Breaking Down Laser Coding Machine Failures: A Comprehensive Guide to Diagnosing and Fixing 'No Marking' Issues, from Tu

Laser Coding Machine Not Marking? Common Troubleshooting and Solutions

A laser coding machine suddenly stopping during production can be a significant bottleneck. Fortunately, most issues can be diagnosed and resolved quickly. This guide outlines common failure points and their solutions to help you restore operations promptly.

Core Issue 1: Laser Tube Lights Up, But No Code

When the laser tube is on and the voltage meter shows a reading, but no mark is produced, the problem often lies in the optical path or the tube itself.

Symptom ①: Light Guide Arm Heats Up, Abnormal Output

Cause: Typically caused by a loose light guide arm or misaligned laser tube, leading to a deviated light path.

Solution: Re-calibrate the light path. Tighten or adjust the light guide joint to ensure precise laser beam transmission.

• Symptom ②: Decreased Laser Power

  • Cause: Often due to an aging laser tube.

  • Solution: Use a multimeter to check the voltage regulator and the laser tube's operating voltage. Replace the aged laser tube and any damaged components once confirmed.

Core Issue 2: Laser Tube Won't Light Up

If the laser tube does not illuminate at all, the issue is likely in the power supply circuit.

• Symptom ①: Voltage Meter Has Reading

  • Cause: An open circuit in the power supply line, or poor contact in the footswitch/manual switch.

  • Solution: Use a multimeter to check for continuity. Repair open circuits or replace the faulty switch.

• Symptom ②: No Voltage Reading, Blown Fuse

  • Cause: A short circuit inside the machine or severe contamination.

  • Solution: Focus on checking the high-voltage section. Clean out contaminants, repair the short circuit, and then replace the fuse.

Safe Operation and Daily Maintenance Tips

To prevent failures, adhere to these daily practices:

1. Safety First: Ensure the equipment chassis is properly grounded. Always power down and discharge high-voltage capacitors before maintenance.

2. Mind the Environment: Keep the equipment and its surroundings dry and clean to prevent short circuits or discharges caused by dust or moisture.

3. Proper Usage: Avoid prolonged operation at high currents. Store the light guide arm in a dry box when not in use to prevent optical lens mold.

By following these diagnostic steps, most issues causing your coding machine to fail can be resolved. Regular maintenance and correct operation are key to ensuring stable equipment performance.