The reason is:Position limitation protection.
Solutions:Check if over input signal amplitude. If the signal is normal, please contact us.
3.Fault phenomenon：Scan motor swings lightly after turning on.
The reason is:Too much interference or input signal circuit did not connect very well.
Solutions:Check the interference sources and the input signal circuit.
4.Fault phenomenon：Motor squeals after turning on, the drive board and motor overheat.
The reason is:Driver board and motors did not connect well/The mirrors or clips become loosen.
Solutions:Check the wiring/ the mirrors and clips.
5.Fault phenomenon：Mirror reflection power is weak.
The reason is:Light path is not aligned well.
Solutions:Align the light path of the marking machine; If the light path is normal, please contact us.
6.Fault phenomenon：Marking graphics becomes one straight line.
The reason is:One motor can not move normally.
Solutions:Checking the wiring connection between the motors, drive boards and control board.
7.Fault phenomenon：Waves exist in the marking line.
The reason is:Grounding problems/Surrounded by strong interference sources/The Anti-interference ability of marking control board is poor.
Solutions:Check if the ground connection is well/Check if there is a strong interference source surrounded/Check the position control signal of marking control board.
8.Fault phenomenon：Marking square becomes rhombus or one side not straight.
The reason is:Abnormal signal output from D/A board.
Solutions:Replace D/A board, if not solved, please contact us.
9. Fault phenomenon：Leakage when marking.
The reason is: The laser energy is unstable or there is a pause during the pedaling process.
Solution: Repeat the test several times to see if the phenomenon still exists. If the position is different, please check the control system; if the position is the same, change the galvanometer test.
