1.Problem description:RDC6332M,can follow up,press the autoamtic focus button laser head began to drop after touching the iron plate and rise to the reference focus position,then stop,no longer lift up.
2.Possible cause analysis of failure:Whether the upper and lower limit switch is enabled,whether the upper and lower limit switch is encountered.
3.Solution:Limit Enable is changed to NO.Press the autofocus button to see if it is normal.If the autofocus is normal,the upper and lower limit switch is encountered,and the limt polarity is reversed.