⑤ (3) amine lamp? Finally, let the anti-dot and the red dot coincide. Step 2: Turn on the water cooler first, then turn on the power supply of the laser marking machine, and then put the frequency multiplier between the front mirror and the beam expander. Slowly adjust the current of the power supply to about 10A, and then observe whether there is a green light on the frequency multiplier. If not, slowly adjust the front mirror bracket until the green light appears, and then slowly adjust the current of the laser power supply. Adjust it to about 8A, and then slowly adjust the four knobs on the front mirror and the rear mirror frame until the spot diameter becomes the smallest and the light beam becomes the brightest. Step 3: Place the frequency multiplier under the focusing mirror of the marking head and adjust the beam expander bracket to make the light spot the brightest and roundest. Step 4: after the above adjustment, install the Q switch, put the frequency multiplier between the front mirror and the beam expander, and then observe Q through the switch Q drive. Note: Never turn the four knobs on the front and rear frames too fast or too wide, and make slight adjustments slowly, otherwise it will easily lose the light spot and be difficult to find. After the whole adjustment is completed, adjust the locking screw in time to fix it, so as to avoid the light path change and failure caused by operating vibration when the equipment is running.