Optical fiber laser marking machine marking result is bad how to solve? How do the daily maintenance

Optical fiber laser marking machine marking result is bad how to solve? Laser intensity drops, mark is not clear, the solution: 1 whether laser resonator changes; Fine tuning cavity lens. Make the output light is best; 2 acousto-optic crystal offset or low light output power energy adjustment acousto-optic crystal location or more sound and light power workflow to go in the galvanometer laser 3 off center: adjust the laser; If current transferred to about 20 a photographic still strong enough: krypton lamp aging, replace the new lamp. Other causes: first: the lens is too dirty, use cotton with a bit of alcohol, and then gently wipe the mirror; Second: the object of playing too fast, can reduce the target speed, thereby increasing filling density; Third: the power of the laser current power flow is too small, no open or open the power supply current or power supply current of power up; Fourth: laser module has to use fixed number of year, may be its service life, need to replace the laser module.