What Are the Common Problems with Handheld Laser Marking Machines? What Are the Reasons?

1.The reason for the weak laser output power of the new equipment laser with a short use time is:

• Whether there is light leakage from the full reverse diaphragm.
• Whether the acousto-optic switch insertion loss is within the specified range.
• Whether the laser output power measured at the factory reaches the technical index.
• Whether the accuracy of resonant tank adjustment meets the requirements.

2. After the laser marking machine has been used for a period of time, the laser output power of the laser decreases:

• Whether the service life of krypton lamp expires.
• The laser light entering the galvanometer is off-center: adjust the laser.
• If the current is adjusted to 20A or so, the light is still not strong enough: krypton lamp aging, replace with a new lamp.
• Whether the laser resonant tank changes: fine tuning resonant tank lenses, so that the best output spot.
• Whether the full reverse diaphragm and the output diaphragm are stained or damaged.
• Acousto-optic crystal offset or low output energy of acousto-optic source: adjust the position of acousto-optic crystal.
• Whether the temperature difference between the cooling water tank water temperature setting and the ambient temperature is more than 5℃.

3. Laser marking machine equipment laser output power is normal, but the laser beam can not play the role of marking the reasons:

• Whether the optical path system adjustment is accurate.
• Whether the sound and light switch can play the role of switch.
• D / A card control sound and light output signal laser marking machine whether to reach 5V.

4. Laser marking machine sound and light switch can not play the role of switching laser:

• Whether the RF line connection is reliable.
• Whether the end face of the Q switch is stained.
• Whether the RF output power of acousto-optic source is normal.
• Whether power switches are in the correct position.

5. Laser marking machine equipment can not reach the expected marking depth of the reasons:

• Whether the laser output power meets the requirements.
• Whether the sound and light switch off power meets the requirements.
• Whether the optical path is adjusted accurately. 
• Whether the position and direction of the beam expanding mirror are adjusted accurately.
• Whether there is pollution on the surface of lens.
• Whether the surface of workpiece is on the focal plane.
• Whether the output DC voltage of laser power supply 28V decreases, resulting in the decrease of laser output power.