Laser diodes can be destroyed by static electricity transported by human body. So most of these laser units will be removed before installing).
When restoring the peripherals of the laser unit, please take an anti-static measure.
1. The laser diode and the surrounding actuator cannot be touched.
2. Do not test the laser unit with a laser diode tester (or electric meter). Easy to break
3. We highly recommend the anti-static solder tool used to remove the protective point of the laser unit.