When your RF laser tube fails to emit a beam, follow these troubleshooting steps to quickly identify the root cause:
1.Power Supply Check:
First, ensure that the water cooling system is functioning correctly and that the laser power supply has been successfully started. Then, using a multimeter, measure the DC 48V output of the laser power supply to verify that it is within the normal range. A faulty power supply can prevent the RF laser from operating.
2.Water Protection Signal Check:
Inspect the 25-pin connector on the RF laser tube. Check the continuity between pins 4 and 13. If there is continuity (i.e., they are connected), the water protection signal is working correctly. If there is no continuity, investigate the water protection device for potential malfunctions. This is crucial for preventing damage to the RF laser tube.
3.Control Signal Check:
Measure the voltage between pins 7 and 20 on the RF laser tube’s 25-pin connector. When the pre-lasing or start button is not pressed, the voltage should be approximately 4 to 5V DC. When the pre-lasing or start button is pressed, the voltage should drop to around 1 to 3V DC (indicating a low-level trigger). If the voltage readings are outside these ranges, the control signal is likely the source of the problem. Proper control signals are essential for firing the RF laser.
4.Initial Diagnosis:
- If the water cooling system, power supply, and control signals are all confirmed to be functioning correctly, the RF laser tube itself is most likely the source of the issue.
- If the control signal is abnormal, the control board or related circuitry may be faulty.
Summary:
By following these troubleshooting steps, you can pinpoint the cause of the RF laser tube’s failure to emit a beam. Based on the identified problem, you can take appropriate action, such as repairing or replacing components, to restore the equipment to proper working order.